/* ============================================
   AIDING MIGRAINE v5.7.1 - PRODUCTION
   ============================================ */

/* === ROOT VARIABLES (WARM DARK - DEFAULT) === */
:root {
    --bg-primary: #1c1815;
    --bg-secondary: #2a2420;
    --bg-tertiary: #362f28;
    --text-primary: #ede8df;
    --text-secondary: #cfc7b8;
    --border-color: #4a4237;
    --accent-green: #8fb394;
    --accent-red: #c97a6f;
    --accent-blue: #7a95b8;
    --pain-mild: #8fb394;
    --pain-moderate: #d4a574;
    --pain-severe: #c97a6f;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    --radius: 12px;
    --transition: all 0.2s ease;

    /* === SCALES ===
       Structural, so they live only here and never vary by theme.
       Before these existed the app used 18 ad-hoc spacing values, 26
       font sizes and 11 radii, which is why no two cards agreed. */

    /* Spacing — 4px base. */
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 20px;
    --space-6: 24px;
    --space-8: 32px;
    --space-10: 40px;

    /* Type. --text-sm and --text-md carry most of the UI; the values
       between them (0.82/0.84/0.86/0.92) were indistinguishable. */
    --text-xs: 0.75rem;
    --text-sm: 0.85rem;
    --text-md: 0.9rem;
    --text-base: 1rem;
    --text-lg: 1.1rem;
    --text-xl: 1.3rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.8rem;
    --text-4xl: 2.5rem;

    /* Radius. --radius stays as the large alias for existing callers. */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-pill: 999px;
    --radius-circle: 50%;

    /* Elevation. */
    --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.5);

    /* Stacking order — previously a spread of magic numbers from 100
       to 10000 with no relationship to each other. */
    --z-nav: 100;
    --z-modal: 1000;
    --z-overlay: 9996;
    --z-prompt: 9997;
    --z-indicator: 9998;
    --z-banner: 9999;
    --z-loading: 10000;

    /* Surface tokens — every theme must define these. Anything painted
       behind or on top of content (page background, nav, cards, chips)
       reads from here so a theme switch changes the whole app, not just
       the parts that happened to use a var(). */
    --app-bg-gradient:
        radial-gradient(circle at top left, rgba(143, 179, 148, 0.12), transparent 34rem),
        linear-gradient(180deg, rgba(42, 36, 32, 0.96) 0%, var(--bg-primary) 22rem);
    --card-border: rgba(237, 232, 223, 0.1);
    --card-shadow: 0 14px 40px rgba(0, 0, 0, 0.18);
    --hero-tint-a: rgba(143, 179, 148, 0.18);
    --hero-tint-b: rgba(201, 122, 111, 0.09);
    --hero-border: rgba(143, 179, 148, 0.32);
    --chip-bg: rgba(28, 24, 21, 0.36);
    --chip-border: rgba(237, 232, 223, 0.12);
    --surface-nav: rgba(42, 36, 32, 0.94);
    --surface-nav-border: rgba(237, 232, 223, 0.1);
    --surface-nav-shadow: 0 -16px 40px rgba(0, 0, 0, 0.28);
    --nav-active-bg: rgba(143, 179, 148, 0.14);
    --select-chevron: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%23cfc7b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    --accent-green-hover: #a5c5ad;
    --accent-soft: rgba(143, 179, 148, 0.18);
    --surface-raised: rgba(237, 232, 223, 0.06);
    --trend-up-bg: rgba(201, 122, 111, 0.18);
    --trend-down-bg: rgba(143, 179, 148, 0.18);
    --pain-mild-soft: rgba(143, 179, 148, 0.35);
    --pain-moderate-soft: rgba(212, 165, 116, 0.35);
    --pain-severe-soft: rgba(201, 122, 111, 0.35);
    --surface-nav-blur: blur(18px);
    --surface-overlay: rgba(0, 0, 0, 0.7);
}

/* === WARM LIGHT THEME === */
:root[data-theme="warm-light"] {
    --bg-primary: #f8f6f3;
    --bg-secondary: #fdfcfb;
    --bg-tertiary: #f0ede8;
    --text-primary: #3a3634;
    --text-secondary: #6b6560;
    --border-color: #d4cfc8;
    --accent-green: #4a7c59;
    --accent-red: #b85050;
    --accent-blue: #4a6b9e;
    /* Darker than the dark-theme amber so the white text drawn on it
       (calendar day cells, legend dots) clears 4.5:1 on a light field. */
    --pain-mild: #4a7c59;
    --pain-moderate: #8a5d1f;
    --pain-severe: #b85050;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);

    --app-bg-gradient:
        radial-gradient(circle at top left, rgba(74, 124, 89, 0.10), transparent 34rem),
        linear-gradient(180deg, rgba(240, 237, 232, 0.96) 0%, var(--bg-primary) 22rem);
    --card-border: rgba(58, 54, 52, 0.10);
    --card-shadow: 0 14px 40px rgba(0, 0, 0, 0.07);
    --hero-tint-a: rgba(74, 124, 89, 0.14);
    --hero-tint-b: rgba(184, 80, 80, 0.07);
    --hero-border: rgba(74, 124, 89, 0.30);
    --chip-bg: rgba(58, 54, 52, 0.05);
    --chip-border: rgba(58, 54, 52, 0.14);
    --surface-nav: rgba(253, 252, 251, 0.94);
    --surface-nav-border: rgba(58, 54, 52, 0.12);
    --surface-nav-shadow: 0 -16px 40px rgba(0, 0, 0, 0.10);
    --nav-active-bg: rgba(74, 124, 89, 0.12);
    --select-chevron: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%236b6560' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    --accent-green-hover: #3d6849;
    --accent-soft: rgba(74, 124, 89, 0.16);
    --surface-raised: rgba(58, 54, 52, 0.04);
    --trend-up-bg: rgba(184, 80, 80, 0.14);
    --trend-down-bg: rgba(74, 124, 89, 0.14);
    --pain-mild-soft: rgba(74, 124, 89, 0.22);
    --pain-moderate-soft: rgba(138, 93, 31, 0.22);
    --pain-severe-soft: rgba(184, 80, 80, 0.22);
    --surface-nav-blur: blur(18px);
    --surface-overlay: rgba(58, 54, 52, 0.45);
}

