/**
 * Vagga.ai - CSS Variables (Design Tokens)
 * Arquivo base com variáveis reutilizáveis em todo o projeto
 */

:root {
    /* ========================================
       CORES PRIMÁRIAS
       ======================================== */
    --color-primary: #4f46e5;
    --color-primary-dark: #4338ca;
    --color-primary-light: #6366f1;
    --color-primary-lighter: #818cf8;
    --color-primary-bg: rgba(79, 70, 229, 0.1);
    --color-primary-border: rgba(79, 70, 229, 0.2);

    /* Roxo/Violet */
    --color-violet: #7c3aed;
    --color-violet-dark: #6d28d9;
    --color-violet-light: #8b5cf6;
    --color-violet-bg: rgba(124, 58, 237, 0.1);

    /* ========================================
       CORES DE ESTADO
       ======================================== */
    /* Sucesso */
    --color-success: #10b981;
    --color-success-dark: #059669;
    --color-success-light: #34d399;
    --color-success-bg: rgba(16, 185, 129, 0.1);
    --color-success-border: rgba(16, 185, 129, 0.2);

    /* Erro */
    --color-error: #ef4444;
    --color-error-dark: #dc2626;
    --color-error-light: #f87171;
    --color-error-bg: rgba(239, 68, 68, 0.1);
    --color-error-border: rgba(239, 68, 68, 0.2);

    /* Alerta/Warning */
    --color-warning: #f59e0b;
    --color-warning-dark: #d97706;
    --color-warning-light: #fbbf24;
    --color-warning-bg: rgba(245, 158, 11, 0.1);
    --color-warning-border: rgba(245, 158, 11, 0.2);

    /* Info */
    --color-info: #3b82f6;
    --color-info-dark: #2563eb;
    --color-info-light: #60a5fa;
    --color-info-bg: rgba(59, 130, 246, 0.1);
    --color-info-border: rgba(59, 130, 246, 0.2);

    /* ========================================
       CORES DE TEXTO
       ======================================== */
    --color-text-primary: #1e293b;
    --color-text-secondary: #64748b;
    --color-text-tertiary: #94a3b8;
    --color-text-muted: #cbd5e1;
    --color-text-inverse: #ffffff;

    /* ========================================
       CORES DE BACKGROUND
       ======================================== */
    --color-bg-primary: #ffffff;
    --color-bg-secondary: #f8fafc;
    --color-bg-tertiary: #f1f5f9;
    --color-bg-dark: #1e293b;
    --color-bg-darker: #0f172a;

    /* ========================================
       CORES DE BORDA
       ======================================== */
    --color-border-light: #e2e8f0;
    --color-border-medium: #cbd5e1;
    --color-border-dark: #94a3b8;

    /* ========================================
       GRADIENTES
       ======================================== */
    /* Gradiente primário (roxo) */
    --gradient-primary: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    --gradient-primary-hover: linear-gradient(135deg, #4338ca 0%, #6d28d9 100%);

    /* Gradiente de sucesso */
    --gradient-success: linear-gradient(135deg, #10b981 0%, #059669 100%);
    --gradient-success-hover: linear-gradient(135deg, #059669 0%, #047857 100%);

    /* Gradiente de erro */
    --gradient-error: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);

    /* Gradiente de warning */
    --gradient-warning: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);

    /* Gradiente de info */
    --gradient-info: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);

    /* Gradientes suaves (backgrounds) */
    --gradient-info-soft: linear-gradient(135deg, #dbeafe 0%, #bfdbfe 100%);
    --gradient-success-soft: linear-gradient(135deg, #dcfce7 0%, #bbf7d0 100%);
    --gradient-warning-soft: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    --gradient-error-soft: linear-gradient(135deg, #fee2e2 0%, #fecaca 100%);

    /* ========================================
       TIPOGRAFIA
       ======================================== */
    --font-family-base: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    --font-family-mono: 'SF Mono', 'Fira Code', 'Consolas', monospace;

    /* Tamanhos de fonte */
    --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 */

    /* Pesos de fonte */
    --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: 1.625;

    /* ========================================
       ESPAÇAMENTO
       ======================================== */
    --spacing-xs: 0.25rem;   /* 4px */
    --spacing-sm: 0.5rem;    /* 8px */
    --spacing-md: 1rem;      /* 16px */
    --spacing-lg: 1.5rem;    /* 24px */
    --spacing-xl: 2rem;      /* 32px */
    --spacing-2xl: 3rem;     /* 48px */
    --spacing-3xl: 4rem;     /* 64px */

    /* ========================================
       BORDER RADIUS
       ======================================== */
    --radius-xs: 4px;
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 24px;
    --radius-full: 9999px;

