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

body {
    font-family: 'Inter', system-ui, sans-serif;
    font-weight: 300;
    min-height: 100vh;
    overflow-x: hidden;
    cursor: col-resize;
}

/* ── Layers ── */
.layer {
    position: fixed;
    inset: 0;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    overflow-y: auto;
}

.layer-dark {
    background: #0f0f0f;
    color: #e8e4df;
    --accent: #c9a96e;
    --muted: #8a8580;
    --muted-faint: #4a4540;
    --fond: #0f0f0f;
    --texte: #e8e4df;
    z-index: 1;
}

.layer-light {
    background: #f5f0e8;
    color: #3a3530;
    --accent: #c9a96e;
    --muted: #8a8580;
    --muted-faint: #c5bfb5;
    --fond: #f5f0e8;
    --texte: #3a3530;
    z-index: 2;
    clip-path: inset(0 0 0 0);
}

/* ── Content (shared layout) ── */
.layer main {
    flex: 1;
    max-width: 560px;
    margin: 0 auto;
    padding: 25vh 2rem 6rem;
    text-align: center;
    width: 100%;
}

.layer h1 {
    font-family: 'Cormorant Garamond', Georgia, serif;
    font-size: clamp(2.8rem, 7vw, 4.2rem);
    font-weight: 300;
    letter-spacing: 0.05em;
    color: var(--accent);
    margin-bottom: 0.5rem;
}

.layer .subtitle {
    font-family: 'Cormorant Garamond', Georgia, serif;
    font-size: clamp(1rem, 2.5vw, 1.25rem);
    font-weight: 300;
    font-style: italic;
    color: var(--muted);
    margin-bottom: 4rem;
}

.layer .separator {
    width: 2rem;
    height: 1px;
    background: var(--muted-faint);
    margin: 0 auto 3rem;
}

.layer .description {
    font-size: 0.9rem;
    line-height: 1.8;
    color: var(--muted);
}

.layer .newsletter {
    margin-top: 3rem;
}

.layer .newsletter p {
    font-size: 0.85rem;
    color: var(--muted);
    margin-bottom: 1.2rem;
}

.layer .newsletter form {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.8rem;
}

.layer .email-row {
    display: flex;
    gap: 0;
    width: 100%;
    max-width: 380px;
}

.layer .newsletter input[type="email"] {
    background: transparent;
    border: 1px solid var(--muted-faint);
    color: var(--texte);
    font-family: 'Inter', system-ui, sans-serif;
    font-size: 0.85rem;
    font-weight: 300;
    padding: 0.6rem 1rem;
    flex: 1;
    border-radius: 0;
    outline: none;
    transition: border-color 0.2s;
}

.layer .newsletter input[type="email"]:focus {
    border-color: var(--accent);
}

.layer .newsletter input[type="email"]::placeholder {
    color: var(--muted-faint);
}

.layer .lang-toggle {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.layer .lang-toggle label {
    font-size: 0.8rem;
    color: var(--muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.layer .lang-toggle input[type="radio"] {
    accent-color: var(--accent);
}

.layer .newsletter button {
    background: transparent;
    border: 1px solid var(--muted-faint);
    border-left: none;
    color: var(--accent);
    font-family: 'Cormorant Garamond', Georgia, serif;
    font-size: 0.95rem;
    font-weight: 400;
    letter-spacing: 0.05em;
    padding: 0.5rem 1.5rem;
    cursor: pointer;
    white-space: nowrap;
    transition: border-color 0.2s, background 0.2s, color 0.2s;
}

.layer .newsletter button:hover {
    border-color: var(--accent);
    background: var(--accent);
    color: var(--fond);
}

.layer .newsletter .msg {
    font-size: 0.8rem;
    margin-top: 0.5rem;
    min-height: 1.2em;
}

.msg-ok { color: var(--accent); }
.msg-err { color: #c97070; }

.layer footer {
    max-width: 560px;
    margin: 0 auto;
    padding: 0 2rem 3rem;
    text-align: center;
}

.layer footer a {
    font-size: 0.75rem;
    color: var(--muted-faint);
    text-decoration: none;
    letter-spacing: 0.05em;
    transition: color 0.2s;
}

.layer footer a:hover {
    color: var(--accent);
}

/* ── Slider ── */
#slider {
    position: fixed;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--accent, #c9a96e);
    z-index: 10;
    cursor: col-resize;
    transition: none;
}

#slider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 2px solid #c9a96e;
    background: rgba(15, 15, 15, 0.7);
    backdrop-filter: blur(4px);
}

#slider::after {
    content: '◂ ▸';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #c9a96e;
    font-size: 10px;
    letter-spacing: 2px;
    white-space: nowrap;
}