/* === HIGH CONTRAST THEME === */
:root[data-theme="high-contrast"] {
    --bg-primary: #000000;
    --bg-secondary: #1a1a1a;
    --bg-tertiary: #2d2d2d;
    --text-primary: #ffffff;
    --text-secondary: #d0d0d0;
    --border-color: #555555;
    --accent-green: #00ff88;
    --accent-red: #ff4444;
    --accent-blue: #4488ff;
    --pain-mild: #00ff88;
    --pain-moderate: #ffaa00;
    --pain-severe: #ff4444;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.5);

    /* Flat and opaque on purpose: gradients, blur and soft shadows all
       work against a high-contrast theme. */
    --app-bg-gradient: none;
    --card-border: #666666;
    --card-shadow: none;
    --hero-tint-a: transparent;
    --hero-tint-b: transparent;
    --hero-border: var(--accent-green);
    --chip-bg: #2d2d2d;
    --chip-border: #666666;
    --surface-nav: #000000;
    --surface-nav-border: #666666;
    --surface-nav-shadow: none;
    --nav-active-bg: #2d2d2d;
    --select-chevron: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%23d0d0d0' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    --accent-green-hover: #66ffb0;
    --accent-soft: #2d2d2d;
    --surface-raised: #2d2d2d;
    --trend-up-bg: #2d2d2d;
    --trend-down-bg: #2d2d2d;
    --pain-mild-soft: #2d2d2d;
    --pain-moderate-soft: #2d2d2d;
    --pain-severe-soft: #2d2d2d;
    --surface-nav-blur: none;
    --surface-overlay: rgba(0, 0, 0, 0.85);
}

/* === BASE STYLES === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    background: var(--bg-primary);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
    background-color: var(--bg-primary);
    background-image: var(--app-bg-gradient);
    color: var(--text-primary);
    line-height: 1.6;
    padding-bottom: calc(94px + env(safe-area-inset-bottom));
    transition: var(--transition);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

.container {
    max-width: 680px;
    margin: 0 auto;
    transition: margin-top 0.3s ease;
    padding: calc(18px + env(safe-area-inset-top)) 18px 24px;
}

.page {
    display: none;
    animation: fadeIn 0.3s ease;
}

.page.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

h1 {
    font-size: clamp(1.55rem, 5vw, 2.1rem);
    margin-bottom: var(--space-6);
    font-weight: 600;
    text-align: left;
    position: relative;
    letter-spacing: 0;
    padding-right: 48px;
}

.help-icon {
    position: absolute;
    top: 0;
    right: 0;
    background: var(--accent-green);
    color: var(--bg-primary);
    border: none;
    border-radius: var(--radius-circle);
    width: 36px;
    height: 36px;
    font-size: var(--text-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow);
    text-decoration: none;
}

.help-icon:hover {
    transform: scale(1.1);
    background: var(--accent-green-hover);
}

h2 {
    font-size: var(--text-lg);
    margin-bottom: var(--space-2);
    font-weight: 700;
    text-align: left;
}

.section-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    padding: var(--space-5);
    margin-bottom: var(--space-4);
    box-shadow: var(--card-shadow);
    border: 1px solid var(--card-border);
    max-width: 100%;
    overflow: hidden;
}

/* A .section-card that is drawing attention to itself. */
.active-episode-card {
    border-color: var(--accent-green);
    box-shadow: var(--shadow);
}

.app-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    margin-bottom: var(--space-4);
}

.brand-lockup {
    min-width: 0;
}

.brand-title {
    margin: 0;
    text-align: left;
    font-size: 1.75rem;
    line-height: 1.08;
    font-weight: 750;
}

.brand-subtitle {
    color: var(--text-secondary);
    font-size: var(--text-md);
    line-height: 1.35;
    margin-top: var(--space-1);
}

.topbar-actions {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    flex-shrink: 0;
}

.icon-btn {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    border: 1px solid var(--chip-border);
    background: var(--surface-raised);
    color: var(--text-primary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
}

.icon-btn:hover,
.icon-btn:focus-visible {
    border-color: var(--accent-green);
    color: var(--accent-green);
}

.today-hero {
    position: relative;
    overflow: hidden;
    background:
        linear-gradient(135deg, var(--hero-tint-a), var(--hero-tint-b)),
        var(--bg-secondary);
    border: 1px solid var(--hero-border);
}

.today-status-copy {
    color: var(--text-secondary);
    font-size: var(--text-md);
    line-height: 1.45;
}

.today-chips {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-top: var(--space-4);
}

/* Orientation line under the topbar — deliberately not a card, so the
   first card on the page is the primary action. */
.today-status-strip {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin: -6px 0 16px;
}

.today-chip {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: 8px 10px;
    border-radius: var(--radius-md);
    border: 1px solid var(--chip-border);
    background: var(--chip-bg);
    color: var(--text-secondary);
    font-size: var(--text-sm);
    line-height: 1;
}

.quick-log-card {
    scroll-margin-top: calc(18px + env(safe-area-inset-top));
}

/* Today's outlook (weather/ML risk) card */
.risk-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
    margin-bottom: var(--space-3);
}

.risk-card-header h2 {
    margin: 0;
}

.risk-card-badge {
    display: inline-flex;
    align-items: center;
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-pill);
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--bg-primary);
    background: var(--accent-green);
    white-space: nowrap;
}

.risk-meter {
    width: 100%;
    height: 10px;
    border-radius: var(--radius-pill);
    background: var(--surface-raised);
    overflow: hidden;
}

.risk-meter-fill {
    height: 100%;
    border-radius: var(--radius-pill);
    background: var(--accent-green);
    transition: width 0.4s ease, background-color 0.4s ease;
}

.risk-card-detail {
    color: var(--text-primary);
    font-size: var(--text-md);
    margin: var(--space-3) 0 0;
}

.risk-card-trend {
    color: var(--text-secondary);
    font-size: var(--text-sm);
    margin: var(--space-2) 0 0;
}

