/* ===== Variables CSS ===== */
:root {
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --text-dark: #1e293b;
    --text-light: #64748b;
    --bg-light: #f8fafc;
    --bg-white: #ffffff;
    --border-color: #e2e8f0;
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

/* ===== Reset & Base ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ===== Navigation ===== */
.navbar {
    background: var(--bg-white);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 1rem 0;
}

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

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
}

.nav-brand i {
    font-size: 1.8rem;
}

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

.nav-menu a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: var(--transition);
}

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

.btn-login {
    background: var(--primary-color);
    color: white !important;
    padding: 0.5rem 1.5rem;
    border-radius: 8px;
}

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

.menu-toggle {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* ===== Hero Section ===== */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 6rem 0;
}

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

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

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

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

.stat {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.9;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.dashboard-preview {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 3rem;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.dashboard-preview i {
    color: rgba(255, 255, 255, 0.8);
}

/* ===== Buttons ===== */
/* Base button styles */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: 2px solid transparent;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
    justify-content: center;
    line-height: 1.5;
    white-space: nowrap;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    pointer-events: none;
}

/* Primary button */
.btn-primary {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.btn-primary:hover:not(:disabled) {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Secondary button */
.btn-secondary {
    background: #6b7280;
    color: white;
    border-color: #6b7280;
}

.btn-secondary:hover:not(:disabled) {
    background: #4b5563;
    border-color: #4b5563;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Success button */
.btn-success {
    background: #10b981;
    color: white;
    border-color: #10b981;
}

.btn-success:hover:not(:disabled) {
    background: #059669;
    border-color: #059669;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Danger button */
.btn-danger {
    background: #ef4444;
    color: white;
    border-color: #ef4444;
}

.btn-danger:hover:not(:disabled) {
    background: #dc2626;
    border-color: #dc2626;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Warning button */
.btn-warning {
    background: #f59e0b;
    color: white;
    border-color: #f59e0b;
}

.btn-warning:hover:not(:disabled) {
    background: #d97706;
    border-color: #d97706;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* White button */
.btn-white {
    background: white;
    color: var(--primary-color);
    border-color: white;
}

.btn-white:hover:not(:disabled) {
    background: #f9fafb;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Outline variants */
.btn-outline {
    background: transparent;
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-outline:hover:not(:disabled) {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-outline-secondary {
    background: transparent;
    color: #6b7280;
    border-color: #6b7280;
}

.btn-outline-secondary:hover:not(:disabled) {
    background: #6b7280;
    color: white;
}

.btn-outline-danger {
    background: transparent;
    color: #ef4444;
    border-color: #ef4444;
}

.btn-outline-danger:hover:not(:disabled) {
    background: #ef4444;
    color: white;
}

/* Ghost button (no border) */
.btn-ghost {
    background: transparent;
    border-color: transparent;
    color: var(--primary-color);
}

.btn-ghost:hover:not(:disabled) {
    background: rgba(103, 126, 234, 0.1);
}

/* Link button */
.btn-link {
    background: transparent;
    border-color: transparent;
    color: var(--primary-color);
    text-decoration: underline;
    padding: 0.5rem 1rem;
}

.btn-link:hover:not(:disabled) {
    color: var(--primary-dark);
    text-decoration: underline;
    transform: none;
}

/* Size modifiers */
.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

.btn-xl {
    padding: 1.25rem 2.5rem;
    font-size: 1.25rem;
}

/* Block button */
.btn-block {
    width: 100%;
    display: flex;
}

/* Icon buttons */
.btn-icon {
    padding: 0.75rem;
    aspect-ratio: 1;
}

.btn-icon.btn-sm {
    padding: 0.5rem;
}

.btn-icon.btn-lg {
    padding: 1rem;
}

/* Button group */
.btn-group {
    display: inline-flex;
    gap: 0.5rem;
}

.btn-group .btn {
    margin: 0;
}

/* Loading state */
.btn.loading {
    position: relative;
    color: transparent;
    pointer-events: none;
}

.btn.loading::after {
    content: '';
    position: absolute;
    width: 1rem;
    height: 1rem;
    top: 50%;
    left: 50%;
    margin-left: -0.5rem;
    margin-top: -0.5rem;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: button-spin 0.6s linear infinite;
}

@keyframes button-spin {
    to { transform: rotate(360deg); }
}

/* ===== Sections ===== */
section {
    padding: 5rem 0;
}

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

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.section-header p {
    font-size: 1.2rem;
    color: var(--text-light);
}

/* ===== Features ===== */
.features {
    background: var(--bg-light);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.feature-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.feature-icon i {
    font-size: 2rem;
    color: white;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.feature-card p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

.feature-list {
    list-style: none;
}

.feature-list li {
    padding: 0.5rem 0;
    color: var(--text-light);
}

.feature-list i {
    color: var(--success-color);
    margin-right: 0.5rem;
}

/* ===== Security ===== */
.security {
    background: var(--text-dark);
    color: white;
}

.security .section-header h2,
.security .section-header p {
    color: white;
}

.security-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
    align-items: center;
}

.score-circle {
    width: 250px;
    height: 250px;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea, #764ba2);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.score-value {
    font-size: 4rem;
    font-weight: 800;
}

.score-label {
    font-size: 1.2rem;
    opacity: 0.9;
}

.security-features {
    display: grid;
    gap: 1.5rem;
}

.security-item {
    display: flex;
    gap: 1.5rem;
    align-items: start;
    background: rgba(255, 255, 255, 0.05);
    padding: 1.5rem;
    border-radius: 12px;
    transition: var(--transition);
}

.security-item:hover {
    background: rgba(255, 255, 255, 0.1);
}

.security-item i {
    font-size: 2rem;
    color: var(--success-color);
    flex-shrink: 0;
}

