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

:root {
    --bg: #0b0b14;
    --bg-card: #141428;
    --bg-card-hover: #1a1a35;
    --bg-input: #1c1c38;
    --border: #2a2a4a;
    --border-focus: #6c5ce7;
    --accent: #6c5ce7;
    --accent-hover: #7d6ff0;
    --accent-glow: rgba(108, 92, 231, 0.3);
    --text: #e0e0f0;
    --text-dim: #8a8aaa;
    --text-bright: #ffffff;
    --danger: #e74c3c;
    --danger-hover: #f06050;
    --success: #00d2a0;
    --warning: #f0a030;
    --radius: 10px;
    --radius-sm: 6px;
    --radius-lg: 16px;
    --shadow: 0 4px 24px rgba(0,0,0,0.4);
    --shadow-glow: 0 0 30px var(--accent-glow);
    --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --font: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

body { font-family: var(--font); background: var(--bg); color: var(--text); min-height: 100vh; overflow-x: hidden; }

.login-page {
    display: flex; align-items: center; justify-content: center; min-height: 100vh;
    background: radial-gradient(ellipse at center, #1a1a40 0%, #0b0b14 70%);
}

.login-container { width: 100%; max-width: 400px; padding: 20px; }
.login-card {
    background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg);
    padding: 40px 32px; text-align: center; box-shadow: var(--shadow);
}
.login-icon { color: var(--accent); margin-bottom: 16px; }
.login-card h1 { font-size: 24px; color: var(--text-bright); margin-bottom: 4px; }
.login-subtitle { color: var(--text-dim); font-size: 14px; margin-bottom: 24px; }
.login-form { display: flex; flex-direction: column; gap: 16px; }

/* === Top Nav === */
.top-nav {
    position: fixed; top: 0; left: 0; right: 0; height: 56px;
    background: rgba(20, 20, 40, 0.85); backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border); display: flex; align-items: center;
    padding: 0 20px; z-index: 100; gap: 12px;
}
.hamburger {
    background: none; border: none; cursor: pointer; padding: 6px;
    display: flex; flex-direction: column; gap: 5px; width: 32px; height: 24px;
    justify-content: center; align-items: center; border-radius: var(--radius-sm);
    transition: var(--transition);
}
.hamburger:hover { background: var(--bg-input); }
.hamburger span { display: block; width: 20px; height: 2px; background: var(--text); border-radius: 2px; transition: var(--transition); }
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.nav-title { font-weight: 700; color: var(--accent); font-size: 16px; }
.nav-view-name { color: var(--text-dim); font-size: 13px; margin-left: 8px; }
.btn-logout { margin-left: auto; }

/* === Sidebar === */
.sidebar {
    position: fixed; top: 56px; left: -260px; width: 260px; bottom: 0;
    background: var(--bg-card); border-right: 1px solid var(--border);
    z-index: 99; transition: left var(--transition); padding: 16px 0;
}
.sidebar.open { left: 0; }
.sidebar-header { display: flex; align-items: center; gap: 10px; padding: 0 20px 16px; border-bottom: 1px solid var(--border); }
.sidebar-logo { color: var(--accent); }
.sidebar-header span { font-weight: 700; color: var(--text-bright); }
.sidebar-nav { padding: 8px; }
.sidebar-link {
    display: flex; align-items: center; gap: 12px; width: 100%; padding: 12px 16px;
    background: none; border: none; color: var(--text-dim); font-size: 14px;
    cursor: pointer; border-radius: var(--radius-sm); transition: var(--transition);
    text-align: left; font-family: var(--font);
}
.sidebar-link:hover { background: var(--bg-input); color: var(--text); }
.sidebar-link.active { background: var(--accent); color: #fff; }
.overlay {
    position: fixed; inset: 0; background: rgba(0,0,0,0.5); z-index: 98;
    opacity: 0; pointer-events: none; transition: opacity var(--transition);
}
.overlay.show { opacity: 1; pointer-events: auto; }

/* === Main Content === */
.main-content { padding: 72px 24px 40px; max-width: 1100px; margin: 0 auto; }
.view { display: none; animation: fadeSlideIn 0.3s ease; }
.view.active { display: block; }
@keyframes fadeSlideIn { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: translateY(0); } }

.view-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 24px; }
.view-header h2 { font-size: 22px; color: var(--text-bright); font-weight: 700; }

