/* Sky & Berry Modern Access CSS */

@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400;500;700&family=Outfit:wght@500;700;800&display=swap');

:root {
    /* Theme Colors */
    --fs-sky-light: #e3f2fd;
    --fs-sky-main: #bbdefb;
    --fs-sky-dark: #64b5f6;
    --fs-berry: #ff4081;
    --fs-berry-dark: #c51162;
    --fs-text-main: #263238;
    --fs-text-sub: #546e7a;
    --fs-white: #ffffff;

    /* UI Variables */
    --fs-radius-lg: 24px;
    --fs-radius-md: 16px;
    --fs-shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.04);
    --fs-shadow-card: 0 10px 40px -10px rgba(0, 87, 155, 0.08);
    --fs-glass-bg: rgba(255, 255, 255, 0.7);
    --fs-glass-border: 1px solid rgba(255, 255, 255, 0.6);
}

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

body {
    background-color: #f7faff;
    font-family: 'Noto Sans JP', sans-serif;
    color: var(--fs-text-main);
    line-height: 1.6;
}

/* Page Container */
.fs-master-wrap {
    overflow-x: hidden;
}

.fs-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.fs-access-hero {
    position: relative;
    padding: 140px 0 80px; /* Account for fixed header */
    text-align: center;
    background: linear-gradient(180deg, var(--fs-sky-light) 0%, #f7faff 100%);
    overflow: hidden;
}

.fs-hero-bg {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 50% 50%, rgba(255,255,255,0.8) 0%, transparent 60%);
    opacity: 0.6;
    z-index: 0;
    pointer-events: none;
}

.fs-hero-content {
    position: relative;
    z-index: 1;
}

.fs-eyebrow {
    display: inline-block;
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    color: var(--fs-sky-dark);
    letter-spacing: 0.1em;
    margin-bottom: 12px;
    font-size: 14px;
}

.fs-title {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--fs-text-main);
    line-height: 1.3;
    margin-bottom: 24px;
    background: linear-gradient(45deg, #1565c0, #42a5f5);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.fs-lead {
    font-size: 1.1rem;
    color: var(--fs-text-sub);
    margin-bottom: 24px;
    font-weight: 500;
}

.fs-updated {
    font-size: 0.85rem;
    color: var(--fs-text-sub);
    opacity: 0.8;
    margin-bottom: 32px;
}

.fs-hero-buttons {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

/* ==========================================================================
   UI Components
   ========================================================================== */
.fs-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: 50px;
    font-weight: 700;
    text-decoration: none;
    transition: all 0.3s ease;
    font-size: 1rem;
}

.fs-btn-primary {
    background: linear-gradient(135deg, var(--fs-berry), var(--fs-berry-dark));
    color: white;
    box-shadow: 0 4px 15px rgba(255, 64, 129, 0.3);
}
.fs-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 64, 129, 0.4);
    color: white;
    text-decoration: none;
}

.fs-btn-glass {
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(10px);
    border: 1px solid white;
    color: var(--fs-text-main);
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}
.fs-btn-glass:hover {
    background: white;
    transform: translateY(-2px);
    text-decoration: none;
    color: var(--fs-text-main);
}

.fs-btn-sm {
    padding: 8px 16px;
    font-size: 0.85rem;
    border-width: 1px;
}
.fs-btn-outline {
    background: transparent;
    border: 1px solid var(--fs-sky-main); /* Thinner border for cleaner look */
    color: var(--fs-text-sub);
}
.fs-btn-outline:hover {
    background: var(--fs-sky-light);
    color: var(--fs-text-main);
    text-decoration: none;
}

.fs-section {
    margin-bottom: 80px;
}

.fs-section-title {
    text-align: center;
    font-size: 1.5rem;
    margin-bottom: 40px;
    font-weight: 700;
    position: relative;
    padding-bottom: 15px;
}
.fs-section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--fs-berry);
    border-radius: 3px;
}
.fs-section-title .en {
    display: block;
    font-family: 'Outfit', sans-serif;
    font-size: 0.9rem;
    color: var(--fs-sky-dark);
    margin-bottom: 5px;
    letter-spacing: 0.1em;
}

.fs-card {
    background: white;
    border-radius: var(--fs-radius-lg);
    padding: 30px;
    box-shadow: var(--fs-shadow-card);
    transition: transform 0.3s ease;
}

/* ==========================================================================
   Info Grid
   ========================================================================== */
.fs-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-top: -40px; /* Overlap hero */
    margin-bottom: 60px;
    position: relative;
    z-index: 2;
}

