/* ===== CSS Variables ===== */
:root {
  /* Colors */
  --color-primary: #2563eb;
  --color-primary-dark: #1d4ed8;
  --color-accent: #f59e0b;
  --color-background: #fafaf9;
  --color-surface: #ffffff;
  --color-text-primary: #111111;
  --color-text-secondary: #4b5563;
  --color-text-muted: #9ca3af;
  --color-border: #e5e7eb;
  --color-success: #10b981;
  --color-error: #ef4444;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #2563eb 0%, #7c3aed 100%);
  --gradient-hero: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 50%, #f0f9ff 100%);
  --gradient-blob-1: radial-gradient(circle at 20% 30%, rgba(37, 99, 235, 0.15) 0%, transparent 50%);
  --gradient-blob-2: radial-gradient(circle at 80% 70%, rgba(124, 58, 237, 0.15) 0%, transparent 50%);

  /* Typography */
  --font-heading: 'Syne', sans-serif;
  --font-body: 'DM Sans', sans-serif;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --spacing-3xl: 6rem;

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-pill: 9999px;

  /* 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);

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;

  /* Layout */
  --container-max: 1200px;
  --header-height: 80px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

ul {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* ===== Utility Classes ===== */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.section {
  padding: var(--spacing-3xl) 0;
}

.section__header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--spacing-2xl);
}

.section__title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-primary);
}

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

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 1rem;
  border-radius: var(--radius-pill);
  transition: all var(--transition-base);
  cursor: pointer;
  border: 2px solid transparent;
  min-height: 44px;
  min-width: 44px;
}

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

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, #6d28d9 100%);
}

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

.btn--outline:hover {
  background: rgba(37, 99, 235, 0.05);
  transform: translateY(-2px);
}

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

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

/* ===== Header & Navigation ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 1000;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: all var(--transition-base);
}

.header.scrolled {
  background: rgba(255, 255, 255, 0.98);
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--color-text-primary);
}

.logo-icon {
  font-size: 1.75rem;
}

.nav__menu {
  display: flex;
  align-items: center;
}

.nav__list {
  display: flex;
  gap: var(--spacing-lg);
}

.nav__link {
  font-weight: 500;
  color: var(--color-text-secondary);
  position: relative;
  padding: var(--spacing-xs) 0;
}

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

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

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

.nav__close {
  display: none;
}

.nav__toggle {
  display: none;
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

/* Mobile Navigation */
@media (max-width: 768px) {
  .nav__menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 300px;
    height: 100vh;
    background: var(--color-surface);
    flex-direction: column;
    justify-content: center;
    box-shadow: var(--shadow-xl);
    transition: right var(--transition-base);
    z-index: 1001;
  }

  .nav__menu.show {
    right: 0;
  }

  .nav__list {
    flex-direction: column;
    gap: var(--spacing-lg);
    text-align: center;
  }

  .nav__close {
    display: block;
    position: absolute;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    color: var(--color-text-secondary);
  }

  .nav__toggle {
    display: block;
    color: var(--color-text-primary);
  }

  .nav__actions .btn {
    display: none;
  }
}

/* ===== Hero Section ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--header-height);
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background: var(--gradient-hero);
  z-index: -1;
}

.hero__blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.6;
}

.hero__blob--1 {
  width: 400px;
  height: 400px;
  background: var(--gradient-blob-1);
  top: 10%;
  left: 10%;
}

.hero__blob--2 {
  width: 500px;
  height: 500px;
  background: var(--gradient-blob-2);
  bottom: 10%;
  right: 10%;
}

.hero__container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
  align-items: center;
}

.hero__title {
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: var(--spacing-md);
  color: var(--color-text-primary);
}

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

.hero__subtitle {
  font-size: 1.25rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-lg);
  max-width: 500px;
}

.hero__actions {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.hero__visual {
  position: relative;
  height: 400px;
}

.hero__card {
  position: absolute;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  animation: float 6s ease-in-out infinite;
}

.hero__card--1 {
  top: 20%;
  left: 10%;
  animation-delay: 0s;
}

.hero__card--2 {
  top: 40%;
  right: 10%;
  animation-delay: 2s;
}

.hero__card--3 {
  bottom: 20%;
  left: 30%;
  animation-delay: 4s;
}

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

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

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

@media (max-width: 968px) {
  .hero__container {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero__subtitle {
    margin: 0 auto var(--spacing-lg);
  }

  .hero__actions {
    justify-content: center;
  }

  .hero__visual {
    display: none;
  }
}

/* ===== Logos Section ===== */
.logos {
  padding: var(--spacing-xl) 0;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.logos__title {
  text-align: center;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-md);
}

.logos__list {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--spacing-xl);
}

.logo-item {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-text-muted);
  opacity: 0.7;
  transition: opacity var(--transition-fast);
}

.logo-item:hover {
  opacity: 1;
}

/* ===== Features Section ===== */
.features {
  background: var(--color-background);
}

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

.feature-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
  border: 1px solid var(--color-border);
}

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

.feature-card__icon {
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(37, 99, 235, 0.1);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
  color: var(--color-primary);
}

.feature-card__title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-primary);
}

.feature-card__desc {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
}

/* ===== Process Section ===== */
.process {
  background: var(--color-surface);
}

.process__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
  position: relative;
}

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

.process__number {
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-primary);
  color: white;
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  border-radius: 50%;
  margin: 0 auto var(--spacing-md);
  box-shadow: var(--shadow-md);
}

