/**
 * LTM DocAI - Stylesheet
 * LITIM Corporate Design - Hell, Stahlblau/Grau
 */

:root {
    --primary: #ffffff;
    --primary-light: #f8fafc;
    --secondary: #e8eef3;
    --accent: #4a6d8c;
    --accent-light: #5d8ab4;
    --accent-dark: #3a5a75;
    --steel: #7a9bb8;
    --text: #1e3a50;
    --text-muted: #5a7a94;
    --card-bg: #ffffff;
    --card-border: #d1dce5;
    --success: #3d9970;
    --warning: #f0ad4e;
    --danger: #d9534f;
    --info: #5bc0de;
    --gradient: linear-gradient(135deg, #4a6d8c 0%, #5d8ab4 50%, #7a9bb8 100%);
    --gradient-light: linear-gradient(135deg, #e8eef3 0%, #f0f5f9 100%);
    --shadow-sm: 0 1px 3px rgba(74, 109, 140, 0.08);
    --shadow-md: 0 4px 12px rgba(74, 109, 140, 0.1);
    --shadow-lg: 0 10px 30px rgba(74, 109, 140, 0.15);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--primary-light);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
}

a { color: var(--accent); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent-dark); }

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

/* Sidebar */
.sidebar {
    width: 260px;
    background: var(--primary);
    border-right: 1px solid var(--card-border);
    position: fixed;
    top: 0; left: 0; bottom: 0;
    display: flex;
    flex-direction: column;
    z-index: 100;
}

.sidebar-header { padding: 1.5rem; border-bottom: 1px solid var(--card-border); }

.logo { display: flex; align-items: center; gap: 0.75rem; text-decoration: none; }

.logo-icon {
    width: 40px; height: 40px;
    background: var(--gradient);
    border-radius: var(--radius-md);
    display: flex; align-items: center; justify-content: center;
    color: white; font-weight: 700; font-size: 1.1rem;
}

.logo-text { display: flex; flex-direction: column; line-height: 1.2; }
.logo-text strong { font-size: 1.1rem; color: var(--text); }
.logo-text span { font-size: 0.7rem; color: var(--text-muted); letter-spacing: 0.05em; text-transform: uppercase; }

.sidebar-nav { flex: 1; padding: 1rem 0; overflow-y: auto; }
.nav-section { margin-bottom: 1.5rem; }
.nav-section-title { padding: 0.5rem 1.5rem; font-size: 0.7rem; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.05em; }

.nav-item {
    display: flex; align-items: center; gap: 0.75rem;
    padding: 0.75rem 1.5rem;
    color: var(--text-muted); font-weight: 500; font-size: 0.95rem;
    transition: var(--transition);
    border-left: 3px solid transparent;
}
.nav-item:hover { background: var(--secondary); color: var(--text); }
.nav-item.active { background: var(--gradient-light); color: var(--accent); border-left-color: var(--accent); }
.nav-item-icon { width: 20px; text-align: center; }
.nav-item-badge { margin-left: auto; background: var(--accent); color: white; font-size: 0.7rem; font-weight: 600; padding: 0.2rem 0.5rem; border-radius: 10px; }

.sidebar-footer { padding: 1rem 1.5rem; border-top: 1px solid var(--card-border); }
.user-info { display: flex; align-items: center; gap: 0.75rem; }
.user-avatar { width: 36px; height: 36px; background: var(--gradient); border-radius: 50%; display: flex; align-items: center; justify-content: center; color: white; font-weight: 600; font-size: 0.9rem; }
.user-details { flex: 1; min-width: 0; }
.user-name { font-weight: 600; font-size: 0.9rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.user-role { font-size: 0.75rem; color: var(--text-muted); }

/* Main Content */
.main-content { flex: 1; margin-left: 260px; padding: 2rem; }

.page-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 2rem; }
.page-title { font-size: 1.75rem; font-weight: 700; color: var(--text); }
.page-subtitle { color: var(--text-muted); font-size: 0.95rem; margin-top: 0.25rem; }

/* Buttons */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
    padding: 0.75rem 1.5rem; border-radius: var(--radius-md);
    font-weight: 600; font-size: 0.95rem; cursor: pointer; border: none;
    transition: var(--transition); text-decoration: none;
}
.btn-primary { background: var(--gradient); color: white; box-shadow: var(--shadow-md); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); color: white; }
.btn-secondary { background: var(--secondary); color: var(--text); border: 1px solid var(--card-border); }
.btn-secondary:hover { background: var(--card-border); }
.btn-outline { background: transparent; border: 2px solid var(--accent); color: var(--accent); }
.btn-outline:hover { background: var(--accent); color: white; }
.btn-danger { background: var(--danger); color: white; }
.btn-danger:hover { background: #c9302c; }
.btn-sm { padding: 0.5rem 1rem; font-size: 0.85rem; }
.btn-lg { padding: 1rem 2rem; font-size: 1.1rem; }