    /* ========================================
       SOMBRAS
       ======================================== */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.06);
    --shadow-md: 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);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-inner: inset 0 2px 4px rgba(0, 0, 0, 0.06);

    /* Sombras coloridas */
    --shadow-primary: 0 4px 14px rgba(79, 70, 229, 0.25);
    --shadow-success: 0 4px 14px rgba(16, 185, 129, 0.25);
    --shadow-error: 0 4px 14px rgba(239, 68, 68, 0.25);

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

    /* ========================================
       Z-INDEX
       ======================================== */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal-backdrop: 400;
    --z-modal: 500;
    --z-popover: 600;
    --z-tooltip: 700;
    --z-toast: 800;

    /* ========================================
       CONTAINERS
       ======================================== */
    --container-sm: 640px;
    --container-md: 768px;
    --container-lg: 1024px;
    --container-xl: 1280px;
    --container-2xl: 1536px;
}

/* ========================================
   CLASSES UTILITÁRIAS BASE
   ======================================== */

/* Flexbox utilities */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }
.gap-xs { gap: var(--spacing-xs); }
.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }

/* Text utilities */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.text-primary { color: var(--color-text-primary); }
.text-secondary { color: var(--color-text-secondary); }
.text-muted { color: var(--color-text-tertiary); }
.text-success { color: var(--color-success); }
.text-error { color: var(--color-error); }
.text-warning { color: var(--color-warning); }

/* Font utilities */
.font-medium { font-weight: var(--font-weight-medium); }
.font-semibold { font-weight: var(--font-weight-semibold); }
.font-bold { font-weight: var(--font-weight-bold); }

/* Spacing utilities */
.m-0 { margin: 0; }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }

.p-sm { padding: var(--spacing-sm); }
.p-md { padding: var(--spacing-md); }
.p-lg { padding: var(--spacing-lg); }

/* Width utilities */
.w-full { width: 100%; }
.max-w-full { max-width: 100%; }

/* ========================================
   ANIMAÇÕES BASE
   ======================================== */
@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-4px); }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Animation classes */
.animate-spin { animation: spin 1s linear infinite; }
.animate-pulse { animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite; }
.animate-bounce { animation: bounce 1s ease-in-out infinite; }
.animate-fade-in { animation: fadeIn var(--transition-base) ease-out; }
.animate-fade-in-up { animation: fadeInUp var(--transition-base) ease-out; }
.animate-scale-in { animation: scaleIn var(--transition-base) ease-out; }

/* ========================================
   COMPONENTES BASE
   ======================================== */

/* Container card base */
.card {
    background: var(--color-bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border-light);
}

.card-body {
    padding: var(--spacing-lg);
}

/* Input base */
.input-base {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--color-text-primary);
    background: var(--color-bg-primary);
    border: 2px solid var(--color-border-light);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.input-base:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-bg);
}

.input-base:disabled {
    background: var(--color-bg-tertiary);
    cursor: not-allowed;
    opacity: 0.7;
}

.input-base.error {
    border-color: var(--color-error);
}

.input-base.error:focus {
    box-shadow: 0 0 0 3px var(--color-error-bg);
}

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

/* Button base */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 0.75rem 1.5rem;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    line-height: 1;
    text-decoration: none;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-primary {
    color: var(--color-text-inverse);
    background: var(--gradient-primary);
}

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

.btn-success {
    color: var(--color-text-inverse);
    background: var(--gradient-success);
}

.btn-success:hover:not(:disabled) {
    background: var(--gradient-success-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-success);
}

.btn-secondary {
    color: var(--color-text-secondary);
    background: var(--color-bg-primary);
    border: 2px solid var(--color-border-light);
}

.btn-secondary:hover:not(:disabled) {
    border-color: var(--color-border-medium);
    background: var(--color-bg-secondary);
}

.btn-ghost {
    color: var(--color-text-secondary);
    background: transparent;
}

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

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: var(--font-size-sm);
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: var(--font-size-lg);
}

/* Skeleton loading */
.skeleton {
    background: linear-gradient(90deg, var(--color-bg-tertiary) 25%, var(--color-bg-secondary) 50%, var(--color-bg-tertiary) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius-sm);
}

.skeleton-text {
    height: 1em;
    margin-bottom: 0.5em;
}

.skeleton-text:last-child {
    width: 80%;
}

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

/* Spinner */
.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid var(--color-border-light);
    border-top-color: var(--color-primary);
    border-radius: var(--radius-full);
    animation: spin 0.8s linear infinite;
}

.spinner-sm {
    width: 14px;
    height: 14px;
    border-width: 2px;
}

.spinner-lg {
    width: 32px;
    height: 32px;
    border-width: 3px;
}

/* SR only (screen reader) */
.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;
}