/* ========================================
   Exocloud Ventures - Stylesheet
   Light Theme, Mobile Responsive, WCAG
   ======================================== */

/* CSS Variables */
:root {
  /* Colors */
  --color-primary: #0F172A;
  --color-secondary: #334155;
  --color-accent: #0EA5E9;
  --color-accent-hover: #0284C7;
  --color-bg-primary: #FFFFFF;
  --color-bg-secondary: #F8FAFC;
  --color-bg-tertiary: #F1F5F9;
  --color-border: #E2E8F0;
  --color-success: #10B981;
  --color-error: #EF4444;
  --color-text-muted: #64748B;

  /* Typography */
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Source Sans 3', 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;

  /* Layout */
  --container-max: 1200px;
  --border-radius-sm: 0.375rem;
  --border-radius-md: 0.5rem;
  --border-radius-lg: 1rem;

  /* 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-fast: 0.15s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

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

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-secondary);
  background-color: var(--color-bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.2;
  color: var(--color-primary);
}

h1 {
  font-size: 3.5rem;
}

h2 {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-lg);
}

h3 {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-sm);
}

p {
  margin-bottom: var(--spacing-sm);
}

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

a:hover, a:focus {
  color: var(--color-accent-hover);
  text-decoration: underline;
}

.nav__logo:hover,
.footer__logo:hover {
  text-decoration: none;
}

a:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: var(--border-radius-sm);
}

/* Skip Link (Accessibility) */
.skip-link {
  position: absolute;
  top: -100%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-primary);
  color: var(--color-bg-primary);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--border-radius-sm);
  z-index: 10000;
  font-weight: 600;
}

.skip-link:focus {
  top: var(--spacing-sm);
  text-decoration: none;
}

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

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

.section--alt {
  background-color: var(--color-bg-secondary);
}

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

.section__header p {
  font-size: 1.125rem;
  color: var(--color-text-muted);
}

/* Navigation */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: transparent;
  transition: background var(--transition-base), box-shadow var(--transition-base);
}

.nav--scrolled {
  background: var(--color-bg-primary);
  box-shadow: var(--shadow-md);
}

.nav__container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) var(--spacing-md);
  max-width: var(--container-max);
  margin: 0 auto;
}

.nav__logo {
  display: inline-block;
}

.nav__logo img {
  height: 40px;
  width: auto;
  display: block;
}

.nav__logo:hover {
  color: var(--color-accent);
  text-decoration: none;
}

.nav__menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  list-style: none;
}

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

.nav__link:hover,
.nav__link.active {
  color: var(--color-accent);
  text-decoration: none;
}

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

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

/* Mobile Menu Toggle */
.nav__toggle {
  display: none;
  flex-direction: column;
  justify-content: space-around;
  width: 30px;
  height: 24px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 1001;
}

.nav__toggle span {
  width: 100%;
  height: 3px;
  background: var(--color-primary);
  border-radius: 2px;
  transition: all var(--transition-base);
}

.nav__toggle[aria-expanded="true"] span:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

.nav__toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav__toggle[aria-expanded="true"] span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

/* Mobile Navigation */
@media (max-width: 767px) {
  .nav__toggle {
    display: flex;
  }

  .nav__menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    flex-direction: column;
    background: var(--color-bg-primary);
    box-shadow: var(--shadow-xl);
    padding: var(--spacing-3xl) var(--spacing-lg);
    transition: right var(--transition-base);
  }

  .nav__menu.is-open {
    right: 0;
  }

  .nav__menu a {
    font-size: 1.25rem;
  }
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-bg-primary) 0%, var(--color-bg-secondary) 100%);
  position: relative;
  overflow: hidden;
  padding-top: 80px;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 80%;
  height: 150%;
  background: radial-gradient(ellipse, rgba(14, 165, 233, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero__content {
  text-align: center;
  max-width: 800px;
  padding: var(--spacing-lg);
  position: relative;
  z-index: 1;
}

.hero__badge {
  display: inline-block;
  background: var(--color-bg-tertiary);
  color: var(--color-accent);
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: 50px;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: var(--spacing-lg);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.hero__title {
  font-size: 3.5rem;
  margin-bottom: var(--spacing-lg);
  line-height: 1.1;
}

.hero__title span {
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-hover) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__description {
  font-size: 1.25rem;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

