/* RouteDNS - Modern Minimalist Design */

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

:root {
    --bg-primary: #fafafa;
    --bg-secondary: #ffffff;
    --bg-card: #ffffff;
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    --accent: #0ea5e9;
    --accent-hover: #0284c7;
    --accent-light: #e0f2fe;
    --border: #e2e8f0;
    --border-light: #f1f5f9;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
    --success: #10b981;
    --error: #ef4444;
    --warning: #f59e0b;
    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 16px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 24px;
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: color 0.2s;
}

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

/* Navigation */
.navbar {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-light);
    padding: 0;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 72px;
}

.logo {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.logo a {
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo a::before {
    content: "◆";
    color: var(--accent);
    font-size: 1rem;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 8px;
    align-items: center;
}

.nav-menu a {
    color: var(--text-secondary);
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.938rem;
    font-weight: 500;
    transition: all 0.2s;
}

.nav-menu a:hover {
    color: var(--text-primary);
    background: var(--border-light);
}

.nav-menu a.btn-primary {
    background: var(--text-primary);
    color: white;
    padding: 10px 20px;
}

.nav-menu a.btn-primary:hover {
    background: #1e293b;
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-primary);
    padding: 8px;
}

.theme-toggle {
    display: none;
}

/* Buttons */
.btn {
    padding: 12px 24px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.938rem;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: none;
}

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

.btn-primary:hover {
    background: #1e293b;
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: var(--border-light);
    border-color: var(--text-muted);
}

.btn-large {
    padding: 16px 32px;
    font-size: 1rem;
    border-radius: var(--radius);
}

.btn-block {
    width: 100%;
}

/* Hero Section */
.hero {
    padding: 160px 0 100px;
    text-align: center;
    background: var(--bg-secondary);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: "";
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    max-width: 800px;
    height: 400px;
    background: radial-gradient(ellipse at center, var(--accent-light) 0%, transparent 70%);
    opacity: 0.6;
    pointer-events: none;
}

.hero .container {
    position: relative;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    letter-spacing: -1.5px;
    line-height: 1.1;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 540px;
    margin: 0 auto 12px;
}

.hero-subtitle {
    font-size: 1rem !important;
    color: var(--text-muted) !important;
    margin-bottom: 40px !important;
}

.hero-note {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-top: 16px;
}

.hero-buttons {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

/* Features Section */
.features {
    padding: 100px 0;
    background: var(--bg-primary);
}

.section-title {
    text-align: center;
    font-size: 2.25rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    margin-bottom: 16px;
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.125rem;
    margin-bottom: 64px;
    max-width: 540px;
    margin-left: auto;
    margin-right: auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.feature-card {
    background: var(--bg-secondary);
    padding: 32px 24px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
    transition: all 0.3s;
}

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

.feature-icon {
    width: 48px;
    height: 48px;
    background: var(--accent-light);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.063rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.938rem;
    line-height: 1.6;
}

/* How It Works */
.how-it-works {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 48px;
    position: relative;
}

.steps-grid::before {
    content: "";
    position: absolute;
    top: 28px;
    left: 15%;
    right: 15%;
    height: 2px;
    background: var(--border);
}

.step {
    text-align: center;
    position: relative;
}

.step-number {
    width: 56px;
    height: 56px;
    background: var(--bg-secondary);
    border: 2px solid var(--border);
    color: var(--text-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 700;
    margin: 0 auto 20px;
    position: relative;
    z-index: 1;
    transition: all 0.3s;
}

.step:hover .step-number {
    background: var(--text-primary);
    color: white;
    border-color: var(--text-primary);
}

.step h3 {
    font-size: 1.063rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.step p {
    color: var(--text-secondary);
    font-size: 0.938rem;
}

/* Stats Section */
.stats {
    padding: 80px 0;
    background: var(--text-primary);
    color: white;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 48px;
    text-align: center;
}

