/* ============================================
   P3L Training Website - Main Stylesheet
   ============================================ */

:root {
    /* Primary Colors */
    --primary: #1f4d3d;
    --primary-light: #2d6b54;
    --primary-dark: #173a2d;
    
    /* Accent Colors */
    --accent: #25d366;
    --accent-light: #34e775;
    --warning: #ff9800;
    --error: #f44336;
    
    /* Neutral Colors */
    --bg-white: #ffffff;
    --bg-light: #f9f9f9;
    --bg-gray: #f5f5f5;
    --text-primary: #1a1a1a;
    --text-secondary: #666666;
    --text-light: #999999;
    --border: #e0e0e0;
    
    /* Spacing */
    --spacing-xs: 8px;
    --spacing-sm: 12px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-full: 50%;
}

/* ============================================
   Global Styles
   ============================================ */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    color: var(--text-primary);
    background-color: var(--bg-white);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ============================================
   Typography
   ============================================ */

h1, h2, h3, h4, h5, h6 {
    font-family: 'Playfair Display', serif;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    color: var(--primary);
}

h1 {
    font-size: 48px;
}

h2 {
    font-size: 36px;
}

h3 {
    font-size: 28px;
}

h4 {
    font-size: 24px;
}

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

a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--accent);
}

/* ============================================
   Navigation Bar
   ============================================ */

.navbar {
    background-color: var(--primary);
    color: var(--bg-white);
    padding: var(--spacing-lg) 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

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

.navbar-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.navbar-brand h1 {
    font-size: 24px;
    margin: 0;
    color: var(--bg-white);
}

.navbar-brand span {
    font-size: 12px;
    color: var(--accent);
}

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

.nav-link {
    color: var(--bg-white);
    font-weight: 500;
    transition: color 0.3s ease;
    font-size: 14px;
}

.nav-link:hover,
.nav-link.active {
    color: var(--accent);
}

.nav-link-admin {
    background-color: var(--accent);
    color: var(--primary);
    padding: 8px 16px;
    border-radius: var(--radius-md);
    font-weight: 600;
}

.nav-link-admin:hover {
    background-color: var(--accent-light);
    color: var(--primary);
}

/* ============================================
   Hero Section
   ============================================ */

.hero {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: var(--bg-white);
    padding: var(--spacing-2xl) 0;
    text-align: center;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-content {
    max-width: 800px;
}

.hero h1 {
    font-size: 56px;
    color: var(--bg-white);
    margin-bottom: var(--spacing-lg);
}

.hero p {
    font-size: 20px;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-xl);
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    flex-wrap: wrap;
}

/* ============================================
   Buttons
   ============================================ */

.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: var(--radius-md);
    border: none;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    text-align: center;
}

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

.btn-primary:hover {
    background-color: var(--accent-light);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(37, 211, 102, 0.3);
}

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

.btn-secondary:hover {
    background-color: var(--bg-light);
}

.btn-large {
    padding: 16px 36px;
    font-size: 18px;
}

/* ============================================
   Forms
   ============================================ */

.form-group {
    margin-bottom: var(--spacing-lg);
}

label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
    color: var(--text-primary);
}

input,
textarea,
select {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-family: 'Inter', sans-serif;
    font-size: 16px;
    transition: border-color 0.3s ease;
}

input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(31, 77, 61, 0.1);
}

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

.form-error {
    color: var(--error);
    font-size: 14px;
    margin-top: 6px;
}

.form-success {
    color: var(--accent);
    font-size: 14px;
    margin-top: 6px;
}

/* ============================================
   Cards
   ============================================ */

.card {
    background-color: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.15);
}

.card-header {
    font-weight: 600;
    color: var(--primary);
    margin-bottom: var(--spacing-md);
}

/* ============================================
   Sections
   ============================================ */

section {
    padding: var(--spacing-2xl) 0;
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.section-title h2 {
    margin-bottom: var(--spacing-md);
}

.section-title p {
    font-size: 18px;
    color: var(--text-secondary);
}

/* ============================================
   Features Section
   ============================================ */

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
}

.feature-card {
    text-align: center;
}

.feature-icon {
    font-size: 48px;
    margin-bottom: var(--spacing-md);
}

.feature-card h3 {
    margin-bottom: var(--spacing-md);
}

/* ============================================
   Program Details
   ============================================ */

.program-details {
    background-color: var(--bg-light);
    border-left: 4px solid var(--accent);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-xl);
}

.program-details-row {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.program-details-row:last-child {
    margin-bottom: 0;
}

.program-label {
    font-weight: 600;
    color: var(--primary);
    min-width: 120px;
}

/* ============================================
   Registration Form Section
   ============================================ */

.register-section {
    background-color: var(--bg-gray);
}

.register-form {
    max-width: 600px;
    margin: 0 auto;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.form-row.full {
    grid-template-columns: 1fr;
}

/* ============================================
   Footer
   ============================================ */

.footer {
    background-color: var(--primary);
    color: var(--bg-white);
    padding: var(--spacing-2xl) 0 var(--spacing-xl);
    margin-top: var(--spacing-2xl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-section h3 {
    color: var(--accent);
    margin-bottom: var(--spacing-md);
}

.footer-section p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 14px;
}

.footer-section a {
    color: var(--accent);
}

.footer-section a:hover {
    text-decoration: underline;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    font-size: 14px;
}

/* ============================================
   Alert Messages
   ============================================ */

.alert {
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
}

.alert-success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.alert-info {
    background-color: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
}

.alert-warning {
    background-color: #fff3cd;
    color: #856404;
    border: 1px solid #ffeaa7;
}

/* ============================================
   Tables (for Admin)
   ============================================ */

table {
    width: 100%;
    border-collapse: collapse;
}

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

th {
    background-color: var(--bg-gray);
    font-weight: 600;
    color: var(--text-primary);
}

tr:hover {
    background-color: var(--bg-light);
}

/* ============================================
   Loading & Spinner
   ============================================ */

.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ============================================
   Responsive Design
   ============================================ */

@media (max-width: 768px) {
    h1 {
        font-size: 36px;
    }
    
    h2 {
        font-size: 28px;
    }
    
    .navbar-menu {
        gap: var(--spacing-md);
        font-size: 12px;
    }
    
    .hero {
        min-height: 400px;
        padding: var(--spacing-xl) 0;
    }
    
    .hero h1 {
        font-size: 36px;
    }
    
    .hero p {
        font-size: 16px;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .program-details-row {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .navbar {
        padding: var(--spacing-md) 0;
    }
    
    .navbar .container {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .navbar-menu {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    section {
        padding: var(--spacing-xl) 0;
    }
    
    .hero h1 {
        font-size: 28px;
    }
    
    h2 {
        font-size: 24px;
    }
}

/* ============================================
   Print Styles
   ============================================ */

@media print {
    .navbar,
    .footer,
    .btn {
        display: none;
    }
    
    .container {
        max-width: 100%;
    }
}