:root {
    color-scheme: light;
    --primary-color: #0072bc;
    /* Default MTR Blue */
    --background-color: #f5f7fa;
    --card-bg: #ffffff;
    --text-main: #1f2937;
    --text-secondary: #6b7280;
    --border-color: #e5e7eb;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --line-contrast-color: #ffffff;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --radius-md: 12px;
    --radius-lg: 16px;
    --font-family: 'Inter', sans-serif;
    --guide-color: #0f766e;
    --guide-soft: #effaf6;
}

:root[data-theme="dark"] {
    color-scheme: dark;
    --background-color: #111827;
    --card-bg: #1f2937;
    --text-main: #f9fafb;
    --text-secondary: #9ca3af;
    --border-color: #374151;
    --guide-color: #6ee7b7;
    --guide-soft: #142f2c;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme]) {
        color-scheme: dark;
        --background-color: #111827;
        --card-bg: #1f2937;
        --text-main: #f9fafb;
        --text-secondary: #9ca3af;
        --border-color: #374151;
        --guide-color: #6ee7b7;
        --guide-soft: #142f2c;
        --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
        --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
    }
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-family);
    background-color: var(--background-color);
    color: var(--text-main);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    padding: 20px;
}

.app-container {
    width: 100%;
    max-width: 600px;
    margin: 0 auto;
}

/* Header */
header {
    position: relative;
    margin-bottom: 32px;
    text-align: center;
}

.header-tools {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
}

.language-toggle {
    display: inline-flex;
    align-items: center;
    gap: 2px;
    height: 38px;
    padding: 3px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 999px;
    box-shadow: var(--shadow-sm);
}

.lang-btn {
    min-width: 32px;
    height: 100%;
    padding: 0 10px;
    border: none;
    border-radius: 999px;
    background: transparent;
    color: var(--text-secondary);
    font-family: inherit;
    font-size: 12px;
    font-weight: 600;
    line-height: 1;
    cursor: pointer;
    transition: background-color 0.2s, color 0.2s;
}

.lang-btn:hover:not([aria-pressed="true"]) {
    color: var(--text-main);
}

.lang-btn[aria-pressed="true"] {
    background-color: var(--line-color, var(--primary-color));
    color: var(--line-contrast-color, #ffffff);
}

.lang-btn:focus-visible,
.mode-btn:focus-visible,
#theme-toggle:focus-visible,
#refresh-btn:focus-visible {
    outline: 2px solid var(--line-color, var(--primary-color));
    outline-offset: 2px;
}

[data-theme="dark"] .lang-btn:focus-visible,
[data-theme="dark"] .mode-btn:focus-visible,
[data-theme="dark"] #theme-toggle:focus-visible,
[data-theme="dark"] #refresh-btn:focus-visible {
    outline-color: #93c5fd;
}

#theme-toggle {
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-color);
    border-radius: 50%;
    background: var(--card-bg);
    color: var(--text-secondary);
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    transition: color 0.2s, border-color 0.2s, transform 0.2s;
}

#theme-toggle:hover {
    color: var(--text-main);
    border-color: var(--text-secondary);
    transform: rotate(15deg);
}

.logo-area {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 8px;
}

h1 {
    font-size: 28px;
    font-weight: 700;
    letter-spacing: 0;
    color: var(--text-main);
}

.badge {
    background-color: var(--success-color);
    color: white;
    font-size: 11px;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 999px;
    text-transform: uppercase;
    letter-spacing: 0;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 15px;
}

/* Selection Panel */
.selection-panel {
    background: var(--card-bg);
    padding: 24px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    margin-bottom: 24px;
    border: 1px solid var(--border-color);
}

.control-group {
    margin-bottom: 20px;
}

.control-group:last-child {
    margin-bottom: 0;
}

label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.line-indicator {
    position: absolute;
    left: 16px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: var(--line-color, #e5e7eb);
    /* Default gray */
    pointer-events: none;
    transition: background-color 0.3s ease;
    z-index: 10;
}

[data-theme="dark"] .line-indicator,
[data-theme="dark"] .line-dot,
[data-theme="dark"] .direction-title::before {
    box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.35);
}

[data-theme="dark"] #refresh-btn,
[data-theme="dark"] .mode-btn[aria-pressed="true"],
[data-theme="dark"] .lang-btn[aria-pressed="true"],
[data-theme="dark"] .leg-refresh-btn,
[data-theme="dark"] .leg-line-badge,
[data-theme="dark"] .line-pill,
[data-theme="dark"] .access-symbol {
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.22);
}

