/* ========================================
   Reset and Base Styles
   ======================================== */

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

:root {
    /* Colors */
    --primary-600: #6366f1;
    --primary-700: #5558e3;
    --primary-800: #4a4dd5;
    --secondary-600: #8b5cf6;
    --secondary-700: #7c3aed;
    
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    --white: #ffffff;
    --black: #000000;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    
    /* Spacing */
    --container-width: 1200px;
    --section-padding: 100px 0;
    
    /* 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);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    
    /* Transitions */
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    color: var(--gray-800);
    line-height: 1.6;
    background: var(--white);
    overflow-x: hidden;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

/* ========================================
   Typography
   ======================================== */

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: 16px;
    line-height: 1.2;
}

.section-description {
    font-size: 1.125rem;
    color: var(--gray-600);
    max-width: 700px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary-600), var(--secondary-600));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ========================================
   Buttons
   ======================================== */

.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
    text-align: center;
}

.btn--primary {
    background: linear-gradient(135deg, var(--primary-600), var(--secondary-600));
    color: var(--white);
}

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

.btn--secondary {
    background: var(--gray-100);
    color: var(--gray-800);
}

.btn--secondary:hover {
    background: var(--gray-200);
}

.btn--outline {
    background: transparent;
    border-color: var(--primary-600);
    color: var(--primary-600);
}

.btn--outline:hover {
    background: var(--primary-600);
    color: var(--white);
}

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

.btn--outline-white:hover {
    background: var(--white);
    color: var(--primary-600);
}

.btn--large {
    padding: 16px 36px;
    font-size: 1.125rem;
}

.btn--full {
    width: 100%;
}

/* ========================================
   Header & Navigation
   ======================================== */

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--gray-200);
    transition: var(--transition);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
}

.nav__logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--gray-900);
}

.nav__brand {
    background: linear-gradient(135deg, var(--primary-600), var(--secondary-600));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav__menu {
    display: flex;
    gap: 32px;
}

.nav__link {
    color: var(--gray-700);
    font-weight: 500;
    position: relative;
}

.nav__link:hover {
    color: var(--primary-600);
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-600);
    transition: var(--transition);
}

.nav__link:hover::after {
    width: 100%;
}

.nav__buttons {
    display: flex;
    gap: 12px;
}

.nav__toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav__toggle span {
    width: 25px;
    height: 2px;
    background: var(--gray-800);
    transition: var(--transition);
}

/* ========================================
   Hero Section
   ======================================== */

.hero {
    padding: 140px 0 100px;
    background: linear-gradient(135deg, #f8f9ff 0%, #f0f0ff 100%);
    overflow: hidden;
}

.hero__container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero__badge {
    margin-bottom: 24px;
}

.badge {
    display: inline-block;
    padding: 8px 16px;
    background: var(--white);
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary-600);
    box-shadow: var(--shadow-md);
}

.hero__title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    color: var(--gray-900);
    margin-bottom: 24px;
}

.hero__description {
    font-size: 1.25rem;
    color: var(--gray-600);
    margin-bottom: 32px;
    line-height: 1.7;
}

.hero__cta {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
}

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

.stat {
    text-align: center;
}

.stat__number {
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary-600);
    line-height: 1;
}

.stat__label {
    font-size: 0.875rem;
    color: var(--gray-600);
    margin-top: 4px;
}

.hero__visual {
    position: relative;
    height: 500px;
}

.cloud-illustration {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.cloud-illustration svg {
    width: 100%;
    height: auto;
    filter: drop-shadow(0 20px 40px rgba(99, 102, 241, 0.2));
}

.floating-card {
    position: absolute;
    background: var(--white);
    padding: 16px 20px;
    border-radius: 12px;
    box-shadow: var(--shadow-xl);
    display: flex;
    align-items: center;
    gap: 12px;
    animation: float 3s ease-in-out infinite;
}

.floating-card.card-1 {
    top: 10%;
    right: 10%;
    animation-delay: 0s;
}

.floating-card.card-2 {
    top: 50%;
    left: 0%;
    animation-delay: 1s;
}

.floating-card.card-3 {
    bottom: 15%;
    right: 5%;
    animation-delay: 2s;
}

.card-icon {
    font-size: 1.5rem;
}

.card-text {
    font-weight: 600;
    color: var(--gray-800);
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-20px);
    }
}

/* ========================================
   Features Section
   ======================================== */

.features {
    padding: var(--section-padding);
    background: var(--white);
}

.features__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 32px;
}

.feature-card {
    padding: 32px;
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: 16px;
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-600);
}

.feature-card__icon {
    margin-bottom: 20px;
}

.feature-card__title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 12px;
}

.feature-card__description {
    color: var(--gray-600);
    line-height: 1.7;
}

/* ========================================
   Pricing Section
   ======================================== */

.pricing {
    padding: var(--section-padding);
    background: var(--gray-50);
}

.pricing__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
    max-width: 1100px;
    margin: 0 auto;
}

.pricing-card {
    background: var(--white);
    border: 2px solid var(--gray-200);
    border-radius: 20px;
    padding: 40px;
    position: relative;
    transition: var(--transition);
}

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

.pricing-card--featured {
    border-color: var(--primary-600);
    background: linear-gradient(135deg, #f8f9ff 0%, #ffffff 100%);
}

.pricing-card__badge {
    position: absolute;
    top: -16px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, var(--primary-600), var(--secondary-600));
    color: var(--white);
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 700;
}

.pricing-card__header {
    text-align: center;
    margin-bottom: 32px;
    padding-bottom: 32px;
    border-bottom: 1px solid var(--gray-200);
}

