/* === DESIGN TOKENS === */
:root {
    --color-primary: #E60000;
    --color-primary-hover: #B91C1C;
    --color-primary-light: #FEE2E2;
    --color-secondary: #333333;
    --color-neutral-900: #0F172A;
    --color-neutral-700: #475569;
    --color-neutral-500: #94A3B8;
    --color-neutral-200: #E2E8F0;
    --color-neutral-50: #F8FAFC;
    --color-white: #FFFFFF;
    --color-success: #16A34A;
    --color-warning: #F59E0B;
    --color-error: #EF4444;

    --color-background: var(--color-neutral-50);
    --color-text: var(--color-neutral-900);
    --color-card-bg: var(--color-white);
    --color-border: var(--color-neutral-200);

    --font-heading: 'Onest', sans-serif;
    --font-body: 'Onest', system-ui, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;  /* numeric arrival times only */

    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-full: 9999px;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 10px rgba(0,0,0,0.08);
    --transition-fast: 150ms ease-out;
}

.theme-dark {
    --color-background: #0F172A;
    --color-text: #F8FAFC;
    --color-card-bg: #1D3557;
    --color-border: #475569;
    --color-primary-light: #7F1D1D;
    --color-neutral-50: #14223b;
    --color-neutral-700: #cbd5e1;
    --color-neutral-500: #94A3B8;
}

/* === RESET === */
*, *::before, *::after { box-sizing: border-box; }
html, body { height: 100%; }
body {
    margin: 0;
    font-family: var(--font-body);
    background: var(--color-background);
    color: var(--color-text);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    overflow: hidden;               /* PAGE never scrolls */
    transition: background-color var(--transition-fast), color var(--transition-fast);
}
/* Text size: scale the ROOT so every rem-based size in the UI grows together. */
html { font-size: 100%; }
html.text-size-large  { font-size: 118%; }
html.text-size-xlarge { font-size: 136%; }

.sr-only {
    position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
    overflow: hidden; clip: rect(0,0,0,0); border: 0;
}
.skip-link {
    position: absolute; top: -48px; left: 0; background: var(--color-primary);
    color: #fff; padding: 8px 12px; z-index: 1000; text-decoration: none;
}
.skip-link:focus { top: 0; }

/* === APP SHELL: full-height flex column === */
.app {
    height: 100dvh;
    max-width: 640px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background: var(--color-background);
    border-inline: 1px solid var(--color-border);
}

/* === HEADER === */
.header {
    flex: none;
    background: var(--color-card-bg);
    border-bottom: 2px solid var(--color-border);
    padding: 10px 16px;
}
.header__top-row {
    display: flex; align-items: center; justify-content: space-between;
    gap: 12px; margin-bottom: 10px;
}
.app-logo {
    font-family: var(--font-heading);
    font-size: 1.4rem; font-weight: 700;
    color: var(--color-primary); margin: 0; white-space: nowrap;
}
.global-controls { display: flex; align-items: center; gap: 8px; }
.icon-btn {
    width: 42px; height: 42px; border-radius: var(--radius-md);
    border: 2px solid var(--color-border); background: var(--color-card-bg);
    color: var(--color-text); cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    font-family: var(--font-heading); font-weight: 700; font-size: 1rem;
}
.icon-btn:hover { border-color: var(--color-primary); }
.language-toggle { display: flex; background: var(--color-neutral-200); padding: 3px; border-radius: var(--radius-md); }
.language-toggle button {
    border: none; padding: 7px 10px; border-radius: var(--radius-sm); cursor: pointer;
    font-weight: 600; font-size: 0.8rem; background: transparent; color: var(--color-neutral-700);
    min-height: 36px;
}
.language-toggle button[aria-pressed="true"] { background: var(--color-card-bg); color: var(--color-primary); box-shadow: var(--shadow-sm); }