[data-theme="dark"] [data-line="TML"] .train-card:not(.is-last)::before,
[data-theme="dark"] [data-line="TML"] .direction-title::before,
[data-theme="dark"] .journey-leg[data-line="TML"]::before {
    background-color: #a66a3f;
}

/* Results Area */
.results-area {
    animation: fadeIn 0.4s ease-out;
}

.last-updated {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
    font-size: 13px;
    color: var(--text-secondary);
}

#refresh-btn {
    background-color: var(--line-color, var(--primary-color));
    /* Use dynamic line color */
    border: none;
    cursor: pointer;
    color: var(--line-contrast-color, #ffffff);
    padding: 8px 16px;
    border-radius: 999px;
    /* Pill shape */
    transition: opacity 0.2s, transform 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    /* Space between icon and text */
    font-size: 14px;
    font-weight: 600;
    font-family: inherit;
    box-shadow: var(--shadow-sm);
}

#refresh-btn svg {
    width: 16px;
    height: 16px;
}

#refresh-btn:hover {
    background-color: var(--line-color, var(--primary-color));
    opacity: 0.9;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

#refresh-btn:active {
    transform: translateY(0);
}

.direction-group {
    margin-bottom: 24px;
}

.direction-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.direction-title::before {
    content: '';
    display: block;
    width: 8px;
    height: 8px;
    background-color: var(--line-color, var(--primary-color));
    border-radius: 50%;
}

.train-card {
    background: var(--card-bg);
    border-radius: var(--radius-md);
    padding: 16px;
    margin-bottom: 12px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: transform 0.2s, box-shadow 0.2s;
    position: relative;
    overflow: hidden;
}

.train-card::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background-color: var(--line-color, var(--primary-color));
}

.train-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.train-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.platform {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    background-color: #f3f4f6;
    padding: 2px 6px;
    border-radius: 4px;
    width: fit-content;
}

[data-theme="dark"] .platform {
        background-color: #374151;
        /* Darker platform badge */
        color: #e5e7eb;
        /* brighter text for contrast */
    }

.destination {
    font-size: 18px;
    font-weight: 700;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 4px 6px;
}

.train-time {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 4px;
}

.time-remaining {
    font-size: 20px;
    font-weight: 700;
    color: var(--line-text-color, var(--line-color, var(--primary-color)));
}

.train-clock {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
}

.train-time-label {
    font-size: 12px;
    font-weight: 400;
    color: var(--text-secondary);
}

:root:lang(zh) .train-clock.is-now .time-remaining,
:root:lang(zh) .train-clock.is-now .leg-train-when {
    display: none;
}

:root:lang(zh) .train-clock.is-now .train-time-label {
    font-size: 20px;
    font-weight: 700;
    color: var(--line-text-color, var(--line-color, var(--primary-color)));
}

:root:lang(zh) .leg-train .train-clock.is-now .train-time-label {
    font-size: inherit;
}

.time-absolute {
    font-size: 13px;
    font-weight: 700;
    color: #111827;
    background-color: #fde047;
    /* Bright yellow highlight */
    padding: 2px 6px;
    border-radius: 4px;
    display: inline-block;
}

[data-theme="dark"] .time-absolute {
        background-color: #ca8a04;
        /* Amber highlight for dark mode */
        color: #fff;
    }

[data-theme="dark"] .time-remaining,
[data-theme="dark"]:lang(zh) .train-clock.is-now .train-time-label {
        color: var(--warning-color);
        /* Bright Amber LED-like text for high contrast */
    }

/* Status & Delay Messages */
/* Light amber strip, matching the first/last-train service notice. */
.status-message {
    background-color: #fffbeb;
    border-left: 3px solid var(--warning-color);
    border-radius: 6px;
    padding: 10px 12px;
    margin-bottom: 12px;
}

.status-message.delay {
    border-left-color: var(--danger-color);
    background-color: #fef2f2;
}

[data-theme="dark"] .status-message {
    background-color: #422006;
    /* Dark amber */
}

[data-theme="dark"] .status-message.delay {
    background-color: #450a0a;
    /* Dark red */
}

