/* =============================================================================
   Base Styles - Shared across all pages
   Onde Tem Leilão
   ============================================================================= */

/* =============================================================================
   CSS Custom Properties (Variables) - New Color Scheme
   ============================================================================= */
:root {
    /* Brand Colors */
    --color-primary-orange: #e07d2d;
    --color-primary-orange-hover: #c96d1f;
    --color-primary-orange-light: #f09346;
    
    /* Dark Navy - Main backgrounds and footer */
    --color-navy-dark: #1a202c;
    --color-navy-medium: #2d3748;
    --color-navy-light: #4a5568;
    
    /* Neutral Colors */
    --color-white: #ffffff;
    --color-cream: #fef6e8;
    --color-cream-border: #f5e6cc;
    --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;
    
    /* Semantic Colors */
    --color-success: #10b981;
    --color-success-light: #d1fae5;
    --color-success-dark: #065f46;
    --color-warning: #f59e0b;
    --color-warning-light: #fef3c7;
    --color-warning-dark: #92400e;
    --color-error: #ef4444;
    --color-error-light: #fee2e2;
    --color-error-dark: #991b1b;
    --color-info: #3b82f6;
    --color-info-light: #dbeafe;
    --color-info-dark: #1e40af;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --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 -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);
    
    /* Typography */
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;
}

/* =============================================================================
   CSS Reset & Base Styles
   ============================================================================= */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-sans);
    background: var(--color-gray-50);
    color: var(--color-gray-900);
    line-height: 1.6;
    min-height: 100vh;
}

/* =============================================================================
   Container & Layout
   ============================================================================= */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.container-sm {
    max-width: 640px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.container-md {
    max-width: 768px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* =============================================================================
   Header / Navigation Bar
   ============================================================================= */
.header {
    background: var(--color-white);
    border-bottom: 1px solid var(--color-gray-200);
    padding: var(--spacing-md) 0;
    margin-bottom: var(--spacing-xl);
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.header-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-primary-orange);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.header-brand:hover {
    color: var(--color-primary-orange-hover);
}

.header-nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.header-nav-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.header-nav a {
    color: var(--color-gray-700);
    text-decoration: none;
    font-weight: 500;
    font-size: var(--font-size-base);
    transition: color var(--transition-fast);
}

.header-nav a:hover {
    color: var(--color-primary-orange);
}

.user-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding-left: var(--spacing-lg);
    border-left: 1px solid var(--color-gray-200);
}

.username {
    font-weight: 600;
    color: var(--color-gray-700);
    font-size: var(--font-size-sm);
}

/* =============================================================================
   Buttons
   ============================================================================= */
.btn {
    display: inline-block;
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-base);
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    text-align: center;
    transition: all var(--transition-normal);
    font-family: inherit;
    line-height: 1.5;
}

/* Primary button - Orange */
.btn-primary {
    background: var(--color-primary-orange);
    color: var(--color-white);
}

.btn-primary:hover {
    background: var(--color-primary-orange-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

/* Default button (use primary style) */
.btn {
    background: var(--color-primary-orange);
    color: var(--color-white);
}

.btn:hover {
    background: var(--color-primary-orange-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Secondary button - Gray */
.btn-secondary {
    background: var(--color-gray-600);
    color: var(--color-white);
}

.btn-secondary:hover {
    background: var(--color-gray-700);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Danger button - Red */
.btn-danger {
    background: var(--color-error);
    color: var(--color-white);
}

.btn-danger:hover {
    background: var(--color-error-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Button sizes */
.btn-sm {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
}

.btn-lg {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: var(--font-size-lg);
}

/* Full width button */
.btn-block {
    width: 100%;
    display: block;
}

/* =============================================================================
   Cards
   ============================================================================= */
.card {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--spacing-xl);
}

.card-cream {
    background: var(--color-cream);
    border: 2px solid var(--color-cream-border);
}

.card h1,
.card h2,
.card h3 {
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-lg);
}

.card h1 {
    font-size: var(--font-size-3xl);
    font-weight: 700;
}

.card h2 {
    font-size: var(--font-size-2xl);
    font-weight: 600;
}

.card h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
}

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

.form-group label {
    display: block;
    font-weight: 600;
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-base);
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: var(--spacing-md);
    font-size: var(--font-size-base);
    color: var(--color-gray-900);
    background: var(--color-white);
    border: 2px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    font-family: inherit;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--color-primary-orange);
    box-shadow: 0 0 0 3px rgba(224, 125, 45, 0.1);
}

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

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

/* =============================================================================
   Alerts / Messages
   ============================================================================= */
.alert {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
    font-weight: 500;
    border: 1px solid transparent;
}

.alert-success {
    background: var(--color-success-light);
    color: var(--color-success-dark);
    border-color: var(--color-success);
}

.alert-error {
    background: var(--color-error-light);
    color: var(--color-error-dark);
    border-color: var(--color-error);
}

.alert-warning {
    background: var(--color-warning-light);
    color: var(--color-warning-dark);
    border-color: var(--color-warning);
}

.alert-info {
    background: var(--color-info-light);
    color: var(--color-info-dark);
    border-color: var(--color-info);
}

/* =============================================================================
   Footer
   ============================================================================= */
.footer {
    background: var(--color-navy-dark);
    color: var(--color-gray-300);
    padding: var(--spacing-2xl) 0 var(--spacing-xl);
    margin-top: var(--spacing-3xl);
}

.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-xl);
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-primary-orange);
    margin-bottom: var(--spacing-md);
}

.footer-description {
    color: var(--color-gray-400);
    line-height: 1.6;
    max-width: 400px;
}

.footer-section h3 {
    color: var(--color-white);
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links li {
    margin-bottom: var(--spacing-sm);
}

.footer-links a {
    color: var(--color-gray-400);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-primary-orange);
}

.footer-bottom {
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-navy-medium);
    text-align: center;
    color: var(--color-gray-500);
    font-size: var(--font-size-sm);
}

/* =============================================================================
   Utility Classes
   ============================================================================= */
.text-center {
    text-align: center;
}

.text-right {
    text-align: right;
}

.text-muted {
    color: var(--color-gray-500);
}

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }

/* =============================================================================
   Responsive Design
   ============================================================================= */
@media (max-width: 768px) {
    .header-inner {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .header-nav {
        flex-direction: column;
        gap: var(--spacing-md);
        width: 100%;
    }
    
    .header-nav-links {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .user-info {
        border-left: none;
        border-top: 1px solid var(--color-gray-200);
        padding-left: 0;
        padding-top: var(--spacing-md);
        width: 100%;
        justify-content: center;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
}