/*
 * British Rail Poster Style (1930s-50s)
 *
 * Colour Palette:
 * - Cream (background): #F5F0E1
 * - Forest Green (primary): #2D5A47
 * - Mustard (accent): #D4A03C
 * - Burgundy (highlight): #8B2942
 * - Charcoal (text): #2C2C2C
 * - Warm Grey: #6B6560
 *
 * Typography: Johnston/Gill Sans style
 */

/* ========================================
   CSS RESET & BASE
   ======================================== */

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

:root {
    --cream: #F5F0E1;
    --cream-dark: #E8E0CC;
    --forest-green: #2D5A47;
    --forest-green-dark: #1E3D30;
    --mustard: #D4A03C;
    --mustard-light: #E6B84D;
    --burgundy: #8B2942;
    --burgundy-light: #A33350;
    --charcoal: #2C2C2C;
    --warm-grey: #6B6560;
    --warm-grey-light: #9A9590;

    --font-display: "Gill Sans", "Gill Sans MT", "Trebuchet MS", sans-serif;
    --font-body: "Gill Sans", "Gill Sans MT", "Trebuchet MS", sans-serif;

    --shadow-sm: 0 2px 4px rgba(44, 44, 44, 0.1);
    --shadow-md: 0 4px 12px rgba(44, 44, 44, 0.15);
    --shadow-lg: 0 8px 24px rgba(44, 44, 44, 0.2);
}

html {
    font-size: 18px;
    line-height: 1.6;
}

body {
    font-family: var(--font-body);
    background-color: var(--cream);
    color: var(--charcoal);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ========================================
   TYPOGRAPHY
   ======================================== */

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 600;
    line-height: 1.2;
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

h2 {
    font-size: 1.75rem;
    margin-bottom: 0.75rem;
}

h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

p {
    margin-bottom: 1rem;
}

a {
    color: var(--forest-green);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: var(--burgundy);
}

/* ========================================
   HEADER
   ======================================== */

.site-header {
    background-color: var(--forest-green);
    color: var(--cream);
    padding: 1rem 2rem;
    box-shadow: var(--shadow-md);
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo a {
    color: var(--cream);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-mark {
    /* Placeholder for stylised train silhouette */
    width: 48px;
    height: 32px;
    background: var(--mustard);
    clip-path: polygon(0% 50%, 15% 20%, 85% 20%, 100% 50%, 85% 80%, 15% 80%);
}

.logo-text {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.main-nav {
    display: flex;
    gap: 2rem;
}

.main-nav a {
    color: var(--cream);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0.5rem 0;
    border-bottom: 2px solid transparent;
    transition: border-color 0.2s ease;
}

.main-nav a:hover {
    color: var(--mustard);
    border-bottom-color: var(--mustard);
}

/* ========================================
   MAIN CONTENT
   ======================================== */

.main-content {
    flex: 1;
    padding: 2rem;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

/* ========================================
   FOOTER
   ======================================== */

.site-footer {
    background-color: var(--forest-green-dark);
    color: var(--cream);
    padding: 2rem;
    text-align: center;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
}

.tagline {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-style: italic;
    margin-bottom: 0.5rem;
    color: var(--mustard);
}

.attribution {
    font-size: 0.875rem;
    color: var(--warm-grey-light);
    margin-bottom: 0;
}

/* ========================================
   HERO SECTION (Index Page)
   ======================================== */

.hero {
    text-align: center;
    padding: 3rem 1rem;
    position: relative;
}

.hero::before {
    /* Decorative geometric background element */
    content: "";
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 200px;
    height: 200px;
    background: var(--mustard);
    opacity: 0.15;
    border-radius: 50%;
    z-index: -1;
}

.hero h1 {
    color: var(--forest-green);
    margin-bottom: 0.5rem;
}

.hero .subtitle {
    font-size: 1.125rem;
    color: var(--warm-grey);
    font-style: italic;
    margin-bottom: 2rem;
}

/* Decorative poster-style banner */
.poster-banner {
    background: var(--burgundy);
    color: var(--cream);
    padding: 1rem 2rem;
    margin: 2rem auto;
    max-width: 600px;
    text-align: center;
    transform: rotate(-1deg);
    box-shadow: var(--shadow-md);
}

.poster-banner p {
    font-family: var(--font-display);
    font-size: 1.125rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin: 0;
}

/* ========================================
   SEARCH FORM
   ======================================== */

.search-panel {
    background: white;
    border: 3px solid var(--forest-green);
    padding: 2rem;
    max-width: 700px;
    margin: 0 auto;
    box-shadow: var(--shadow-lg);
}

.search-panel h2 {
    color: var(--forest-green);
    text-align: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--cream-dark);
}

