:root {
    --bg: #f3f4f6;
    --surface: #ffffff;
    --ink: #111827;
    --ink-soft: #4b5563;
    --ink-faint: #6b7280;
    --line: #e5e7eb;
    --radius: 14px;
    --radius-sm: 8px;
    --shadow-card: 0 1px 3px rgba(0, 0, 0, .06), 0 1px 2px rgba(0, 0, 0, .04);
    --shadow-lift: 0 10px 30px rgba(0, 0, 0, .12);
}

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

body {
    background: var(--bg);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--ink);
    -webkit-font-smoothing: antialiased;
}

.header {
    background: linear-gradient(135deg, #111827 0%, #030712 100%);
    color: white;
    padding: 34px 0;
}

.header .container-fluid {
    display: flex;
    align-items: center;
    gap: 18px;
}

.header-icon {
    width: 50px;
    height: 50px;
    flex-shrink: 0;
    border-radius: 14px;
    background: rgba(255, 255, 255, .1);
    border: 1px solid rgba(255, 255, 255, .14);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.35rem;
    color: var(--accent);
}

.header h1 {
    font-size: 1.5rem;
    font-weight: 800;
    margin: 0;
    letter-spacing: -.3px;
}

.header p {
    margin: 4px 0 0 0;
    opacity: .68;
    font-size: .88rem;
}

.tools-nav {
    background: var(--surface);
    border-bottom: 1px solid var(--line);
    position: relative;
}

.tools-nav .container-fluid {
    display: flex;
    gap: 6px;
    padding-top: 10px;
    padding-bottom: 10px;
    overflow-x: auto;
    white-space: nowrap;
}

.mega-menu-trigger {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 999px;
    font-size: .8rem;
    font-weight: 600;
    color: #fff;
    background: var(--accent);
    border: none;
    cursor: pointer;
    white-space: nowrap;
    margin-left: auto;
}

.mega-menu-trigger:hover {
    background: var(--accent-dark);
}

.mega-menu-panel {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--surface);
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow-lift);
    z-index: 500;
    max-height: 70vh;
    overflow-y: auto;
    padding: 20px 40px;
}

.mega-menu-panel.open {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 20px 24px;
}

.mega-tabs {
    grid-column: 1 / -1;
    display: flex;
    gap: 8px;
    padding-bottom: 14px;
    margin-bottom: 6px;
    border-bottom: 1px solid var(--line);
}

.mega-tab-btn {
    border: 1px solid var(--line);
    background: var(--surface);
    color: var(--ink-soft);
    font-size: .78rem;
    font-weight: 600;
    padding: 6px 14px;
    border-radius: 999px;
    cursor: pointer;
    transition: all .15s ease;
}

.mega-tab-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.mega-tab-btn.active {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}

.mega-empty {
    grid-column: 1 / -1;
    color: var(--ink-faint);
    font-size: .85rem;
    padding: 20px 0;
}

.mega-col-title {
    font-size: .85rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 8px;
    white-space: nowrap;
}

.mega-cat-label {
    font-size: .68rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .3px;
    color: var(--ink-faint);
    margin: 8px 0 3px;
}

.mega-template-link {
    display: block;
    font-size: .8rem;
    color: var(--ink-soft);
    text-decoration: none;
    padding: 3px 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.mega-template-link:hover {
    color: var(--accent);
    text-decoration: underline;
}

@media (max-width: 768px) {
    .mega-menu-panel {
        padding: 16px 20px;
    }
    .mega-menu-panel.open {
        grid-template-columns: 1fr 1fr;
    }
}

.tools-nav-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 999px;
    font-size: .8rem;
    font-weight: 600;
    color: var(--ink-soft);
    text-decoration: none;
    white-space: nowrap;
    transition: background .15s ease, color .15s ease;
}

.tools-nav-link:hover {
    background: var(--bg);
    color: var(--ink);
}

.tools-nav-link.active {
    background: var(--ink);
    color: #fff;
}

.main-container {
    display: grid;
    grid-template-columns: 70% 30%;
    gap: 16px;
    padding: 18px 0 40px;
    min-height: calc(100vh - 200px);
    align-items: start;
}

.left-panel, .right-panel {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 16px;
    box-shadow: var(--shadow-card);
}

.card-title {
    font-size: .9rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--ink);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}

.card-title .card-title-label {
    display: flex;
    align-items: center;
    gap: 9px;
}

.card-title i {
    color: var(--accent);
    font-size: 1.1rem;
}

.card-title .active-preset {
    font-size: .72rem;
    font-weight: 600;
    color: var(--accent);
    background: var(--accent-light);
    padding: 3px 10px;
    border-radius: 999px;
    display: none;
}

.card-title .active-preset.visible {
    display: inline-block;
}

.templates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
    gap: 7px;
}

.template-btn {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: 9px 6px;
    border: 1px solid var(--line);
    background: #fbfbfc;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: .72rem;
    font-weight: 600;
    color: var(--ink-soft);
    transition: all .15s ease;
}