.risk-card-ml,
.risk-alert {
    padding: var(--space-3);
    border-radius: var(--radius-md);
    border-left: 3px solid transparent;
}

.risk-card-ml {
    margin-top: var(--space-3);
    background: var(--accent-soft);
    border-left-color: var(--accent-blue);
}

.risk-card-ml-value {
    font-size: var(--text-base);
    font-weight: 700;
    color: var(--text-primary);
}

.risk-card-ml-caveat {
    display: block;
    font-size: var(--text-xs);
    color: var(--text-secondary);
    margin-top: 2px;
}

.risk-card-alerts {
    margin-top: var(--space-3);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.risk-alert {
    background: var(--pain-moderate-soft);
    border-left-color: var(--pain-moderate);
}

.risk-alert-headline {
    font-size: var(--text-md);
    font-weight: 600;
    color: var(--text-primary);
}

.risk-alert-rec {
    display: block;
    font-size: var(--text-sm);
    color: var(--text-secondary);
    margin-top: 3px;
}

.pain-helper {
    color: var(--text-secondary);
    font-size: var(--text-md);
    margin: -10px 0 14px;
}

.care-grid {
    display: grid;
    gap: var(--space-3);
}

.care-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
    padding: var(--space-4);
    color: var(--text-primary);
    text-decoration: none;
    background: var(--bg-tertiary);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-md);
}

.care-link span {
    color: var(--text-secondary);
    display: block;
    font-size: var(--text-sm);
    margin-top: 3px;
}

.active-header {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-5);
    justify-content: center;
}

.pulse-indicator {
    font-size: var(--text-2xl);
    animation: pulse 3.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.75; }  /* Gentler fade - less jarring */
}

.active-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: var(--space-4);
    margin-bottom: var(--space-5);
}

.stat-item {
    text-align: center;
}

.stat-item .stat-label {
    display: block;
    font-size: var(--text-sm);
    color: var(--text-secondary);
    margin-bottom: var(--space-1);
}

.stat-item .stat-value {
    display: block;
    font-size: var(--text-2xl);
    font-weight: 600;
    color: var(--accent-green);
}

.active-actions {
    display: flex;
    gap: var(--space-3);
    flex-wrap: wrap;
}

.active-actions .btn {
    flex: 1 1 160px;
}

.relief-quick-btn:hover {
    background: var(--bg-primary) !important;
    border-color: var(--accent-green) !important;
    transform: scale(1.02);
}

.relief-quick-btn:active {
    transform: scale(0.98);
}

.chip-group {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.chip {
    /* inline-flex + a 44px floor so a chip is a comfortable tap target */
    display: inline-flex;
    align-items: center;
    min-height: 44px;
    padding: var(--space-2) var(--space-4);
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-pill);
    font-size: var(--text-sm);
}

.chip:hover {
    border-color: var(--accent-green);
}

.chip.selected {
    background: var(--accent-green);
    border-color: var(--accent-green);
    color: var(--bg-primary);
}

.chip:focus-visible {
    outline: 2px solid var(--accent-green);
    outline-offset: 2px;
}

/* Interactive head-pain map */
.head-map {
    width: 100%;
    max-width: 320px;
    height: auto;
    display: block;
    margin: 0 auto 4px;
}

.head-outline {
    fill: var(--bg-tertiary);
    stroke: var(--border-color);
    stroke-width: 1.5;
    pointer-events: none;
}

.head-zone {
    fill: transparent;
    stroke: var(--accent-green);
    stroke-width: 1.25;
    opacity: 0.55;
    cursor: pointer;
    transition: var(--transition);
}

.head-zone:hover {
    opacity: 0.9;
    fill: var(--accent-soft);
}

.head-zone.selected {
    fill: var(--accent-green);
    opacity: 0.85;
}

.head-zone:focus-visible {
    outline: 2px solid var(--accent-green);
    outline-offset: 2px;
}

.head-map-readonly .head-zone {
    cursor: default;
    pointer-events: none;
}

.head-map-caption {
    fill: var(--text-secondary);
    font-size: var(--text-xs);
}

.head-map-echo {
    color: var(--text-secondary);
    font-size: var(--text-sm);
    margin: var(--space-1) 0 0;
    text-align: center;
}

.form-group {
    margin-bottom: var(--space-5);
}

label {
    display: block;
    margin-bottom: var(--space-2);
    font-weight: 500;
    color: var(--text-primary);
}

input[type="text"],
input[type="time"],
input[type="date"],
select,
textarea {
    width: 100%;
    min-width: 0;
    padding: var(--space-3) var(--space-4);
    background: var(--bg-tertiary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: var(--text-base);
    font-family: inherit;
    transition: var(--transition);
}

input:focus,
select:focus,
textarea:focus {
    border-color: var(--accent-green);
    box-shadow: 0 0 0 3px var(--accent-soft);
}

/* Suppress the ring only for pointer focus; :focus-visible keeps it. */
input:focus:not(:focus-visible),
select:focus:not(:focus-visible),
textarea:focus:not(:focus-visible) {
    outline: none;
}

textarea {
    resize: vertical;
    min-height: 80px;
}

/* Pain Dropdown (replaces button grid) */
/* Inherits the shared field styling above; only the custom chevron
   and the affordance differ. The chevron colour comes from a token
   because a data URI cannot interpolate var(). */
.pain-dropdown {
    font-weight: 500;
    cursor: pointer;
    appearance: none;
    background-image: var(--select-chevron);
    background-repeat: no-repeat;
    background-position: right var(--space-3) center;
    background-size: 20px;
    padding-right: 44px;
}

.pain-dropdown:hover {
    border-color: var(--accent-green);
}

.pain-dropdown:focus:not(:focus-visible) {
    outline: none;
}

.pain-dropdown option {
    background: var(--bg-secondary);
    color: var(--text-primary);
    padding: var(--space-3);
}

/* Legacy pain scale styles (kept for modals/editing) */
.pain-scale {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: var(--space-2);
    margin-bottom: var(--space-2);
}

.pain-btn {
    padding: var(--space-3) var(--space-2);
    background: var(--bg-tertiary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: var(--text-base);
    font-weight: 600;
    min-height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.pain-btn:hover {
    background: var(--bg-secondary);
    transform: translateY(-2px);
}