/* Mode Toggle (Tab-style selector) */
.mode-toggle {
    display: flex;
    margin-bottom: 1.5rem;
    border-bottom: 2px solid var(--cream-dark);
}

.mode-toggle-btn {
    flex: 1;
    padding: 0.875rem 1rem;
    font-family: var(--font-display);
    font-size: 0.9375rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border: none;
    background: var(--cream);
    color: var(--warm-grey);
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
}

.mode-toggle-btn:hover {
    color: var(--forest-green);
    background: var(--cream-dark);
}

.mode-toggle-btn.active {
    color: var(--forest-green);
    background: white;
}

.mode-toggle-btn.active::after {
    content: "";
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--forest-green);
}

.search-mode {
    display: none;
}

.search-mode.active {
    display: block;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

label {
    display: block;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
    color: var(--forest-green);
}

input[type="text"],
input[type="time"],
select {
    width: 100%;
    padding: 0.75rem 1rem;
    font-family: var(--font-body);
    font-size: 1rem;
    border: 2px solid var(--cream-dark);
    background: var(--cream);
    color: var(--charcoal);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

input[type="text"]:focus,
input[type="time"]:focus,
select:focus {
    outline: none;
    border-color: var(--mustard);
    box-shadow: 0 0 0 3px rgba(212, 160, 60, 0.2);
}

input[type="text"]::placeholder {
    color: var(--warm-grey-light);
}

.hint {
    font-size: 0.8125rem;
    color: var(--warm-grey);
    margin-top: 0.5rem;
    font-style: italic;
}

/* ========================================
   AUTOCOMPLETE DROPDOWN
   ======================================== */

.autocomplete-wrapper {
    position: relative;
}

.autocomplete-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    border: 2px solid var(--forest-green);
    border-top: none;
    max-height: 280px;
    overflow-y: auto;
    z-index: 1000;
    box-shadow: var(--shadow-md);
}

.autocomplete-dropdown:empty {
    display: none;
}

.autocomplete-item {
    padding: 0.75rem 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    border-bottom: 1px solid var(--cream-dark);
}

.autocomplete-item:last-child {
    border-bottom: none;
}

.autocomplete-item:hover,
.autocomplete-item.selected {
    background: var(--cream);
}

.autocomplete-item.selected {
    background: var(--cream-dark);
}

.autocomplete-crs {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    color: var(--forest-green);
}

.autocomplete-station-name {
    color: var(--warm-grey);
    font-size: 0.875rem;
}

.autocomplete-item.selected .autocomplete-crs,
.autocomplete-item:hover .autocomplete-crs {
    color: var(--charcoal);
}

/* ========================================
   BUTTONS
   ======================================== */

.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: center;
}

.btn-primary {
    background: var(--forest-green);
    color: var(--cream);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    background: var(--forest-green-dark);
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--mustard);
    color: var(--charcoal);
}

.btn-secondary:hover {
    background: var(--mustard-light);
}

.btn-danger {
    background: var(--burgundy);
    color: var(--cream);
}

.btn-danger:hover {
    background: var(--burgundy-light);
}

.btn-block {
    display: block;
    width: 100%;
}

/* ========================================
   SERVICE LIST (Search Results)
   ======================================== */

.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 3px solid var(--forest-green);
}

.results-header h2 {
    margin-bottom: 0;
}

.results-count {
    color: var(--warm-grey);
    font-size: 0.9375rem;
}

.service-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.service-card {
    background: white;
    border: 2px solid var(--cream-dark);
    padding: 1.5rem;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.service-card:hover {
    border-color: var(--forest-green);
    box-shadow: var(--shadow-md);
}

.service-card.cancelled {
    opacity: 0.7;
    border-color: var(--burgundy);
}

.service-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.service-identity {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.service-time {
    font-size: 1.75rem;
    font-weight: 700;
    font-family: var(--font-display);
    color: var(--forest-green);
}

.service-time.delayed {
    color: var(--burgundy);
}

.service-time .original {
    font-size: 1rem;
    text-decoration: line-through;
    color: var(--warm-grey);
    margin-left: 0.5rem;
}

.headcode {
    background: var(--forest-green);
    color: var(--cream);
    padding: 0.25rem 0.5rem;
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.05em;
}

.service-destination {
    flex: 1;
    margin-left: 1rem;
}

.service-destination h3 {
    margin-bottom: 0.25rem;
    text-transform: none;
    letter-spacing: 0;
}

.service-operator {
    font-size: 0.875rem;
    color: var(--warm-grey);
}

.service-terminus {
    display: block;
    font-size: 0.875rem;
    color: var(--warm-grey);
}

.terminus-time {
    font-weight: 600;
    color: var(--dark);
}

.terminus-time.delayed {
    color: var(--delay-red);
}

.terminus-time .original {
    font-weight: 400;
    font-size: 0.8em;
    color: var(--warm-grey);
    text-decoration: line-through;
}