.stat h3 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 8px;
    letter-spacing: -1px;
}

.stat p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.938rem;
}

/* CTA Section */
.cta {
    padding: 100px 0;
    text-align: center;
    background: var(--bg-primary);
}

.cta h2 {
    font-size: 2.25rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    margin-bottom: 16px;
}

.cta p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-light);
    padding: 64px 0 32px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: 48px;
    margin-bottom: 48px;
}

.footer-section h4 {
    font-size: 0.813rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    margin-bottom: 16px;
}

.footer-section:first-child h4 {
    font-size: 1.125rem;
    text-transform: none;
    letter-spacing: -0.5px;
    color: var(--text-primary);
}

.footer-section p {
    color: var(--text-secondary);
    font-size: 0.938rem;
    max-width: 280px;
}

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

.footer-section ul li {
    margin-bottom: 12px;
}

.footer-section a {
    color: var(--text-secondary);
    font-size: 0.938rem;
    transition: color 0.2s;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 32px;
    border-top: 1px solid var(--border-light);
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Auth Container */
.auth-container {
    min-height: 100vh;
    display: flex;
    background: var(--bg-primary);
}

.auth-left {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 48px;
    max-width: 480px;
    margin: 0 auto;
}

.auth-right {
    flex: 1;
    background: linear-gradient(135deg, #0ea5e9 0%, #0284c7 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 48px;
    position: relative;
    overflow: hidden;
}

.auth-right::before {
    content: "";
    position: absolute;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    top: -100px;
    right: -100px;
}

.auth-right::after {
    content: "";
    position: absolute;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    bottom: -50px;
    left: -50px;
}

.auth-right-content {
    position: relative;
    z-index: 1;
    color: white;
    text-align: center;
    max-width: 400px;
}

.auth-right-content h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.auth-right-content p {
    opacity: 0.9;
    font-size: 1.063rem;
    line-height: 1.6;
}

.auth-logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 48px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.auth-logo::before {
    content: "◆";
    color: var(--accent);
}

.auth-header {
    margin-bottom: 32px;
}

.auth-header h1 {
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    margin-bottom: 8px;
}

.auth-header p {
    color: var(--text-secondary);
}

.auth-form {
    margin-bottom: 24px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    font-size: 0.875rem;
    color: var(--text-primary);
}

.form-group input {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    background: var(--bg-secondary);
    color: var(--text-primary);
    transition: all 0.2s;
}

.form-group input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-light);
}

.form-group input::placeholder {
    color: var(--text-muted);
}

.form-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.checkbox-label input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--accent);
}

.forgot-link {
    color: var(--accent);
    font-size: 0.875rem;
    font-weight: 500;
}

.auth-footer {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.938rem;
}

.auth-footer a {
    color: var(--accent);
    font-weight: 600;
}

/* Password Strength */
.password-strength {
    margin-top: 8px;
}

.strength-meter {
    width: 100%;
    height: 4px;
    background: var(--border);
    border-radius: 2px;
    overflow: hidden;
    margin-bottom: 6px;
}

.strength-meter-fill {
    height: 100%;
    width: 0%;
    transition: all 0.3s;
    border-radius: 2px;
}

.strength-text {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Messages */
.error-message,
.success-message {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    margin-top: 16px;
    font-size: 0.875rem;
    font-weight: 500;
}

.error-message {
    background: #fef2f2;
    color: var(--error);
    border: 1px solid #fecaca;
}

.success-message {
    background: #ecfdf5;
    color: var(--success);
    border: 1px solid #a7f3d0;
}

/* Pricing */
.pricing-header {
    text-align: center;
    padding: 140px 0 60px;
    background: var(--bg-secondary);
}

.pricing-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: -1px;
    margin-bottom: 16px;
}

.pricing-header p {
    color: var(--text-secondary);
    font-size: 1.125rem;
}

.pricing-toggle {
    margin-top: 32px;
    display: inline-flex;
    background: var(--border-light);
    border-radius: var(--radius-sm);
    padding: 4px;
}