.fs-info-card {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 24px;
}

.fs-card-icon {
    width: 50px;
    height: 50px;
    background: var(--fs-sky-light);
    color: var(--fs-sky-dark);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.fs-card-text h3 {
    font-size: 1rem;
    margin-bottom: 8px;
    color: var(--fs-text-sub);
}
.fs-card-text p {
    font-size: 0.95rem;
    line-height: 1.5;
    margin-bottom: 4px;
}
.fs-list-unstyled {
    list-style: none;
    margin-bottom: 15px;
}
.fs-list-unstyled li {
    font-size: 0.95rem;
    margin-bottom: 8px;
    color: var(--fs-text-sub);
}
.fs-list-unstyled li i {
    color: var(--fs-sky-dark);
    margin-right: 6px;
}
.fs-card-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 12px;
}
.fs-link-sm {
    font-size: 0.85rem;
    color: var(--fs-sky-dark);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-weight: 700;
}
.fs-link-sm:hover {
    text-decoration: underline;
}
.fs-card-text strong {
    font-size: 1.1rem;
    color: var(--fs-text-main);
}

/* ==========================================================================
   Timeline
   ========================================================================== */
.fs-route-card {
    max-width: 800px;
    margin: 0 auto;
    border: 1px solid #e3f2fd;
}

.fs-route-header {
    text-align: center;
    margin-bottom: 30px;
}
.fs-badge-red {
    background: var(--fs-berry);
    color: white;
    font-size: 12px;
    padding: 4px 12px;
    border-radius: 20px;
    font-weight: 700;
    letter-spacing: 0.05em;
    display: inline-block;
    margin-bottom: 8px;
}

.fs-timeline {
    position: relative;
    padding-left: 20px;
}

.fs-timeline::before {
    content: '';
    position: absolute;
    top: 20px;
    bottom: 20px;
    left: 45px;
    width: 2px;
    background: #e0e0e0;
    border-radius: 1px;
}

.fs-timeline-item {
    display: flex;
    align-items: center;
    margin-bottom: 30px;
    position: relative;
    z-index: 1;
}

.fs-time-point {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    background: #eee;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 13px;
    color: white;
    margin-right: 20px;
    flex-shrink: 0;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.bg-shinjuku { background: var(--fs-sky-dark); }
.bg-bubai { background: #eb1e79; } /* Keio Pink */
.icon-walk { background: var(--fs-sky-main); font-size: 20px; }
.icon-goal { background: var(--fs-berry); font-size: 20px; }

.fs-time-content {
    flex-grow: 1;
}

.fs-time-desc {
    font-weight: 500;
    margin-bottom: 2px;
}

.fs-time-duration {
    font-size: 12px;
    color: var(--fs-text-sub);
    background: #f5f5f5;
    padding: 2px 8px;
    border-radius: 4px;
}

.fs-card-footer {
    border-top: 1px solid #f0f0f0;
    margin-top: 20px;
    padding-top: 20px;
    text-align: center;
}
.fs-route-links {
    display: flex;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
}
.fs-link {
    color: var(--fs-sky-dark);
    text-decoration: none;
    font-weight: 700;
    font-size: 0.9rem;
}

/* Modern Route Button */
.fs-btn-route {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    background: linear-gradient(135deg, #ffffff 0%, #f0f8ff 100%);
    border: 1px solid rgba(225, 245, 254, 0.8);
    border-radius: 50px;
    box-shadow: 0 4px 15px rgba(3, 169, 244, 0.1);
    color: var(--fs-sky-dark);
    font-weight: 700;
    font-size: 0.95rem;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}
.fs-btn-route i {
    color: var(--fs-sky-main);
    font-size: 1.1em;
}
.fs-btn-route:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(3, 169, 244, 0.2);
    border-color: var(--fs-sky-main);
    color: var(--fs-sky-main);
}
.fs-link:hover {
    text-decoration: underline;
}

/* Table */
.fs-table-card {
    max-width: 800px;
    margin: 40px auto 0;
}
.fs-responsive-table {
    overflow-x: auto;
}
table {
    width: 100%;
    border-collapse: collapse;
    min-width: 500px;
}
th {
    text-align: left;
    padding: 12px;
    color: var(--fs-text-sub);
    font-size: 0.9rem;
    border-bottom: 2px solid #f0f0f0;
}
td {
    padding: 16px 12px;
    border-bottom: 1px solid #f9f9f9;
    font-weight: 500;
}
.fs-station {
    font-weight: 700;
    color: var(--fs-text-main);
}

.fs-td-links a {
    color: var(--fs-sky-dark);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 700;
}
.fs-td-links a:hover {
    text-decoration: underline;
}
.fs-note-sm {
    font-size: 0.8rem;
    color: #ef5350;
    margin-top: 4px;
}
.fs-note-sm.center {
    text-align: center;
    margin-top: 15px;
}

/* ==========================================================================
   Map & FAQ & Notice
   ========================================================================== */
.fs-map-card {
    max-width: 900px;
    margin: 0 auto;
}
.fs-map-info-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 20px;
    padding: 24px;
    background: #f8fbff;
    border-radius: 16px;
    border: 1px solid #e1f5fe;
}
.fs-map-details {
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.fs-map-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    color: var(--fs-text-main);
}
.fs-phone-link {
    text-decoration: none;
    transition: opacity 0.3s;
}
.fs-phone-link:hover {
    opacity: 0.7;
}
.fs-map-icon {
    width: 24px;
    color: var(--fs-sky-main);
    text-align: center;
    padding-top: 2px;
}
.fs-map-text {
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.fs-map-text strong {
    font-size: 1.1rem;
    color: var(--fs-sky-dark);
}
.fs-address {
    font-size: 0.95rem;
}
.fs-phone-number {
    font-weight: 700;
    font-size: 1.1rem;
    letter-spacing: 0.05em;
}
.fs-map-btn {
    flex-shrink: 0;
}

