/* ============================================================
   DESIGN SYSTEM - GSA SoftEng
   Token Central para Consistência Visual em Toda a Aplicação
   ============================================================ */

:root {
    /* ===== COLOR PALETTE ===== */
    --color-primary-50: #eff6ff;
    --color-primary-100: #dbeafe;
    --color-primary-200: #bfdbfe;
    --color-primary-300: #93c5fd;
    --color-primary-400: #60a5fa;
    --color-primary-500: #3b82f6;
    --color-primary-600: #2563eb;
    --color-primary-700: #1e40af;
    --color-primary-800: #1e3a8a;
    --color-primary-900: #172554;

    --color-blue-gradient: linear-gradient(135deg, #1e3a8a 0%, #2d5a8c 100%);
    --color-blue-gradient-light: linear-gradient(135deg, #3b82f6 0%, #60a5fa 100%);
    --color-blue-gradient-dark: linear-gradient(135deg, #1e40af 0%, #1e3a8a 100%);

    --color-secondary-50: #f0f9ff;
    --color-secondary-100: #e0f2fe;
    --color-secondary-200: #bae6fd;
    --color-secondary-300: #7dd3fc;
    --color-secondary-400: #38bdf8;
    --color-secondary-500: #0ea5e9;
    --color-secondary-600: #0284c7;
    --color-secondary-700: #0369a1;
    --color-secondary-800: #075985;
    --color-secondary-900: #0c4a6e;

    --color-success-50: #f0fdf4;
    --color-success-100: #dcfce7;
    --color-success-200: #bbf7d0;
    --color-success-300: #86efac;
    --color-success-400: #4ade80;
    --color-success-500: #22c55e;
    --color-success-600: #16a34a;
    --color-success-700: #15803d;
    --color-success-800: #166534;
    --color-success-900: #145231;

    --color-warning-50: #fffbeb;
    --color-warning-100: #fef3c7;
    --color-warning-200: #fde68a;
    --color-warning-300: #fcd34d;
    --color-warning-400: #fbbf24;
    --color-warning-500: #f59e0b;
    --color-warning-600: #d97706;
    --color-warning-700: #b45309;
    --color-warning-800: #92400e;
    --color-warning-900: #78350f;

    --color-error-50: #fef2f2;
    --color-error-100: #fee2e2;
    --color-error-200: #fecaca;
    --color-error-300: #fca5a5;
    --color-error-400: #f87171;
    --color-error-500: #ef4444;
    --color-error-600: #dc2626;
    --color-error-700: #b91c1c;
    --color-error-800: #991b1b;
    --color-error-900: #7f1d1d;

    --color-gray-50: #f9fafb;
    --color-gray-100: #f3f4f6;
    --color-gray-200: #e5e7eb;
    --color-gray-300: #d1d5db;
    --color-gray-400: #9ca3af;
    --color-gray-500: #6b7280;
    --color-gray-600: #4b5563;
    --color-gray-700: #374151;
    --color-gray-800: #1f2937;
    --color-gray-900: #111827;

    --color-white: #ffffff;
    --color-black: #000000;

    /* ===== SEMANTIC COLORS ===== */
    --color-text-primary: #111827;
    --color-text-secondary: #6b7280;
    --color-text-tertiary: #9ca3af;
    --color-text-inverse: #ffffff;

    --color-background-primary: #ffffff;
    --color-background-secondary: #f9fafb;
    --color-background-tertiary: #f3f4f6;
    --color-background-overlay: rgba(0, 0, 0, 0.5);

    --color-border-light: #e5e7eb;
    --color-border-medium: #d1d5db;
    --color-border-dark: #9ca3af;

    /* ===== TYPOGRAPHY ===== */
    --font-family-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-family-secondary: 'Ibrand', Arial, sans-serif;
    --font-family-mono: 'Fira Code', monospace;

    /* Font Sizes */
    --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-size-5xl: 3rem;
    /* 48px */
    --font-size-6xl: 3.75rem;
    /* 60px */

    /* Font Weights */
    --font-weight-thin: 100;
    --font-weight-extralight: 200;
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    --font-weight-black: 900;

    /* Line Heights */
    --line-height-none: 1;
    --line-height-tight: 1.25;
    --line-height-snug: 1.375;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.625;
    --line-height-loose: 2;