/* Favourites — single horizontal scroll strip */
.favorite-card-list {
    display: flex; gap: 8px; overflow-x: auto; overflow-y: hidden;
    padding-bottom: 2px; scrollbar-width: none;
}
.favorite-card-list::-webkit-scrollbar { display: none; }
.favorite-card {
    flex: 0 0 auto; min-width: 132px; max-width: 200px;
    text-align: left; background: var(--color-card-bg);
    border: 2px solid var(--color-border); padding: 8px 12px;
    border-radius: var(--radius-md); cursor: pointer; transition: all var(--transition-fast);
    color: var(--color-text); font-family: inherit;
}
.favorite-card:hover { border-color: var(--color-primary); }
.favorite-card.active { border-color: var(--color-primary); background: var(--color-primary-light); }
.favorite-card .stop-name { font-weight: 700; font-size: 0.92rem; display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.favorite-card .stop-meta { font-size: 0.72rem; color: var(--color-neutral-500); font-family: var(--font-mono); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; display: block; }

/* === MAIN === */
.main {
    flex: 1; min-height: 0;       /* allow inner panes to shrink/scroll */
    display: flex; flex-direction: column; gap: 10px;
    padding: 12px 16px calc(12px + env(safe-area-inset-bottom));
    overflow: hidden;
}

/* Search */
.search-row { flex: none; display: flex; flex-direction: column; gap: 8px; }
#stop-search {
    width: 100%; padding: 13px 14px; font-size: 1.05rem;
    border: 2px solid var(--color-border); border-radius: var(--radius-md);
    background: var(--color-card-bg); color: var(--color-text);
}
#stop-search:focus { outline: 3px solid var(--color-primary-light); border-color: var(--color-primary); }
.search-actions { display: flex; gap: 8px; }
.button-primary {
    flex: 1; display: flex; align-items: center; justify-content: center; gap: 8px;
    padding: 11px 16px; font-weight: 600; font-size: 1rem; border-radius: var(--radius-md);
    cursor: pointer; border: 2px solid var(--color-primary); background: var(--color-primary);
    color: #fff; min-height: 48px; transition: all var(--transition-fast);
}
.button-primary:hover { background: var(--color-primary-hover); border-color: var(--color-primary-hover); }
.button-secondary-style { background: var(--color-card-bg); color: var(--color-primary); }
.button-secondary-style:hover { background: var(--color-primary-light); }

/* Map — compact, fixed slice of the viewport */
.map-wrapper {
    flex: none; height: 19vh; min-height: 104px; max-height: 190px;
    border-radius: var(--radius-lg); border: 2px solid var(--color-border);
    overflow: hidden; position: relative; box-shadow: var(--shadow-sm);
}
#map { height: 100%; width: 100%; background: var(--color-neutral-200); }
.map-attribution {
    position: absolute; bottom: 0; right: 0; background: rgba(255,255,255,0.92);
    color: #333; padding: 3px 7px; font-size: 10px; z-index: 1000;
    display: flex; align-items: center; gap: 4px; border-top-left-radius: var(--radius-sm);
}

/* Arrivals — fills remaining space, scrolls INTERNALLY */
.arrivals { flex: 1; min-height: 0; display: flex; flex-direction: column; }
.arrivals-header {
    flex: none; display: flex; align-items: flex-start; justify-content: space-between;
    gap: 12px; margin-bottom: 8px;
}
.arrivals-title { min-width: 0; }
.section__title { font-family: var(--font-heading); font-size: 1.25rem; margin: 0; }
.selected-stop {
    display: block; font-size: 0.82rem; color: var(--color-neutral-700);
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 60vw;
}
.refresh-bar { display: flex; align-items: center; gap: 12px; flex: none; }
.status-stamp { font-family: var(--font-mono); font-size: 0.72rem; color: var(--color-neutral-500); white-space: nowrap; }
.button-circular {
    width: 52px; height: 52px; border-radius: var(--radius-full); padding: 0;
    border: none; background: var(--color-primary); color: #fff; cursor: pointer;
    display: flex; align-items: center; justify-content: center;
}
.button-circular:hover { background: var(--color-primary-hover); }