@media (max-width: 768px) {
    .fs-map-info-container {
        flex-direction: column;
        align-items: flex-start;
        padding: 20px;
    }
    .fs-map-btn {
        width: 100%;
    }
}
.fs-map-frame-wrap {
    width: 100%;
    height: 400px;
    border-radius: var(--fs-radius-md);
    overflow: hidden;
    position: relative;
    box-shadow: inset 0 0 20px rgba(0,0,0,0.1);
}
.fs-map-frame-wrap iframe {
    width: 100%;
    height: 100%;
}

.fs-alert-warning {
    background: #fff3e0;
    color: #e65100;
    padding: 16px;
    border-radius: 12px;
    display: flex;
    gap: 12px;
    align-items: flex-start; /* Align top for multi-line */
    margin-top: 20px;
    font-weight: 700;
    font-size: 0.9rem;
}

/* Notice List */
.fs-notice-card {
    background: white;
}
.fs-check-list {
    list-style: none;
}
.fs-check-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 16px;
    padding-bottom: 16px;
    border-bottom: 1px solid #f5f5f5;
}
.fs-check-list li:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}
.fs-check-list i {
    font-size: 1.2rem;
    margin-top: 2px;
}
.text-red { color: #fe5555; }
.text-orange { color: #ff9800; }
.text-blue { color: #2196f3; }

/* FAQ */
.fs-accordion {
    max-width: 800px;
    margin: 0 auto;
}
.fs-details {
    background: white;
    border-radius: 12px;
    margin-bottom: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.03);
    overflow: hidden;
}
.fs-details summary {
    padding: 20px;
    font-weight: 700;
    cursor: pointer;
    list-style: none;
    position: relative;
    padding-right: 50px;
}
.fs-details summary::-webkit-details-marker {
    display: none;
}
.fs-details summary i {
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    transition: transform 0.3s;
    color: var(--fs-sky-dark);
}
.fs-details[open] summary i {
    transform: translateY(-50%) rotate(180deg);
}
.fs-details-content {
    padding: 0 20px 20px;
    color: var(--fs-text-sub);
    font-size: 0.95rem;
}
.fs-note {
    font-size: 0.85rem;
    color: #ef5350;
    margin-top: 8px;
}

/* CTA Bottom */
.fs-cta-section {
    background: linear-gradient(135deg, #e3f2fd, #fff);
    border-radius: var(--fs-radius-lg);
    padding: 60px 20px;
    text-align: center;
    margin-bottom: 0;
}
.fs-cta-inner h2 {
    font-size: 1.8rem;
    color: var(--fs-text-main);
    margin-bottom: 12px;
}
.fs-cta-inner p {
    color: var(--fs-text-sub);
    margin-bottom: 30px;
}
.fs-btn-lg {
    padding: 18px 40px;
    font-size: 1.1rem;
}
.fs-cta-note {
    margin-top: 16px;
    font-size: 0.85rem;
    opacity: 0.7;
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 768px) {
    .fs-title { font-size: 2rem; }
    .fs-access-hero { padding: 120px 0 60px; }
    .fs-hero-buttons { flex-direction: column; width: 100%; max-width: 320px; margin: 0 auto; gap: 12px; }
    .fs-btn { width: 100%; }

    /* Info Grid */
    .fs-info-grid { margin-top: -20px; grid-template-columns: 1fr; gap: 16px; }
    .fs-card { padding: 20px; }

    /* Timeline */
    .fs-timeline::before { left: 25px; }
    .fs-timeline { padding-left: 0; }
    .fs-time-point { width: 50px; height: 50px; font-size: 10px; margin-right: 12px; letter-spacing: -0.05em; line-height: 1.2; }
    .fs-time-point i { font-size: 20px; }
    .fs-time-content { padding-top: 0; }

    /* Utilities */
    .fs-br-desktop { display: none; }

    /* Map */
    .fs-map-frame-wrap { height: 280px; }

    /* Table Responsive Visual Cue */
    .fs-responsive-table {
        position: relative;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        margin-right: -20px; /* Bleed out */
        padding-right: 20px;
        mask-image: linear-gradient(to right, black 90%, transparent 100%);
        -webkit-mask-image: linear-gradient(to right, black 90%, transparent 100%);
    }
    table { min-width: 450px; } /* Ensure it scrolls */
    th, td { padding: 12px 8px; font-size: 0.85rem; }
    .fs-station { font-size: 0.9rem; display: block; margin-bottom: 2px; }
    .fs-td-links a { font-size: 0.8rem; display: inline-block; margin: 2px 0; }

    /* Notice */
    .fs-alert-warning { flex-direction: column; align-items: flex-start; gap: 8px; }
    .fs-check-list li { flex-direction: column; gap: 4px; }
    .fs-check-list i { font-size: 1.1rem; }
}