.pain-btn.selected {
    background: var(--accent-green);
    border-color: var(--accent-green);
    color: var(--bg-primary);
}

.pain-labels {
    display: flex;
    justify-content: space-between;
    font-size: var(--text-sm);
    color: var(--text-secondary);
    margin-top: var(--space-1);
}

/* SVG Icon Styles */
.icon {
    width: 20px;
    height: 20px;
    stroke: currentColor;
    stroke-width: 2;
    fill: none;
    stroke-linecap: round;
    stroke-linejoin: round;
    display: inline-block;
    vertical-align: middle;
}

.icon-sm {
    width: 16px;
    height: 16px;
}

.icon-lg {
    width: 24px;
    height: 24px;
}

.optional-details {
    margin: var(--space-5) 0;
}

.toggle-details-btn {
    width: 100%;
    padding: 14px 16px;
    background: var(--bg-tertiary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: var(--text-base);
    font-weight: 500;
    text-align: left;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-2);
}

.toggle-details-btn:hover {
    border-color: var(--accent-green);
}

#details-arrow,
.toggle-arrow {
    transition: transform 0.2s ease;
}

#details-arrow.rotated,
.toggle-arrow.rotated {
    transform: rotate(180deg);
}

.optional-details-content {
    padding-top: var(--space-4);
}

/* === BUTTON FOUNDATION ===
   Every button in the app shares these; the classes below then differ
   only in the layout and colour that make them distinct. Previously
   each of the 16 button classes re-declared cursor/transition/font,
   and .update-btn and .install-prompt-btn omitted font-family so they
   rendered in the user-agent font rather than the app's. */
.btn,
.settings-btn,
.theme-btn,
.pain-btn,
.relief-quick-btn,
.calendar-nav-btn,
.toggle-details-btn,
.update-btn,
.dismiss-update-btn,
.install-prompt-btn,
.unlock-btn,
.modal-close,
.icon-btn,
.help-icon,
.nav-btn,
.segment-btn,
.btn-inline,
.calendar-day,
.chip {
    font-family: inherit;
    cursor: pointer;
    transition: var(--transition);
}

/* Busy state. The heaviest operations (PDF generation, key derivation)
   block the main thread, so the button must visibly change *before*
   the work starts or the app just appears frozen. */
.btn-spinner {
    display: inline-block;
    width: 14px;
    height: 14px;
    margin-right: var(--space-2);
    border: 2px solid currentColor;
    border-top-color: transparent;
    border-radius: var(--radius-circle);
    animation: spin 0.8s linear infinite;
    vertical-align: -2px;
}

[aria-busy="true"] {
    cursor: progress;
}

/* Press feedback. Every interactive control acknowledges a tap; before
   this only two of them did, so most of the app felt inert on touch. */
.btn:active,
.settings-btn:active,
.theme-btn:active,
.pain-btn:active,
.relief-quick-btn:active,
.calendar-nav-btn:active,
.toggle-details-btn:active,
.install-prompt-btn:active,
.unlock-btn:active,
.segment-btn:active,
.btn-inline:active,
.chip:active,
.calendar-day:active,
.nav-btn:active {
    transform: scale(0.97);
}

/* Disabled affordance. :disabled appeared nowhere in the stylesheet, so
   a button that had been disabled mid-operation looked identical to one
   waiting to be pressed. */
.btn:disabled,
.settings-btn:disabled,
.theme-btn:disabled,
.pain-btn:disabled,
.relief-quick-btn:disabled,
.calendar-nav-btn:disabled,
.toggle-details-btn:disabled,
.update-btn:disabled,
.install-prompt-btn:disabled,
.unlock-btn:disabled,
.segment-btn:disabled,
.btn-inline:disabled,
.chip:disabled,
input:disabled,
select:disabled,
textarea:disabled {
    opacity: 0.55;
    cursor: not-allowed;
    transform: none;
}

.btn:disabled:hover,
.settings-btn:disabled:hover,
.theme-btn:disabled:hover,
.unlock-btn:disabled:hover,
.install-prompt-btn:disabled:hover {
    background: inherit;
    border-color: inherit;
    transform: none;
}

/* A single visible focus ring. Only .chip and .head-zone had one, and
   the shared field rule skipped select, date and time inputs. */
.btn:focus-visible,
.settings-btn:focus-visible,
.theme-btn:focus-visible,
.pain-btn:focus-visible,
.relief-quick-btn:focus-visible,
.calendar-nav-btn:focus-visible,
.toggle-details-btn:focus-visible,
.update-btn:focus-visible,
.dismiss-update-btn:focus-visible,
.install-prompt-btn:focus-visible,
.unlock-btn:focus-visible,
.modal-close:focus-visible,
.icon-btn:focus-visible,
.nav-btn:focus-visible,
.segment-btn:focus-visible,
.btn-inline:focus-visible,
.care-link:focus-visible,
.calendar-day:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
.toggle-switch input:focus-visible + .toggle-slider {
    outline: 2px solid var(--accent-green);
    outline-offset: 2px;
}

/* Segmented control — a set of mutually exclusive choices. Selection
   is carried by aria-pressed, so the state is exposed to assistive
   tech instead of being implied by a "primary action" colour. */
/* Compact action button used inside lists and cards. */
.btn-inline {
    padding: var(--space-1) var(--space-3);
    border: none;
    border-radius: var(--radius-sm);
    font-size: var(--text-sm);
    color: var(--bg-primary);
    background: var(--accent-blue);
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    min-height: 32px;
}

.btn-inline.danger {
    background: var(--pain-moderate);
}

.btn-inline.floating {
    position: absolute;
    top: var(--space-2);
    right: var(--space-2);
}

.segmented {
    display: flex;
    gap: var(--space-2);
}

.segment-btn {
    padding: var(--space-1) var(--space-3);
    font-size: var(--text-sm);
    font-weight: 600;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    min-height: 36px;
}

.segment-btn[aria-pressed="true"] {
    background: var(--accent-green);
    border-color: var(--accent-green);
    color: var(--bg-primary);
}