.status-message p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.5;
}

[data-theme="dark"] .status-message p {
    color: #f3f4f6;
}

/* Message + link share one line inside the strip. */
.status-message .service-status-link {
    margin-top: 0;
}

.service-status-link {
    color: var(--primary-color);
    display: inline-block;
    font-size: 14px;
    margin-top: 8px;
    text-decoration: underline;
}

[data-theme="dark"] .service-status-link {
    color: #93c5fd;
}

/* Mode Toggle */
.mode-toggle {
    display: flex;
    gap: 8px;
    margin-bottom: 20px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 999px;
    padding: 4px;
    box-shadow: var(--shadow-sm);
}

.mode-btn {
    flex: 1;
    padding: 10px 16px;
    border: none;
    border-radius: 999px;
    background: transparent;
    color: var(--text-secondary);
    font-family: inherit;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s, color 0.2s;
}

.mode-btn[aria-pressed="true"] {
    background-color: var(--line-color, var(--primary-color));
    color: var(--line-contrast-color, #fff);
}

/* Journey Pickers */
.journey-pickers {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 12px;
    align-items: start;
}

.journey-pickers .control-group {
    margin-bottom: 0;
}

.journey-form-heading { margin-bottom: 22px; }
.journey-form-heading h2 { font-size: 20px; font-weight: 700; letter-spacing: -.4px; }
.journey-form-heading p { margin-top: 4px; font-size: 13px; color: var(--text-secondary); }
.journey-exit-label { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-top: 18px; font-size: 13px; }
.field-optional { font-size: 11px; font-weight: 400; }
.exit-picker input { cursor: pointer; text-overflow: ellipsis; }
.exit-picker .suggestion-name { white-space: normal; overflow-wrap: anywhere; line-height: 1.4; text-align: left; }
.journey-exit-help {
    display: flex;
    flex-wrap: wrap;
    gap: 4px 10px;
    min-height: 34px;
    margin-top: 7px;
    font-size: 12px;
    line-height: 1.4;
    color: var(--text-secondary);
}
.journey-exit-help a { color: var(--primary-color); }
[data-theme="dark"] .journey-exit-help a { color: #93c5fd; }
.journey-exit-help a:focus-visible { outline: 2px solid currentColor; outline-offset: 2px; }
.journey-station-notice { font-size: 13px; }
.journey-station-notice h3 { font-size: 14px; }
.journey-station-notice p { margin-top: 6px; }
.journey-station-notice a { display: inline-block; margin-top: 8px; color: var(--text-main); text-underline-offset: 3px; }
[data-theme="dark"] .journey-station-notice a { color: #93c5fd; }
.journey-station-notice a:focus-visible { outline: 2px solid currentColor; outline-offset: 2px; }
.journey-exit-disclaimer { display: flex; gap: 7px; margin: 14px 0 0; padding-top: 14px; border-top: 1px solid var(--border-color); font-size: 12px; line-height: 1.5; color: var(--text-secondary); }
.journey-exit-disclaimer > span { flex: 0 0 auto; }

/* Station access and connections share a compact walking-time treatment. */
.journey-access-card, .journey-transfer { display: flex; align-items: center; gap: 12px; padding: 15px 16px; margin: 12px 0; border: 1px solid var(--border-color); border-radius: 12px; background: var(--card-bg); }
.access-symbol, .transfer-symbol { display: flex; align-items: center; justify-content: center; flex: 0 0 34px; width: 34px; height: 34px; border-radius: 10px; background: var(--guide-soft); color: var(--guide-color); font-size: 10px; font-weight: 700; letter-spacing: .03em; }
.access-symbol { background: var(--access-color, var(--border-color)); color: var(--access-ink, var(--text-main)); }
.transfer-symbol { font-size: 22px; background: var(--background-color); color: var(--text-secondary); }
.access-copy, .transfer-copy { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 3px; font-size: 13px; }
.access-copy > .journey-access-choice { font-weight: 600; }
.access-connection-note { color: var(--text-main); font-size: 12px; font-weight: 500; }
.access-scope-note { color: var(--text-secondary); font-size: 11px; line-height: 1.4; }
.access-estimate-note, .transfer-copy > span:last-child { color: var(--text-secondary); font-size: 11px; }
.walking-time { flex: 0 0 auto; text-align: right; font-size: 18px; font-weight: 700; line-height: 1.2; font-variant-numeric: tabular-nums; }
.walking-time small { display: block; font-weight: 400; font-size: 10px; color: var(--text-secondary); margin-top: 4px; }
.journey-eyebrow { font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; color: var(--text-secondary); }
.transfer-copy strong { font-size: 13px; font-weight: 600; }
.journey-transfer { margin: 14px 0 4px; border-style: dashed; }