.arrival-list {
    flex: 1; min-height: 0; overflow-y: auto;
    display: flex; flex-direction: column; gap: 10px;
    -webkit-overflow-scrolling: touch; padding-right: 2px;
}

.arrival-card {
    background: var(--color-card-bg); border: 1px solid var(--color-border);
    border-left: 6px solid var(--color-primary); border-radius: var(--radius-md);
    padding: 12px 16px; display: flex; justify-content: space-between; align-items: center;
    gap: 12px; box-shadow: var(--shadow-sm);
}
.service-info { display: flex; flex-direction: column; gap: 2px; min-width: 56px; }
.service-no { font-family: var(--font-heading); font-size: 1.45rem; font-weight: 700; color: var(--color-primary); }
.service-dest { font-size: 0.78rem; color: var(--color-neutral-700); }

.arrival-times { display: flex; align-items: center; gap: 18px; text-align: right; }
.arrival-main { display: flex; flex-direction: column; align-items: flex-end; }
.time-huge { font-family: var(--font-mono); font-size: 2.2rem; font-weight: 700; line-height: 1; color: var(--color-primary); }
.time-clock { font-family: var(--font-mono); font-size: 0.72rem; color: var(--color-neutral-700); margin-top: 2px; }
.arrival-secondary-group { display: flex; flex-direction: column; gap: 8px; border-left: 1px solid var(--color-border); padding-left: 14px; }
.arrival-line { display: flex; flex-direction: column; align-items: flex-end; }
.secondary-time { font-family: var(--font-mono); font-size: 1rem; font-weight: 600; color: var(--color-neutral-700); }

.crowding-badge {
    display: inline-flex; align-items: center; gap: 4px; margin-top: 3px;
    padding: 2px 8px; border-radius: var(--radius-full); font-size: 0.66rem; font-weight: 600;
    color: #fff; width: fit-content;
}
.crowding-low  { background: var(--color-success); }
.crowding-med  { background: var(--color-warning); color: var(--color-neutral-900); }
.crowding-high { background: var(--color-error); }
.crowding-icon { width: 12px; height: 12px; fill: currentColor; }
.wc-icon { width: 14px; height: 14px; fill: var(--color-neutral-500); margin-left: 3px; }

.pulse-flash { animation: pulse-flash-anim 0.6s ease-out; }
@keyframes pulse-flash-anim {
    0% { transform: scale(1); } 50% { transform: scale(1.06); color: var(--color-primary-hover); } 100% { transform: scale(1); }
}
@media (prefers-reduced-motion: reduce) { .pulse-flash { animation: none; } }

.initial-placeholder {
    text-align: center; padding: 28px 20px; margin: auto 0;
    color: var(--color-neutral-700); font-size: 0.95rem;
}
.initial-placeholder p { margin: 0; }

/* Slightly wider screens: search + map side by side to save vertical space */
@media (min-width: 560px) and (min-height: 560px) {
    .main { display: grid; grid-template-columns: 1fr 1fr; grid-template-rows: auto 1fr; gap: 12px; }
    .search-row { grid-column: 1; grid-row: 1; align-self: start; }
    .map-wrapper { grid-column: 2; grid-row: 1; height: auto; min-height: 150px; max-height: none; }
    .arrivals { grid-column: 1 / -1; grid-row: 2; }
}

/* Desktop / large screens: present the app as a centred phone-style card */
@media (min-width: 700px) {
    body { display: flex; align-items: center; justify-content: center; padding: 20px;
           background: var(--color-neutral-200); }
    .theme-dark { background: #0a1120; }
    .app {
        height: min(100dvh - 40px, 900px);
        border: 1px solid var(--color-border);
        border-radius: 20px;
        box-shadow: 0 12px 40px rgba(0,0,0,0.18);
    }
}