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

:root {
    /* Color System */
    --primary: #6366F1;
    --primary-dark: #4F46E5;
    --primary-light: #8B5CF6;
    --secondary: #06D6A0;
    --accent: #FF6B6B;
    --success: #10B981;
    --warning: #F59E0B;
    --error: #EF4444;
    
    /* Neutral Colors */
    --white: #FFFFFF;
    --gray-50: #F8FAFC;
    --gray-100: #F1F5F9;
    --gray-200: #E2E8F0;
    --gray-300: #CBD5E1;
    --gray-400: #94A3B8;
    --gray-500: #64748B;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1E293B;
    --gray-900: #0F172A;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #6366F1 0%, #8B5CF6 100%);
    --gradient-secondary: linear-gradient(135deg, #06D6A0 0%, #10B981 100%);
    --gradient-accent: linear-gradient(135deg, #FF6B6B 0%, #FF8E8E 100%);
    --gradient-hero: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-premium: linear-gradient(135deg, #F093FB 0%, #F5576C 100%);
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* 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);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-2xl: 24px;
    
    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    --space-3xl: 64px;
}

/* Base Styles */
body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--gray-700);
    background: var(--white);
    overflow-x: hidden;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    color: var(--gray-900);
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--gray-200);
    z-index: 1000;
    padding: var(--space-md) 0;
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--gray-900);
}

.logo-icon {
    background: var(--gradient-primary);
    width: 32px;
    height: 32px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
}

.nav-links {
    display: flex;
    gap: var(--space-xl);
}

.nav-link {
    color: var(--gray-600);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: var(--primary);
}

.support-btn {
    background: var(--gradient-secondary);
    color: var(--white);
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-lg);
    text-decoration: none;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    transition: all 0.3s ease;
}

.support-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Hero Section */
.hero {
    position: relative;
    padding: 160px 0 100px;
    background: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
    color: var(--white);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(99, 102, 241, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(6, 214, 160, 0.05) 0%, transparent 50%);
}

.hero-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.2) 0%, transparent 70%);
    filter: blur(40px);
}

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

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(255, 255, 255, 0.2);
    margin-bottom: var(--space-2xl);
    font-weight: 500;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--space-xl);
}

.hero-description {
    font-size: 1.25rem;
    color: var(--gray-300);
    margin-bottom: var(--space-2xl);
    line-height: 1.6;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--space-2xl);
    margin-top: var(--space-2xl);
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--secondary);
    margin-bottom: var(--space-xs);
}

.stat-label {
    color: var(--gray-400);
    font-size: 0.9rem;
    font-weight: 500;
}

/* Support Section */
.support-section {
    padding: var(--space-3xl) 0;
    background: var(--gray-50);
}

.support-card {
    background: var(--white);
    border-radius: var(--radius-2xl);
    padding: var(--space-2xl);
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--gray-200);
}

.support-content {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
}

.support-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-accent);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 2rem;
}

.support-text h2 {
    font-size: 2rem;
    margin-bottom: var(--space-sm);
    color: var(--gray-900);
}

.support-text p {
    color: var(--gray-600);
    font-size: 1.1rem;
    line-height: 1.6;
}

.support-btn-primary {
    background: var(--gradient-accent);
    color: var(--white);
    border: none;
    padding: var(--space-md) var(--space-xl);
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-left: auto;
}

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

.donation-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: var(--space-md);
}

.donation-option {
    background: var(--gray-100);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.donation-option:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
}

.donation-option.active {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--white);
}

.option-amount {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--space-xs);
}

.option-label {
    font-size: 0.9rem;
    color: var(--gray-600);
}

.donation-option.active .option-label {
    color: var(--white);
}

/* Services Section */
.services-section {
    padding: var(--space-3xl) 0;
    background: var(--white);
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.section-header h2 {
    font-size: 3rem;
    margin-bottom: var(--space-md);
    background: linear-gradient(135deg, var(--gray-900) 0%, var(--primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-header p {
    font-size: 1.25rem;
    color: var(--gray-600);
    max-width: 600px;
    margin: 0 auto;
}

.categories-container {
    display: flex;
    flex-direction: column;
    gap: var(--space-2xl);
}

.category-section {
    background: var(--gray-50);
    border-radius: var(--radius-2xl);
    padding: var(--space-2xl);
    border: 1px solid var(--gray-200);
}

.category-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.category-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.5rem;
}

.category-title {
    font-size: 2rem;
    font-weight: 600;
    color: var(--gray-900);
}

.plans-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-lg);
}

.plan-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    border: 1px solid var(--gray-200);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.plan-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
}

.plan-card.popular {
    border-color: var(--primary);
    transform: scale(1.02);
    box-shadow: var(--shadow-xl);
}

.plan-card.popular::after {
    content: 'Most Popular';
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    background: var(--gradient-primary);
    color: var(--white);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
}

.plan-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-2xl);
}

.plan-header {
    display: flex;
    justify-content: between;
    align-items: flex-start;
    margin-bottom: var(--space-lg);
}

.plan-name {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: var(--space-xs);
}

.plan-price {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: var(--space-xs);
}

.plan-duration {
    color: var(--gray-600);
    font-weight: 500;
}

.plan-features {
    list-style: none;
    margin-bottom: var(--space-xl);
}

.plan-features li {
    padding: var(--space-sm) 0;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--gray-600);
}

