/* 
 * Engratech Design System 2025
 * Enterprise-grade UI components
 * Version: 1.0.0
 */

/* ========================================
   1. CSS Variables & Theme
   ======================================== */
:root {
    /* Primary Colors - Corporate Blue Palette Engratech */
    --color-primary-900: #0A1F37;
    --color-primary-800: #0F2E51;
    --color-primary-700: #143E6E;
    --color-primary-600: #143E6E;
    --color-primary-500: #143E6E;
    --color-primary-400: #1A4F8B;
    --color-primary-300: #2B6199;
    --color-primary-200: #5B84B1;
    --color-primary-100: #8BA6C7;
    --color-primary-50: #E8EDF4;
    
    /* Neutral Colors */
    --color-neutral-900: #111827;
    --color-neutral-800: #1F2937;
    --color-neutral-700: #374151;
    --color-neutral-600: #4B5563;
    --color-neutral-500: #6B7280;
    --color-neutral-400: #9CA3AF;
    --color-neutral-300: #D1D5DB;
    --color-neutral-200: #E5E7EB;
    --color-neutral-100: #F3F4F6;
    --color-neutral-50: #F9FAFB;
    --color-white: #FFFFFF;
    
    /* Semantic Colors */
    --color-success-600: #059669;
    --color-success-500: #10B981;
    --color-success-100: #D1FAE5;
    --color-warning-600: #D97706;
    --color-warning-500: #F59E0B;
    --color-warning-100: #FEF3C7;
    --color-danger-600: #DC2626;
    --color-danger-500: #EF4444;
    --color-danger-100: #FEE2E2;
    --color-info-600: #143E6E;
    --color-info-500: #1A4F8B;
    --color-info-100: #E8EDF4;
    
    /* Typography */
    --font-family-base: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
    --font-family-mono: 'IBM Plex Mono', 'Consolas', monospace;
    
    /* Font Sizes - Mobile First */
    --font-size-xs: 0.75rem;    /* 12px */
    --font-size-sm: 0.875rem;   /* 14px */
    --font-size-base: 1rem;     /* 16px */
    --font-size-lg: 1.125rem;   /* 18px */
    --font-size-xl: 1.25rem;    /* 20px */
    --font-size-2xl: 1.5rem;    /* 24px */
    --font-size-3xl: 1.875rem;  /* 30px */
    --font-size-4xl: 2.25rem;   /* 36px */
    
    /* Font Weights */
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    /* Line Heights */
    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;
    
    /* Spacing Scale */
    --space-1: 0.25rem;  /* 4px */
    --space-2: 0.5rem;   /* 8px */
    --space-3: 0.75rem;  /* 12px */
    --space-4: 1rem;     /* 16px */
    --space-5: 1.25rem;  /* 20px */
    --space-6: 1.5rem;   /* 24px */
    --space-8: 2rem;     /* 32px */
    --space-10: 2.5rem;  /* 40px */
    --space-12: 3rem;    /* 48px */
    --space-16: 4rem;    /* 64px */
    
    /* Border Radius */
    --radius-sm: 0.25rem;    /* 4px */
    --radius-base: 0.5rem;   /* 8px */
    --radius-lg: 0.75rem;    /* 12px */
    --radius-xl: 1rem;       /* 16px */
    --radius-2xl: 1.5rem;    /* 24px */
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-base: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Z-Index Scale */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

/* Dark Theme (future-ready) */
[data-theme="dark"] {
    --color-primary-50: #0C1D3D;
    --color-primary-100: #13294B;
    --color-neutral-50: #111827;
    --color-neutral-100: #1F2937;
    --color-white: #111827;
}

/* ========================================
   2. Base Styles & Reset
   ======================================== */
*, *::before, *::after {
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    margin: 0;
    padding: 0;
    font-family: var(--font-family-base);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-normal);
    color: var(--color-neutral-900);
    background-color: var(--color-neutral-50);
}