/* === Buttons === */
.btn {
    display: inline-flex; align-items: center; gap: 6px; padding: 9px 18px;
    border-radius: var(--radius-sm); font-size: 14px; font-weight: 600; cursor: pointer;
    border: none; transition: var(--transition); font-family: var(--font); line-height: 1.4;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); box-shadow: var(--shadow-glow); }
.btn-accent { background: linear-gradient(135deg, #6c5ce7, #a763e8); color: #fff; }
.btn-accent:hover { opacity: 0.9; box-shadow: var(--shadow-glow); }
.btn-ghost { background: transparent; color: var(--text-dim); border: 1px solid var(--border); }
.btn-ghost:hover { color: var(--text); border-color: var(--text-dim); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: var(--danger-hover); }
.btn-full { width: 100%; justify-content: center; }
.btn-lg { padding: 14px 32px; font-size: 16px; border-radius: var(--radius); }
.btn-gen { width: 100%; margin-top: 12px; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* === Inputs === */
.input-group { display: flex; flex-direction: column; gap: 6px; }
.input-group label { font-size: 13px; color: var(--text-dim); font-weight: 500; }
.input-group input, .input-group textarea, .input-group select {
    background: var(--bg-input); border: 1px solid var(--border); border-radius: var(--radius-sm);
    padding: 10px 14px; color: var(--text); font-size: 14px; font-family: var(--font);
    transition: var(--transition); outline: none; resize: vertical;
}
.input-group input:focus, .input-group textarea:focus, .input-group select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-glow); }
.input-group select { cursor: pointer; }
.input-full { grid-column: 1 / -1; }

/* === Forms === */
.form-card {
    background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 24px; margin-bottom: 24px;
}
.form-card h3 { font-size: 16px; color: var(--text-bright); margin-bottom: 16px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-bottom: 14px; }
.form-actions { display: flex; gap: 10px; margin-top: 16px; }
.char-form-panel { margin-bottom: 24px; }

/* === Character List === */
.char-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; }
.char-card {
    background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 20px; cursor: pointer; transition: var(--transition); position: relative;
}
.char-card:hover { border-color: var(--accent); box-shadow: 0 0 20px rgba(108,92,231,0.1); }
.char-card.selected { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent); }
.char-card h3 { font-size: 16px; color: var(--text-bright); margin-bottom: 6px; }
.char-card .char-meta { font-size: 12px; color: var(--text-dim); display: flex; gap: 10px; flex-wrap: wrap; }
.char-card .char-desc { font-size: 13px; color: var(--text-dim); margin-top: 8px; line-height: 1.5; }
.char-card .char-img-count { font-size: 11px; color: var(--accent); margin-top: 8px; }
.char-card .btn-delete {
    position: absolute; top: 10px; right: 10px; background: none; border: none;
    color: var(--text-dim); cursor: pointer; padding: 4px 8px; border-radius: 4px;
    font-size: 18px; line-height: 1; transition: var(--transition);
}
.char-card .btn-delete:hover { color: var(--danger); background: rgba(231,76,60,0.1); }

/* === Empty State === */
.empty-state {
    text-align: center; padding: 60px 20px; color: var(--text-dim);
    grid-column: 1 / -1;
}
.empty-state p { margin-top: 12px; font-size: 14px; }

/* === Alert === */
.alert { padding: 10px 16px; border-radius: var(--radius-sm); font-size: 13px; }
.alert-error { background: rgba(231,76,60,0.15); color: var(--danger); border: 1px solid rgba(231,76,60,0.3); }

