/* ============================================
   CSS RESET & BASE STYLES
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* ============================================
   CSS CUSTOM PROPERTIES (DESIGN SYSTEM)
   ============================================ */
:root {
    /* Colors */
    --primary-color: #1d5a8e;
    --primary-dark: #134a75;
    --secondary-color: #4a90c2;
    --accent-color: #f5a623;
    --text-primary: #333333;
    --text-secondary: #666666;
    --background-light: #f8f9fa;
    --background-white: #ffffff;
    --success-color: #28a745;
    --border-color: #e0e0e0;

    /* Typography */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.2);
}

/* ============================================
   GLOBAL STYLES
   ============================================ */
html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    color: var(--text-primary);
    line-height: 1.6;
    background-color: var(--background-white);
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

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-sm);
}

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

a:hover {
    color: var(--primary-dark);
}

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

/* ============================================
   HEADER STYLES
   ============================================ */
.top-bar {
    background-color: var(--primary-dark);
    color: var(--background-white);
    padding: var(--spacing-xs) 0;
    font-size: 0.875rem;
}

.top-bar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.top-bar-left,
.top-bar-right {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.top-bar a {
    color: var(--background-white);
    transition: color var(--transition-fast);
}

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

.registry-id {
    font-weight: 600;
    color: var(--accent-color);
}

header {
    background-color: var(--background-white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: box-shadow var(--transition-normal);
}

header.scrolled {
    box-shadow: var(--shadow-md);
}

.header-main {
    padding: var(--spacing-sm) 0;
}

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

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

.logo-section img {
    height: 60px;
    width: auto;
}

.org-name {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
}

nav ul {
    list-style: none;
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

nav a {
    color: var(--text-primary);
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 4px;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

nav a:hover,
nav a.active {
    color: var(--primary-color);
    background-color: rgba(29, 90, 142, 0.1);
}

.cta-button {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--background-white) !important;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 25px;
    font-weight: 600;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    white-space: nowrap;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
}

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

/* ============================================
   FOOTER STYLES
   ============================================ */
footer {
    background-color: var(--primary-dark);
    color: var(--background-white);
    padding: var(--spacing-xxl) 0 var(--spacing-sm);
}

.footer-columns {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-column h4 {
    color: var(--accent-color);
    margin-bottom: var(--spacing-md);
    font-size: 1.125rem;
}

.footer-column ul {
    list-style: none;
}

.footer-column ul li {
    margin-bottom: var(--spacing-xs);
}

.footer-column a {
    color: var(--background-white);
    transition: color var(--transition-fast);
}

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

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

.footer-logo-section {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.footer-logo-section img {
    height: 50px;
    width: auto;
}

.footer-copyright {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.8);
}

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

/* ============================================
   CONTAINER & LAYOUT
   ============================================ */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section {
    padding: var(--spacing-xxl) 0;
}

.section-light {
    background-color: var(--background-light);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    position: relative;
    height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--background-white);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 1;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(29, 90, 142, 0.85), rgba(74, 144, 194, 0.75));
    z-index: 2;
}

.hero-content {
    position: relative;
    z-index: 3;
    max-width: 800px;
    padding: 0 var(--spacing-md);
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-lg);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

/* ============================================
   CARDS & COMPONENTS
   ============================================ */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.card {
    background: var(--background-white);
    border-radius: 12px;
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.card-glass {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.card-icon {
    font-size: 2.5rem;
    color: var(--accent-color);
    margin-bottom: var(--spacing-sm);
}

.card h3 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: 25px;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-normal);
    border: none;
    font-family: var(--font-body);
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--background-white);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
}

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

.btn-secondary:hover {
    background-color: #d89419;
    transform: translateY(-2px);
}

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

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--text-primary);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: var(--spacing-sm);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-family: var(--font-body);
    font-size: 1rem;
    transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(29, 90, 142, 0.1);
}

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

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease forwards;
}

.fade-in-delay-1 {
    animation-delay: 0.1s;
}

.fade-in-delay-2 {
    animation-delay: 0.2s;
}

.fade-in-delay-3 {
    animation-delay: 0.3s;
}

.fade-in-delay-4 {
    animation-delay: 0.4s;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.75rem;
    }

    h3 {
        font-size: 1.5rem;
    }

    .hero {
        height: 400px;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 1rem;
    }

    .footer-columns {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-lg);
    }

    .mobile-menu-toggle {
        display: block;
    }

    nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--background-white);
        box-shadow: var(--shadow-md);
        padding: var(--spacing-md);
    }

    nav.active {
        display: block;
    }

    nav ul {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    nav a {
        display: block;
        padding: var(--spacing-sm);
    }

    .top-bar .container {
        justify-content: center;
        text-align: center;
    }

    .top-bar-left,
    .top-bar-right {
        flex-direction: column;
        gap: var(--spacing-xs);
    }
}

@media (max-width: 480px) {
    .footer-columns {
        grid-template-columns: 1fr;
    }

    .card-grid {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.text-center {
    text-align: center;
}

.text-primary {
    color: var(--primary-color);
}

.text-accent {
    color: var(--accent-color);
}

.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);
}