/* Base rule for the relief shortcuts, whose entire appearance was
   previously an inline style repeated on all six buttons. */
.relief-quick-btn {
    padding: var(--space-3);
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: var(--text-md);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    min-height: 48px;
}

.btn {
    padding: 14px 24px;
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--text-base);
    font-weight: 600;
    width: 100%;
    min-width: 0;
    min-height: 48px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    line-height: 1.2;
    overflow-wrap: anywhere;
}

.btn-primary {
    background: var(--accent-green);
    color: var(--bg-primary);
    border: 2px solid var(--accent-green);
}

.btn-primary:hover {
    background: var(--accent-green-hover);
    border-color: var(--accent-green-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}

.btn-secondary:hover {
    border-color: var(--accent-green);
    transform: translateY(-2px);
}

.action-buttons {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-3);
    margin-top: var(--space-5);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--space-3);
    align-items: stretch;
}

.stat-box {
    background: var(--bg-tertiary);
    padding: var(--space-4) var(--space-3);
    border-radius: var(--radius-md);
    text-align: center;
    border: 1px solid var(--border-color);
    min-width: 0;
    min-height: 108px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.stat-box .stat-number {
    width: 100%;
    min-height: 2.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: clamp(1.55rem, 8vw, 2rem);
    font-weight: 700;
    color: var(--accent-green);
    line-height: 1;
    margin-bottom: var(--space-2);
    overflow-wrap: anywhere;
}

.stat-box .stat-label {
    font-size: var(--text-md);
    color: var(--text-secondary);
    line-height: 1.2;
    min-height: 2.2em;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.stat-comparison {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    line-height: 1.2;
    margin-top: var(--space-2);
    min-height: 1.2em;
    overflow-wrap: anywhere;
}

.calendar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-4);
}

.calendar-header h3 {
    min-width: 0;
    text-align: center;
    line-height: 1.2;
    overflow-wrap: anywhere;
}

.calendar-nav-btn {
    padding: var(--space-2) var(--space-4);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: var(--text-lg);
    flex-shrink: 0;
}

.calendar-nav-btn:hover {
    background: var(--bg-secondary);
}

.analytics-metrics {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-4);
    margin-bottom: var(--space-5);
    margin-top: var(--space-4);
}

/* Weather Correlation Styles */
.correlation-summary {
    display: flex;
    flex-direction: column;
    gap: var(--space-5);
}

.correlation-stat {
    text-align: center;
    padding: var(--space-5);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.correlation-label {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--space-2);
}

.correlation-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-green);
    margin-bottom: var(--space-1);
}

.correlation-desc {
    font-size: var(--text-md);
    color: var(--text-secondary);
}

.correlation-details {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.detail-row,
.info-row {
    display: flex;
    justify-content: space-between;
    padding: var(--space-3);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    font-size: var(--text-md);
}

.detail-row span {
    color: var(--text-secondary);
}

.detail-row strong {
    color: var(--text-primary);
}

/* Compact monthly stats for calendar */
.monthly-stats-compact {
    background: var(--bg-tertiary);
    padding: var(--space-4);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-5);
    margin-top: var(--space-4);
    border: 1px solid var(--border-color);
}

.stat-line {
    margin-bottom: var(--space-2);
    line-height: 1.6;
}

.stat-line:last-child {
    margin-bottom: 0;
}

.monthly-stats-compact .stat-number {
    font-size: var(--text-3xl);
    font-weight: 700;
    color: var(--text-primary);
}

.stat-text {
    font-size: var(--text-base);
    color: var(--text-primary);
    margin-left: var(--space-1);
}

.stat-trend,
.stat-change {
    font-size: var(--text-sm);
    font-weight: 600;
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-pill);
    display: inline-block;
}

.stat-trend {
    margin-left: var(--space-2);
}

.stat-trend.positive {
    background: var(--trend-up-bg);
    color: var(--pain-severe);
}

.stat-trend.negative {
    background: var(--trend-down-bg);
    color: var(--accent-green);
}

.stat-trend.neutral {
    background: var(--bg-secondary);
    color: var(--text-secondary);
}

.stat-label-text {
    font-weight: 600;
    color: var(--text-secondary);
    margin-right: var(--space-2);
}

.stat-status {
    font-weight: 600;
}

/* Analytics page stat cards */
.stat-card {
    background: var(--bg-tertiary);
    padding: var(--space-5);
    border-radius: var(--radius-lg);
    text-align: center;
    border: 1px solid var(--border-color);
}

.stat-card .stat-value {
    font-size: var(--text-4xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-1);
}

.stat-card .stat-label {
    font-size: var(--text-md);
    color: var(--text-secondary);
    margin-bottom: var(--space-2);
}

.stat-change.positive {
    background: var(--trend-up-bg);
    color: var(--pain-severe);
}

.stat-change.negative {
    background: var(--trend-down-bg);
    color: var(--accent-green);
}

.stat-change.neutral {
    background: var(--bg-secondary);
    color: var(--text-secondary);
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: var(--space-2);
    margin-bottom: var(--space-4);
}

.calendar-day {
    aspect-ratio: 1;
    /* 44px floor: with aspect-ratio alone these fell to ~36px on a
       360px viewport, below a comfortable tap target. */
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border-radius: var(--radius-md);
    font-size: var(--text-md);
    font-family: inherit;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
    position: relative;
}

.calendar-day:hover {
    background: var(--bg-secondary);
}

.calendar-day.empty {
    background: transparent;
    cursor: default;
}

.calendar-day.today {
    border-color: var(--accent-blue);
}

.calendar-day.has-episode {
    font-weight: 600;
}

.calendar-day.mild {
    background: var(--pain-mild);
    color: var(--bg-primary);
}

.calendar-day.moderate {
    background: var(--pain-moderate);
    color: var(--bg-primary);
}

.calendar-day.severe {
    background: var(--pain-severe);
    color: var(--bg-primary);
}

.calendar-day.mild-continuation {
    background: var(--pain-mild-soft);
    color: var(--text-primary);
}

.calendar-day.moderate-continuation {
    background: var(--pain-moderate-soft);
    color: var(--text-primary);
}