/* ========================================
   3. Typography
   ======================================== */
h1, h2, h3, h4, h5, h6 {
    margin: 0 0 var(--space-4) 0;
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-tight);
    color: var(--color-primary-900);
}

h1 { font-size: var(--font-size-3xl); }
h2 { font-size: var(--font-size-2xl); }
h3 { font-size: var(--font-size-xl); }
h4 { font-size: var(--font-size-lg); }
h5 { font-size: var(--font-size-base); }
h6 { font-size: var(--font-size-sm); }

p {
    margin: 0 0 var(--space-4) 0;
    color: var(--color-neutral-700);
}

.text-sm { font-size: var(--font-size-sm); }
.text-lg { font-size: var(--font-size-lg); }
.text-xl { font-size: var(--font-size-xl); }

.text-muted { color: var(--color-neutral-500); }
.text-primary { color: var(--color-primary-600); }
.text-success { color: var(--color-success-600); }
.text-warning { color: var(--color-warning-600); }
.text-danger { color: var(--color-danger-600); }

/* ========================================
   4. Layout Components
   ======================================== */

/* Container */
.container {
    width: 100%;
    max-width: 100%;
    margin: 0 auto;
    padding: 0 var(--space-4);
}

/* Grid System */
.grid {
    display: grid;
    gap: var(--space-4);
}

.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }

/* Flexbox Utilities */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: var(--space-2); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }

/* ========================================
   5. Card Component
   ======================================== */
.card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: var(--space-6);
    transition: all var(--transition-base);
    border: 1px solid var(--color-neutral-200);
}

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

.card-header {
    margin-bottom: var(--space-4);
    padding-bottom: var(--space-4);
    border-bottom: 1px solid var(--color-neutral-200);
}

.card-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary-900);
    margin: 0;
}

.card-subtitle {
    font-size: var(--font-size-sm);
    color: var(--color-neutral-500);
    margin-top: var(--space-2);
}

.card-body {
    color: var(--color-neutral-700);
}

.card-footer {
    margin-top: var(--space-6);
    padding-top: var(--space-4);
    border-top: 1px solid var(--color-neutral-200);
}

/* Card Variants */
.card-primary {
    border-color: var(--color-primary-200);
    background: var(--color-primary-50);
}

.card-glass {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

/* ========================================
   6. Button Component
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-family: var(--font-family-base);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    line-height: 1;
    text-decoration: none;
    border: 2px solid transparent;
    border-radius: var(--radius-base);
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

.btn:focus {
    outline: none;
}

.btn:focus-visible {
    outline: 2px solid var(--color-primary-500);
    outline-offset: 2px;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Button Sizes */
.btn-sm {
    padding: var(--space-2) var(--space-4);
    font-size: var(--font-size-sm);
}

.btn-lg {
    padding: var(--space-4) var(--space-8);
    font-size: var(--font-size-lg);
    border-radius: var(--radius-lg);
}

/* Button Variants */
.btn-primary {
    background-color: var(--color-primary-600);
    color: var(--color-white);
}

.btn-primary:hover:not(:disabled) {
    background-color: var(--color-primary-700);
    transform: translateY(-1px);
    box-shadow: var(--shadow-base);
}

.btn-primary:active:not(:disabled) {
    transform: translateY(0);
}

.btn-secondary {
    background-color: var(--color-white);
    color: var(--color-primary-600);
    border-color: var(--color-primary-200);
}

.btn-secondary:hover:not(:disabled) {
    background-color: var(--color-primary-50);
    border-color: var(--color-primary-300);
}

.btn-ghost {
    background-color: transparent;
    color: var(--color-primary-600);
}

.btn-ghost:hover:not(:disabled) {
    background-color: var(--color-primary-50);
}

.btn-danger {
    background-color: var(--color-danger-500);
    color: var(--color-white);
}

.btn-danger:hover:not(:disabled) {
    background-color: var(--color-danger-600);
}