.timing-details summary:focus-visible { outline: 2px solid var(--guide-color); outline-offset: 3px; }
.timing-details { margin-top: 12px; padding-top: 10px; font-size: 11px; color: var(--text-secondary); }
.timing-details summary { width: fit-content; cursor: pointer; font-weight: 600; padding: 4px 0; }
.timing-details p { line-height: 1.6; margin-top: 6px; }

@media (max-width: 480px) {
    .journey-form-heading h2 { font-size: 18px; }
    .journey-access-card, .journey-transfer { gap: 9px; padding: 13px 12px; }
    .access-symbol, .transfer-symbol { flex-basis: 28px; width: 28px; height: 32px; }
    .walking-time { font-size: 16px; }
}

#journey-swap {
    align-self: start;
    margin-top: 30px;
    width: 44px;
    height: 44px;
    border: 1px solid var(--border-color);
    border-radius: 50%;
    background: var(--card-bg);
    color: var(--text-secondary);
    font-size: 18px;
    cursor: pointer;
    transition: color 0.2s, border-color 0.2s, transform 0.2s;
}

#journey-swap:hover {
    color: var(--line-text-color, var(--line-color, var(--primary-color)));
    border-color: var(--line-text-color, var(--line-color, var(--primary-color)));
    transform: rotate(180deg);
}

[data-theme="dark"] #journey-swap:hover {
    color: var(--text-main);
    border-color: var(--text-secondary);
    background-color: #374151;
}

.station-picker {
    position: relative;
}

.station-picker::after {
    content: '';
    position: absolute;
    right: 14px;
    top: 50%;
    width: 7px;
    height: 7px;
    border-right: 2px solid var(--text-secondary);
    border-bottom: 2px solid var(--text-secondary);
    transform: translateY(-65%) rotate(45deg);
    pointer-events: none;
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.station-picker:has(input[aria-expanded="true"])::after {
    transform: translateY(-30%) rotate(-135deg);
}

.station-picker:has(input:disabled)::after {
    opacity: 0.4;
}

.station-picker input {
    width: 100%;
    border: 1px solid var(--border-color);
    background-color: #fff;
    padding: 12px 36px 12px 16px;
    border-radius: 10px;
    font-size: 16px;
    color: var(--text-main);
    font-family: inherit;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.station-picker input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 114, 188, 0.1);
}

[data-theme="dark"] .station-picker input {
        background-color: #374151;
        color: #f9fafb;
        border-color: #4b5563;
    }

/* Line picker carries the line-colour dot; pad the input to clear it. */
.station-picker.has-indicator input {
    padding-left: 38px;
}

.station-picker .line-indicator {
    top: 50%;
    transform: translateY(-50%);
}

.station-picker input[readonly]:not(:disabled) {
    cursor: pointer;
}

.station-picker input:disabled {
    background-color: #f9fafb;
    cursor: not-allowed;
    opacity: 0.6;
}

[data-theme="dark"] .station-picker input:disabled {
    background-color: #2b323c;
}

.suggestions {
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    right: 0;
    z-index: 30;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    box-shadow: var(--shadow-md);
    overflow: hidden;
    max-height: 320px;
    overflow-y: auto;
}

.suggestion {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
    padding: 10px 14px;
    border: none;
    background: transparent;
    color: var(--text-main);
    font-family: inherit;
    font-size: 15px;
    text-align: left;
    cursor: pointer;
}

.suggestion:hover,
.suggestion:focus,
.suggestion.active {
    background-color: rgba(0, 114, 188, 0.08);
}

.suggestion-name {
    flex: 1;
}

.suggestion-code {
    font-size: 12px;
    color: var(--text-secondary);
}

.line-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
    display: inline-block;
}

/* Small section label inside the picker ("Choose a line", current line name). */
.sugg-hint {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px 4px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-secondary);
}

.suggestion.line-row .suggestion-name {
    font-weight: 600;
}

.suggestion.back-row {
    color: var(--text-secondary);
    font-weight: 600;
}

.suggestion.search-trigger-row {
    border-bottom: 1px solid var(--border-color);
    background-color: rgba(0, 114, 188, 0.04);
    padding: 9px 14px;
}