.calendar-day.severe-continuation {
    background: var(--pain-severe-soft);
    color: var(--text-primary);
}

.calendar-day.active-indicator::after {
    content: '•';
    position: absolute;
    top: 2px;
    right: 2px;
    font-size: var(--text-xs);
}

.pressure-indicator {
    position: absolute;
    top: 2px;
    left: 2px;
    font-size: var(--text-xs);
    font-weight: 700;
    opacity: 0.8;
}

.calendar-legend {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
    font-size: var(--text-sm);
    color: var(--text-secondary);
    flex-wrap: wrap;
}

.legend-dot {
    display: inline-block;
    width: 12px;
    height: 12px;
    border-radius: var(--radius-circle);
    margin-right: var(--space-2);
}

.legend-dot.mild {
    background: var(--pain-mild);
}

.legend-dot.moderate {
    background: var(--pain-moderate);
}

.legend-dot.severe {
    background: var(--pain-severe);
}

#history-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.history-item {
    background: var(--bg-secondary);
    border-radius: var(--radius);
    padding: var(--space-5);
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: var(--transition);
}

.history-item:hover {
    border-color: var(--accent-green);
    transform: translateX(4px);
}

.history-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--space-3);
}

.history-date {
    font-size: var(--text-base);
    font-weight: 600;
}

.history-time {
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

.history-details {
    display: flex;
    gap: var(--space-5);
    margin-bottom: var(--space-3);
    flex-wrap: wrap;
}

.history-detail {
    display: flex;
    flex-direction: column;
}

.detail-label {
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

.detail-value {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--accent-green);
}

.history-actions {
    display: flex;
    gap: var(--space-2);
    margin-top: var(--space-3);
}

.history-actions button {
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-md);
}

.settings-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.info-label {
    color: var(--text-secondary);
}

.info-value {
    font-weight: 600;
    color: var(--text-primary);
}

.settings-actions {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.settings-btn {
    width: 100%;
    padding: var(--space-4);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: var(--text-base);
    text-align: left;
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.settings-btn:hover {
    background: var(--bg-secondary);
    border-color: var(--accent-green);
}

.settings-btn.danger {
    border-color: var(--accent-red);
}

.settings-btn.danger:hover {
    background: rgba(201, 104, 104, 0.1);
}

.btn-subtitle {
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

.settings-group {
    margin-bottom: var(--space-5);
}

.settings-label {
    display: block;
    margin-bottom: var(--space-3);
    font-weight: 500;
    text-align: center;
}

.theme-options {
    display: flex;
    gap: var(--space-3);
}

.theme-btn {
    flex: 1;
    padding: var(--space-4);
    background: var(--bg-tertiary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-1);
}

.theme-btn:hover {
    border-color: var(--accent-green);
    transform: translateY(-2px);
}

.theme-btn.active {
    border-color: var(--accent-green);
    border-width: 3px;
    background: var(--bg-secondary);
}

.theme-btn span:first-child {
    font-size: var(--text-2xl);
}

.theme-btn span:last-child {
    font-size: var(--text-md);
}

/* === TOGGLE SWITCH === */
.toggle-switch {
    position: relative;
    display: inline-flex;
    align-items: center;
    width: 50px;
    /* The switch reads as 26px but takes a full 44px of hit area. */
    height: 44px;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

/* Drawn at 26px and centred within the 44px hit area, so the switch
   looks unchanged while being comfortably tappable. */
.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 50%;
    transform: translateY(-50%);
    left: 0;
    right: 0;
    height: 26px;
    background-color: var(--border-color);
    transition: background-color 0.3s;
    border-radius: var(--radius-pill);
}

.toggle-slider:before {
    position: absolute;
    content: "";
    height: 20px;
    width: 20px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: 0.3s;
    border-radius: var(--radius-circle);
}

input:checked + .toggle-slider {
    background-color: var(--accent-green);
}

input:checked + .toggle-slider:before {
    transform: translateX(24px);
}

.app-info {
    text-align: center;
    padding: var(--space-5);
    color: var(--text-secondary);
    font-size: var(--text-md);
}

.bottom-nav {
    position: fixed;
    bottom: 0;
    /* Centered via left/right/margin rather than a transform: iOS
       Safari can desync a fixed element's transform from the
       viewport during momentum scrolling, making it appear to
       drift away from the true bottom of the screen. */
    left: 0;
    right: 0;
    margin: 0 auto;
    width: 100%;
    max-width: 680px;
    background: var(--surface-nav);
    border-top: 1px solid var(--surface-nav-border);
    display: flex;
    justify-content: space-around;
    padding: 8px 8px calc(8px + env(safe-area-inset-bottom));
    box-shadow: var(--surface-nav-shadow);
    z-index: var(--z-nav);
    backdrop-filter: var(--surface-nav-blur);
    -webkit-backdrop-filter: var(--surface-nav-blur);
}

.nav-btn {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-2) var(--space-1);
    background: none;
    border: none;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    min-width: 0;
}

.nav-btn:hover {
    color: var(--text-primary);
}

.nav-btn.active {
    color: var(--accent-green);
    background: var(--nav-active-bg);
}

.nav-icon {
    width: 24px;
    height: 24px;
    stroke: currentColor;
    stroke-width: 2;
    fill: none;
}

.nav-label {
    font-size: var(--text-xs);
    font-weight: 500;
    line-height: 1.1;
    max-width: 100%;
    text-align: center;
    overflow-wrap: anywhere;
}

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--surface-overlay);
    z-index: var(--z-modal);
    animation: fadeIn 0.2s ease;
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-5);
}

.modal-content {
    background: var(--bg-secondary);
    border-radius: var(--radius);
    max-width: 500px;
    width: 100%;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-5);
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    margin: 0;
    font-size: var(--text-xl);
    text-align: left;
}

.modal-close {
    background: none;
    border: none;
    flex-shrink: 0;
    font-size: var(--text-2xl);
    color: var(--text-secondary);
    padding: 0;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-circle);
}

.modal-close:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.modal-body {
    padding: var(--space-5);
    line-height: 1.8;
}