.plan-features li i {
    color: var(--success);
    font-size: 0.875rem;
}

.subscribe-btn {
    width: 100%;
    background: var(--gradient-primary);
    color: var(--white);
    border: none;
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
}

.subscribe-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Features Section */
.features-section {
    padding: var(--space-3xl) 0;
    background: var(--gray-50);
}

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

.feature-card {
    background: var(--white);
    padding: var(--space-xl);
    border-radius: var(--radius-xl);
    text-align: center;
    border: 1px solid var(--gray-200);
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 2rem;
    margin: 0 auto var(--space-lg);
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: var(--space-md);
    color: var(--gray-900);
}

.feature-card p {
    color: var(--gray-600);
    line-height: 1.6;
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(8px);
    z-index: 2000;
    align-items: center;
    justify-content: center;
    padding: var(--space-lg);
}

.modal-container {
    background: var(--white);
    border-radius: var(--radius-2xl);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-2xl);
    animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: scale(0.9) translateY(-20px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: between;
    padding: var(--space-xl);
    border-bottom: 1px solid var(--gray-200);
}

.modal-header h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--gray-900);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.25rem;
    color: var(--gray-500);
    cursor: pointer;
    padding: var(--space-xs);
    border-radius: var(--radius-sm);
    transition: all 0.3s ease;
}

.modal-close:hover {
    background: var(--gray-100);
    color: var(--gray-700);
}

.modal-body {
    padding: var(--space-xl);
}

/* Form Styles */
.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-group label {
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: var(--space-sm);
    font-size: 0.9rem;
}

.form-group input,
.form-group textarea {
    padding: var(--space-md) var(--space-lg);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    font-size: 1rem;
    transition: all 0.3s ease;
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

.input-note {
    font-size: 0.875rem;
    color: var(--gray-500);
    margin-top: var(--space-xs);
}

/* Plan Summary */
.plan-summary-card {
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    margin-bottom: var(--space-xl);
    border: 1px solid var(--gray-200);
}

.summary-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-sm) 0;
}

.summary-item:not(:last-child) {
    border-bottom: 1px solid var(--gray-200);
}

.summary-total {
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--primary);
}

/* Donation Form Styles */
.donation-hero {
    text-align: center;
    background: var(--gradient-accent);
    color: var(--white);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-xl);
}

.donation-hero i {
    font-size: 3rem;
    margin-bottom: var(--space-md);
}

.donation-hero p {
    font-size: 1.1rem;
    opacity: 0.9;
}

.amount-section {
    margin-bottom: var(--space-xl);
}

.amount-input-container {
    position: relative;
    margin-bottom: var(--space-lg);
}

.currency {
    position: absolute;
    left: var(--space-lg);
    top: 50%;
    transform: translateY(-50%);
    font-weight: 600;
    color: var(--gray-500);
}

.amount-input-container input {
    padding-left: 80px;
    font-size: 1.5rem;
    font-weight: 600;
    text-align: right;
}

.amount-suggestions {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
}

.amount-suggestion {
    background: var(--gray-100);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 600;
}

.amount-suggestion:hover {
    border-color: var(--primary);
    background: var(--primary);
    color: var(--white);
}

/* Button Styles */
.payment-btn,
.donation-submit-btn {
    width: 100%;
    background: var(--gradient-primary);
    color: var(--white);
    border: none;
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: 1.1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    margin-top: var(--space-lg);
}

.donation-submit-btn {
    background: var(--gradient-accent);
}

.payment-btn:hover:not(:disabled),
.donation-submit-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.payment-btn:disabled,
.donation-submit-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.btn-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
}

.btn-loading {
    display: none;
}

/* Payment Result */
.payment-result {
    margin-top: var(--space-lg);
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    display: none;
    text-align: center;
}

.payment-result.success {
    background: #D1FAE5;
    color: #065F46;
    border: 1px solid #A7F3D0;
}

.payment-result.error {
    background: #FEE2E2;
    color: #991B1B;
    border: 1px solid #FECACA;
}

.payment-result.info {
    background: #DBEAFE;
    color: #1E40AF;
    border: 1px solid #BFDBFE;
}

/* Footer */
.footer {
    background: var(--gray-900);
    color: var(--white);
    padding: var(--space-3xl) 0 var(--space-xl);
}

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

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
}

.footer-brand p {
    color: var(--gray-400);
    line-height: 1.6;
    max-width: 300px;
}

.footer-column h4 {
    color: var(--white);
    margin-bottom: var(--space-lg);
    font-size: 1.1rem;
}

.footer-column a {
    display: block;
    color: var(--gray-400);
    text-decoration: none;
    padding: var(--space-xs) 0;
    transition: color 0.3s ease;
}

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

.contact-link {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 1.1rem;
}

.footer-bottom {
    border-top: 1px solid var(--gray-800);
    padding-top: var(--space-lg);
    text-align: center;
    color: var(--gray-500);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 3rem;
    }
    
    .plans-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero {
        padding: 120px 0 80px;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--space-lg);
    }
    
    .support-content {
        flex-direction: column;
        text-align: center;
        gap: var(--space-lg);
    }
    
    .support-btn-primary {
        margin-left: 0;
    }
    
    .form-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }
    
    .donation-options {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-md);
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .plans-grid {
        grid-template-columns: 1fr;
    }
    
    .modal-container {
        margin: var(--space-md);
    }
}