.process__title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-primary);
}

.process__desc {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
}

/* ===== Stats Section ===== */
.stats {
  background: var(--gradient-primary);
  color: white;
  padding: var(--spacing-2xl) 0;
}

.stats__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-xl);
  text-align: center;
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.stat-number {
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1;
  margin-bottom: var(--spacing-xs);
}

.stat-suffix {
  font-family: var(--font-heading);
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  font-weight: 600;
}

.stat-label {
  font-size: 1rem;
  opacity: 0.9;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ===== Testimonials Section ===== */
.testimonials {
  background: var(--color-background);
}

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

.testimonial-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: all var(--transition-base);
}

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

.testimonial-card__content {
  margin-bottom: var(--spacing-md);
}

.testimonial-card__quote {
  font-size: 1rem;
  color: var(--color-text-secondary);
  font-style: italic;
  line-height: 1.7;
}

.testimonial-card__author {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.author-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--gradient-primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.875rem;
}

.author-name {
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: 0.25rem;
}

.author-role {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* ===== Pricing Section ===== */
.pricing {
  background: var(--color-surface);
}

.pricing__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  align-items: start;
}

.pricing-card {
  background: var(--color-background);
  border-radius: var(--radius-xl);
  padding: var(--spacing-lg);
  border: 1px solid var(--color-border);
  position: relative;
  transition: all var(--transition-base);
}

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

.pricing-card--featured {
  background: var(--color-surface);
  border: 2px solid var(--color-primary);
  box-shadow: var(--shadow-xl);
  transform: scale(1.05);
}

.pricing-card--featured:hover {
  transform: scale(1.05) translateY(-5px);
}

.pricing-card__badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-primary);
  color: white;
  padding: 0.25rem 1rem;
  border-radius: var(--radius-pill);
  font-size: 0.875rem;
  font-weight: 600;
}

.pricing-card__header {
  text-align: center;
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--color-border);
}

.pricing-card__title {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-primary);
}

.pricing-card__price {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 0.25rem;
  margin-bottom: var(--spacing-xs);
}

.price-currency {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-text-secondary);
}

.price-amount {
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 800;
  color: var(--color-text-primary);
}

.price-period {
  font-size: 1rem;
  color: var(--color-text-muted);
}

.pricing-card__desc {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
}

.pricing-card__features {
  margin-bottom: var(--spacing-lg);
}

.pricing-card__features li {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) 0;
  color: var(--color-text-secondary);
  border-bottom: 1px dashed var(--color-border);
}

.pricing-card__features li:last-child {
  border-bottom: none;
}

.pricing-card__features li::before {
  content: '✓';
  color: var(--color-success);
  font-weight: 700;
}

/* ===== FAQ Section ===== */
.faq {
  background: var(--color-background);
}

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

.faq__item {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-md);
  border: 1px solid var(--color-border);
  overflow: hidden;
}

.faq__question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) var(--spacing-lg);
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text-primary);
  text-align: left;
  transition: background var(--transition-fast);
}

.faq__question:hover {
  background: rgba(37, 99, 235, 0.05);
}

.faq__icon {
  flex-shrink: 0;
  transition: transform var(--transition-base);
  color: var(--color-text-muted);
}

.faq__item.active .faq__icon {
  transform: rotate(180deg);
}

.faq__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-base);
}

.faq__answer p {
  padding: 0 var(--spacing-lg) var(--spacing-lg);
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.faq__item.active .faq__answer {
  max-height: 500px;
}

/* ===== CTA Section ===== */
.cta {
  background: var(--color-surface);
  text-align: center;
}

.cta__content {
  max-width: 600px;
  margin: 0 auto;
}

.cta__title {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-primary);
}

.cta__text {
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-lg);
}

.cta__form {
  max-width: 500px;
  margin: 0 auto;
}

.form-group {
  display: flex;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
}

.form-input {
  flex: 1;
  padding: 0.875rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  font-family: var(--font-body);
  font-size: 1rem;
  transition: border-color var(--transition-fast);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.cta__note {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

@media (max-width: 480px) {
  .form-group {
    flex-direction: column;
  }
}

/* ===== Footer ===== */
.footer {
  background: var(--color-text-primary);
  color: white;
  padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

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

.footer__logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.5rem;
  color: white;
  margin-bottom: var(--spacing-md);
}

.footer__desc {
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: var(--spacing-md);
  max-width: 300px;
}

.footer__social {
  display: flex;
  gap: var(--spacing-sm);
}

.social-link {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  color: white;
  transition: all var(--transition-fast);
}

.social-link:hover {
  background: var(--color-primary);
  transform: translateY(-2px);
}

.footer__title {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  color: white;
}

.footer__links ul {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer__links a {
  color: rgba(255, 255, 255, 0.7);
  transition: color var(--transition-fast);
}

.footer__links a:hover {
  color: white;
}

.footer__bottom {
  text-align: center;
  padding-top: var(--spacing-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.875rem;
}

@media (max-width: 968px) {
  .footer__grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 576px) {
  .footer__grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .footer__desc {
    margin: 0 auto var(--spacing-md);
  }

  .footer__social {
    justify-content: center;
  }
}

/* ===== Animations ===== */
.reveal-text,
.reveal-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal-text.revealed,
.reveal-up.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* Staggered reveal for hero */
.hero__title { transition-delay: 0.1s; }
.hero__subtitle { transition-delay: 0.2s; }
.hero__actions { transition-delay: 0.3s; }

/* ===== Utility ===== */
.text-center { text-align: center; }
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }