/* ============================================
   PRODE Mundial 2026 - Main Stylesheet
   ============================================ */

/* ============================================
   CSS Variables & Theme
   ============================================ */
:root {
    /* Colors from project specification */
    --primary-color: #0066CC;
    --secondary-color: #FFD700;
    --success-color: #28A745;
    --error-color: #DC3545;
    --warning-color: #FFC107;
    --info-color: #17A2B8;
    --background-color: #F8F9FA;
    --text-color: #212529;
    --text-muted: #6C757D;
    --border-color: #DEE2E6;
    --white: #FFFFFF;
    --dark: #343A40;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.15);
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-color);
    min-height: 100vh;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: #0052A3;
    text-decoration: underline;
}

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    color: var(--dark);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: var(--spacing-md);
}

/* ============================================
   Layout Components
   ============================================ */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.container-fluid {
    width: 100%;
    padding: 0 var(--spacing-md);
}

.row {
    display: flex;
    flex-wrap: wrap;
    margin: 0 calc(var(--spacing-md) * -0.5);
}

.col {
    flex: 1;
    padding: 0 calc(var(--spacing-md) * 0.5);
}

/* Grid System */
.col-1 { flex: 0 0 8.333333%; max-width: 8.333333%; }
.col-2 { flex: 0 0 16.666667%; max-width: 16.666667%; }
.col-3 { flex: 0 0 25%; max-width: 25%; }
.col-4 { flex: 0 0 33.333333%; max-width: 33.333333%; }
.col-6 { flex: 0 0 50%; max-width: 50%; }
.col-8 { flex: 0 0 66.666667%; max-width: 66.666667%; }
.col-12 { flex: 0 0 100%; max-width: 100%; }

/* ============================================
   Header & Navigation
   ============================================ */
.header {
    background: linear-gradient(135deg, var(--primary-color) 0%, #0052A3 100%);
    color: var(--white);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) 0;
}

.navbar-brand {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--white);
    text-decoration: none;
}

.navbar-brand:hover {
    color: var(--secondary-color);
    text-decoration: none;
}

.navbar-brand img {
    height: 40px;
    margin-right: var(--spacing-sm);
}

.navbar-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
    align-items: center;
}

.navbar-menu a {
    color: var(--white);
    font-weight: 500;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.navbar-menu a:hover {
    background-color: rgba(255, 255, 255, 0.1);
    text-decoration: none;
}

.navbar-menu a.active {
    background-color: rgba(255, 255, 255, 0.2);
}

.navbar-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--white);
    font-size: 1.5rem;
    cursor: pointer;
}

/* ============================================
   Cards
   ============================================ */
.card {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
    margin-bottom: var(--spacing-lg);
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.card-header {
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, var(--primary-color) 0%, #0052A3 100%);
    color: var(--white);
    font-weight: 600;
    font-size: 1.25rem;
}

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

.card-footer {
    padding: var(--spacing-lg);
    background-color: var(--background-color);
    border-top: 1px solid var(--border-color);
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 1rem;
    font-weight: 500;
    text-align: center;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    line-height: 1.5;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
    text-decoration: none;
}

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

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

.btn-primary:hover {
    background-color: #0052A3;
    color: var(--white);
}

.btn-secondary {
    background-color: var(--secondary-color);
    color: var(--dark);
}

.btn-secondary:hover {
    background-color: #E6C200;
    color: var(--dark);
}

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

.btn-success:hover {
    background-color: #218838;
    color: var(--white);
}

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

.btn-danger:hover {
    background-color: #C82333;
    color: var(--white);
}

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

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

.btn-block {
    display: block;
    width: 100%;
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.125rem;
}

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 0.875rem;
}

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

.form-label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    color: var(--dark);
}

.form-control {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 1rem;
    line-height: 1.5;
    color: var(--text-color);
    background-color: var(--white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

.form-control::placeholder {
    color: var(--text-muted);
}

.form-control.is-invalid {
    border-color: var(--error-color);
}

.form-control.is-valid {
    border-color: var(--success-color);
}

.form-text {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: 0.875rem;
    color: var(--text-muted);
}

.invalid-feedback {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: 0.875rem;
    color: var(--error-color);
}

.valid-feedback {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: 0.875rem;
    color: var(--success-color);
}

/* ============================================
   Tables
   ============================================ */
.table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--white);
}

.table th,
.table td {
    padding: var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.table th {
    background-color: var(--background-color);
    font-weight: 600;
    color: var(--dark);
}

.table tbody tr:hover {
    background-color: rgba(0, 102, 204, 0.05);
}

.table-striped tbody tr:nth-child(odd) {
    background-color: rgba(0, 0, 0, 0.02);
}

/* ============================================
   Badges & Labels
   ============================================ */
.badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.75rem;
    font-weight: 600;
    line-height: 1;
    text-align: center;
    white-space: nowrap;
    border-radius: var(--radius-sm);
}

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

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

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

.badge-danger {
    background-color: var(--error-color);
    color: var(--white);
}

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

/* ============================================
   Alerts
   ============================================ */
.alert {
    padding: var(--spacing-md) var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    border-radius: var(--radius-md);
    border-left: 4px solid;
}

.alert-success {
    background-color: #D4EDDA;
    border-color: var(--success-color);
    color: #155724;
}

.alert-error {
    background-color: #F8D7DA;
    border-color: var(--error-color);
    color: #721C24;
}

.alert-warning {
    background-color: #FFF3CD;
    border-color: var(--warning-color);
    color: #856404;
}

