:root {
    --color-black: #1a1611;
    --color-white: #faf6ee;
    --color-gold: #e0b25c;
    --color-amber: #c98a2e;
    --color-bronze: #5c3a10;

    --bg-color: var(--color-white);
    --text-color: var(--color-black);
    --accent-color: var(--color-gold);
    --accent-warm: var(--color-amber);
    --font-size-base: 16px;

    --border-subtle: color-mix(in srgb, var(--text-color) 20%, transparent);
    --border-radius-md: 8px;
    --control-height: 38px;
}

html {
    font-size: var(--font-size-base);
}

[data-theme="dark"] {
    --bg-color: var(--color-black);
    --text-color: var(--color-white);
    --accent-color: var(--color-gold);
    --accent-warm: var(--color-amber);
}

* {
    box-sizing: border-box;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: 'Inter', system-ui, sans-serif;
    margin: 0;
    padding: 0;
    transition: background-color 0.4s ease, color 0.4s ease;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ===== Page décompte ===== */
.countdown-page {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    text-align: center;
    padding: 5rem 2rem 2rem;
    position: relative;
    overflow: hidden;
}

.countdown-page::before {
    content: "";
    position: absolute;
    top: -20%;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, var(--color-gold) 0%, transparent 70%);
    opacity: 0.08;
    pointer-events: none;
    animation: pulse 8s ease-in-out infinite;
}

.logo {
    width: 120px;
    height: 120px;
    margin-bottom: 1.5rem;
    animation: float 4s ease-in-out infinite, fadeInUp 0.6s ease backwards;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

@keyframes pulse {
    0%, 100% { opacity: 0.08; transform: translateX(-50%) scale(1); }
    50% { opacity: 0.12; transform: translateX(-50%) scale(1.1); }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.countdown-page h1 {
    font-family: 'Fraunces', serif;
    font-size: clamp(2rem, 5vw, 3.5rem);
    color: var(--accent-color);
    margin: 0 0 0.5rem;
    letter-spacing: -0.02em;
    animation: fadeInUp 0.6s ease 0.1s backwards;
}

.tagline {
    font-size: 1.1rem;
    opacity: 0.75;
    margin-bottom: 3rem;
    max-width: 500px;
    animation: fadeInUp 0.6s ease 0.2s backwards;
}

/* ===== Countdown ===== */
.countdown {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    justify-content: center;
}

.countdown-unit {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: color-mix(in srgb, var(--accent-color) 12%, transparent);
    border: 1px solid color-mix(in srgb, var(--accent-color) 20%, transparent);
    border-radius: 12px;
    padding: 1.2rem 0.75rem;
    min-width: 100px;
    flex: 1 0 auto;
    box-shadow: 0 2px 8px color-mix(in srgb, var(--color-black) 4%, transparent);
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
    animation: fadeInUp 0.5s ease backwards;
}

.countdown-unit:hover {
    transform: translateY(-4px) scale(1.02);
    border-color: var(--accent-color);
    box-shadow: 0 8px 24px color-mix(in srgb, var(--accent-color) 20%, transparent);
}

.countdown-unit:active {
    transform: translateY(-2px) scale(0.98);
}

.countdown-unit:nth-child(1) { animation-delay: 0.1s; }
.countdown-unit:nth-child(2) { animation-delay: 0.2s; }
.countdown-unit:nth-child(3) { animation-delay: 0.3s; }
.countdown-unit:nth-child(4) { animation-delay: 0.4s; }

.countdown-value {
    font-family: 'Fraunces', serif;
    font-size: 1.4em;
    font-weight: 600;
    color: var(--accent-warm);
    line-height: 1;
}

.countdown-label {
    font-size: 0.9em;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    opacity: 0.7;
    margin-top: 0.5rem;
    text-align: center;
    line-height: 1.2;
}

/* ===== Préférences (nav) ===== */
.preferences-nav {
    position: fixed;
    top: 1.25rem;
    right: 1.25rem;
    z-index: 50;
}

.preferences-button {
    display: none;
    align-items: center;
    justify-content: center;
    background: var(--bg-color);
    border: 1px solid var(--border-subtle);
    color: var(--text-color);
    border-radius: var(--border-radius-md);
    width: 44px;
    height: 44px;
    padding: 0;
    cursor: pointer;
    box-shadow: 0 1px 3px color-mix(in srgb, var(--color-black) 6%, transparent);
    transition: box-shadow 0.2s ease, transform 0.15s ease;
}

.preferences-button:hover {
    box-shadow: 0 4px 12px color-mix(in srgb, var(--color-black) 10%, transparent);
}

.preferences-button:active {
    transform: scale(0.95);
}

.preferences-icon {
    width: 20px;
    height: 20px;
}

.preferences-panel {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 0.5rem;
    background: transparent;
    border: none;
    padding: 0;
    box-shadow: none;
    position: static;
}

.preferences-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* ===== Contrôles (boutons/liens communs) ===== */
.lang-link,
.icon-button {
    height: var(--control-height);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    border: 1px solid var(--border-subtle);
    border-radius: var(--border-radius-md);
    color: var(--text-color);
    font-size: 0.85rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    box-shadow: 0 1px 3px color-mix(in srgb, var(--color-black) 6%, transparent);
    transition: background-color 0.2s ease, border-color 0.2s ease, transform 0.15s ease, box-shadow 0.2s ease;
}

