/**
 * SmartOLT - Global Styles
 * Shared styles, CSS variables, and reusable components
 */

/* ===============================================
   CSS VARIABLES - Design System
   =============================================== */
:root {
    /* Colors - Primary */
    --color-primary: #3b82f6;
    --color-primary-dark: #2563eb;
    --color-primary-light: #60a5fa;
    --color-primary-alpha: rgba(59, 130, 246, 0.1);
    
    /* Colors - Secondary */
    --color-secondary: #667eea;
    --color-secondary-dark: #764ba2;
    
    /* Colors - Status */
    --color-success: #48bb78;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    --color-info: #3b82f6;
    
    /* Colors - Neutral Dark */
    --color-dark-900: #0f172a;
    --color-dark-800: #1e293b;
    --color-dark-700: #334155;
    --color-dark-600: #475569;
    
    /* Colors - Neutral Light */
    --color-light-100: #f1f5f9;
    --color-light-200: #e2e8f0;
    --color-light-300: #cbd5e1;
    --color-light-400: #94a3b8;
    --color-light-500: #64748b;
    
    /* Background Colors */
    --bg-primary: rgba(255, 255, 255, 0.03);
    --bg-secondary: rgba(255, 255, 255, 0.05);
    --bg-tertiary: rgba(15, 23, 42, 0.4);
    --bg-blur: rgba(255, 255, 255, 0.1);
    
    /* Border */
    --border-color: rgba(255, 255, 255, 0.1);
    --border-color-light: rgba(255, 255, 255, 0.05);
    
    /* Shadows */
    --shadow-sm: 0 4px 20px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.3);
    --shadow-primary: 0 4px 20px rgba(59, 130, 246, 0.25);
    --shadow-primary-lg: 0 4px 20px rgba(59, 130, 246, 0.35);
    
    /* Spacing */
    --spacing-xs: 8px;
    --spacing-sm: 12px;
    --spacing-md: 16px;
    --spacing-lg: 22px;
    --spacing-xl: 30px;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 14px;
    --radius-xl: 16px;
    --radius-2xl: 20px;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'Courier New', monospace;
    
    /* Transitions */
    --transition-fast: all 0.2s ease;
    --transition-normal: all 0.3s ease;
}

/* ===============================================
   RESET & BASE STYLES
   =============================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    color: var(--color-light-100);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===============================================
   UTILITY CLASSES
   =============================================== */
.hidden {
    display: none !important;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

/* ===============================================
   BUTTONS
   =============================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: var(--transition-fast);
    outline: none;
}

.btn:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: white;
    box-shadow: var(--shadow-primary);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-primary-lg);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    color: var(--color-light-200);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.07);
}

.btn-danger {
    background: rgba(239, 68, 68, 0.12);
    border: 1px solid rgba(239, 68, 68, 0.25);
    color: #fecaca;
}

.btn-danger:hover {
    background: rgba(239, 68, 68, 0.18);
}

.btn-success {
    background: rgba(72, 187, 120, 0.12);
    border: 1px solid rgba(72, 187, 120, 0.25);
    color: #9ae6b4;
}

.btn-success:hover {
    background: rgba(72, 187, 120, 0.18);
}

.btn-small {
    padding: 6px 12px;
    font-size: 12px;
}

.btn-loading {
    position: relative;
    color: transparent;
    pointer-events: none;
}

.btn-loading::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    top: 50%;
    left: 50%;
    margin-left: -8px;
    margin-top: -8px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

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

/* ===============================================
   CARDS
   =============================================== */
.card {
    background: var(--bg-primary);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
}

.card-header {
    padding-bottom: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}

/* ===============================================
   FORMS
   =============================================== */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-size: 14px;
    font-weight: 500;
    color: var(--color-light-200);
}

.form-input,
.form-select {
    width: 100%;
    padding: var(--spacing-md);
    font-size: 15px;
    background: var(--bg-tertiary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    color: var(--color-light-100);
    outline: none;
    transition: var(--transition-fast);
    font-family: var(--font-family);
}

