/* ==========================================================================
   Raijin BJJ Hanoi - Global Stylesheet
   ========================================================================== */

:root {
    --bg-primary: #121212;
    --bg-secondary: #1a1a1a;
    --bg-card: #242424;
    --text-primary: #f8f9fa;
    --text-muted: #adb5bd;
    --accent: #c8102e;
    --accent-hover: #a00d24;
    --border-color: #333333;
    --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --transition: 0.2s ease-in-out;
    --container-width: 1200px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
}

ul {
    list-style: none;
}

/* Accessibility */
:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
}

.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--accent);
    color: var(--text-primary);
    padding: 8px 16px;
    z-index: 100;
    transition: top var(--transition);
}

.skip-link:focus {
    top: 0;
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
    }
}

/* Container */
.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    font-weight: 600;
    font-size: 1rem;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color var(--transition), transform var(--transition);
    text-align: center;
}

.btn-primary {
    background-color: var(--accent);
    color: #ffffff;
}

.btn-primary:hover {
    background-color: var(--accent-hover);
}

.btn-outline {
    background-color: transparent;
    border: 2px solid var(--text-primary);
    color: var(--text-primary);
}

.btn-outline:hover {
    background-color: var(--text-primary);
    color: var(--bg-primary);
}

/* Header & Navigation */
header {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: 1.25rem;
    letter-spacing: 0.5px;
}

.logo-img {
    height: 50px;
    width: auto;
    object-fit: contain;
    border-radius: 4px;
}

.logo-placeholder {
    width: 40px;
    height: 40px;
    background-color: var(--accent);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    border-radius: 4px;
    font-size: 0.9rem;
}

.nav-menu {
    display: flex;
    gap: 28px;
    align-items: center;
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-muted);
    transition: color var(--transition);
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
}

.nav-link.active {
    position: relative;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--accent);
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-primary);
    padding: 8px;
}

.mobile-menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: currentColor;
    margin: 5px 0;
    transition: var(--transition);
}

/* Image Placeholder Component */
.img-placeholder {
    background-color: var(--bg-card);
    border: 2px dashed var(--border-color);
    color: var(--text-muted);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 24px;
    min-height: 280px;
    border-radius: 6px;
    font-size: 0.9rem;
}

.img-placeholder span {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

/* Hero Section */
.hero {
    padding: 20px 0;
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    border-bottom: 1px solid var(--border-color);
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}

.hero-content h1 {
    font-size: clamp(2.25rem, 4vw, 3.5rem);
    line-height: 1.15;
    font-weight: 800;
    margin-bottom: 20px;
    letter-spacing: -0.5px;
}

.hero-content p {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 32px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* Main Content Wrapper */
main {
    flex: 1;
}

.section {
    padding: 20px 0;
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: -0.5px;
}

.section-subtitle {
    color: var(--text-muted);
    font-size: 1.1rem;
    max-width: 700px;
    margin-bottom: 48px;
}

/* Grid & Cards */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 32px;
    display: flex;
    flex-direction: column;
}

.card h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
}

.card p {
    color: var(--text-muted);
    margin-bottom: 20px;
    flex: 1;
}

/* Notice / Placeholder Box */
.notice-box {
    background-color: rgba(200, 16, 46, 0.08);
    border: 1px solid rgba(200, 16, 46, 0.3);
    padding: 16px 20px;
    border-radius: 6px;
    margin-bottom: 24px;
    font-size: 0.95rem;
    color: #ffadb8;
}

.notice-box strong {
    color: #fff;
}

/* Timetable Table Styles */
.timetable-wrapper {
    overflow-x: auto;
    margin-bottom: 32px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: var(--bg-secondary);
}

.timetable {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    min-width: 650px;
}

.timetable th,
.timetable td {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.95rem;
}

.timetable th {
    background-color: var(--bg-card);
    font-weight: 600;
    color: var(--text-primary);
}

.timetable tr:last-child td {
    border-bottom: none;
}

.badge {
    display: inline-block;
    padding: 4px 8px;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 4px;
    text-transform: uppercase;
}

.badge-gi {
    background-color: #1e3a8a;
    color: #93c5fd;
}

.badge-nogi {
    background-color: #374151;
    color: #d1d5db;
}

.badge-open {
    background-color: #7f1d1d;
    color: #fca5a5;
}

.badge-beginner {
    background-color: #065f46;
    color: #6ee7b7;
}

/* Footer */
footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 60px 0 30px;
    margin-top: auto;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col h4 {
    font-size: 1.1rem;
    margin-bottom: 16px;
}

.footer-col p,
.footer-col ul li {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 10px;
}

.footer-col ul li a:hover {
    color: var(--text-primary);
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: 24px;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.map-container {
    width: 100%;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
}

.map-container iframe {
    width: 100%;
    height: 400px;
    display: block;
    border: 0;
}

html {
    scroll-behavior: smooth;
}

/* Responsive Media Queries */
@media (max-width: 900px) {

    .hero-grid,
    .grid-2,
    .grid-3 {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .nav-menu {
        display: none;
        position: absolute;
        top: 80px;
        left: 0;
        width: 100%;
        background-color: var(--bg-secondary);
        flex-direction: column;
        padding: 24px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
    }

    .nav-menu.active {
        display: flex;
    }

    .mobile-menu-toggle {
        display: block;
        margin-left: auto;
    }
}