.suggestion.search-trigger-row .search-trigger-icon {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
    color: var(--primary-color);
}

.suggestion.search-trigger-row .suggestion-name {
    font-size: 13px;
    font-weight: 600;
    color: var(--primary-color);
}

.suggestion.search-trigger-row .search-trigger-badge {
    font-size: 11px;
    font-weight: 500;
    padding: 2px 7px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    background: var(--card-bg);
    color: var(--text-secondary);
    white-space: nowrap;
}

.suggestion.search-mode-bar {
    justify-content: space-between;
    border-bottom: 1px solid var(--border-color);
    background-color: rgba(0, 114, 188, 0.04);
    padding: 8px 14px;
    font-size: 12px;
}

.suggestion.search-mode-bar .search-mode-hint {
    color: var(--text-secondary);
    font-weight: 500;
}

.suggestion.search-mode-bar .search-mode-link {
    color: var(--primary-color);
    font-weight: 600;
    text-decoration: underline;
    text-underline-offset: 2px;
    white-space: nowrap;
}

[data-theme="dark"] .suggestion.search-trigger-row,
[data-theme="dark"] .suggestion.search-mode-bar {
    background-color: rgba(147, 197, 253, 0.06);
}

[data-theme="dark"] .suggestion.search-trigger-row .search-trigger-icon,
[data-theme="dark"] .suggestion.search-trigger-row .suggestion-name,
[data-theme="dark"] .suggestion.search-mode-bar .search-mode-link {
    color: #93c5fd;
}

.sugg-empty {
    padding: 14px;
    font-size: 13px;
    color: var(--text-secondary);
    text-align: center;
}

/* Journey Results */
.journey-summary-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    padding: 16px 20px;
    margin-bottom: 16px;
}

.journey-summary-route {
    font-size: 18px;
    font-weight: 700;
}

.journey-summary-meta {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 2px;
}

.journey-deadlines {
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 8px;
    padding-top: 8px;
    border-top: 1px solid var(--border-color);
}

.journey-deadlines.muted {
    font-style: italic;
    opacity: 0.8;
}

.journey-trainline {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.9;
    border-radius: 8px;
}

.journey-trainline strong {
    color: var(--text-main);
    font-weight: 700;
}

.journey-trainline.clickable {
    cursor: pointer;
    margin: 4px -8px;
    padding: 4px 10px;
    border: 1px solid transparent;
    transition: background-color 0.15s, border-color 0.15s;
}

.journey-trainline.clickable:hover,
.journey-trainline.clickable:focus-visible {
    background-color: rgba(0, 114, 188, 0.08);
    border-color: rgba(0, 114, 188, 0.25);
    outline: none;
}

.journey-trainline.active {
    background-color: rgba(0, 114, 188, 0.14);
    border-color: var(--line-color, var(--primary-color));
}

[data-theme="dark"] .journey-trainline.clickable:hover,
[data-theme="dark"] .journey-trainline.clickable:focus-visible {
    background-color: rgba(147, 197, 253, 0.1);
    border-color: rgba(147, 197, 253, 0.3);
}

[data-theme="dark"] .journey-trainline.active {
    background-color: rgba(147, 197, 253, 0.16);
    border-color: #93c5fd;
}

.trainline-go {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 18px;
    height: 18px;
    margin-left: 4px;
    border-radius: 999px;
    background-color: rgba(0, 114, 188, 0.1);
    color: var(--primary-color);
    font-weight: 700;
    line-height: 1;
    vertical-align: middle;
}

[data-theme="dark"] .trainline-go {
    background-color: rgba(147, 197, 253, 0.15);
    color: #93c5fd;
}

.route-back {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    margin-bottom: 12px;
    padding: 6px 12px;
    border: 1px solid var(--border-color);
    border-radius: 999px;
    background: var(--card-bg);
    color: var(--text-secondary);
    font-family: inherit;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: color 0.2s, border-color 0.2s;
}

.route-back:hover {
    color: var(--text-main);
    border-color: var(--text-secondary);
}

.line-pill {
    display: inline-block;
    padding: 1px 9px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 600;
    line-height: 1.5;
    white-space: nowrap;
    vertical-align: middle;
}