.alert-info {
    background-color: #D1ECF1;
    border-color: var(--info-color);
    color: #0C5460;
}

/* ============================================
   Match Card (Specific to PRODE)
   ============================================ */
.match-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg);
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--spacing-md);
    transition: all var(--transition-normal);
}

.match-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.match-team {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex: 1;
}

.match-team img {
    width: 40px;
    height: 40px;
    object-fit: contain;
}

.match-team-name {
    font-weight: 600;
    font-size: 1.125rem;
}

.match-score {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
}

.match-vs {
    font-size: 1rem;
    color: var(--text-muted);
    font-weight: 400;
}

.match-info {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.875rem;
}

.match-date {
    font-weight: 500;
}

.match-venue {
    font-size: 0.75rem;
}

/* ============================================
   Ranking Table
   ============================================ */
.ranking-table {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.ranking-row {
    display: flex;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    transition: background-color var(--transition-fast);
}

.ranking-row:hover {
    background-color: rgba(0, 102, 204, 0.05);
}

.ranking-position {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    min-width: 50px;
}

.ranking-position.gold {
    color: var(--secondary-color);
}

.ranking-position.silver {
    color: #C0C0C0;
}

.ranking-position.bronze {
    color: #CD7F32;
}

.ranking-user {
    flex: 1;
    font-weight: 500;
}

.ranking-stats {
    display: flex;
    gap: var(--spacing-lg);
    font-size: 0.875rem;
}

.ranking-stat {
    text-align: center;
}

.ranking-stat-value {
    display: block;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
}

.ranking-stat-label {
    display: block;
    color: var(--text-muted);
    font-size: 0.75rem;
}

/* ============================================
   Prediction Form
   ============================================ */
.prediction-form {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    justify-content: center;
}

.prediction-input {
    width: 80px;
    text-align: center;
    font-size: 1.5rem;
    font-weight: 700;
    padding: var(--spacing-md);
}

.prediction-separator {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-muted);
}

/* ============================================
   Dashboard Stats
   ============================================ */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.stat-card {
    background: linear-gradient(135deg, var(--primary-color) 0%, #0052A3 100%);
    color: var(--white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-md);
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.stat-label {
    font-size: 0.875rem;
    opacity: 0.9;
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background-color: var(--dark);
    color: var(--white);
    padding: var(--spacing-xl) 0;
    margin-top: var(--spacing-xxl);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
}

.footer-links {
    display: flex;
    gap: var(--spacing-lg);
    list-style: none;
}

.footer-links a {
    color: var(--white);
    opacity: 0.8;
    transition: opacity var(--transition-fast);
}

.footer-links a:hover {
    opacity: 1;
    text-decoration: none;
}

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

.text-primary { color: var(--primary-color); }
.text-success { color: var(--success-color); }
.text-danger { color: var(--error-color); }
.text-muted { color: var(--text-muted); }

.bg-primary { background-color: var(--primary-color); }
.bg-success { background-color: var(--success-color); }
.bg-danger { background-color: var(--error-color); }
.bg-light { background-color: var(--background-color); }

.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-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); }

.p-1 { padding: var(--spacing-sm); }
.p-2 { padding: var(--spacing-md); }
.p-3 { padding: var(--spacing-lg); }
.p-4 { padding: var(--spacing-xl); }

.d-none { display: none; }
.d-block { display: block; }
.d-flex { display: flex; }
.d-grid { display: grid; }

.flex-column { flex-direction: column; }
.justify-center { justify-content: center; }
.align-center { align-items: center; }
.gap-1 { gap: var(--spacing-sm); }
.gap-2 { gap: var(--spacing-md); }
.gap-3 { gap: var(--spacing-lg); }

/* ============================================
   Responsive Design - Mobile First
   ============================================ */

/* Small devices (landscape phones, 576px and up) */
@media (max-width: 576px) {
    html {
        font-size: 14px;
    }
    
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    h1 { font-size: 1.75rem; }
    h2 { font-size: 1.5rem; }
    h3 { font-size: 1.25rem; }
}

/* Medium devices (tablets, 768px and up) */
@media (max-width: 768px) {
    .navbar-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--primary-color);
        flex-direction: column;
        padding: var(--spacing-md);
        box-shadow: var(--shadow-lg);
    }
    
    .navbar-menu.active {
        display: flex;
    }
    
    .navbar-toggle {
        display: block;
    }
    
    .match-card {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .match-team {
        width: 100%;
        justify-content: center;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .ranking-stats {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .col-1, .col-2, .col-3, .col-4, .col-6, .col-8 {
        flex: 0 0 100%;
        max-width: 100%;
    }
}

/* Large devices (desktops, 992px and up) */
@media (min-width: 992px) {
    .container {
        max-width: 960px;
    }
}

/* Extra large devices (large desktops, 1200px and up) */
@media (min-width: 1200px) {
    .container {
        max-width: 1140px;
    }
}

/* ============================================
   Loading & Animations
   ============================================ */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: var(--white);
    animation: spin 0.8s linear infinite;
}

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

.fade-in {
    animation: fadeIn 0.5s ease-in;
}

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

.slide-in {
    animation: slideIn 0.5s ease-out;
}

@keyframes slideIn {
    from {
        transform: translateY(-20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* ============================================
   Print Styles
   ============================================ */
@media print {
    .navbar,
    .footer,
    .btn,
    .navbar-toggle {
        display: none;
    }
    
    body {
        background-color: var(--white);
    }
    
    .card {
        box-shadow: none;
        border: 1px solid var(--border-color);
    }
}

/* Made with Bob */