/* ========================================
   Cloud-Cut Landing Page
   ======================================== */

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

:root {
  --color-bg-dark: #0f1117;
  --color-bg-card: #1a1d27;
  --color-bg-light: #f6f6f9;
  --color-bg-section: #ffffff;
  --color-text-primary: #e8e9ed;
  --color-text-secondary: #9ca0ad;
  --color-text-dark: #1a1a1a;
  --color-text-muted: #666;
  --color-accent: #4a90e2;
  --color-accent-hover: #357abd;
  --color-accent-glow: rgba(74, 144, 226, 0.15);
  --color-border: #2a2d3a;
  --color-border-light: #e0e0e0;
  --color-success: #34c759;
  --color-error: #e74c3c;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SF Mono", "Fira Code", "Fira Mono", monospace;
  --container-max: 1120px;
  --header-height: 64px;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

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

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

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 500;
  line-height: 1;
  padding: 12px 24px;
  border-radius: 8px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}

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

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

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

.btn-outline:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.btn-sm {
  font-size: 13px;
  padding: 8px 16px;
  border-radius: 6px;
}

.btn-lg {
  font-size: 16px;
  padding: 14px 32px;
  border-radius: 10px;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* ========================================
   Header
   ======================================== */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-height);
  background: rgba(15, 17, 23, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--color-text-primary);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.logo svg {
  stroke: var(--color-accent);
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.header-nav a {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 14px;
  transition: color 0.2s;
}

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

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--color-text-primary);
  cursor: pointer;
  padding: 4px;
}

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

.hero {
  padding: calc(var(--header-height) + 64px) 0 80px;
  background: linear-gradient(180deg, var(--color-bg-dark) 0%, #141620 100%);
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.badge-beta {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 4px 12px;
  border-radius: 20px;
  background: var(--color-accent-glow);
  color: var(--color-accent);
  border: 1px solid rgba(74, 144, 226, 0.3);
  margin-bottom: 20px;
}

.hero h1 {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: #fff;
  margin-bottom: 20px;
}

.hero-subtitle {
  font-size: 17px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  max-width: 520px;
  margin-bottom: 32px;
}

.hero-visual {
  display: flex;
  justify-content: center;
}

.hero-screenshot-placeholder {
  width: 100%;
  max-width: 520px;
  aspect-ratio: 16 / 10;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: var(--color-text-secondary);
  font-size: 14px;
}

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

.features {
  padding: 96px 0;
  background: var(--color-bg-dark);
}

.section-title {
  text-align: center;
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #fff;
  margin-bottom: 8px;
}

.section-subtitle {
  text-align: center;
  font-size: 16px;
  color: var(--color-text-secondary);
  margin-bottom: 56px;
}

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

.feature-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 28px;
  transition: border-color 0.2s, transform 0.2s;
}

.feature-card:hover {
  border-color: rgba(74, 144, 226, 0.3);
  transform: translateY(-2px);
}

.feature-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent-glow);
  border-radius: 10px;
  margin-bottom: 16px;
  color: var(--color-accent);
}

.feature-card h3 {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ========================================
   How It Works
   ======================================== */

.how-it-works {
  padding: 96px 0;
  background: #141620;
}

.steps {
  display: flex;
  align-items: flex-start;
  gap: 0;
  max-width: 900px;
  margin: 0 auto;
}

.step {
  flex: 1;
  text-align: center;
  padding: 0 20px;
}

.step-number {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  background: var(--color-accent);
  color: #fff;
  font-size: 20px;
  font-weight: 700;
  border-radius: 50%;
}

.step h3 {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 8px;
}

.step p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.step-divider {
  width: 64px;
  height: 2px;
  background: var(--color-border);
  margin-top: 24px;
  flex-shrink: 0;
}

/* ========================================
   Beta Access CTA
   ======================================== */

.access-section {
  padding: 96px 0;
  background: var(--color-bg-dark);
}

.access-inner {
  max-width: 560px;
  text-align: center;
}

.access-inner h2 {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
}

.access-inner > p {
  font-size: 15px;
  color: var(--color-text-secondary);
  margin-bottom: 32px;
  line-height: 1.6;
}

.access-form {
  margin-bottom: 16px;
}

.input-group {
  display: flex;
  gap: 8px;
}

.input-group input {
  flex: 1;
  font-family: var(--font-sans);
  font-size: 15px;
  padding: 12px 16px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  color: var(--color-text-primary);
  outline: none;
  transition: border-color 0.2s;
}

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

.input-group input:focus {
  border-color: var(--color-accent);
}

.input-group input:invalid:not(:placeholder-shown) {
  border-color: var(--color-error);
}

.form-status {
  margin-top: 12px;
  font-size: 14px;
  min-height: 20px;
}

.form-status.success {
  color: var(--color-success);
}

.form-status.error {
  color: var(--color-error);
}

.form-status.info {
  color: var(--color-accent);
}

.access-note {
  font-size: 13px;
  color: var(--color-text-secondary);
  opacity: 0.7;
}

/* Spinner */
.spinner {
  animation: spin 1s linear infinite;
}

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

.hidden {
  display: none !important;
}

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

.site-footer {
  padding: 32px 0;
  border-top: 1px solid var(--color-border);
}

.footer-inner {
  text-align: center;
  font-size: 13px;
  color: var(--color-text-secondary);
}

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

@media (max-width: 900px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .steps {
    flex-direction: column;
    align-items: center;
    gap: 32px;
  }

  .step-divider {
    width: 2px;
    height: 32px;
    margin-top: 0;
  }
}

@media (max-width: 680px) {
  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-subtitle {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-visual {
    order: -1;
  }

  .hero-screenshot-placeholder {
    max-width: 400px;
    aspect-ratio: 4 / 3;
  }

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

  .header-nav {
    display: none;
  }

  .header-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-bg-dark);
    border-bottom: 1px solid var(--color-border);
    padding: 16px 24px;
    gap: 16px;
  }

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

  .input-group {
    flex-direction: column;
  }

  .input-group button {
    width: 100%;
  }
}

/* ========================================
   Focus & Accessibility
   ======================================== */

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

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .feature-card {
    transition: none;
  }

  .spinner {
    animation: none;
  }
}