.journey-safety {
    font-size: 11px;
    color: var(--text-secondary);
    margin-top: 8px;
    opacity: 0.85;
    line-height: 1.4;
}

.journey-service-ended {
    font-size: 13px;
    color: var(--text-main);
    background-color: #fffbeb;
    border-left: 3px solid var(--warning-color);
    border-radius: 6px;
    padding: 8px 12px;
    margin-top: 8px;
}

[data-theme="dark"] .journey-service-ended {
    background-color: #422006;
}

/* Final-call urgency: the last train of the night is minutes away. */
.journey-service-ended.urgent {
    font-weight: 600;
    background-color: #fef2f2;
    border-left-color: var(--danger-color);
}

[data-theme="dark"] .journey-service-ended.urgent {
    background-color: #450a0a;
}

/* Auto-promote notice (suggested route can no longer reach the destination). */
.journey-promoted {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-main);
    background-color: #fffbeb;
    border-left: 3px solid var(--warning-color);
    border-radius: 6px;
    padding: 10px 12px;
    margin-bottom: 12px;
}

[data-theme="dark"] .journey-promoted {
    background-color: #422006;
}

/* After last train: no serviceable route. */
.journey-noroute {
    font-size: 14px;
    color: var(--text-secondary);
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    text-align: center;
}

/* "Last train" / "First train" badge on a live arrival. */
.train-badge {
    display: inline-block;
    padding: 1px 7px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 700;
    vertical-align: middle;
    white-space: nowrap;
    background-color: var(--danger-color);
    color: #ffffff;
}

.train-badge.first {
    background-color: var(--success-color);
}

.leg-train.is-last {
    background-color: rgba(239, 68, 68, 0.06);
    border-radius: 6px;
}

/* Single Station: highlight the card carrying a last-train badge. */
.train-card.is-last::before {
    background-color: var(--danger-color);
}

.journey-error {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-left: 4px solid var(--danger-color);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    color: var(--text-main);
    font-size: 14px;
}

.journey-leg {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    padding: 16px;
    margin-bottom: 0;
    position: relative;
    overflow: hidden;
}

.journey-leg::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background-color: var(--line-color, var(--primary-color));
}

.leg-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 4px;
}

.leg-header .leg-meta {
    margin-left: auto;
}

.leg-refresh-btn {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 6px 12px;
    border: none;
    border-radius: 999px;
    background-color: var(--line-color, var(--primary-color));
    color: var(--line-contrast-color, #ffffff);
    font-family: inherit;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    transition: opacity 0.2s, transform 0.2s;
}

.leg-refresh-btn svg {
    width: 13px;
    height: 13px;
}

.leg-refresh-btn:hover:not(:disabled) {
    opacity: 0.9;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.leg-refresh-btn:disabled {
    opacity: 0.35;
    cursor: default;
}

.leg-placeholder {
    font-size: 13px;
    color: var(--text-secondary);
    font-style: italic;
    padding: 6px 0;
}

.leg-updated {
    font-size: 11px;
    color: var(--text-secondary);
    margin-top: 6px;
}

.leg-line-badge {
    background-color: var(--line-color, var(--primary-color));
    color: var(--line-contrast-color, #fff);
    font-size: 12px;
    font-weight: 700;
    padding: 3px 10px;
    border-radius: 999px;
    white-space: nowrap;
}

.leg-meta {
    font-size: 12px;
    color: var(--text-secondary);
}

.leg-route {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 10px;
}

.leg-train {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    border-top: 1px solid var(--border-color);
    font-size: 14px;
}

.leg-train-dest {
    flex: 1;
    font-weight: 500;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 4px 6px;
}

.leg-train-plat {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    background-color: #f3f4f6;
    padding: 2px 6px;
    border-radius: 4px;
}

[data-theme="dark"] .leg-train-plat {
        background-color: #374151;
        color: #e5e7eb;
    }

.leg-train-when {
    font-weight: 700;
    color: var(--line-text-color, var(--line-color, var(--primary-color)));
}

[data-theme="dark"] .leg-train-when {
        color: var(--warning-color);
    }

.leg-train-time {
    font-size: 12px;
    font-weight: 700;
    color: #111827;
    background-color: #fde047;
    padding: 2px 6px;
    border-radius: 4px;
}

[data-theme="dark"] .leg-train-time {
        background-color: #ca8a04;
        color: #fff;
    }

