@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
    --bg-body: #f8fafc;
    --bg-surface: #ffffff;
    --bg-surface-hover: #f1f5f9;
    --bg-card: #ffffff;
    --bg-sidebar: #ffffff;
    --bg-input: #ffffff;
    --text-main: #0f172a;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    --border-focus: #3b82f6;
    
    --primary: #4f46e5;
    --primary-hover: #4338ca;
    --primary-light: #eef2ff;
    --primary-text: #ffffff;
    
    --secondary: #64748b;
    --secondary-hover: #475569;
    
    --success: #10b981;
    --success-light: #ecfdf5;
    --danger: #ef4444;
    --danger-light: #fef2f2;
    --warning: #f59e0b;
    --warning-light: #fffbeb;
    --info: #0ea5e9;
    --info-light: #f0f9ff;
    
    --canvas-bg: #f1f5f9;
    --canvas-grid: #cbd5e1;
    --table-bg: #ffffff;
    --table-border: #cbd5e1;
    --table-header: #f8fafc;
    --table-row-hover: #f8fafc;
    --font-mono: 'JetBrains Mono', monospace;
    
    --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.08);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.12), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.15), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
    --bg-body: #0b0f19;
    --bg-surface: #111827;
    --bg-surface-hover: #1f2937;
    --bg-card: #131b2e;
    --bg-sidebar: #0f172a;
    --bg-input: #1e293b;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --border-color: #1e293b;
    --border-focus: #6366f1;
    
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --primary-light: rgba(99, 102, 241, 0.15);
    --primary-text: #ffffff;
    
    --canvas-bg: #090d16;
    --canvas-grid: #1e293b;
    --table-bg: #111827;
    --table-border: #1e293b;
    --table-header: #151d30;
    --table-row-hover: #1c263c;
    
    --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.4);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.5);
    --shadow-lg: 0 10px 20px -3px rgb(0 0 0 / 0.6);
    --shadow-xl: 0 20px 30px -5px rgb(0 0 0 / 0.7);
}

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

body {
    font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-body);
    color: var(--text-main);
    line-height: 1.5;
    font-size: 14px;
    transition: background-color 0.25s ease, color 0.25s ease;
    overflow-x: hidden;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--primary-hover);
}

/* Tipografía */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    color: var(--text-main);
}

/* Botones */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    user-select: none;
    white-space: nowrap;
    text-decoration: none;
}

.btn:active {
    transform: scale(0.98);
}

.btn-primary {
    background-color: var(--primary);
    color: var(--primary-text);
    border-color: var(--primary);
    box-shadow: 0 1px 2px 0 rgba(79, 70, 229, 0.3);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    border-color: var(--primary-hover);
    color: #ffffff;
}

.btn-secondary {
    background-color: var(--bg-surface);
    color: var(--text-main);
    border-color: var(--border-color);
}

.btn-secondary:hover {
    background-color: var(--bg-surface-hover);
    border-color: var(--border-color);
}

.btn-danger {
    background-color: var(--danger);
    color: #ffffff;
}

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

.btn-icon {
    padding: 0.5rem;
    border-radius: var(--radius-md);
}

.btn-sm {
    padding: 0.25rem 0.6rem;
    font-size: 0.775rem;
}

/* Formularios */
.form-group {
    margin-bottom: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.form-label {
    font-size: 0.825rem;
    font-weight: 500;
    color: var(--text-muted);
}

.form-control {
    width: 100%;
    padding: 0.6rem 0.85rem;
    font-size: 0.875rem;
    font-family: inherit;
    background-color: var(--bg-input);
    color: var(--text-main);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: var(--transition);
    outline: none;
}

.form-control:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

/* Tarjetas */
.card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: var(--transition);
}

.card:hover {
    box-shadow: var(--shadow-md);
}

/* Insignias */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.2rem 0.55rem;
    font-size: 0.725rem;
    font-weight: 600;
    border-radius: 9999px;
    letter-spacing: 0.025em;
    text-transform: uppercase;
}

.badge-primary { background: var(--primary-light); color: var(--primary); }
.badge-success { background: var(--success-light); color: var(--success); }
.badge-warning { background: var(--warning-light); color: var(--warning); }
.badge-danger { background: var(--danger-light); color: var(--danger); }
.badge-info { background: var(--info-light); color: var(--info); }

/* Modales */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.65);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.25s ease;
}

.modal-backdrop.active {
    opacity: 1;
    visibility: visible;
}

.modal-container {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-xl);
    transform: translateY(15px) scale(0.98);
    transition: var(--transition);
    overflow: hidden;
}

.modal-backdrop.active .modal-container {
    transform: translateY(0) scale(1);
}

.modal-header {
    padding: 1.25rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border-color);
}

.modal-body {
    padding: 1.5rem;
    overflow-y: auto;
}

.modal-footer {
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 0.75rem;
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-body);
}

/* Alertas */
.alert {
    padding: 0.85rem 1.15rem;
    border-radius: var(--radius-md);
    margin-bottom: 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.875rem;
}
.alert-danger {
    background-color: var(--danger-light);
    color: var(--danger);
    border: 1px solid rgba(239, 68, 68, 0.2);
}
.alert-success {
    background-color: var(--success-light);
    color: var(--success);
    border: 1px solid rgba(16, 185, 129, 0.2);
}
.alert-warning {
    background-color: var(--warning-light);
    color: #b45309;
    border: 1px solid rgba(245, 158, 11, 0.2);
}

/* Dashboard Layout */
.dashboard-layout {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.navbar {
    height: 64px;
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.5rem;
    position: sticky;
    top: 0;
    z-index: 50;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-main);
}

.brand-icon {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, #6366f1 0%, #3b82f6 100%);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
}

.navbar-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.dashboard-container {
    max-width: 1280px;
    margin: 2rem auto;
    padding: 0 1.5rem;
    width: 100%;
}

.diagrams-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.diagram-card {
    display: flex;
    flex-direction: column;
    position: relative;
    border-radius: var(--radius-lg);
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.diagram-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary);
}

.diagram-card-preview {
    height: 140px;
    background: var(--canvas-bg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.preview-grid-pattern {
    position: absolute;
    inset: 0;
    background-image: radial-gradient(var(--canvas-grid) 1px, transparent 1px);
    background-size: 14px 14px;
    opacity: 0.6;
}

.diagram-card-body {
    padding: 1.25rem;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.diagram-card-footer {
    padding: 0.85rem 1.25rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--bg-body);
}