/* Button with Icon */
.btn-icon {
    padding: var(--space-3);
}

.btn svg {
    width: 20px;
    height: 20px;
}

/* Botão Nova Denúncia - Padrão Engratech */
.btn-nova-denuncia {
    background: #2563EB;
    color: var(--color-white);
    border: none;
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-base);
    text-decoration: none;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    transition: all var(--transition-base);
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    box-shadow: 0 2px 4px rgba(37, 99, 235, 0.2);
}

.btn-nova-denuncia:hover {
    background: #1D4ED8;
    box-shadow: 0 4px 8px rgba(37, 99, 235, 0.3);
    transform: translateY(-1px);
    color: var(--color-white);
}

/* ========================================
   7. Form Components
   ======================================== */
.form-group {
    margin-bottom: var(--space-6);
}

.form-label {
    display: block;
    margin-bottom: var(--space-2);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-primary-900);
}

.form-label-required::after {
    content: " *";
    color: var(--color-danger-500);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    font-family: var(--font-family-base);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--color-neutral-900);
    background-color: var(--color-white);
    border: 2px solid var(--color-neutral-300);
    border-radius: var(--radius-base);
    transition: all var(--transition-base);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-primary-500);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--color-neutral-400);
}

.form-textarea {
    min-height: 120px;
    resize: vertical;
}

.form-help {
    margin-top: var(--space-2);
    font-size: var(--font-size-sm);
    color: var(--color-neutral-500);
}

.form-error {
    margin-top: var(--space-2);
    font-size: var(--font-size-sm);
    color: var(--color-danger-600);
}

/* Input Groups */
.input-group {
    position: relative;
    display: flex;
    align-items: stretch;
}

.input-group-prepend,
.input-group-append {
    display: flex;
    align-items: center;
    padding: 0 var(--space-4);
    background-color: var(--color-neutral-100);
    border: 2px solid var(--color-neutral-300);
    color: var(--color-neutral-600);
}

.input-group-prepend {
    border-right: 0;
    border-radius: var(--radius-base) 0 0 var(--radius-base);
}

.input-group-append {
    border-left: 0;
    border-radius: 0 var(--radius-base) var(--radius-base) 0;
}

.input-group .form-input {
    border-radius: 0;
}

.input-group .form-input:first-child {
    border-radius: var(--radius-base) 0 0 var(--radius-base);
}

.input-group .form-input:last-child {
    border-radius: 0 var(--radius-base) var(--radius-base) 0;
}

/* ========================================
   8. Alert Component
   ======================================== */
.alert {
    position: relative;
    padding: var(--space-4);
    border-radius: var(--radius-base);
    border: 1px solid;
    margin-bottom: var(--space-4);
}

.alert-title {
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-2);
}

.alert-description {
    font-size: var(--font-size-sm);
}

/* Alert Variants */
.alert-info {
    background-color: var(--color-info-100);
    border-color: var(--color-info-500);
    color: var(--color-info-600);
}

.alert-success {
    background-color: var(--color-success-100);
    border-color: var(--color-success-500);
    color: var(--color-success-600);
}

.alert-warning {
    background-color: var(--color-warning-100);
    border-color: var(--color-warning-500);
    color: var(--color-warning-600);
}

.alert-danger {
    background-color: var(--color-danger-100);
    border-color: var(--color-danger-500);
    color: var(--color-danger-600);
}

/* ========================================
   9. Badge Component
   ======================================== */
.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-1) var(--space-3);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    line-height: 1;
    border-radius: var(--radius-full);
    white-space: nowrap;
}

.badge-primary {
    background-color: var(--color-primary-100);
    color: var(--color-primary-700);
}

.badge-success {
    background-color: var(--color-success-100);
    color: var(--color-success-700);
}

.badge-warning {
    background-color: var(--color-warning-100);
    color: var(--color-warning-700);
}

.badge-danger {
    background-color: var(--color-danger-100);
    color: var(--color-danger-700);
}

/* ========================================
   10. Header Component
   ======================================== */
.header-enterprise {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 64px;
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-neutral-200);
    box-shadow: var(--shadow-xs);
    z-index: var(--z-sticky);
}

.header-content {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--space-4);
}