.lang-link:hover,
.icon-button:hover {
    background: color-mix(in srgb, var(--text-color) 12%, transparent);
    border-color: var(--accent-color);
    box-shadow: 0 4px 12px color-mix(in srgb, var(--color-black) 8%, transparent);
}

.lang-link.active:hover {
    background: var(--accent-warm);
}

.lang-link:active,
.icon-button:active {
    transform: scale(0.96);
}

.lang-link:focus-visible,
.icon-button:focus-visible,
.preferences-button:focus-visible {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

.lang-link {
    background: transparent;
    text-decoration: none;
    padding: 0.4rem 0.7rem;
    position: relative;
    overflow: hidden;
}

.lang-link.active {
    background: var(--accent-color);
    color: var(--color-white);
    border-color: var(--accent-color);
    box-shadow: 0 2px 8px color-mix(in srgb, var(--accent-color) 40%, transparent);
}

.lang-link.active::after {
    content: "";
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(120deg, transparent, color-mix(in srgb, white 40%, transparent), transparent);
    transition: left 0.6s ease;
}

.lang-link.active:hover::after {
    left: 100%;
}

.icon-button {
    background: transparent;
    padding: 0 0.7rem;
}

.btn-icon {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

#font-toggle {
    width: var(--control-height);
    padding: 0;
}

.theme-button .icon-light {
    display: none;
}

[data-theme="dark"] .theme-button .icon-light {
    display: block;
}

[data-theme="dark"] .theme-button .icon-dark {
    display: none;
}

.theme-text {
    white-space: nowrap;
}

.icon-motion-off {
    display: none;
}

[data-motion="reduced"] .icon-motion-on {
    display: none;
}

[data-motion="reduced"] .icon-motion-off {
    display: block;
}

/* ===== Mobile : menu burger ===== */
@media (max-width: 600px) {
    .countdown-page {
        padding-top: 4.5rem;
    }

    .countdown {
        gap: 0.5rem;
    }

    .countdown-unit {
        width: 68px;
        padding: 0.9rem 0.3rem;
    }

    .logo {
        width: 90px;
        height: 90px;
    }

    .preferences-button {
        display: flex;
    }

    .preferences-panel {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 0.6rem;
        position: absolute;
        top: calc(100% + 0.5rem);
        right: 0;
        background: var(--bg-color);
        border: 1px solid var(--border-subtle);
        border-radius: 12px;
        padding: 1rem;
        min-width: 180px;
        box-shadow: 0 8px 32px color-mix(in srgb, var(--color-black) 18%, transparent);
    }

    .preferences-panel[hidden] {
        display: none;
    }

    .preferences-group {
        display: contents;
    }

    .lang-link,
    .icon-button,
    #font-toggle,
    .theme-button {
        width: 100%;
    }

    .theme-text {
        position: absolute;
        width: 1px;
        height: 1px;
        padding: 0;
        margin: -1px;
        overflow: hidden;
        clip: rect(0, 0, 0, 0);
        white-space: nowrap;
        border: 0;
    }
}

/* ===== Réduction des animations ===== */
@media (prefers-reduced-motion: reduce) {
    html:not([data-motion="normal"]) * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html:not([data-motion="normal"]) .logo {
        animation: none !important;
    }

    html:not([data-motion="normal"]) .countdown-page::before {
        animation: none !important;
    }

    html:not([data-motion="normal"]) .countdown-unit:hover,
    html:not([data-motion="normal"]) .countdown-unit:active {
        transform: none;
        border-color: color-mix(in srgb, var(--accent-color) 20%, transparent);
        box-shadow: 0 2px 8px color-mix(in srgb, var(--color-black) 4%, transparent);
    }

    html:not([data-motion="normal"]) .lang-link:not(.active):hover,
    html:not([data-motion="normal"]) .icon-button:hover,
    html:not([data-motion="normal"]) .lang-link:active,
    html:not([data-motion="normal"]) .icon-button:active,
    html:not([data-motion="normal"]) .preferences-button:active {
        background: transparent;
        border-color: var(--border-subtle);
        transform: none;
        box-shadow: 0 1px 3px color-mix(in srgb, var(--color-black) 6%, transparent);
    }

    html:not([data-motion="normal"]) .lang-link.active:hover {
        background: var(--accent-warm);
        transform: none;
    }

    html:not([data-motion="normal"]) .lang-link.active::after {
        display: none;
    }
}

[data-motion="reduced"] * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
}

[data-motion="reduced"] .logo {
    animation: none !important;
}

[data-motion="reduced"] .countdown-page::before {
    animation: none !important;
}

[data-motion="reduced"] .countdown-unit:hover,
[data-motion="reduced"] .countdown-unit:active {
    transform: none;
    border-color: color-mix(in srgb, var(--accent-color) 20%, transparent);
    box-shadow: 0 2px 8px color-mix(in srgb, var(--color-black) 4%, transparent);
}

[data-motion="reduced"] .lang-link:not(.active):hover,
[data-motion="reduced"] .icon-button:hover,
[data-motion="reduced"] .lang-link:active,
[data-motion="reduced"] .icon-button:active,
[data-motion="reduced"] .preferences-button:active {
    background: transparent;
    border-color: var(--border-subtle);
    transform: none;
    box-shadow: 0 1px 3px color-mix(in srgb, var(--color-black) 6%, transparent);
}

[data-motion="reduced"] .lang-link.active:hover {
    background: var(--accent-warm);
    transform: none;
}

[data-motion="reduced"] .lang-link.active::after {
    display: none;
}