.fav-star {
    position: absolute;
    top: 3px;
    right: 4px;
    line-height: 1;
    padding: 2px;
    cursor: pointer;
    transition: transform .15s ease;
}

.fav-star i {
    font-size: .72rem;
    color: var(--line);
}

.fav-star:hover {
    transform: scale(1.2);
}

.fav-star:hover i {
    color: #f5b301;
}

.template-btn.favorited .fav-star i {
    color: #f5b301;
}

.fav-filter-btn {
    color: #b45309;
}

.fav-filter-btn.active {
    background: #f5b301;
    color: #1c1917;
    border-color: #f5b301;
}

.template-btn > i {
    font-size: 1.05rem;
    color: var(--accent);
}

.template-btn:hover {
    border-color: var(--accent);
    background: var(--accent-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lift);
}

.template-btn.selected {
    border-color: var(--accent);
    background: var(--accent-light);
    color: var(--accent-dark);
}

.form-fields {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group.full {
    grid-column: 1 / -1;
}

.form-label {
    font-size: .74rem;
    font-weight: 700;
    color: var(--ink-soft);
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    gap: 6px;
    text-transform: uppercase;
    letter-spacing: .35px;
}

.form-label i {
    color: var(--accent);
    font-size: .88rem;
}

textarea, .form-select, .form-control {
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    padding: 6px 9px;
    font-size: .8rem;
    font-family: inherit;
    transition: all .15s ease;
    color: var(--ink);
    background: #fdfdfe;
}

textarea {
    min-height: 52px;
    max-height: 320px;
    overflow-y: auto;
    resize: vertical;
}

textarea::placeholder, .form-control::placeholder {
    color: var(--ink-faint);
}

textarea:focus, .form-select:focus, .form-control:focus {
    border-color: var(--accent);
    background: #ffffff;
    box-shadow: 0 0 0 3px var(--accent-light);
    outline: none;
}

.advanced-toggle {
    grid-column: 1 / -1;
    border: none;
    border-top: 1px solid var(--line);
    background: none;
    padding: 0;
    margin-top: 4px;
}

.advanced-toggle summary {
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    padding: 16px 0 4px 0;
}

.advanced-toggle summary::-webkit-details-marker {
    display: none;
}

.advanced-toggle-label {
    font-weight: 700;
    color: var(--ink);
    font-size: .88rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.advanced-toggle-label i {
    color: var(--accent);
}

.advanced-toggle-hint {
    font-size: .76rem;
    color: var(--ink-faint);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 6px;
}

.advanced-toggle-hint i {
    transition: transform .2s ease;
}

details[open] .advanced-toggle-hint i {
    transform: rotate(180deg);
}

.advanced-body {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    padding-top: 16px;
}

.advanced-body .form-group.full {
    grid-column: 1 / -1;
}

.btn {
    border: none;
    border-radius: var(--radius-sm);
    font-weight: 700;
    padding: 7px 12px;
    cursor: pointer;
    transition: all .15s ease;
    font-size: .8rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
    color: white;
    width: 100%;
    margin-top: 10px;
    padding: 9px 16px;
    font-size: .85rem;
    box-shadow: var(--shadow-lift);
}

.btn-primary:hover {
    transform: translateY(-1px);
    color: white;
}

.btn-success {
    background: #10b981;
    color: white;
    width: 100%;
    padding: 9px 16px;
    font-size: .85rem;
}

.btn-success:hover {
    background: #059669;
    transform: translateY(-1px);
    color: white;
}

.btn-outline-success, .btn-outline-warning, .btn-outline-danger {
    border: 1.5px solid;
    background: transparent;
    padding: 6px 10px;
    font-size: .75rem;
}

.btn-outline-success {
    color: #10b981;
    border-color: #10b981;
}

.btn-outline-success:hover {
    background: #10b981;
    color: white;
}

.btn-outline-warning {
    color: #d97706;
    border-color: #d97706;
}

.btn-outline-warning:hover {
    background: #d97706;
    color: white;
}

.btn-outline-danger {
    color: #dc2626;
    border-color: #dc2626;
}

.btn-outline-danger:hover {
    background: #dc2626;
    color: white;
}

.toolbar {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.toolbar-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

.toolbar-item {
    display: flex;
    flex-direction: column;
}

.toolbar-item label {
    font-weight: 700;
    font-size: .72rem;
    color: var(--ink-faint);
    text-transform: uppercase;
    letter-spacing: .5px;
    margin-bottom: 6px;
}

.input-group {
    display: flex;
    gap: 8px;
}

.input-group .form-control {
    flex: 1;
}

.input-group button {
    white-space: nowrap;
}

.result-box {
    background: var(--result-bg);
    color: var(--result-color);
    border-radius: var(--radius-sm);
    padding: 18px;
    font-family: 'JetBrains Mono', 'Courier New', monospace;
    font-size: .81rem;
    line-height: 1.65;
    white-space: pre-wrap;
    word-wrap: break-word;
    max-height: 320px;
    overflow-y: auto;
    overscroll-behavior: contain;
    flex-shrink: 0;
    border: 1px solid var(--result-border);
}