.header-brand {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    text-decoration: none;
}

.header-logo {
    width: auto;
    height: 40px;
    background: transparent;
    border-radius: 0;
    display: block;
    box-shadow: none;
    object-fit: contain;
}

.header-logo svg {
    width: auto;
    height: auto;
    fill: currentColor;
}

.header-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary-900);
    margin: 0;
}

.header-subtitle {
    font-size: var(--font-size-xs);
    color: var(--color-neutral-500);
    margin: 0;
}

.header-security {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background-color: var(--color-success-100);
    color: var(--color-success-700);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
}

.header-security svg {
    width: 16px;
    height: 16px;
    fill: currentColor;
}

/* ========================================
   11. Main Layout
   ======================================== */
.main-content {
    margin-top: 64px;
    min-height: calc(100vh - 64px);
    background-color: var(--color-neutral-50);
}

.page-container {
    padding: var(--space-6) var(--space-4);
}

/* ========================================
   12. Responsive Design
   ======================================== */

/* Tablet (768px and up) */
@media (min-width: 768px) {
    /* Typography */
    h1 { font-size: var(--font-size-4xl); }
    h2 { font-size: var(--font-size-3xl); }
    h3 { font-size: var(--font-size-2xl); }
    
    /* Container */
    .container {
        padding: 0 var(--space-6);
    }
    
    /* Grid */
    .md\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .md\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    
    /* Card */
    .card {
        padding: var(--space-8);
    }
    
    /* Header */
    .header-enterprise {
        height: 72px;
    }
    
    .header-logo {
        width: 48px;
        height: 48px;
    }
    
    .header-logo svg {
        width: 28px;
        height: 28px;
    }
    
    .header-title {
        font-size: var(--font-size-xl);
    }
    
    .header-subtitle {
        font-size: var(--font-size-sm);
    }
    
    /* Main */
    .main-content {
        margin-top: 72px;
        min-height: calc(100vh - 72px);
    }
    
    .page-container {
        padding: var(--space-8) var(--space-6);
    }
}

/* Desktop (1024px and up) */
@media (min-width: 1024px) {
    /* Container */
    .container {
        padding: 0 var(--space-8);
    }
    
    /* Grid */
    .lg\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .lg\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
    
    /* Page Container */
    .page-container {
        padding: var(--space-10) var(--space-8);
    }
}

/* ========================================
   13. Footer Component
   ======================================== */
.footer-enterprise {
    background-color: var(--color-primary-900);
    color: var(--color-white);
    padding: var(--space-8) 0;
    margin-top: auto;
}

.footer-content {
    text-align: center;
}

.footer-text {
    font-size: var(--font-size-sm);
    color: var(--color-neutral-300);
    margin-bottom: var(--space-4);
}

.footer-links {
    display: flex;
    gap: var(--space-6);
    justify-content: center;
    flex-wrap: wrap;
}

.footer-link {
    color: var(--color-neutral-300);
    text-decoration: none;
    font-size: var(--font-size-sm);
    transition: color var(--transition-base);
}

.footer-link:hover {
    color: var(--color-white);
    text-decoration: underline;
}

/* ========================================
   14. Loading States
   ======================================== */
.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--color-primary-200);
    border-top-color: var(--color-primary-600);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.btn-loading {
    position: relative;
    color: transparent !important;
    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 var(--color-white);
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* ========================================
   15. Utility Classes
   ======================================== */

/* Spacing */
.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }

/* Text Alignment */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

/* Display */
.d-none { display: none; }
.d-block { display: block; }
.d-flex { display: flex; }

/* Flexbox */
.flex-column { flex-direction: column; }
.flex-1 { flex: 1; }

/* Width */
.w-100 { width: 100%; }
.w-auto { width: auto; }

/* Height */
.h-100 { height: 100%; }
.min-h-screen { min-height: 100vh; }

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

/* Focus Visible */
*:focus {
    outline: none;
}

*:focus-visible {
    outline: 2px solid var(--color-primary-500);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}