.pricing-card__name {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 16px;
}

.pricing-card__price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    margin-bottom: 12px;
}

.price__currency {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-600);
}

.price__amount {
    font-size: 4rem;
    font-weight: 800;
    color: var(--gray-900);
    line-height: 1;
}

.price__period {
    font-size: 1rem;
    color: var(--gray-600);
    margin-left: 4px;
}

.pricing-card__description {
    color: var(--gray-600);
}

.pricing-card__features {
    margin-bottom: 32px;
}

.pricing-card__features li {
    padding: 12px 0;
    color: var(--gray-700);
    line-height: 1.6;
}

/* ========================================
   Security Section
   ======================================== */

.security {
    padding: var(--section-padding);
    background: var(--white);
}

.security__content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.security__text .section-title,
.security__text .section-description {
    text-align: left;
    margin-left: 0;
}

.security__features {
    margin-top: 40px;
    display: grid;
    gap: 24px;
}

.security__feature {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.security__icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.security__feature h4 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 4px;
}

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

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

.security__shield svg {
    width: 100%;
    max-width: 300px;
    height: auto;
    animation: pulse 3s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

/* ========================================
   Testimonials Section
   ======================================== */

.testimonials {
    padding: var(--section-padding);
    background: var(--gray-50);
}

.testimonials__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
}

.testimonial-card {
    background: var(--white);
    padding: 32px;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

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

.testimonial__rating {
    color: #fbbf24;
    font-size: 1.25rem;
    margin-bottom: 16px;
}

.testimonial__text {
    color: var(--gray-700);
    line-height: 1.7;
    margin-bottom: 24px;
    font-style: italic;
}

.testimonial__author {
    display: flex;
    align-items: center;
    gap: 12px;
}

.author__avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-600), var(--secondary-600));
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    flex-shrink: 0;
}

.author__name {
    font-weight: 700;
    color: var(--gray-900);
}

.author__role {
    font-size: 0.875rem;
    color: var(--gray-600);
}

/* ========================================
   CTA Section
   ======================================== */

.cta {
    padding: var(--section-padding);
    background: linear-gradient(135deg, var(--primary-600), var(--secondary-600));
    text-align: center;
}

.cta__content {
    max-width: 800px;
    margin: 0 auto;
}

.cta__title {
    font-size: 3rem;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 20px;
}

.cta__description {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 40px;
}

.cta__buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 24px;
}

.cta__note {
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.875rem;
}

/* ========================================
   Footer
   ======================================== */

.footer {
    background: var(--gray-900);
    color: var(--gray-300);
    padding: 80px 0 32px;
}

.footer__grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 60px;
}

.footer__logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--white);
    margin-bottom: 16px;
}

.footer__description {
    color: var(--gray-400);
    margin-bottom: 24px;
    line-height: 1.7;
}

.footer__social {
    display: flex;
    gap: 16px;
}

.footer__social a {
    color: var(--gray-400);
    font-weight: 500;
}

.footer__social a:hover {
    color: var(--primary-600);
}

.footer__links h4 {
    color: var(--white);
    font-weight: 700;
    margin-bottom: 16px;
}

.footer__links ul {
    display: grid;
    gap: 12px;
}

.footer__links a {
    color: var(--gray-400);
}

.footer__links a:hover {
    color: var(--primary-600);
}

.footer__bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 32px;
    border-top: 1px solid var(--gray-800);
}

.footer__certifications {
    display: flex;
    gap: 12px;
}

.cert-badge {
    padding: 6px 12px;
    background: var(--gray-800);
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--gray-300);
}

/* ========================================
   Responsive Design
   ======================================== */

@media (max-width: 1024px) {
    .hero__container {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .hero__visual {
        height: 400px;
    }
    
    .hero__title {
        font-size: 2.5rem;
    }
    
    .security__content {
        grid-template-columns: 1fr;
        gap: 60px;
    }
    
    .footer__grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer__brand {
        grid-column: 1 / -1;
    }
}

@media (max-width: 768px) {
    .nav__menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: var(--white);
        flex-direction: column;
        padding: 40px;
        transition: var(--transition);
        box-shadow: var(--shadow-lg);
    }
    
    .nav__menu.active {
        left: 0;
    }
    
    .nav__buttons {
        display: none;
    }
    
    .nav__toggle {
        display: flex;
    }
    
    .nav__toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(8px, 8px);
    }
    
    .nav__toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .nav__toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }
    
    .hero__title {
        font-size: 2rem;
    }
    
    .hero__description {
        font-size: 1rem;
    }
    
    .hero__cta {
        flex-direction: column;
    }
    
    .hero__stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .features__grid {
        grid-template-columns: 1fr;
    }
    
    .pricing__grid {
        grid-template-columns: 1fr;
    }
    
    .testimonials__grid {
        grid-template-columns: 1fr;
    }
    
    .cta__title {
        font-size: 2rem;
    }
    
    .cta__buttons {
        flex-direction: column;
    }
    
    .footer__grid {
        grid-template-columns: 1fr;
    }
    
    .footer__bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero__title {
        font-size: 1.75rem;
    }
    
    .stat__number {
        font-size: 1.5rem;
    }
    
    .floating-card {
        padding: 12px 16px;
        font-size: 0.875rem;
    }
    
    .card-icon {
        font-size: 1.25rem;
    }
}

/* ========================================
   Accessibility
   ======================================== */

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

/* Focus styles for keyboard navigation */
a:focus,
button:focus {
    outline: 2px solid var(--primary-600);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .btn {
        border-width: 3px;
    }
}