/* ============================================
   CSS Variables & Reset
   ============================================ */
:root {
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --primary-light: #3b82f6;
    --secondary-color: #10b981;
    --accent-color: #f59e0b;
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --text-light: #9ca3af;
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-tertiary: #f3f4f6;
    --border-color: #e5e7eb;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
}

/* Dark Mode Colors */
[data-theme="dark"] {
    --text-primary: #f9fafb;
    --text-secondary: #d1d5db;
    --text-light: #9ca3af;
    --bg-primary: #111827;
    --bg-secondary: #1f2937;
    --bg-tertiary: #374151;
    --border-color: #374151;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--text-primary);
    background: var(--bg-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* ============================================
   Navigation
   ============================================ */
.navbar {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

[data-theme="light"] .navbar {
    background: rgba(255, 255, 255, 0.95);
}

[data-theme="dark"] .navbar {
    background: rgba(17, 24, 39, 0.95);
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
}

.logo-icon {
    font-size: 2rem;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    font-size: 0.95rem;
}

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

.btn-nav {
    background: var(--primary-color);
    color: white !important;
    padding: 0.5rem 1.25rem;
    border-radius: var(--radius-lg);
    transition: all 0.3s ease;
}

.btn-nav:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.theme-toggle {
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: 50%;
    width: 2.5rem;
    height: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.theme-toggle:hover {
    transform: scale(1.1);
    border-color: var(--primary-color);
}

.theme-icon {
    font-size: 1.25rem;
    position: absolute;
    transition: all 0.3s ease;
}

.theme-icon.sun {
    opacity: 1;
    transform: rotate(0deg) scale(1);
}

.theme-icon.moon {
    opacity: 0;
    transform: rotate(180deg) scale(0);
}

[data-theme="dark"] .theme-icon.sun {
    opacity: 0;
    transform: rotate(-180deg) scale(0);
}

[data-theme="dark"] .theme-icon.moon {
    opacity: 1;
    transform: rotate(0deg) scale(1);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 0.25rem;
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-menu-toggle span {
    width: 1.5rem;
    height: 2px;
    background: var(--text-primary);
    transition: 0.3s;
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    padding: 5rem 0;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    transition: background 0.3s ease;
}

[data-theme="dark"] .hero {
    background: linear-gradient(135deg, #1f2937 0%, #111827 100%);
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--primary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
}

.btn {
    padding: 0.875rem 2rem;
    border-radius: var(--radius-lg);
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 2px solid transparent;
    cursor: pointer;
    font-size: 1rem;
}

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

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

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

.btn-secondary:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

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

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

.btn-large {
    padding: 1.25rem 3rem;
    font-size: 1.125rem;
    gap: 0.75rem;
}

.hero-stats {
    display: flex;
    gap: 3rem;
}

.stat {
    text-align: left;
}

.stat-number {
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary-color);
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Hero Card */
.hero-card {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: 2rem;
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--border-color);
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.card-title {
    font-weight: 600;
    color: var(--text-primary);
}

.status-badge {
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-md);
    font-size: 0.75rem;
    font-weight: 600;
}

.status-active {
    background: #d1fae5;
    color: #065f46;
}

.domain-item {
    padding: 1rem 0;
    border-bottom: 1px solid var(--bg-tertiary);
}

.domain-item:last-child {
    border-bottom: none;
}

.domain-name {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.isp-status {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.isp-badge {
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 500;
}

.isp-telkomsel {
    background: #fee2e2;
    color: #991b1b;
}

.isp-xl {
    background: #dbeafe;
    color: #1e40af;
}

.isp-indosat {
    background: #fef3c7;
    color: #92400e;
}

.isp-trustpositif {
    background: #e0e7ff;
    color: #3730a3;
}

.isp-badge.blocked {
    background: #dc2626;
    color: white;
}

/* ============================================
   ISP Section
   ============================================ */
.isp-section {
    padding: 3rem 0;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.3s ease;
}

.isp-title {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-weight: 500;
}

.isp-logos {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 3rem;
    flex-wrap: wrap;
}

.isp-logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-light);
    opacity: 0.6;
}

.isp-logo-img {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.isp-logo-img img {
    height: 60px;
    width: auto;
    max-width: 150px;
    object-fit: contain;
    opacity: 0.7;
    filter: grayscale(30%);
    transition: all 0.3s ease;
}

.isp-logo-img img:hover {
    opacity: 1;
    filter: grayscale(0%);
    transform: scale(1.05);
}

[data-theme="dark"] .isp-logo-img img {
    filter: grayscale(30%) brightness(0.9);
}

[data-theme="dark"] .isp-logo-img img:hover {
    filter: grayscale(0%) brightness(1.1);
}

/* ============================================
   Features Section
   ============================================ */
.features {
    padding: 6rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.feature-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2rem;
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.7;
}

.feature-card.feature-coming-soon {
    opacity: 0.85;
    position: relative;
}

.coming-soon-badge {
    background: var(--accent-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-md);
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-left: 0.5rem;
    display: inline-block;
    vertical-align: middle;
}

/* ============================================
   How It Works Section
   ============================================ */
.how-it-works {
    padding: 6rem 0;
    background: var(--bg-secondary);
    transition: background-color 0.3s ease;
}

.steps {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 4rem;
    gap: 1rem;
}

.step {
    flex: 1;
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.step-number {
    background: var(--primary-color);
    color: white;
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.step-content h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

