/* ===========================================
   COMSOL v2 - Sistema de Compras
   Paleta de Cores e Estilos Globais
   =========================================== */

:root {
    /* Cores Primárias */
    --primary-blue: #1E3A5F;
    --primary-blue-light: #2563EB;
    --primary-blue-dark: #0F2340;
    
    /* Cores Secundárias */
    --secondary-yellow: #F59E0B;
    --secondary-yellow-light: #FBBF24;
    --secondary-yellow-dark: #D97706;
    
    /* Neutras */
    --white: #FFFFFF;
    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-400: #9CA3AF;
    --gray-500: #6B7280;
    --gray-600: #4B5563;
    --gray-700: #374151;
    --gray-800: #1F2937;
    --gray-900: #111827;

    /* Status */
    --success: #10B981;
    --warning: #F59E0B;
    --danger: #EF4444;
    --info: #3B82F6;

    /* Sombras */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-2xl: 1rem;

    /* Transições */
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
    --transition-slow: 500ms ease;
}

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

body {
    font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
    color: var(--gray-800);
    background-color: var(--gray-50);
    line-height: 1.6;
}

/* Scrollbar customizada */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--gray-100);
}

::-webkit-scrollbar-thumb {
    background: var(--gray-400);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gray-500);
}

/* Componentes Base */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--radius-lg);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    gap: 0.5rem;
}

.btn-primary {
    background-color: var(--primary-blue-light);
    color: var(--white);
}

.btn-primary:hover {
    background-color: var(--primary-blue);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background-color: var(--secondary-yellow);
    color: var(--gray-900);
}

.btn-secondary:hover {
    background-color: var(--secondary-yellow-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background-color: transparent;
    border: 2px solid var(--primary-blue-light);
    color: var(--primary-blue-light);
}

.btn-outline:hover {
    background-color: var(--primary-blue-light);
    color: var(--white);
}

/* Inputs */
.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-lg);
    font-size: 0.875rem;
    transition: all var(--transition-fast);
    background-color: var(--white);
    color: var(--gray-800);
}

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

.form-input::placeholder {
    color: var(--gray-400);
}

.form-label {
    display: block;
    margin-bottom: 0.375rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-700);
}

/* Cards */
.card {
    background-color: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    padding: 1.5rem;
}

/* Alertas */
.alert {
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.alert-success {
    background-color: #D1FAE5;
    color: #065F46;
    border: 1px solid #6EE7B7;
}

.alert-error {
    background-color: #FEE2E2;
    color: #991B1B;
    border: 1px solid #FCA5A5;
}

.alert-warning {
    background-color: #FEF3C7;
    color: #92400E;
    border: 1px solid #FCD34D;
}

.alert-info {
    background-color: #DBEAFE;
    color: #1E40AF;
    border: 1px solid #93C5FD;
}

/* Loading Spinner */
.spinner {
    width: 1.25rem;
    height: 1.25rem;
    border: 2px solid var(--gray-200);
    border-top-color: var(--primary-blue-light);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

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

/* Login Page Específico */
.login-bg {
    background: linear-gradient(135deg, rgba(15, 35, 64, 0.85) 0%, rgba(30, 58, 95, 0.9) 100%);
    min-height: 100vh;
}

.login-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
}

/* Utilitários */
.text-gradient {
    background: linear-gradient(135deg, var(--primary-blue-light), var(--secondary-yellow));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}