/* Cards */
.card { background: var(--card-bg); border: 1px solid var(--card-border); border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); }
.card-header { padding: 1.25rem 1.5rem; border-bottom: 1px solid var(--card-border); display: flex; justify-content: space-between; align-items: center; }
.card-title { font-size: 1.1rem; font-weight: 600; color: var(--text); }
.card-body { padding: 1.5rem; }
.card-footer { padding: 1rem 1.5rem; border-top: 1px solid var(--card-border); background: var(--primary-light); border-radius: 0 0 var(--radius-lg) var(--radius-lg); }

/* Stats Cards */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1.5rem; margin-bottom: 2rem; }
.stat-card { background: var(--card-bg); border: 1px solid var(--card-border); border-radius: var(--radius-lg); padding: 1.5rem; box-shadow: var(--shadow-sm); }
.stat-card-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 0.75rem; }
.stat-card-icon { width: 40px; height: 40px; background: var(--gradient-light); border-radius: var(--radius-md); display: flex; align-items: center; justify-content: center; font-size: 1.25rem; }
.stat-card-value { font-size: 2rem; font-weight: 700; color: var(--text); line-height: 1; }
.stat-card-label { font-size: 0.85rem; color: var(--text-muted); margin-top: 0.25rem; }

/* Forms */
.form-group { margin-bottom: 1.25rem; }
.form-label { display: block; font-size: 0.85rem; font-weight: 600; color: var(--text); margin-bottom: 0.5rem; }
.form-input, .form-select, .form-textarea {
    width: 100%; padding: 0.75rem 1rem;
    border: 1px solid var(--card-border); border-radius: var(--radius-md);
    font-size: 0.95rem; color: var(--text); background: var(--primary);
    transition: var(--transition);
}
.form-input:focus, .form-select:focus, .form-textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(74, 109, 140, 0.15); }
.form-textarea { min-height: 120px; resize: vertical; }
.form-help { font-size: 0.8rem; color: var(--text-muted); margin-top: 0.25rem; }

/* Upload Area */
.upload-area {
    border: 2px dashed var(--card-border); border-radius: var(--radius-lg);
    padding: 3rem 2rem; text-align: center;
    transition: var(--transition); cursor: pointer; background: var(--primary);
}
.upload-area:hover, .upload-area.dragover { border-color: var(--accent); background: var(--gradient-light); }
.upload-icon { width: 80px; height: 80px; margin: 0 auto 1.5rem; background: var(--gradient-light); border: 1px solid var(--card-border); border-radius: var(--radius-lg); display: flex; align-items: center; justify-content: center; font-size: 2rem; }
.upload-title { font-size: 1.25rem; font-weight: 600; margin-bottom: 0.5rem; }
.upload-subtitle { color: var(--text-muted); margin-bottom: 1.5rem; }

/* Tables */
.table-container { overflow-x: auto; }
.table { width: 100%; border-collapse: collapse; }
.table th, .table td { padding: 1rem; text-align: left; border-bottom: 1px solid var(--card-border); }
.table th { font-size: 0.75rem; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.05em; background: var(--primary-light); }
.table tr:hover td { background: var(--gradient-light); }
.table td { font-size: 0.9rem; }

/* Badges */
.badge { display: inline-flex; align-items: center; padding: 0.25rem 0.75rem; border-radius: 100px; font-size: 0.75rem; font-weight: 600; }
.badge-success { background: rgba(61, 153, 112, 0.15); color: var(--success); }
.badge-warning { background: rgba(240, 173, 78, 0.15); color: var(--warning); }
.badge-danger { background: rgba(217, 83, 79, 0.15); color: var(--danger); }
.badge-info { background: rgba(91, 192, 222, 0.15); color: var(--info); }
.badge-secondary { background: var(--secondary); color: var(--text-muted); }

/* Alerts */
.alert { padding: 1rem 1.5rem; border-radius: var(--radius-md); margin-bottom: 1rem; display: flex; align-items: flex-start; gap: 0.75rem; }
.alert-success { background: rgba(61, 153, 112, 0.1); border: 1px solid rgba(61, 153, 112, 0.3); color: var(--success); }
.alert-warning { background: rgba(240, 173, 78, 0.1); border: 1px solid rgba(240, 173, 78, 0.3); color: #946b00; }
.alert-danger { background: rgba(217, 83, 79, 0.1); border: 1px solid rgba(217, 83, 79, 0.3); color: var(--danger); }
.alert-info { background: rgba(91, 192, 222, 0.1); border: 1px solid rgba(91, 192, 222, 0.3); color: #31708f; }

/* Spinner */
.spinner { width: 40px; height: 40px; border: 3px solid var(--card-border); border-top-color: var(--accent); border-radius: 50%; animation: spin 1s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.loading-overlay { position: fixed; inset: 0; background: rgba(255, 255, 255, 0.9); display: flex; align-items: center; justify-content: center; z-index: 1000; }

/* Document Preview */
.document-preview { display: grid; grid-template-columns: 1fr 350px; gap: 1.5rem; height: calc(100vh - 200px); min-height: 500px; }
.pdf-viewer { background: var(--secondary); border-radius: var(--radius-lg); overflow: hidden; display: flex; align-items: center; justify-content: center; }
.pdf-viewer iframe, .pdf-viewer embed { width: 100%; height: 100%; border: none; }