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

@media (max-width: 767px) {
  .hero__title {
    font-size: 2.5rem;
  }

  .hero__description {
    font-size: 1.125rem;
  }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-sm) var(--spacing-lg);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--border-radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
}

.btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.btn--primary {
  background: var(--color-accent);
  color: var(--color-bg-primary);
}

.btn--primary:hover {
  background: var(--color-accent-hover);
  color: var(--color-bg-primary);
  text-decoration: none;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

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

.btn--secondary:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  text-decoration: none;
}

/* About Section */
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
  align-items: center;
}

.about__image {
  position: relative;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  background: var(--color-bg-tertiary);
  aspect-ratio: 4/3;
}

.about__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.about__image-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: 1.25rem;
}

.about__content h2 {
  text-align: left;
}

.about__features {
  list-style: none;
  margin-top: var(--spacing-lg);
}

.about__feature {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.about__feature-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  color: var(--color-accent);
}

@media (max-width: 1023px) {
  .about__grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }

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

/* Values Cards */
.values {
  margin-top: var(--spacing-2xl);
}

.values__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.value-card {
  background: var(--color-bg-primary);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-md);
  border: 1px solid var(--color-border);
  transition: all var(--transition-base);
}

.value-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.value-card__icon {
  width: 48px;
  height: 48px;
  background: var(--color-bg-tertiary);
  border-radius: var(--border-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-md);
  color: var(--color-accent);
}

.value-card__title {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-xs);
}

.value-card p {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  margin-bottom: 0;
}

@media (max-width: 1023px) {
  .values__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 767px) {
  .values__grid {
    grid-template-columns: 1fr;
  }
}

/* Services Section */
.services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.service-card {
  background: var(--color-bg-primary);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-md);
  border: 1px solid var(--color-border);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

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

.service-card:hover::before {
  transform: scaleX(1);
}

.service-card__icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-hover) 100%);
  border-radius: var(--border-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-md);
  color: var(--color-bg-primary);
  font-size: 1.5rem;
}

.service-card__title {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-sm);
}

.service-card p {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  margin-bottom: 0;
}

@media (max-width: 1023px) {
  .services__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 767px) {
  .services__grid {
    grid-template-columns: 1fr;
  }
}

/* Contact Section */
.contact__wrapper {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-2xl);
  align-items: center;
}

.contact__info {
  padding: var(--spacing-lg);
  background: var(--color-bg-tertiary);
  border-radius: var(--border-radius-md);
}

.contact__info-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.contact__info-item:last-child {
  margin-bottom: 0;
}

.contact__info-icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  background: var(--color-bg-primary);
  border-radius: var(--border-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
}

.contact__info h4 {
  font-size: 1rem;
  margin-bottom: var(--spacing-xs);
}

.contact__info p {
  color: var(--color-text-muted);
  margin-bottom: 0;
  font-size: 0.9375rem;
}

/* Contact Form */
.contact__form-wrapper {
  background: var(--color-bg-primary);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-md);
  border: 1px solid var(--color-border);
}

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

.form__label {
  display: block;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
  color: var(--color-primary);
}

.form__input,
.form__select,
.form__textarea {
  width: 100%;
  padding: var(--spacing-sm);
  font-family: var(--font-body);
  font-size: 1rem;
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius-sm);
  background: var(--color-bg-primary);
  color: var(--color-primary);
  transition: border-color var(--transition-fast);
}

.form__input:focus,
.form__select:focus,
.form__textarea:focus {
  outline: none;
  border-color: var(--color-accent);
}

.form__input::placeholder,
.form__textarea::placeholder {
  color: var(--color-text-muted);
}

.form__textarea {
  min-height: 150px;
  resize: vertical;
}

.form__error {
  color: var(--color-error);
  font-size: 0.875rem;
  margin-top: var(--spacing-xs);
  display: none;
}

.form__group.error .form__input,
.form__group.error .form__select,
.form__group.error .form__textarea {
  border-color: var(--color-error);
}

.form__group.error .form__error {
  display: block;
}

.form__submit {
  width: 100%;
}

.form__success {
  background: var(--color-success);
  color: var(--color-bg-primary);
  padding: var(--spacing-md);
  border-radius: var(--border-radius-sm);
  text-align: center;
  display: none;
}

.form__success.show {
  display: block;
}

@media (max-width: 1023px) {
  .contact__wrapper {
    grid-template-columns: 1fr;
  }
}