.service-platform {
    text-align: right;
}

.platform-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--warm-grey);
}

.platform-number {
    font-size: 1.5rem;
    font-weight: 700;
    font-family: var(--font-display);
    color: var(--mustard);
}

.service-status {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: 2px;
}

.service-status.on-time {
    background: var(--forest-green);
    color: var(--cream);
}

.service-status.delayed {
    background: var(--mustard);
    color: var(--charcoal);
}

.service-status.cancelled {
    background: var(--burgundy);
    color: var(--cream);
}

/* Calling Points */
.calling-points {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--cream-dark);
}

.calling-points-toggle {
    background: none;
    border: none;
    color: var(--forest-green);
    font-family: var(--font-body);
    font-size: 0.875rem;
    cursor: pointer;
    padding: 0.5rem 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.calling-points-toggle:hover {
    color: var(--burgundy);
}

.calling-points-toggle .arrow {
    transition: transform 0.2s ease;
}

.calling-points-toggle.expanded .arrow {
    transform: rotate(90deg);
}

.calling-points-list {
    display: none;
    margin-top: 1rem;
    padding-left: 1rem;
    border-left: 3px solid var(--mustard);
}

.calling-points-list.visible {
    display: block;
}

.calling-point {
    display: grid;
    grid-template-columns: 80px 1fr auto;
    gap: 1rem;
    padding: 0.5rem 0;
    align-items: center;
    border-bottom: 1px dashed var(--cream-dark);
}

.calling-point:last-child {
    border-bottom: none;
}

.calling-point.current {
    background: rgba(212, 160, 60, 0.15);
    margin: 0 -1rem;
    padding: 0.5rem 1rem;
}

.calling-point.cancelled {
    opacity: 0.5;
    text-decoration: line-through;
}

.calling-point-time {
    font-family: var(--font-display);
    font-weight: 600;
}

.calling-point-time .delayed {
    color: var(--burgundy);
    font-size: 0.875rem;
}

.calling-point-name {
    font-weight: 500;
}

.calling-point-platform {
    font-size: 0.875rem;
    color: var(--warm-grey);
}

.select-position-btn {
    font-size: 0.75rem;
    padding: 0.375rem 0.75rem;
}

/* Confirm train button row (for identify mode) */
.confirm-train-row {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--cream-dark);
}

.confirm-train-row .btn {
    width: 100%;
}

/* ========================================
   JOURNEY RESULTS
   ======================================== */

.journey-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.journey-card {
    background: white;
    border: 2px solid var(--cream-dark);
    overflow: hidden;
}

.journey-card:hover {
    border-color: var(--forest-green);
    box-shadow: var(--shadow-md);
}

.journey-summary {
    display: grid;
    grid-template-columns: 1fr auto 1fr auto;
    gap: 1rem;
    align-items: center;
    padding: 1.5rem;
    background: linear-gradient(135deg, var(--cream) 0%, white 100%);
    border-bottom: 2px solid var(--cream-dark);
}

.journey-time {
    text-align: center;
}

.journey-time .time {
    font-size: 1.5rem;
    font-weight: 700;
    font-family: var(--font-display);
    color: var(--forest-green);
}

.journey-time .label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--warm-grey);
}

.journey-arrow {
    /* Stylised arrow/line representing the journey */
    width: 60px;
    height: 4px;
    background: var(--mustard);
    position: relative;
}

.journey-arrow::after {
    content: "";
    position: absolute;
    right: 0;
    top: -4px;
    border: 6px solid transparent;
    border-left: 8px solid var(--mustard);
}

.journey-meta {
    text-align: right;
}

.journey-duration {
    font-size: 1.25rem;
    font-weight: 600;
    font-family: var(--font-display);
    color: var(--charcoal);
}

.journey-changes {
    font-size: 0.875rem;
    color: var(--warm-grey);
}

.journey-changes.direct {
    color: var(--forest-green);
    font-weight: 600;
}

/* Journey Segments (Route Map Style) */
.journey-segments {
    padding: 1.5rem;
}

.segment {
    position: relative;
    padding-left: 2rem;
    padding-bottom: 1.5rem;
}

.segment:last-child {
    padding-bottom: 0;
}

/* Vertical route line */
.segment::before {
    content: "";
    position: absolute;
    left: 8px;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--forest-green);
}

.segment:last-child::before {
    bottom: auto;
    height: 20px;
}

/* Station dot */
.segment-station {
    position: relative;
    margin-bottom: 0.75rem;
}

.segment-station::before {
    content: "";
    position: absolute;
    left: -2rem;
    top: 4px;
    width: 16px;
    height: 16px;
    background: var(--cream);
    border: 4px solid var(--forest-green);
    border-radius: 50%;
}