.step-content p {
    color: var(--text-secondary);
    line-height: 1.7;
}

.step-content code {
    background: var(--bg-tertiary);
    padding: 0.125rem 0.375rem;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    color: var(--primary-color);
}

.step-arrow {
    font-size: 2rem;
    color: var(--text-light);
}

/* Commands Section */
.commands-section {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: 3rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.commands-title {
    text-align: center;
    font-size: 1.75rem;
    margin-bottom: 2rem;
}

.commands-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.command-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    border: 1px solid var(--border-color);
}

.command-card code {
    display: block;
    background: var(--primary-color);
    color: white;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-sm);
    margin-bottom: 0.75rem;
    font-weight: 600;
}

.command-card p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* ============================================
   Pricing Section
   ============================================ */
.pricing {
    padding: 6rem 0;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    max-width: 1100px;
    margin: 0 auto;
}

.pricing-card {
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 2.5rem 2rem;
    position: relative;
    transition: all 0.3s ease;
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.pricing-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.pricing-card.pricing-popular {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-lg);
    transform: scale(1.05);
}

.pricing-card.pricing-popular:hover {
    transform: scale(1.05) translateY(-8px);
}

.pricing-badge {
    background: var(--primary-color);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-lg);
    font-size: 0.75rem;
    font-weight: 600;
    position: absolute;
    top: -0.75rem;
    left: 50%;
    transform: translateX(-50%);
    white-space: nowrap;
}

.pricing-badge-free {
    background: var(--secondary-color);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-lg);
    font-size: 0.75rem;
    font-weight: 600;
    position: absolute;
    top: -0.75rem;
    left: 50%;
    transform: translateX(-50%);
    white-space: nowrap;
}

.pricing-card.pricing-free {
    border-color: var(--secondary-color);
    box-shadow: var(--shadow-lg);
}

.pricing-card.pricing-free:hover {
    border-color: var(--secondary-color);
}

.pricing-card.pricing-free .price-amount {
    color: var(--secondary-color);
}

.pricing-icon {
    font-size: 3rem;
    margin: 0 auto;
}

.pricing-plan-name {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.pricing-price {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    padding: 1rem 0;
}

.price-amount {
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary-color);
    line-height: 1;
}

.price-period {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.pricing-domain {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    margin: 0.5rem 0;
}

.domain-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-color);
    line-height: 1;
    margin-bottom: 0.25rem;
}

.domain-label {
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-full {
    width: 100%;
    margin-top: auto;
}

.pricing-note {
    text-align: center;
    margin-top: 3rem;
    padding: 2rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

.pricing-note p {
    margin: 0.5rem 0;
    color: var(--text-secondary);
    font-size: 1rem;
}

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

.pricing-note a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
}

.pricing-note a:hover {
    text-decoration: underline;
}

/* ============================================
   Use Cases Section
   ============================================ */
.use-cases {
    padding: 6rem 0;
    background: var(--bg-secondary);
    transition: background-color 0.3s ease;
}

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.use-case-card {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: 2rem;
    text-align: center;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.use-case-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.use-case-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.use-case-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

.use-case-card p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ============================================
   FAQ Section
   ============================================ */
.faq {
    padding: 6rem 0;
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.faq-item {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: 2rem;
    border: 1px solid var(--border-color);
}

.faq-item h3 {
    font-size: 1.125rem;
    margin-bottom: 0.75rem;
    color: var(--primary-color);
}

.faq-item p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ============================================
   CTA Section
   ============================================ */
.cta {
    padding: 6rem 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
}

[data-theme="dark"] .cta {
    background: linear-gradient(135deg, #1e40af 0%, #1e3a8a 100%);
}

.cta-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.cta h2 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.cta p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.cta-buttons {
    margin-bottom: 1rem;
}

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

.cta .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.2);
}

.btn-arrow {
    transition: transform 0.3s ease;
}

.btn:hover .btn-arrow {
    transform: translateX(4px);
}

.cta-note {
    font-size: 0.875rem;
    opacity: 0.8;
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    padding: 4rem 0 2rem;
    border-top: 1px solid var(--border-color);
    transition: background-color 0.3s ease, color 0.3s ease;
}

[data-theme="dark"] .footer {
    background: #0f172a;
    border-top-color: #1e293b;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.footer-desc {
    color: var(--text-secondary);
    line-height: 1.7;
}

.footer-section h4 {
    margin-bottom: 1rem;
    font-size: 1rem;
    color: var(--text-primary);
}

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

.footer-section ul li {
    margin-bottom: 0.75rem;
}

.footer-section a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-bottom p {
    color: var(--text-secondary);
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
}

.footer-links a:hover {
    color: var(--primary-color);
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .pricing-card.pricing-popular {
        transform: scale(1);
    }
    
    .use-cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .theme-toggle {
        width: 2.25rem;
        height: 2.25rem;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .hero-stats {
        gap: 1.5rem;
    }
    
    .features-grid,
    .use-cases-grid,
    .commands-grid,
    .faq-grid {
        grid-template-columns: 1fr;
    }
    
    .steps {
        flex-direction: column;
    }
    
    .step-arrow {
        transform: rotate(90deg);
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    
    .cta h2 {
        font-size: 2rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }
    
    .hero {
        padding: 3rem 0;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .btn {
        padding: 0.75rem 1.5rem;
    }
    
    .isp-logos {
        gap: 1.5rem;
    }
    
    .isp-logo {
        font-size: 1rem;
    }
}