.leg-loading {
    font-size: 13px;
    color: var(--text-secondary);
    padding: 6px 0;
}

.leg-note {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 8px;
    font-style: italic;
}

/* Service-update card sits inside a leg: drop the standalone bottom margin. */
.leg-trains .status-message {
    margin-bottom: 0;
}

.leg-wait {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    line-height: 1.5;
    padding: 8px 0 10px 44px;
    position: relative;
}

.leg-wait::before {
    content: '';
    position: absolute;
    left: 32px;
    top: 0;
    bottom: 0;
    border-left: 2px dotted var(--text-secondary);
    opacity: 0.55;
}

/* Exit-to-exit totals summary at the foot of each route card. */
.route-totals {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--border-color);
}

.route-total-row {
    display: flex;
    justify-content: space-between;
    gap: 8px;
    font-size: 13px;
    color: var(--text-secondary);
    padding: 3px 0;
}

.route-total-row > span:last-child { white-space: nowrap; }

.route-total-row.grand {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-main);
    margin-top: 4px;
    padding-block: 8px;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

#journey-alternative {
    margin-top: 16px;
}

/* Collapsible route blocks (suggested + alternative share the same look) */
.route-details {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    padding: 0;
}

.route-details summary {
    cursor: pointer;
    padding: 14px 20px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
}

.route-details summary:hover {
    color: var(--text-main);
}

.route-details[open] > summary {
    color: var(--text-main);
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 12px;
}

.route-body {
    padding: 0 16px 16px;
}

/* Loading & Error */
.loading-state,
.error-state {
    text-align: center;
    padding: 40px 0;
    color: var(--text-secondary);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid #e5e7eb;
    border-top-color: var(--primary-color);
    border-radius: 50%;
    margin: 0 auto 16px;
    animation: spin 1s linear infinite;
}

.error-icon {
    width: 48px;
    height: 48px;
    background-color: #fee2e2;
    color: var(--danger-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 700;
    margin: 0 auto 16px;
}

.hidden {
    display: none;
}

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

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

footer {
    text-align: center;
    margin-top: 40px;
    color: #9ca3af;
    font-size: 12px;
}

footer p {
    margin-bottom: 4px;
}

footer .copyright {
    margin-top: 8px;
    opacity: 0.8;
}

/* Mobile adjustments */
@media (max-width: 480px) {
    body {
        padding: 12px;
        align-items: flex-start;
    }

    .app-container {
        padding: 0;
    }

    /* Slimmer header so it doesn't dominate a short phone screen. */
    header {
        margin-bottom: 22px;
    }

    h1 {
        font-size: 23px;
    }

    .subtitle {
        font-size: 13px;
    }

    /* Reclaim horizontal space: cards carried desktop-sized padding. */
    .selection-panel {
        padding: 16px;
    }

    .journey-summary-card {
        padding: 14px 16px;
    }

    .route-details summary {
        padding: 12px 16px;
    }

    .route-body {
        padding: 0 12px 14px;
    }

    .journey-pickers {
        grid-template-columns: 1fr;
    }

    #journey-swap {
        margin-top: 0;
        justify-self: center;
        transform: rotate(90deg);
    }

    #journey-swap:hover {
        transform: rotate(270deg);
    }

    /* When the route title wraps, keep the Refresh button on the top line. */
    .leg-route {
        align-items: flex-start;
        font-size: 15px;
    }

    .train-card {
        padding: 12px;
    }

    .destination {
        font-size: 16px;
    }

    .time-remaining,
    :root:lang(zh) .train-time .train-clock.is-now .train-time-label {
        font-size: 18px;
    }

    .leg-train.has-time-type {
        flex-wrap: wrap;
    }

    .leg-wait {
        padding-left: 36px;
    }

    .leg-wait::before {
        left: 25px;
    }
}

/* Mini phones (iPhone 12/13 mini, ~360-375px) — tighten one more notch. */
@media (max-width: 380px) {
    body {
        padding: 10px;
    }

    h1 {
        font-size: 21px;
    }

    .logo-area {
        gap: 8px;
    }

    .selection-panel {
        padding: 14px;
    }

    .leg-refresh-btn {
        padding: 5px 10px;
        font-size: 11px;
    }

    .leg-train {
        gap: 8px;
        font-size: 13px;
    }

    .leg-line-badge,
    .leg-train-plat,
    .leg-train-time {
        font-size: 11px;
    }
}