    /* Letter Spacing */
    --letter-spacing-tighter: -0.05em;
    --letter-spacing-tight: -0.025em;
    --letter-spacing-normal: 0em;
    --letter-spacing-wide: 0.025em;
    --letter-spacing-wider: 0.05em;
    --letter-spacing-widest: 0.1em;

    /* ===== SPACING ===== */
    --spacing-0: 0;
    --spacing-1: 0.25rem;
    /* 4px */
    --spacing-2: 0.5rem;
    /* 8px */
    --spacing-3: 0.75rem;
    /* 12px */
    --spacing-4: 1rem;
    /* 16px */
    --spacing-5: 1.25rem;
    /* 20px */
    --spacing-6: 1.5rem;
    /* 24px */
    --spacing-7: 1.75rem;
    /* 28px */
    --spacing-8: 2rem;
    /* 32px */
    --spacing-9: 2.25rem;
    /* 36px */
    --spacing-10: 2.5rem;
    /* 40px */
    --spacing-12: 3rem;
    /* 48px */
    --spacing-14: 3.5rem;
    /* 56px */
    --spacing-16: 4rem;
    /* 64px */
    --spacing-20: 5rem;
    /* 80px */
    --spacing-24: 6rem;
    /* 96px */
    --spacing-28: 7rem;
    /* 112px */
    --spacing-32: 8rem;
    /* 128px */

    /* ===== BORDER RADIUS ===== */
    --radius-none: 0;
    --radius-sm: 0.25rem;
    /* 4px */
    --radius-base: 0.375rem;
    /* 6px */
    --radius-md: 0.5rem;
    /* 8px */
    --radius-lg: 0.75rem;
    /* 12px */
    --radius-xl: 1rem;
    /* 16px */
    --radius-2xl: 1.5rem;
    /* 24px */
    --radius-3xl: 2rem;
    /* 32px */
    --radius-full: 9999px;
    /* Fully rounded */

    /* ===== SHADOWS ===== */
    --shadow-none: none;
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
    --shadow-base: 0 4px 6px rgba(0, 0, 0, 0.1), 0 2px 4px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 10px 15px rgba(0, 0, 0, 0.1), 0 4px 6px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 20px 25px rgba(0, 0, 0, 0.1), 0 10px 10px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 25px 50px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px rgba(0, 0, 0, 0.25);

    /* Color Shadows */
    --shadow-primary: 0 4px 15px rgba(30, 58, 138, 0.15);
    --shadow-secondary: 0 4px 15px rgba(8, 145, 178, 0.15);

    /* ===== TRANSITIONS ===== */
    --transition-duration-fast: 150ms;
    --transition-duration-base: 200ms;
    --transition-duration-slow: 300ms;
    --transition-duration-slower: 500ms;

    --transition-timing-ease: ease;
    --transition-timing-ease-in: ease-in;
    --transition-timing-ease-out: ease-out;
    --transition-timing-ease-in-out: ease-in-out;
    --transition-timing-linear: linear;
    --transition-timing-cubic: cubic-bezier(0.4, 0, 0.2, 1);

    --transition-fast: all var(--transition-duration-fast) var(--transition-timing-ease);
    --transition-base: all var(--transition-duration-base) var(--transition-timing-ease);
    --transition-slow: all var(--transition-duration-slow) var(--transition-timing-ease);
    --transition-slower: all var(--transition-duration-slower) var(--transition-timing-ease);

    /* ===== Z-INDEX ===== */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-offcanvas-backdrop: 1040;
    --z-offcanvas: 1050;
    --z-modal-backdrop: 1060;
    --z-modal: 1070;
    --z-popover: 1080;
    --z-tooltip: 1090;

    /* ===== BREAKPOINTS ===== */
    --breakpoint-xs: 0;
    --breakpoint-sm: 576px;
    --breakpoint-md: 768px;
    --breakpoint-lg: 992px;
    --breakpoint-xl: 1200px;
    --breakpoint-2xl: 1400px;

    /* ===== CONTAINER ===== */
    --container-width: 1200px;
    --container-padding: 1rem;
    --container-padding-sm: 0.75rem;
    --container-padding-lg: 1.5rem;