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

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

.footer__brand {
  max-width: 300px;
}

.footer__logo {
  display: inline-block;
}

.footer__logo img {
  height: 40px;
  width: auto;
  display: block;
}

.footer__brand p {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  margin-bottom: 0;
}

.footer__title {
  font-size: 1rem;
  color: var(--color-bg-primary);
  margin-bottom: var(--spacing-md);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer__links {
  list-style: none;
}

.footer__links li {
  margin-bottom: var(--spacing-xs);
}

.footer__links a {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
}

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

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

.footer__social a {
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--border-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-bg-secondary);
  transition: all var(--transition-base);
}

.footer__social a:hover {
  background: var(--color-accent);
  color: var(--color-bg-primary);
}

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--spacing-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.footer__copyright {
  color: var(--color-text-muted);
  font-size: 0.875rem;
  margin-bottom: 0;
}

.footer__legal {
  display: flex;
  gap: var(--spacing-md);
}

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

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

@media (max-width: 1023px) {
  .footer__grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 767px) {
  .footer__grid {
    grid-template-columns: 1fr;
  }

  .footer__bottom {
    flex-direction: column;
    text-align: center;
  }
}

/* Legal Pages (Terms & Privacy) */
.legal-page {
  padding-top: 120px;
  padding-bottom: var(--spacing-3xl);
}

.legal-page__header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

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

.legal-page__content h2 {
  font-size: 1.75rem;
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
}

.legal-page__content h3 {
  font-size: 1.25rem;
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-sm);
}

.legal-page__content p,
.legal-page__content ul {
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-md);
}

.legal-page__content ul {
  padding-left: var(--spacing-lg);
}

.legal-page__content li {
  margin-bottom: var(--spacing-xs);
}

.legal-page__content strong {
  color: var(--color-primary);
}

/* 404 Page */
.error-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-lg);
  background: var(--color-bg-secondary);
}

.error-page__content {
  text-align: center;
  max-width: 600px;
}

.error-page__code {
  font-family: var(--font-heading);
  font-size: 8rem;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: var(--spacing-md);
}

.error-page__title {
  font-size: 2rem;
  margin-bottom: var(--spacing-md);
}

.error-page__description {
  color: var(--color-text-muted);
  font-size: 1.125rem;
  margin-bottom: var(--spacing-xl);
}

@media (max-width: 767px) {
  .error-page__code {
    font-size: 5rem;
  }
}

/* Form Success Page */
.form-success {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-3xl) var(--spacing-md);
  background: linear-gradient(135deg, var(--color-bg-primary) 0%, var(--color-bg-secondary) 100%);
  position: relative;
  overflow: hidden;
}

.form-success::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 80%;
  height: 150%;
  background: radial-gradient(ellipse, rgba(14, 165, 233, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.form-success__content {
  text-align: center;
   max-width: var(--container-max);
  position: relative;
  z-index: 1;
}

.form-success__icon {
  width: 100px;
  height: 100px;
  background: linear-gradient(135deg, var(--color-success) 0%, #059669 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-xl);
  animation: success-pop 0.5s ease-out;
}

@keyframes success-pop {
  0% {
    transform: scale(0);
    opacity: 0;
  }
  50% {
    transform: scale(1.1);
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}

.form-success__icon i {
  font-size: 3rem;
  color: var(--color-bg-primary);
}

.form-success__title {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-md);
  color: var(--color-primary);
}

.form-success__message {
  font-size: 1.25rem;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-xl);
}

@media (max-width: 767px) {
  .form-success__title {
    font-size: 2rem;
  }

  .form-success__message {
    font-size: 1.125rem;
  }

  .form-success__icon {
    width: 80px;
    height: 80px;
  }

  .form-success__icon i {
    font-size: 2.5rem;
  }
}

/* Utility Classes */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.text-center {
  text-align: center;
}

/* Animation Classes */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger animation delays */
.fade-in:nth-child(1) { transition-delay: 0s; }
.fade-in:nth-child(2) { transition-delay: 0.1s; }
.fade-in:nth-child(3) { transition-delay: 0.2s; }
.fade-in:nth-child(4) { transition-delay: 0.3s; }
.fade-in:nth-child(5) { transition-delay: 0.4s; }
.fade-in:nth-child(6) { transition-delay: 0.5s; }
.fade-in:nth-child(7) { transition-delay: 0.6s; }