.modal-body h3 {
    margin-top: var(--space-5);
    margin-bottom: var(--space-3);
    color: var(--accent-green);
}

.modal-body p {
    margin-bottom: var(--space-3);
}

.modal-body ul {
    margin-left: var(--space-5);
    margin-bottom: var(--space-3);
}

.modal-actions {
    padding: var(--space-4) var(--space-5);
    border-top: 1px solid var(--border-color);
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
    justify-content: flex-end;
}

.modal-actions .btn {
    width: auto;
    min-width: 100px;
}

@media (max-width: 600px) {
    .container {
        padding: calc(14px + env(safe-area-inset-top)) 14px 18px;
    }

    h1 {
        font-size: var(--text-2xl);
    }

    .brand-title {
        font-size: 1.45rem;
    }

    .brand-subtitle {
        font-size: var(--text-sm);
    }

    .section-card {
        padding: var(--space-4);
        margin-bottom: var(--space-3);
    }

    .pain-scale {
        gap: var(--space-2);
    }

    .pain-btn {
        min-height: 44px;
        font-size: var(--text-md);
    }

    .stats-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: var(--space-3);
    }

    .stat-box {
        min-height: 100px;
        padding: var(--space-3) var(--space-3);
    }

    .stat-label,
        .action-buttons,
    .active-actions {
        gap: var(--space-3);
    }

    .action-buttons .btn,
    .active-actions .btn {
        padding-left: var(--space-3);
        padding-right: var(--space-3);
    }

    .modal-actions {
        justify-content: stretch;
    }

    .modal-actions .btn {
        flex: 1 1 120px;
    }

    .theme-options {
        flex-direction: column;
    }

    .theme-btn {
        flex-direction: row;
        justify-content: flex-start;
    }
}

/* Update Banner */
.update-banner {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--accent-blue);
    color: var(--bg-primary);
    padding: var(--space-3) var(--space-4);
    z-index: var(--z-banner);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
    from {
        transform: translateY(-100%);
    }
    to {
        transform: translateY(0);
    }
}

.update-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    max-width: 600px;
    margin: 0 auto;
}

.update-icon {
    flex-shrink: 0;
}

.update-text {
    font-weight: 600;
    flex: 1;
    text-align: left;
}

.update-btn {
    background: var(--bg-secondary);
    color: var(--accent-blue);
    border: none;
    padding: var(--space-2) var(--space-5);
    border-radius: var(--radius-pill);
    font-weight: 700;
    font-size: var(--text-md);
    transition: transform 0.2s ease;
}

.update-btn:hover {
    transform: scale(1.05);
}

.update-btn:active {
    transform: scale(0.95);
}

.dismiss-update-btn {
    min-width: 44px;
    min-height: 44px;
    background: transparent;
    border: none;
    color: var(--bg-primary);
    font-size: var(--text-2xl);
    cursor: pointer;
    padding: 0 var(--space-2);
    line-height: 1;
    opacity: 0.8;
}

.dismiss-update-btn:hover {
    opacity: 1;
}

/* Push content down when banner is visible */
.container.with-update-banner {
    margin-top: 60px;
}

/* ============================================
   PHASE 1: OFFLINE/ONLINE INDICATORS
   ============================================ */

.status-banner {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    padding: 10px 16px;
    z-index: var(--z-indicator);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    animation: slideDown 0.3s ease-out;
    text-align: center;
    font-weight: 600;
    font-size: var(--text-md);
}

.offline-banner {
    background: var(--pain-moderate);
    color: var(--bg-primary);
}

.online-banner {
    background: var(--accent-green);
    color: var(--bg-primary);
}

.container.with-status-banner {
    margin-top: 50px;
}

.container.with-update-banner.with-status-banner {
    margin-top: 110px;
}

/* ============================================
   PHASE 1: INSTALL PROMPT
   ============================================ */

.install-prompt {
    position: fixed;
    bottom: 80px;
    left: 16px;
    right: 16px;
    max-width: 500px;
    margin: 0 auto;
    background: linear-gradient(135deg, var(--accent-green) 0%, var(--accent-green-hover) 100%);
    color: var(--bg-primary);
    padding: var(--space-5);
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    z-index: var(--z-prompt);
    animation: slide-up-sheet 0.4s ease-out;
}

@keyframes slide-up-sheet {
    from {
        transform: translateY(100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.install-prompt-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.install-prompt-header {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.install-prompt-icon {
    flex-shrink: 0;
}

.install-prompt-text {
    flex: 1;
}

.install-prompt-title {
    font-weight: 700;
    font-size: var(--text-lg);
    margin-bottom: var(--space-1);
}

.install-prompt-desc {
    font-size: var(--text-sm);
    opacity: 0.9;
}

.install-prompt-actions {
    display: flex;
    gap: var(--space-3);
}

.install-prompt-btn {
    flex: 1;
    padding: var(--space-3) var(--space-5);
    border: none;
    border-radius: var(--radius-md);
    font-weight: 700;
}

.install-prompt-btn.primary {
    background: white;
    color: var(--accent-green);
}

.install-prompt-btn.primary:hover {
    transform: scale(1.05);
}

.install-prompt-btn.secondary {
    background: transparent;
    border: 2px solid var(--bg-primary);
    color: var(--bg-primary);
}

.install-prompt-btn.secondary:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* ============================================
   PHASE 1: WAKE LOCK INDICATOR
   ============================================ */

.wake-lock-indicator {
    position: fixed;
    bottom: 100px;
    right: 20px;
    background: var(--surface-overlay);
    backdrop-filter: blur(10px);
    color: white;
    padding: 10px 16px;
    border-radius: var(--radius-pill);
    font-size: var(--text-sm);
    display: flex;
    align-items: center;
    gap: var(--space-2);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    z-index: var(--z-overlay);
}

.wake-lock-icon {
    flex-shrink: 0;
}

/* ============================================
   PHASE 1: BIOMETRIC AUTH LOCK SCREEN
   ============================================ */

.lock-screen {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-primary);
    z-index: var(--z-loading);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-6);
}