    /* ===== VIEWPORT UTILITIES ===== */
    --vh-100: 100vh;
    --vh-50: 50vh;
    --vw-100: 100vw;
    --vw-50: 50vw;
}

/* ===== RESPONSIVE ADJUSTMENTS ===== */
@media (max-width: 768px) {
    :root {
        --font-size-5xl: 2.25rem;
        --font-size-4xl: 1.875rem;
        --font-size-3xl: 1.5rem;
        --container-padding: var(--spacing-4);
    }
}

/* ===== HIGH CONTRAST MODE SUPPORT ===== */
@media (prefers-contrast: more) {
    :root {
        --color-text-primary: #000000;
        --color-text-secondary: #333333;
        --color-border-light: #999999;
    }
}

/* ===== DARK MODE SUPPORT (Future) ===== */
@media (prefers-color-scheme: dark) {
    :root {
        --color-text-primary: #f9fafb;
        --color-text-secondary: #d1d5db;
        --color-background-primary: #111827;
        --color-background-secondary: #1f2937;
        --color-background-tertiary: #374151;
        --color-border-light: #4b5563;
    }
}

/* ===== UTILITY CLASSES ===== */

/* Text Colors */
.text-primary {
    color: var(--color-text-primary);
}

.text-secondary {
    color: var(--color-text-secondary);
}

.text-tertiary {
    color: var(--color-text-tertiary);
}

/* Background Colors */
.bg-primary {
    background-color: var(--color-primary-500);
}

.bg-secondary {
    background-color: var(--color-secondary-500);
}

.bg-light {
    background-color: var(--color-gray-50);
}

.bg-white {
    background-color: var(--color-white);
}

/* Gradients */
.bg-gradient-primary {
    background: var(--color-blue-gradient);
}

.bg-gradient-light {
    background: var(--color-blue-gradient-light);
}

.bg-gradient-dark {
    background: var(--color-blue-gradient-dark);
}

/* Spacing Utilities */
.p-1 {
    padding: var(--spacing-1);
}

.p-2 {
    padding: var(--spacing-2);
}

.p-3 {
    padding: var(--spacing-3);
}

.p-4 {
    padding: var(--spacing-4);
}

.p-6 {
    padding: var(--spacing-6);
}

.p-8 {
    padding: var(--spacing-8);
}

.px-4 {
    padding-left: var(--spacing-4);
    padding-right: var(--spacing-4);
}

.py-8 {
    padding-top: var(--spacing-8);
    padding-bottom: var(--spacing-8);
}

.m-0 {
    margin: 0;
}

.mb-4 {
    margin-bottom: var(--spacing-4);
}

.mb-6 {
    margin-bottom: var(--spacing-6);
}

.mb-8 {
    margin-bottom: var(--spacing-8);
}

.mt-8 {
    margin-top: var(--spacing-8);
}

/* Display Utilities */
.flex {
    display: flex;
}

.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.flex-wrap {
    flex-wrap: wrap;
}

.gap-4 {
    gap: var(--spacing-4);
}

.gap-8 {
    gap: var(--spacing-8);
}

.grid {
    display: grid;
}

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

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

/* Shadows */
.shadow-sm {
    box-shadow: var(--shadow-sm);
}

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

.shadow-lg {
    box-shadow: var(--shadow-lg);
}

.shadow-primary {
    box-shadow: var(--shadow-primary);
}

/* Border Radius */
.rounded-md {
    border-radius: var(--radius-md);
}

.rounded-lg {
    border-radius: var(--radius-lg);
}

.rounded-xl {
    border-radius: var(--radius-xl);
}

.rounded-full {
    border-radius: var(--radius-full);
}

/* Text Utilities */
.text-center {
    text-align: center;
}

.font-medium {
    font-weight: var(--font-weight-medium);
}

.font-semibold {
    font-weight: var(--font-weight-semibold);
}

.font-bold {
    font-weight: var(--font-weight-bold);
}

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

.text-base {
    font-size: var(--font-size-base);
}

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

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

.text-2xl {
    font-size: var(--font-size-2xl);
}

/* Transitions */
.transition-base {
    transition: var(--transition-base);
}

.transition-slow {
    transition: var(--transition-slow);
}

/* Visibility */
.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;
}