/* === Generate Panel === */
.generate-empty { text-align: center; padding: 60px 20px; color: var(--text-dim); }
.generate-empty p { margin-top: 8px; }
.generate-panel { max-width: 680px; margin: 0 auto; }
.gen-sections { display: flex; flex-direction: column; gap: 16px; margin-top: 20px; }
.gen-card {
    background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 20px; transition: var(--transition);
}
.gen-card:hover { border-color: var(--border-focus); }
.gen-card-header { display: flex; align-items: center; gap: 8px; margin-bottom: 12px; }
.gen-card-header h3 { font-size: 15px; color: var(--text-bright); }
.badge {
    font-size: 10px; background: var(--accent); color: #fff; padding: 2px 8px;
    border-radius: 10px; font-weight: 500; vertical-align: middle;
}
.prompt-input { width: 100%; min-height: 56px; }
.preset-select { width: 100%; }
.preset-checkboxes {
    display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 10px; max-height: 180px; overflow-y: auto;
}
.preset-checkboxes label {
    display: flex; align-items: center; gap: 6px; padding: 5px 10px;
    background: var(--bg-input); border: 1px solid var(--border); border-radius: 20px;
    font-size: 12px; color: var(--text-dim); cursor: pointer; transition: var(--transition);
    user-select: none; white-space: nowrap;
}
.preset-checkboxes label:hover { border-color: var(--accent); color: var(--text); }
.preset-checkboxes label.checked { background: var(--accent); color: #fff; border-color: var(--accent); }
.preset-checkboxes input[type="checkbox"] { display: none; }
.preset-actions { display: flex; gap: 6px; margin-bottom: 10px; }
.btn-sm { padding: 4px 12px; font-size: 12px; }
.gen-bulk { text-align: center; margin-top: 28px; padding: 20px; border-top: 1px solid var(--border); }
.gen-status { margin-top: 16px; text-align: center; padding: 12px; border-radius: var(--radius-sm); }
.gen-status.generating { background: rgba(108,92,231,0.1); color: var(--accent); }
.gen-status.done { background: rgba(0,210,160,0.1); color: var(--success); }
.gen-status.failed { background: rgba(231,76,60,0.1); color: var(--danger); }

.spinner {
    display: inline-block; width: 20px; height: 20px; border: 2px solid transparent;
    border-top-color: currentColor; border-radius: 50%; animation: spin 0.8s linear infinite;
    vertical-align: middle; margin-right: 8px;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* === Gallery === */
.gallery-filters { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 20px; flex-wrap: wrap; }
.gallery-filters .input-group { flex: 1; min-width: 180px; }
.tab-bar { display: flex; gap: 4px; background: var(--bg-input); padding: 4px; border-radius: var(--radius-sm); }
.tab {
    padding: 8px 18px; border: none; background: transparent; color: var(--text-dim);
    font-size: 13px; cursor: pointer; border-radius: 4px; font-family: var(--font);
    font-weight: 500; transition: var(--transition);
}
.tab:hover { color: var(--text); }
.tab.active { background: var(--accent); color: #fff; }
.gallery-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px; }
.gallery-card {
    background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
    overflow: hidden; cursor: pointer; transition: var(--transition);
}
.gallery-card:hover { border-color: var(--accent); transform: translateY(-2px); box-shadow: var(--shadow); }
.gallery-card img {
    width: 100%; aspect-ratio: 9/16; object-fit: cover; display: block;
    background: var(--bg-input);
}
.gallery-card-info { padding: 10px 14px; display: flex; align-items: center; justify-content: space-between; }
.gallery-card-info .gallery-type { font-size: 11px; color: var(--accent); font-weight: 600; }
.gallery-card-info .gallery-date { font-size: 11px; color: var(--text-dim); }
.gallery-dl-btn {
    background: none; border: 1px solid var(--border); color: var(--text-dim);
    cursor: pointer; padding: 5px 10px; border-radius: var(--radius-sm); font-size: 12px;
    transition: var(--transition);
}
.gallery-dl-btn:hover { border-color: var(--accent); color: var(--accent); }

/* === Toast === */
#toastContainer { position: fixed; bottom: 20px; right: 20px; z-index: 999; display: flex; flex-direction: column; gap: 8px; }
.toast {
    padding: 12px 20px; border-radius: var(--radius-sm); font-size: 14px; color: #fff;
    animation: slideInRight 0.3s ease; box-shadow: var(--shadow); max-width: 360px;
}
.toast-success { background: var(--success); }
.toast-error { background: var(--danger); }
.toast-info { background: var(--accent); }
@keyframes slideInRight { from { opacity: 0; transform: translateX(60px); } to { opacity: 1; transform: translateX(0); } }

/* === Image Modal === */
.image-modal {
    display: none; position: fixed; inset: 0; z-index: 200; background: rgba(0,0,0,0.9);
    align-items: center; justify-content: center;
}
.image-modal.show { display: flex; }
.image-modal img { max-width: 90vw; max-height: 90vh; border-radius: var(--radius-sm); box-shadow: var(--shadow); }
.modal-close {
    position: absolute; top: 20px; right: 30px; font-size: 36px; color: #fff;
    cursor: pointer; transition: var(--transition);
}
.modal-close:hover { color: var(--accent); }

/* === Responsive === */
@media (max-width: 640px) {
    .form-grid { grid-template-columns: 1fr; }
    .gen-sections { grid-template-columns: 1fr; }
    .gallery-grid { grid-template-columns: 1fr 1fr; }
    .gallery-filters { flex-direction: column; align-items: stretch; }
}