:root {
    --bg: #ffffff;
    --accent: #ff8c00;
    --line: rgba(0,0,0,0.06);
    --text: #1a1a1a;
    --text-light: #6c757d;
    --card-bg: #ffffff;
    --border: #e5e5e5;
    --shadow: 0 2px 8px rgba(0,0,0,0.04);
}

body.dark {
    --bg: #121212;
    --line: rgba(255,255,255,0.08);
    --text: #f0f0f0;
    --text-light: #a0a0a0;
    --card-bg: #1e1e1e;
    --border: #2c2c2c;
    --shadow: 0 2px 8px rgba(0,0,0,0.3);
}

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

body {
    background: var(--bg);
    font-family: 'Montserrat', 'Helvetica Neue', Arial, sans-serif;
    color: var(--text);
    transition: background 0.2s, color 0.2s;
}

/* Header fixe */
.prism-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 32px;
    backdrop-filter: blur(10px);
    background: rgba(var(--bg-rgb, 255,255,255), 0.8);
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 20px;
    font-weight: 900;
    letter-spacing: -1px;
    text-transform: uppercase;
}
.brand-icon { height: 32px; width: auto; }
.brand .light { font-weight: 400; color: var(--accent); }

.prism-nav {
    display: flex;
    gap: 24px;
    align-items: center;
}
.nav-link {
    font-size: 13px;
    font-weight: 600;
    text-decoration: none;
    color: var(--text);
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 6px 0;
    border-bottom: 2px solid transparent;
}
.nav-link.active {
    border-bottom-color: var(--accent);
    color: var(--accent);
}
.icon-btn {
    background: none;
    border: none;
    font-size: 18px;
    cursor: pointer;
    color: var(--text);
    padding: 8px;
    border-radius: 50%;
    transition: 0.2s;
}
.icon-btn:hover {
    background: var(--line);
    color: var(--accent);
}

/* Container principal */
.prism-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 24px 24px;
}

/* Barre des langues (boutons) */
.lang-bar {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 16px;
    margin-bottom: 32px;
}
.lang-btn {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 40px;
    padding: 12px 24px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: 0.2s;
    color: var(--text);
}
.lang-btn:hover {
    border-color: var(--accent);
}
.swap-btn {
    background: var(--accent);
    border: none;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    transition: 0.2s;
}
.swap-btn:hover {
    transform: rotate(180deg);
}

/* Grille de traduction */
.translation-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-bottom: 28px;
}
.panel {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 28px;
    overflow: hidden;
    transition: box-shadow 0.2s;
}
.panel:hover {
    box-shadow: var(--shadow);
}
.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
}
.panel-label {
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--accent);
}
.panel-actions {
    display: flex;
    gap: 12px;
}
.icon-btn-sm {
    background: none;
    border: none;
    font-size: 14px;
    cursor: pointer;
    color: var(--text-light);
    padding: 6px;
    border-radius: 50%;
    transition: 0.2s;
}
.icon-btn-sm:hover {
    color: var(--accent);
    background: var(--line);
}
#sourceText {
    width: 100%;
    min-height: 200px;
    padding: 20px;
    font-size: 20px;
    font-family: 'Montserrat', monospace;
    border: none;
    resize: vertical;
    background: transparent;
    color: var(--text);
    outline: none;
    line-height: 1.4;
}
.target-content {
    min-height: 200px;
    padding: 20px;
    font-size: 20px;
    line-height: 1.4;
    white-space: pre-wrap;
    word-wrap: break-word;
    font-weight: 500;
}
.char-counter {
    text-align: right;
    padding: 8px 20px;
    font-size: 12px;
    color: var(--text-light);
    border-top: 1px solid var(--border);
}
.website-row {
    display: flex;
    justify-content: center;
    margin-top: 8px;
}
.secondary-btn {
    background: transparent;
    border: 1.5px solid var(--accent);
    color: var(--accent);
    border-radius: 40px;
    padding: 12px 28px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.secondary-btn:hover {
    background: var(--accent);
    color: white;
}

/* Overlay de sélection des langues */
.lang-modal {
    display: none;
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0,0,0,0.7);
    backdrop-filter: blur(8px);
    justify-content: center;
    align-items: center;
    z-index: 2000;
}
.lang-modal-content {
    background: var(--card-bg);
    border-radius: 32px;
    width: 90%;
    max-width: 520px;
    max-height: 80vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}
.lang-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 24px;
    border-bottom: 1px solid var(--border);
    font-weight: 700;
}
.close-lang-modal {
    background: none;
    border: none;
    font-size: 26px;
    cursor: pointer;
    color: var(--text);
}
.lang-search {
    padding: 16px 24px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid var(--border);
}
.lang-search i {
    color: var(--text-light);
}
.lang-search input {
    flex: 1;
    border: none;
    background: none;
    font-size: 16px;
    outline: none;
    color: var(--text);
}
.lang-list {
    overflow-y: auto;
    padding: 12px;
}
.lang-item {
    padding: 12px 16px;
    cursor: pointer;
    border-radius: 40px;
    transition: 0.1s;
}
.lang-item:hover {
    background: var(--accent);
    color: white;
}
.lang-item.selected {
    background: var(--accent);
    color: white;
}

/* Modales classiques */
.modal {
    display: none;
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(4px);
    justify-content: center;
    align-items: center;
    z-index: 2000;
}
.modal-box {
    background: var(--card-bg);
    border-radius: 32px;
    width: 90%;
    max-width: 520px;
    border: 1px solid var(--border);
}
.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 24px;
    border-bottom: 1px solid var(--border);
    font-weight: 700;
}
.close-modal {
    background: none;
    border: none;
    font-size: 26px;
    cursor: pointer;
    color: var(--text);
}
.modal-body {
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}
.setting-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.setting-group select, .setting-group input[type="range"] {
    padding: 10px;
    border-radius: 40px;
    border: 1px solid var(--border);
    background: var(--bg);
    color: var(--text);
}
.full-input {
    width: 100%;
    padding: 12px;
    border-radius: 40px;
    border: 1px solid var(--border);
    background: var(--bg);
    color: var(--text);
}
.info-text {
    font-size: 12px;
    color: var(--text-light);
}
.primary-btn {
    background: var(--accent);
    border: none;
    color: white;
    padding: 12px 24px;
    border-radius: 40px;
    font-weight: 600;
    cursor: pointer;
}
.danger-btn {
    background: transparent;
    border: 1px solid #dc3545;
    color: #dc3545;
    padding: 10px;
    border-radius: 40px;
    cursor: pointer;
}
.prism-footer {
    text-align: center;
    padding: 32px;
    font-size: 12px;
    color: var(--text-light);
    border-top: 1px solid var(--border);
    margin-top: 40px;
}

/* Responsive */
@media (max-width: 780px) {
    .prism-header {
        flex-direction: column;
        gap: 12px;
        padding: 12px 16px;
    }
    .translation-grid {
        grid-template-columns: 1fr;
    }
    .lang-bar {
        flex-wrap: wrap;
    }
    .lang-btn {
        padding: 8px 16px;
        font-size: 14px;
    }
    #sourceText, .target-content {
        font-size: 16px;
        min-height: 150px;
    }
}