/* ========================================
   RESET & BASE STYLES
   ======================================== */

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

:root {
    /* Brand Colors from Logo */
    --primary-green: #3D7B3F;
    --dark-green: #2A5A2C;
    --light-green: #4A9A4D;
    --accent-green: #5CB85C;

    --primary-black: #1A1A1A;
    --secondary-black: #2C2C2C;
    --text-dark: #333333;
    --text-medium: #666666;
    --text-light: #999999;

    /* Neutral Colors */
    --white: #FFFFFF;
    --light-bg: #F8F9FA;
    --lighter-bg: #FAFBFC;
    --border-color: #E9ECEF;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);

    /* Spacing */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 32px;
    --spacing-xl: 48px;
    --spacing-2xl: 64px;
    --spacing-3xl: 96px;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    /* Transitions */
    --transition-base: all 0.3s ease;
    --transition-fast: all 0.15s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--text-dark);
    background: var(--white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* ========================================
   NAVIGATION (Updated for Centered Logo)
   ======================================== */

.navbar {
    background: var(--white);
    padding: var(--spacing-sm) 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-base);
}

.nav-content {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    width: 100%;
}

.nav-spacer {
    display: block;
}

.logo {
    display: flex;
    justify-content: center;
}

.logo img {
    height: 50px;
    width: auto;
    transition: var(--transition-fast);
}

.logo img:hover {
    transform: scale(1.05);
}

.nav-controls {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: var(--spacing-md);
}

/* Language Switcher */
.lang-switch {
    font-size: 14px;
    font-weight: 600;
}

.lang-link {
    text-decoration: none;
    color: var(--text-light);
    transition: var(--transition-fast);
    cursor: pointer;
}

.lang-link:hover,
.lang-link.active {
    color: var(--primary-green);
}

.lang-divider {
    margin: 0 4px;
    color: var(--border-color);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.mobile-menu-btn span {
    width: 25px;
    height: 3px;
    background: var(--primary-black);
    border-radius: 3px;
    transition: var(--transition-base);
}

/* ========================================
   HERO SECTION
   ======================================== */

.hero {
    position: relative;
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(135deg, var(--lighter-bg) 0%, var(--white) 100%);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background: linear-gradient(135deg, rgba(61, 123, 63, 0.03) 0%, rgba(61, 123, 63, 0.08) 100%);
    clip-path: polygon(25% 0%, 100% 0%, 100% 100%, 0% 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.hero-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: rgba(61, 123, 63, 0.1);
    color: var(--primary-green);
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.5px;
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
}

.hero-title {
    font-size: clamp(32px, 5vw, 56px);
    font-weight: 700;
    color: var(--primary-black);
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.hero-description {
    font-size: clamp(16px, 2vw, 18px);
    line-height: 1.8;
    color: var(--text-medium);
    margin-bottom: var(--spacing-xl);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-description p {
    margin-bottom: var(--spacing-sm);
}

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

/* ========================================
   BUTTONS
   ======================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: 16px 32px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: var(--transition-base);
    cursor: pointer;
    border: 2px solid transparent;
}

.btn-primary {
    background: var(--primary-green);
    color: var(--white);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background: var(--dark-green);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

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

/* ========================================
   STATS SECTION
   ======================================== */

.stats-section {
    padding: var(--spacing-2xl) 0;
    background: var(--white);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.stat-card {
    text-align: center;
    padding: var(--spacing-lg);
    background: var(--light-bg);
    border-radius: var(--radius-lg);
    transition: var(--transition-base);
}

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

.stat-number {
    font-size: 48px;
    font-weight: 700;
    color: var(--primary-green);
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 16px;
    color: var(--text-medium);
    font-weight: 500;
}

/* ========================================
   SECTION STYLES
   ======================================== */

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

.section-title {
    font-size: clamp(28px, 4vw, 40px);
    font-weight: 700;
    color: var(--primary-black);
    margin-bottom: var(--spacing-sm);
}

.section-subtitle {
    font-size: 18px;
    color: var(--text-medium);
}

/* ========================================
   CONNECT SECTION
   ======================================== */

.connect-section {
    padding: var(--spacing-3xl) 0;
    background: var(--lighter-bg);
}

