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

:root {
    --color-bg: #1a1a1a;
    --color-surface: #2a2a2a;
    --color-accent: #c8a45a;
    --color-text: #f0ece2;
    --color-text-muted: #a09a8c;
    --transition: 0.3s ease;
}

html, body {
    height: 100%;
    font-family: 'Georgia', 'Times New Roman', serif;
    background: var(--color-bg);
    color: var(--color-text);
    overflow-x: hidden;
}

/* ========== LANDING PAGE ========== */

#landing {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background:
        radial-gradient(ellipse at center, rgba(200, 164, 90, 0.08) 0%, transparent 70%),
        var(--color-bg);
}

.landing-content {
    text-align: center;
    padding: 2rem;
}

.restaurant-name {
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 300;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: 0.5rem;
}

.subtitle {
    font-size: clamp(0.85rem, 2vw, 1.1rem);
    color: var(--color-text-muted);
    margin-bottom: 3rem;
    font-style: italic;
}

.flags-container {
    display: flex;
    gap: 2.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

.flag-btn {
    background: none;
    border: none;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    transition: transform var(--transition);
}

.flag-btn:hover,
.flag-btn:focus-visible {
    transform: scale(1.1);
    outline: none;
}

.flag-wrapper {
    width: 120px;
    height: 80px;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
    border: 2px solid rgba(200, 164, 90, 0.3);
    transition: border-color var(--transition), box-shadow var(--transition);
}

.flag-btn:hover .flag-wrapper,
.flag-btn:focus-visible .flag-wrapper {
    border-color: var(--color-accent);
    box-shadow: 0 6px 30px rgba(200, 164, 90, 0.25);
}

.flag-svg {
    width: 100%;
    height: 100%;
    display: block;
}

.flag-label {
    font-size: 1rem;
    color: var(--color-text-muted);
    letter-spacing: 0.1em;
    transition: color var(--transition);
}

.flag-btn:hover .flag-label,
.flag-btn:focus-visible .flag-label {
    color: var(--color-accent);
}

/* ========== VIEWER ========== */

.hidden {
    display: none !important;
}

#viewer {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: var(--color-bg);
}

.viewer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1.5rem;
    background: var(--color-surface);
    border-bottom: 1px solid rgba(200, 164, 90, 0.2);
    position: sticky;
    top: 0;
    z-index: 10;
}

.back-btn {
    background: none;
    border: 1px solid var(--color-accent);
    color: var(--color-accent);
    padding: 0.5rem 1.25rem;
    border-radius: 4px;
    cursor: pointer;
    font-family: inherit;
    font-size: 0.95rem;
    transition: background var(--transition), color var(--transition);
}

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

.page-info {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    letter-spacing: 0.05em;
}

.viewer-container {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 1rem;
}

.canvas-wrapper {
    max-width: 100%;
    max-height: calc(100vh - 70px);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

#pdf-canvas {
    max-width: 100%;
    max-height: calc(100vh - 80px);
    object-fit: contain;
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.5);
    border-radius: 4px;
}

.nav-btn {
    position: fixed;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(42, 42, 42, 0.85);
    border: 1px solid rgba(200, 164, 90, 0.3);
    color: var(--color-accent);
    font-size: 1.5rem;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition), border-color var(--transition);
    z-index: 5;
}

.nav-btn:hover {
    background: var(--color-accent);
    color: var(--color-bg);
    border-color: var(--color-accent);
}

.nav-prev {
    left: 1rem;
}

.nav-next {
    right: 1rem;
}

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

@media (max-width: 600px) {
    .flags-container {
        gap: 1.5rem;
    }

    .flag-wrapper {
        width: 90px;
        height: 60px;
    }

    .flag-label {
        font-size: 0.85rem;
    }

    .subtitle {
        padding: 0 1rem;
    }

    .nav-btn {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
    }

    .nav-prev {
        left: 0.5rem;
    }

    .nav-next {
        right: 0.5rem;
    }

    .viewer-header {
        padding: 0.5rem 1rem;
    }

    .back-btn {
        padding: 0.4rem 0.8rem;
        font-size: 0.85rem;
    }

    .page-info {
        font-size: 0.85rem;
    }
}

/* Touch swipe hint animation */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

#viewer {
    animation: fadeIn 0.3s ease;
}