.segment-station.origin::before {
    background: var(--forest-green);
}

.segment-station.destination::before {
    background: var(--burgundy);
    border-color: var(--burgundy);
}

.station-info {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
}

.station-name {
    font-weight: 600;
    font-size: 1.0625rem;
}

.station-time {
    font-family: var(--font-display);
    font-weight: 600;
    color: var(--forest-green);
}

.station-platform {
    font-size: 0.8125rem;
    color: var(--warm-grey);
}

.station-action {
    font-size: 0.8125rem;
    color: var(--warm-grey);
    font-style: italic;
}

/* Train segment details */
.segment-train {
    background: var(--cream);
    padding: 0.75rem 1rem;
    margin: 0.5rem 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.segment-train .operator {
    font-weight: 600;
    color: var(--forest-green);
}

.segment-train .headcode {
    margin-left: 0.5rem;
}

.segment-train .stops {
    font-size: 0.875rem;
    color: var(--warm-grey);
}

/* Walk segment */
.segment.walk::before {
    background: repeating-linear-gradient(
        to bottom,
        var(--mustard) 0,
        var(--mustard) 4px,
        transparent 4px,
        transparent 8px
    );
}

.segment-walk {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 0;
    color: var(--warm-grey);
    font-style: italic;
}

.walk-icon {
    /* Walking person icon placeholder */
    width: 20px;
    height: 20px;
    background: var(--mustard);
    border-radius: 50%;
}

/* ========================================
   ERROR PAGE
   ======================================== */

.error-page {
    text-align: center;
    padding: 4rem 2rem;
}

.error-page h1 {
    color: var(--burgundy);
    margin-bottom: 1rem;
}

.error-message {
    background: rgba(139, 41, 66, 0.1);
    border: 2px solid var(--burgundy);
    padding: 1.5rem;
    max-width: 500px;
    margin: 0 auto 2rem;
}

/* ========================================
   LOADING STATE
   ======================================== */

.loading {
    text-align: center;
    padding: 3rem;
}

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--cream-dark);
    border-top-color: var(--forest-green);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

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

.loading-text {
    color: var(--warm-grey);
    font-style: italic;
}

/* ========================================
   MODAL
   ======================================== */

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(44, 44, 44, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}

.modal-overlay[hidden] {
    display: none;
}

.modal-content {
    background: white;
    border: 3px solid var(--forest-green);
    padding: 2rem;
    max-width: 450px;
    width: 90%;
    box-shadow: var(--shadow-lg);
}

.modal-content h3 {
    color: var(--forest-green);
    text-align: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--cream-dark);
}

.modal-actions {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

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

/* ========================================
   DECORATIVE ELEMENTS
   ======================================== */

/* Poster-style illustration */
.illustration-placeholder {
    width: 100%;
    max-width: 400px;
    margin: 2rem auto;
}

.illustration-placeholder img {
    width: 100%;
    height: auto;
    display: block;
}

/* Geometric accents */
.geo-accent {
    position: absolute;
    width: 100px;
    height: 100px;
    background: var(--mustard);
    opacity: 0.1;
}

.geo-accent.circle {
    border-radius: 50%;
}

.geo-accent.diamond {
    transform: rotate(45deg);
}

/* ========================================
   EMPTY STATE
   ======================================== */

.empty-state {
    text-align: center;
    padding: 3rem;
    color: var(--warm-grey);
}

.empty-state h3 {
    color: var(--charcoal);
    margin-bottom: 0.5rem;
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */

@media (max-width: 768px) {
    html {
        font-size: 16px;
    }

    .header-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }

    .main-nav {
        gap: 1rem;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .journey-summary {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 0.75rem;
    }

    .journey-arrow {
        width: 40px;
        margin: 0 auto;
        transform: rotate(90deg);
    }

    .journey-meta {
        text-align: center;
    }

    .service-header {
        flex-direction: column;
        gap: 1rem;
    }

    .service-platform {
        text-align: left;
    }

    .calling-point {
        grid-template-columns: 60px 1fr;
    }

    .select-position-btn {
        grid-column: span 2;
    }
}

@media (max-width: 480px) {
    .main-content {
        padding: 1rem;
    }

    .search-panel {
        padding: 1.25rem;
    }

    h1 {
        font-size: 1.75rem;
    }

    h2 {
        font-size: 1.375rem;
    }
}

/* ========================================
   PRINT STYLES
   ======================================== */

@media print {
    .site-header,
    .site-footer,
    .btn,
    .calling-points-toggle {
        display: none;
    }

    body {
        background: white;
    }

    .journey-card,
    .service-card {
        border: 1px solid #ccc;
        break-inside: avoid;
    }
}