.extraction-panel { background: var(--card-bg); border: 1px solid var(--card-border); border-radius: var(--radius-lg); overflow: hidden; display: flex; flex-direction: column; }
.extraction-header { padding: 1rem 1.25rem; background: var(--gradient); color: white; }
.extraction-header h3 { font-size: 1rem; font-weight: 600; }
.extraction-body { flex: 1; overflow-y: auto; padding: 1.25rem; }
.extraction-field { background: var(--primary-light); border: 1px solid var(--card-border); border-radius: var(--radius-md); padding: 0.75rem 1rem; margin-bottom: 0.75rem; }
.extraction-field-label { font-size: 0.7rem; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.03em; margin-bottom: 0.25rem; }
.extraction-field-value { font-weight: 600; color: var(--accent); font-size: 0.95rem; }
.extraction-footer { padding: 1rem 1.25rem; border-top: 1px solid var(--card-border); background: var(--primary-light); }

/* Confidence */
.confidence-bar { height: 6px; background: var(--secondary); border-radius: 3px; overflow: hidden; margin-top: 0.5rem; }
.confidence-fill { height: 100%; border-radius: 3px; transition: width 0.5s ease; }
.confidence-high { background: var(--success); }
.confidence-medium { background: var(--warning); }
.confidence-low { background: var(--danger); }

/* Modal */
.modal-overlay { position: fixed; inset: 0; background: rgba(30, 58, 80, 0.5); display: flex; align-items: center; justify-content: center; z-index: 1000; opacity: 0; visibility: hidden; transition: var(--transition); }
.modal-overlay.active { opacity: 1; visibility: visible; }
.modal { background: var(--card-bg); border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); width: 100%; max-width: 500px; max-height: 90vh; overflow: hidden; transform: translateY(20px); transition: var(--transition); }
.modal-overlay.active .modal { transform: translateY(0); }
.modal-header { padding: 1.25rem 1.5rem; border-bottom: 1px solid var(--card-border); display: flex; justify-content: space-between; align-items: center; }
.modal-title { font-size: 1.1rem; font-weight: 600; }
.modal-close { background: none; border: none; font-size: 1.5rem; color: var(--text-muted); cursor: pointer; line-height: 1; }
.modal-close:hover { color: var(--text); }
.modal-body { padding: 1.5rem; overflow-y: auto; max-height: 60vh; }
.modal-footer { padding: 1rem 1.5rem; border-top: 1px solid var(--card-border); display: flex; justify-content: flex-end; gap: 0.75rem; background: var(--primary-light); }

/* Empty State */
.empty-state { text-align: center; padding: 4rem 2rem; }
.empty-state-icon { width: 80px; height: 80px; margin: 0 auto 1.5rem; background: var(--gradient-light); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 2rem; }
.empty-state-title { font-size: 1.25rem; font-weight: 600; margin-bottom: 0.5rem; }
.empty-state-text { color: var(--text-muted); margin-bottom: 1.5rem; }

/* Login Page */
.login-page { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: var(--gradient-light); }
.login-card { width: 100%; max-width: 420px; background: var(--card-bg); border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); overflow: hidden; }
.login-header { padding: 2rem; text-align: center; background: var(--gradient); color: white; }
.login-header h1 { font-size: 1.5rem; font-weight: 700; }
.login-body { padding: 2rem; }

/* Setup Wizard */
.setup-page { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: var(--gradient-light); padding: 2rem; }
.setup-card { width: 100%; max-width: 600px; background: var(--card-bg); border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); overflow: hidden; }
.setup-header { padding: 2rem; text-align: center; background: var(--gradient); color: white; }
.setup-header h1 { font-size: 1.75rem; font-weight: 700; margin-bottom: 0.5rem; }
.setup-header p { opacity: 0.9; }
.setup-body { padding: 2rem; }
.setup-step { display: none; }
.setup-step.active { display: block; }
.setup-progress { display: flex; justify-content: center; gap: 0.5rem; margin-bottom: 2rem; }
.setup-progress-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--card-border); }
.setup-progress-dot.active { background: var(--accent); }
.setup-progress-dot.completed { background: var(--success); }
.check-item { display: flex; align-items: center; gap: 0.75rem; padding: 0.75rem 0; border-bottom: 1px solid var(--card-border); }
.check-item:last-child { border-bottom: none; }
.check-icon { width: 24px; height: 24px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 0.8rem; }
.check-icon.success { background: rgba(61, 153, 112, 0.15); color: var(--success); }
.check-icon.error { background: rgba(217, 83, 79, 0.15); color: var(--danger); }
.check-icon.pending { background: var(--secondary); color: var(--text-muted); }

/* Responsive */
@media (max-width: 1024px) {
    .sidebar { transform: translateX(-100%); transition: var(--transition); }
    .sidebar.open { transform: translateX(0); }
    .main-content { margin-left: 0; }
    .document-preview { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .page-header { flex-direction: column; align-items: flex-start; gap: 1rem; }
}

/* Utilities */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--text-muted); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.d-flex { display: flex; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }
.hidden { display: none !important; }