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

.social-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--white);
    border-radius: var(--radius-lg);
    text-decoration: none;
    transition: var(--transition-base);
    border: 2px solid transparent;
}

.social-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-green);
}

.social-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    transition: var(--transition-base);
}

.social-icon.wikipedia { background: rgba(0, 0, 0, 0.05); color: var(--primary-black); }
.social-icon.facebook { background: rgba(24, 119, 242, 0.1); color: #1877F2; }
.social-icon.instagram { background: linear-gradient(45deg, rgba(225, 48, 108, 0.1), rgba(193, 53, 132, 0.1)); color: #E1306C; }
.social-icon.youtube { background: rgba(255, 0, 0, 0.1); color: #FF0000; }
.social-icon.x { background: rgba(0, 0, 0, 0.05); color: var(--primary-black); }
.social-icon.telegram { background: rgba(0, 136, 204, 0.1); color: #0088CC; }

.social-card:hover .social-icon {
    transform: scale(1.1);
}

.social-info { flex: 1; }
.social-name { font-size: 18px; font-weight: 600; color: var(--text-dark); margin-bottom: 4px; }
.social-desc { font-size: 14px; color: var(--text-light); }

/* ========================================
   SUPPORT SECTION
   ======================================== */

.support-section {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--dark-green) 100%);
    color: var(--white);
}

.support-content {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.support-header { margin-bottom: var(--spacing-xl); }
.support-section .section-title { color: var(--white); }
.support-description { font-size: 18px; line-height: 1.8; color: rgba(255, 255, 255, 0.9); }

.support-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.donate-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 18px 40px;
    background: var(--white);
    color: var(--primary-green);
    font-size: 18px;
    font-weight: 700;
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: var(--transition-base);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-lg);
}

.donate-btn:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.2);
}

.donate-btn svg { transition: var(--transition-fast); }
.donate-btn:hover svg { transform: translateX(5px); }

.payment-details {
    font-size: 14px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.8);
}

.payment-details p { margin-top: var(--spacing-sm); }

/* ========================================
   FOOTER (Updated: Logo Removed, Centered)
   ======================================== */

.footer {
    background: var(--primary-black);
    color: var(--white);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.footer-brand-text {
    margin-bottom: var(--spacing-lg);
}

.brand-name {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 4px;
}

.brand-tagline {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.6);
    letter-spacing: 1px;
}

.footer-divider {
    width: 100%;
    max-width: 600px;
    height: 1px;
    background: rgba(255, 255, 255, 0.1);
    margin: var(--spacing-lg) 0;
}

.footer-copyright {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.5);
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */

@media (max-width: 768px) {
    :root {
        --spacing-xl: 32px;
        --spacing-2xl: 48px;
        --spacing-3xl: 64px;
    }

    /* Adjust navbar for mobile */
    .nav-content {
        display: flex;
        justify-content: space-between;
    }

    .nav-spacer {
        display: none;
    }

    .logo {
        position: absolute;
        left: 50%;
        transform: translateX(-50%);
    }

    .mobile-menu-btn {
        display: flex;
    }

    .hero { padding: var(--spacing-2xl) 0; }
    .hero-background { width: 100%; clip-path: none; opacity: 0.5; }
    .hero-actions { flex-direction: column; width: 100%; }
    .btn { width: 100%; }

    .stats-grid { grid-template-columns: 1fr; gap: var(--spacing-sm); }
    .social-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
    .container { padding: 0 var(--spacing-sm); }
    .hero-badge { font-size: 12px; padding: 6px var(--spacing-sm); }
    .social-card { padding: var(--spacing-md); }
    .social-icon { width: 48px; height: 48px; }
    .support-card { padding: var(--spacing-md); }
    .donate-btn { padding: 16px 32px; font-size: 16px; }
}

/* ========================================
   ANIMATIONS & UTILITIES
   ======================================== */

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

.hero-content > * { animation: fadeIn 0.8s ease-out backwards; }
.hero-badge { animation-delay: 0.1s; }
.hero-title { animation-delay: 0.2s; }
.hero-description { animation-delay: 0.3s; }
.hero-actions { animation-delay: 0.4s; }

.sr-only {
    position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
    overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border-width: 0;
}

a:focus-visible, button:focus-visible {
    outline: 3px solid var(--primary-green);
    outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}