.toggle-btn {
    padding: 10px 24px;
    border: none;
    background: transparent;
    cursor: pointer;
    border-radius: 6px;
    font-weight: 500;
    font-size: 0.938rem;
    color: var(--text-secondary);
    transition: all 0.2s;
}

.toggle-btn.active {
    background: var(--bg-secondary);
    color: var(--text-primary);
    box-shadow: var(--shadow-sm);
}

.badge {
    background: var(--success);
    color: white;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.688rem;
    font-weight: 600;
    margin-left: 8px;
    text-transform: uppercase;
}

.pricing {
    padding: 60px 0 100px;
    background: var(--bg-primary);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.pricing-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 32px;
    position: relative;
    transition: all 0.3s;
}

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

.pricing-card.featured {
    border-color: var(--accent);
    box-shadow: 0 0 0 1px var(--accent);
}

.plan-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent);
    color: white;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.plan-header {
    text-align: center;
    margin-bottom: 32px;
    padding-bottom: 32px;
    border-bottom: 1px solid var(--border-light);
}

.plan-header h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 16px;
}

.plan-desc {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-top: 8px;
}

.plan-total {
    color: var(--text-muted);
    font-size: 0.813rem;
    margin-top: 8px;
    display: none;
}

.price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 4px;
}

.plan-features ul {
    list-style: none;
    margin-bottom: 32px;
}

.plan-features li {
    padding: 12px 0;
    font-size: 0.938rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 12px;
}

.plan-features li::before {
    content: "✓";
    color: var(--success);
    font-weight: 600;
}

.plan-features li:last-child {
    border-bottom: none;
}

.faq {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.faq-item {
    background: var(--bg-primary);
    padding: 24px;
    border-radius: var(--radius);
    border: 1px solid var(--border-light);
}

.faq-item h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.faq-item p {
    color: var(--text-secondary);
    font-size: 0.938rem;
}

/* Responsive */
@media (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .steps-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 32px;
    }

    .steps-grid::before {
        display: none;
    }

    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .pricing-toggle {
        flex-wrap: wrap;
        gap: 8px;
    }

    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .navbar .container {
        height: 64px;
    }

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

    .nav-menu {
        display: none;
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--bg-secondary);
        flex-direction: column;
        padding: 24px;
        gap: 8px;
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-menu a {
        display: block;
        padding: 16px;
        text-align: center;
        border-radius: var(--radius-sm);
    }

    .hero {
        padding: 120px 0 80px;
    }

    .hero h1 {
        font-size: 2.25rem;
    }

    .hero p {
        font-size: 1.063rem;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .features,
    .how-it-works,
    .cta,
    .faq {
        padding: 64px 0;
    }

    .features-grid,
    .steps-grid,
    .pricing-grid,
    .faq-grid {
        grid-template-columns: 1fr;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 32px;
    }

    .stat h3 {
        font-size: 2rem;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 32px;
        text-align: center;
    }

    .footer-section p {
        max-width: 100%;
    }

    /* Auth responsive */
    .auth-container {
        flex-direction: column;
    }

    .auth-left {
        padding: 32px 24px;
        max-width: 100%;
    }

    .auth-right {
        display: none;
    }

    .auth-logo {
        margin-bottom: 32px;
    }

    .form-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }

    .pricing-header {
        padding: 100px 0 40px;
    }

    .pricing-header h1 {
        font-size: 1.75rem;
    }

    .pricing-toggle {
        flex-direction: column;
        width: 100%;
        max-width: 280px;
        margin: 32px auto 0;
    }

    .toggle-btn {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.875rem;
    }

    .btn-large {
        width: 100%;
    }

    .hero-buttons {
        flex-direction: column;
        width: 100%;
        padding: 0 24px;
    }
}