.form-input:focus,
.form-select:focus {
    border-color: var(--color-primary);
    background: rgba(15, 23, 42, 0.8);
    box-shadow: 0 0 0 4px var(--color-primary-alpha);
}

.form-input.is-valid {
    border-color: var(--color-success);
}

.form-input.is-invalid {
    border-color: var(--color-error);
}

.form-feedback {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: 13px;
}

.form-feedback.success {
    color: var(--color-success);
}

.form-feedback.error {
    color: var(--color-error);
}

/* ===============================================
   BADGES
   =============================================== */
.badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}

.badge-primary {
    background: rgba(59, 130, 246, 0.2);
    color: #93c5fd;
}

.badge-success {
    background: rgba(72, 187, 120, 0.2);
    color: #9ae6b4;
}

.badge-warning {
    background: rgba(245, 158, 11, 0.2);
    color: #fde68a;
}

.badge-danger {
    background: rgba(239, 68, 68, 0.2);
    color: #fecaca;
}

.badge-admin {
    background: #667eea;
    color: white;
}

.badge-tecnico {
    background: #48bb78;
    color: white;
}

.badge-consulta {
    background: #ed8936;
    color: white;
}

/* ===============================================
   ALERTS
   =============================================== */
.alert {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.alert-info {
    background: rgba(59, 130, 246, 0.12);
    border: 1px solid rgba(59, 130, 246, 0.25);
    color: #93c5fd;
}

.alert-success {
    background: rgba(72, 187, 120, 0.12);
    border: 1px solid rgba(72, 187, 120, 0.25);
    color: #9ae6b4;
}

.alert-warning {
    background: rgba(245, 158, 11, 0.12);
    border: 1px solid rgba(245, 158, 11, 0.25);
    color: #fde68a;
}

.alert-error {
    background: rgba(239, 68, 68, 0.12);
    border: 1px solid rgba(239, 68, 68, 0.25);
    color: #fecaca;
}

/* ===============================================
   TOAST NOTIFICATIONS
   =============================================== */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.toast {
    min-width: 300px;
    padding: var(--spacing-md);
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    animation: slideInRight 0.3s ease;
}

.toast.toast-success {
    border-left: 4px solid var(--color-success);
}

.toast.toast-error {
    border-left: 4px solid var(--color-error);
}

.toast.toast-info {
    border-left: 4px solid var(--color-info);
}

.toast-icon {
    font-size: 20px;
    flex-shrink: 0;
}

.toast-content {
    flex: 1;
}

.toast-title {
    font-weight: 600;
    margin-bottom: 2px;
}

.toast-message {
    font-size: 13px;
    color: var(--color-light-400);
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* ===============================================
   LOADING SPINNER
   =============================================== */
.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

.spinner-lg {
    width: 40px;
    height: 40px;
    border-width: 4px;
}

/* ===============================================
   TABLES
   =============================================== */
.table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius-md);
    background: var(--bg-tertiary);
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

thead {
    background: var(--color-primary-alpha);
}

th {
    padding: 14px 16px;
    text-align: left;
    font-weight: 800;
    color: #93c5fd;
    text-transform: uppercase;
    font-size: 12px;
    letter-spacing: 0.5px;
    border-bottom: 1px solid var(--border-color);
}

td {
    padding: 16px;
    color: var(--color-light-200);
    vertical-align: top;
    border-bottom: 1px solid var(--border-color-light);
}

tbody tr {
    transition: var(--transition-fast);
}

tbody tr:hover {
    background: var(--color-primary-alpha);
}

/* ===============================================
   RESPONSIVE
   =============================================== */
@media (max-width: 768px) {
    :root {
        --spacing-lg: 18px;
        --spacing-xl: 24px;
    }
    
    .toast-container {
        left: 20px;
        right: 20px;
    }
    
    .toast {
        min-width: auto;
    }
}