.prompt-offcanvas-trigger {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    width: 100%;
    padding: 14px 18px;
    border: 1px solid var(--line);
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow-card);
    color: var(--ink);
    font-weight: 700;
    font-size: .9rem;
    cursor: pointer;
    transition: all .15s ease;
}

.prompt-offcanvas-trigger i {
    color: var(--accent);
    margin-right: 8px;
}

.prompt-offcanvas-trigger:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.token-estimate-badge {
    font-size: .68rem;
    font-weight: 600;
    color: var(--ink-faint);
}

.offcanvas {
    --bs-offcanvas-width: 460px;
    background: var(--surface);
}

.offcanvas-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--ink);
}

.offcanvas-title i {
    color: var(--accent);
    margin-right: 6px;
}

.offcanvas-body {
    display: flex;
    flex-direction: column;
}

.offcanvas-body .result-box {
    flex: 1;
    max-height: none;
}

.result-actions {
    display: flex;
    gap: 8px;
    margin-top: 12px;
}

.result-actions .btn {
    margin-top: 0;
}

small {
    display: block;
    margin-top: 8px;
    color: var(--ink-faint);
    font-size: .76rem;
    line-height: 1.5;
}

footer {
    text-align: center;
    padding: 28px;
    color: var(--ink-faint);
    font-size: .82rem;
    border-top: 1px solid var(--line);
    margin-top: 8px;
}

.toast-stack {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 999;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.toast {
    background: #111827;
    color: #f9fafb;
    padding: 12px 18px;
    border-radius: var(--radius-sm);
    font-size: .85rem;
    font-weight: 600;
    box-shadow: var(--shadow-lift);
    display: flex;
    align-items: center;
    gap: 10px;
    opacity: 0;
    transform: translateY(8px);
    transition: all .2s ease;
}

.toast.show {
    opacity: 1;
    transform: translateY(0);
}

.toast i {
    color: #34d399;
}

.toast.toast-danger i {
    color: #f87171;
}

@media (max-width: 1200px) {
    .main-container {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 500px) {
    .offcanvas {
        --bs-offcanvas-width: 100%;
    }
}

@media (max-width: 768px) {
    .form-fields, .advanced-body, .toolbar-row {
        grid-template-columns: 1fr;
    }
    .header .container-fluid {
        gap: 12px;
    }
    .header h1 {
        font-size: 1.25rem;
    }
}

::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: var(--bg);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background: #b7bfcc;
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}


/* ── Historique des prompts générés ── */
.history-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-height: 260px;
    overflow-y: auto;
    overscroll-behavior: contain;
}

.history-item {
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    padding: 8px 10px;
    font-size: .76rem;
}

.history-item-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 4px;
    color: var(--ink-faint);
}

.history-item-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
    margin-bottom: 5px;
}

.history-item-tag {
    font-size: .66rem;
    font-weight: 700;
    color: var(--accent-dark);
    background: var(--accent-light);
    padding: 2px 8px;
    border-radius: 999px;
    white-space: nowrap;
}

.history-item-excerpt {
    color: var(--ink-soft);
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    max-height: 2.9em;
}

.history-item-actions {
    display: flex;
    gap: 12px;
    margin-top: 6px;
}

.history-item-actions button,
.history-item-actions a {
    background: none;
    border: none;
    color: var(--accent);
    font-size: .72rem;
    font-weight: 600;
    cursor: pointer;
    padding: 0;
    text-decoration: none;
}

.history-item-actions a:hover {
    text-decoration: underline;
}

.history-empty {
    color: var(--ink-faint);
    font-size: .78rem;
    text-align: center;
    padding: 12px 0;
}

/* ── Estimation de longueur ── */
.token-estimate {
    font-size: .72rem;
    font-weight: 500;
    color: var(--ink-faint);
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    flex-shrink: 0;
}

/* ── Galerie de templates : recherche + catégories ── */
.gallery-categories {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 12px;
}

.gallery-category-btn {
    border: 1px solid var(--line);
    background: var(--surface);
    color: var(--ink-soft);
    font-size: .72rem;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 999px;
    cursor: pointer;
    transition: all .15s ease;
}

.gallery-category-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.gallery-category-btn.active {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}

.template-btn.hidden-by-filter {
    display: none;
}

.gallery-empty {
    color: var(--ink-faint);
    font-size: .8rem;
    text-align: center;
    padding: 16px 0;
    grid-column: 1 / -1;
}

/* ── Envoyer vers un assistant IA ── */
.send-ai-group {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.btn-send-ai {
    flex: 1;
    background: var(--surface);
    border: 1.5px solid var(--line);
    color: var(--ink-soft);
    padding: 6px 10px;
    font-size: .75rem;
}

.btn-send-ai:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: var(--accent-light);
}

/* ── Export / import des configurations ── */
.config-io {
    display: flex;
    gap: 6px;
    margin-top: 8px;
}

.config-io .btn {
    flex: 1;
    margin-top: 0;
}