.lock-screen-icon {
    width: 56px;
    height: 56px;
    stroke: var(--accent-green);
    fill: none;
    stroke-width: 1.5;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.lock-screen-title {
    font-size: var(--text-2xl);
    font-weight: 600;
    color: var(--text-primary);
}

.lock-screen-subtitle {
    font-size: var(--text-base);
    color: var(--text-secondary);
    text-align: center;
    padding: 0 var(--space-5);
}

.unlock-btn {
    padding: var(--space-4) var(--space-10);
    background: var(--accent-green);
    color: var(--bg-primary);
    border: none;
    border-radius: var(--radius-lg);
    font-size: var(--text-lg);
    font-weight: 700;
    box-shadow: var(--shadow);
}

.unlock-btn:hover {
    transform: translateY(-2px);
    background: var(--accent-green-hover);
}

/* ============================================
   ACCESSIBILITY: REDUCED MOTION SUPPORT
   ============================================ */

/* Respect user's motion preferences - critical for migraine sufferers */
.skip-link {
    position: absolute;
    left: var(--space-2);
    top: -100px;
    z-index: var(--z-loading);
    padding: var(--space-3) var(--space-4);
    background: var(--accent-green);
    color: var(--bg-primary);
    border-radius: var(--radius-md);
    font-weight: 600;
    text-decoration: none;
    transition: top 0.15s ease;
}

.skip-link:focus {
    top: var(--space-2);
}

/* === TOASTS ===
   Brief confirmations that don't interrupt. Replaces the native
   alert() dialogs, which on an installed PWA render as system sheets
   the user must dismiss before they can carry on. */
.toast-region {
    position: fixed;
    left: 50%;
    transform: translateX(-50%);
    bottom: calc(96px + env(safe-area-inset-bottom));
    width: min(92vw, 420px);
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    z-index: var(--z-indicator);
    pointer-events: none;
}

.toast {
    pointer-events: auto;
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-md);
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--card-border);
    border-left: 4px solid var(--accent-green);
    box-shadow: var(--card-shadow);
    font-size: var(--text-md);
    line-height: 1.4;
    animation: slideUp 0.25s ease;
}

.toast.error {
    border-left-color: var(--pain-severe);
}

.toast.warning {
    border-left-color: var(--pain-moderate);
}

.toast-text {
    flex: 1;
    min-width: 0;
    overflow-wrap: anywhere;
}

.toast-dismiss {
    flex-shrink: 0;
    background: none;
    border: none;
    color: var(--text-secondary);
    padding: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}

@media (min-width: 900px) {
    .toast-region {
        bottom: auto;
        top: 88px;
    }
}

/* === WIDE SCREENS ===
   The app is deliberately a single centred column, but a bar pinned to
   the bottom of a 1440px window reads as a phone UI someone forgot to
   adapt. Above 900px the same nav moves to the top of the window, where
   it reads as a header. Nothing else about the column changes. */
@media (min-width: 900px) {
    .bottom-nav {
        top: 0;
        bottom: auto;
        left: 0;
        right: 0;
        width: 100%;
        max-width: none;
        transform: none;
        justify-content: center;
        gap: var(--space-2);
        padding: var(--space-2);
        border-top: none;
        border-bottom: 1px solid var(--surface-nav-border);
        box-shadow: 0 16px 40px rgba(0, 0, 0, 0.12);
    }

    .nav-btn {
        flex: 0 1 130px;
        flex-direction: row;
        gap: var(--space-2);
        padding: var(--space-2) var(--space-4);
    }

    .nav-label {
        font-size: var(--text-md);
    }

    body {
        /* room for the header instead of the bottom bar */
        padding-top: 72px;
        padding-bottom: var(--space-8);
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

    /* Killing the duration alone left every transform to jump straight
       to its end state, which is the motion itself, not a softer
       version of it. Suppress the movement instead. */
    .btn:hover, .btn:active,
    .settings-btn:hover, .settings-btn:active,
    .theme-btn:hover, .theme-btn:active,
    .pain-btn:hover, .pain-btn:active,
    .relief-quick-btn:hover, .relief-quick-btn:active,
    .calendar-nav-btn:hover, .calendar-nav-btn:active,
    .toggle-details-btn:hover, .toggle-details-btn:active,
    .update-btn:hover, .update-btn:active,
    .install-prompt-btn:hover, .install-prompt-btn:active,
    .unlock-btn:hover, .unlock-btn:active,
    .segment-btn:hover, .segment-btn:active,
    .btn-inline:hover, .btn-inline:active,
    .chip:hover, .chip:active,
    .nav-btn:hover, .nav-btn:active,
    .help-icon:hover,
    .history-item:hover,
    .care-link:hover,
    .calendar-day:hover {
        transform: none !important;
    }

    /* Completely disable the pulse animation */
    .pulse-indicator {
        animation: none !important;
        opacity: 1 !important;
    }

    .loading-logo,
    .loading-spinner {
        animation: none !important;
    }

    .loading-spinner {
        border-top-color: var(--accent-green);
    }
}

/* ============================================
   LOADING SCREEN
   ============================================ */

#app-loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: var(--z-banner);
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

#app-loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.loading-content {
    text-align: center;
    padding: var(--space-5);
}

.loading-logo {
    width: 72px;
    height: 72px;
    margin: 0 auto 20px;
    border-radius: var(--radius-circle);
    background: var(--accent-green);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--bg-primary);
    animation: pulse-scale 2s ease-in-out infinite;
}

.loading-title {
    font-size: var(--text-2xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-2);
}

.loading-subtitle {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    margin-bottom: var(--space-8);
}

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--border-color);
    border-top-color: var(--accent-green);
    border-radius: var(--radius-circle);
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

.loading-progress {
    width: 200px;
    height: 4px;
    background: var(--border-color);
    border-radius: 2px;
    overflow: hidden;
    margin: 0 auto;
}

.loading-progress-bar {
    height: 100%;
    background: var(--accent-green);
    width: 0%;
    transition: width 0.3s ease;
    border-radius: 2px;
}

.loading-status {
    font-size: var(--text-xs);
    color: var(--text-secondary);
    margin-top: var(--space-4);
    min-height: 18px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

@keyframes pulse-scale {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.05); opacity: 0.8; }
}