:root {
    --bg-dark: #0f1115;
    --bg-panel: rgba(255, 255, 255, 0.03);
    --bg-panel-hover: rgba(255, 255, 255, 0.05);
    --border-color: rgba(255, 255, 255, 0.1);
    --text-primary: #ffffff;
    --text-secondary: #94a3b8;
    --accent: #6366f1;
    --accent-hover: #4f46e5;
    --danger: #ef4444;
    --success: #10b981;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

/* Mobile Header */
.mobile-header {
    display: none;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    background: rgba(15, 17, 21, 0.95);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 90;
}
.mobile-header .logo {
    margin-bottom: 0;
    padding: 0;
}

/* Glassmorphism Panel */
.glass-panel {
    background: var(--bg-panel);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
}

.app-container {
    display: flex;
    height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 250px;
    background: rgba(15, 17, 21, 0.8);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 20px 0;
    backdrop-filter: blur(20px);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 0 24px;
    margin-bottom: 40px;
    color: var(--text-primary);
}

.logo i {
    font-size: 24px;
    color: var(--accent);
}

.menu {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 0 16px;
    flex-grow: 1;
}

.menu-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 12px 16px;
    text-align: left;
    border-radius: 8px;
    cursor: pointer;
    font-size: 15px;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: all 0.2s ease;
}

.menu-btn:hover {
    background: var(--bg-panel);
    color: var(--text-primary);
}

.menu-btn.active {
    background: var(--accent);
    color: white;
}

.user-profile {
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.user-info i {
    font-size: 20px;
    color: var(--text-secondary);
}

.user-info input {
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 14px;
    outline: none;
    width: 100%;
}

/* Main Content */
.main-content {
    flex-grow: 1;
    padding: 40px;
    overflow-y: auto;
}

header {
    margin-bottom: 30px;
}

header h1 {
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 8px;
    background: linear-gradient(135deg, #fff, #94a3b8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

header p {
    color: var(--text-secondary);
    font-size: 15px;
}

/* Tab Management */
.tab-content {
    display: none;
    animation: fadeIn 0.4s ease forwards;
}

.tab-content.active {
    display: block;
}

/* VQA Layout */
.vqa-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

/* Upload Area */
.input-section {
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.upload-area {
    width: 100%;
    height: 250px;
    border: 2px dashed var(--border-color);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    overflow: hidden;
    position: relative;
    background: rgba(0,0,0,0.2);
}

.upload-area:hover {
    border-color: var(--accent);
    background: rgba(99, 102, 241, 0.05);
}

.upload-placeholder {
    text-align: center;
    color: var(--text-secondary);
}

.upload-placeholder i {
    font-size: 48px;
    margin-bottom: 16px;
    color: var(--accent);
}

#image-preview {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hidden {
    display: none !important;
}

/* Controls */
.controls {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.control-group label {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 8px;
}

select, input[type="text"] {
    width: 100%;
    background: rgba(0,0,0,0.3);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 14px;
    outline: none;
    transition: border-color 0.2s;
}

select:focus, input[type="text"]:focus {
    border-color: var(--accent);
}

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

.input-wrapper input {
    flex-grow: 1;
}

.icon-btn {
    background: rgba(0,0,0,0.3);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    width: 44px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
}

.icon-btn:hover {
    background: var(--bg-panel-hover);
    color: var(--accent);
}

.primary-btn {
    background: var(--accent);
    color: white;
    border: none;
    padding: 14px;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.2s;
    margin-top: 8px;
}

.primary-btn:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

.primary-btn:disabled {
    background: #334155;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* Results Section */
.output-section {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.result-card {
    padding: 20px;
    border-left: 4px solid var(--accent);
}

.result-card h3 {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.result-card p {
    font-size: 15px;
    line-height: 1.6;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in {
    opacity: 0;
    animation: fadeIn 0.5s ease forwards;
}

.delay-1 { animation-delay: 0.2s; }
.delay-2 { animation-delay: 0.4s; }

/* Loading Spinner */
#loading-indicator {
    padding: 40px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    height: 100%;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    border-top-color: var(--accent);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Typewriter Effect Container */
.typewriter-container {
    min-height: 24px;
}

/* Toggle Switch */
.switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 26px;
}

.switch input { opacity: 0; width: 0; height: 0; }

.slider {
    position: absolute;
    cursor: pointer;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: var(--border-color);
    transition: .4s;
    border-radius: 34px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 20px;
    width: 20px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: var(--success);
}

input:checked + .slider:before {
    transform: translateX(24px);
}

/* Analytics Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    padding: 24px;
    text-align: center;
}

.stat-card h3 {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.stat-value {
    font-size: 32px;
    font-weight: 700;
    color: var(--accent);
}

.chart-container {
    padding: 24px;
    height: 400px;
}

/* Admin Grid */
.admin-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

.admin-card {
    padding: 24px;
}

.admin-card h3 {
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}

.setting-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.danger-btn {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger);
    border: 1px solid var(--danger);
    padding: 10px 16px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.2s;
}

.danger-btn:hover {
    background: var(--danger);
    color: white;
}

/* Logs Table */
.table-container {
    overflow-x: auto;
}

.logs-table {
    width: 100%;
    border-collapse: collapse;
}

.logs-table th, .logs-table td {
    padding: 14px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    font-size: 14px;
}

.logs-table th {
    color: var(--text-secondary);
    font-weight: 500;
}

.filter-bar {
    margin-bottom: 16px;
}

.filter-bar input {
    width: 300px;
}

/* Suggestions Grid */
.suggestions-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    margin-top: 20px;
}

.sug-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-primary);
    cursor: pointer;
    font-size: 14px;
    text-align: left;
    transition: all 0.2s ease;
}

.sug-card:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
    border-color: rgba(255, 255, 255, 0.2);
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

.sug-card i {
    font-size: 20px;
}

/* Responsive */
@media (max-width: 900px) {
    .suggestions-grid {
        grid-template-columns: 1fr;
    }
    
    .app-container {
        flex-direction: column;
    }
    
    .mobile-header {
        display: flex;
    }

    .vqa-container {
        grid-template-columns: 1fr;
    }
    
    .sidebar {
        position: fixed;
        left: -250px;
        top: 0;
        height: 100vh;
        z-index: 100;
        transition: left 0.3s;
        box-shadow: 5px 0 15px rgba(0,0,0,0.5);
    }
    
    .sidebar.open {
        left: 0;
    }
    
    .main-content {
        padding: 15px;
    }
    
    /* Login fix for mobile */
    .login-box {
        margin: 20px;
        padding: 30px 20px;
    }
}