.security-item h4 {
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
}

.security-item p {
    opacity: 0.8;
    font-size: 0.95rem;
}

/* ===== Pricing ===== */
.pricing {
    background: var(--bg-light);
}

.pricing-card-wrapper {
    display: flex;
    justify-content: center;
    margin-bottom: 4rem;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-bottom: 4rem;
    align-items: start;
}

.pricing-card {
    background: white;
    border-radius: 16px;
    padding: 2.5rem;
    box-shadow: var(--shadow-lg);
    position: relative;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.pricing-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.pricing-card.featured {
    border: 3px solid var(--primary-color);
}

.pricing-card.featured:hover {
    transform: translateY(-5px);
}

.pricing-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, var(--warning-color), #dc2626);
    color: white;
    padding: 0.5rem 2rem;
    border-radius: 20px;
    font-weight: 700;
    font-size: 0.9rem;
}

.pricing-header {
    text-align: center;
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 2px solid var(--border-color);
}

.pricing-header h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.pricing-price {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.pricing-price .currency {
    font-size: 2rem;
    color: var(--text-light);
}

.pricing-price .amount {
    font-size: 4rem;
    font-weight: 800;
    color: var(--primary-color);
}

.pricing-price .period {
    font-size: 1.5rem;
    color: var(--text-light);
}

.pricing-subtitle {
    margin-top: 0.5rem;
    color: var(--text-light);
}

.pricing-features {
    flex: 1;
    margin-bottom: 2rem;
}

.pricing-features h4 {
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
    color: var(--text-dark);
}

.pricing-features ul {
    list-style: none;
}

.pricing-features li {
    padding: 0.7rem 0;
    display: flex;
    align-items: start;
    gap: 0.75rem;
    font-size: 0.95rem;
}

.pricing-features i {
    color: var(--success-color);
    font-size: 1.1rem;
    flex-shrink: 0;
    margin-top: 0.15rem;
}

.pricing-cta {
    margin-top: auto;
}

.pricing-note {
    text-align: center;
    margin-top: 1rem;
    color: var(--text-light);
    font-size: 0.9rem;
}

.pricing-faq {
    max-width: 900px;
    margin: 0 auto;
}

.pricing-faq h3 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 2rem;
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.faq-item {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.faq-item h4 {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

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

.faq-item code {
    background: var(--bg-light);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-family: monospace;
    color: var(--primary-color);
}

/* ===== CTA Section ===== */
.cta-section {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    text-align: center;
    padding: 5rem 0;
}

.cta-content h2 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.cta-content p {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

/* ===== Contact ===== */
.contact {
    background: var(--bg-light);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-item {
    display: flex;
    gap: 1.5rem;
    align-items: start;
}

.contact-item i {
    font-size: 2rem;
    color: var(--primary-color);
    width: 50px;
    height: 50px;
    background: var(--bg-white);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-item h4 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.contact-item p {
    color: var(--text-light);
}

.contact-form {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: var(--transition);
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* ===== Footer ===== */
.footer {
    background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
    color: white;
    padding: 4rem 0 0;
    margin-top: 4rem;
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(99, 102, 241, 0.5), transparent);
}

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

.footer-section,
.footer-col {
    animation: fadeInUp 0.6s ease;
}

.footer-section h3,
.footer-section h4,
.footer-col h4 {
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
    color: white;
    font-weight: 600;
    position: relative;
    padding-bottom: 0.75rem;
}

.footer-section h3::after,
.footer-section h4::after,
.footer-col h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 2px;
}

.footer-section p,
.footer-col p {
    opacity: 0.85;
    line-height: 1.8;
    margin-bottom: 1.5rem;
    color: #cbd5e1;
}

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

.footer-section ul li,
.footer-col ul li {
    margin-bottom: 0.875rem;
}

.footer-section ul a,
.footer-col ul a {
    color: #cbd5e1;
    text-decoration: none;
    opacity: 0.85;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.95rem;
}

.footer-section ul a::before,
.footer-col ul a::before {
    content: '→';
    opacity: 0;
    transform: translateX(-5px);
    transition: all 0.3s ease;
}

.footer-section ul a:hover,
.footer-col ul a:hover {
    opacity: 1;
    color: var(--primary-color);
    padding-left: 0.5rem;
}

.footer-section ul a:hover::before,
.footer-col ul a:hover::before {
    opacity: 1;
    transform: translateX(0);
}

.social-links {
    display: flex;
    gap: 0.75rem;
    margin-top: 1.5rem;
}

.social-links a {
    width: 42px;
    height: 42px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
    font-size: 1.1rem;
}

.social-links a:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    transform: translateY(-4px);
    box-shadow: 0 8px 16px rgba(99, 102, 241, 0.3);
}

.footer-bottom {
    text-align: center;
    padding: 2rem 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(0, 0, 0, 0.2);
}

.footer-bottom p {
    opacity: 0.75;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    color: #94a3b8;
}

.footer-bottom p strong {
    color: #22c55e;
    font-weight: 600;
}

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

/* ===== Responsive ===== */
@media (max-width: 968px) {
    .nav-menu {
        display: none;
    }

    .menu-toggle {
        display: block;
    }

    .hero .container {
        grid-template-columns: 1fr;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .pricing-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .security-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .score-circle {
        margin: 0 auto;
    }

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

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

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

@media (max-width: 640px) {
    .hero-title {
        font-size: 2rem;
    }

    .hero-cta {
        flex-direction: column;
    }

    .hero-stats {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .section-header h2 {
        font-size: 2rem;
    }

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

    .footer-grid,
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }

    .footer {
        padding: 3rem 0 0;
    }

    .footer-bottom p {
        font-size: 0.85rem;
    }
}