/* ============================================================
   CLOUDGATE STUDIOS — styles.css
   ============================================================ */

/* ------------------------------------------------------------
   1. Custom Properties (Design Tokens)
   ------------------------------------------------------------ */
:root {
  /* Brand */
  --color-primary: #ff4500;
  --color-primary-dark: #cc3700;
  --color-primary-light: #ff6a33;

  /* Backgrounds */
  --color-bg: #ffffff;
  --color-surface: #f7f7f7;
  --color-footer-bg: #111111;

  /* Text */
  --color-text: #1a1a1a;
  --color-text-muted: #666666;
  --color-text-on-primary: #ffffff;
  --color-text-on-dark: #ffffff;

  /* Borders */
  --color-border: #e0e0e0;

  /* Typography */
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;

  /* Font sizes */
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.5rem;
  --text-2xl: 2rem;
  --text-3xl: 2.75rem;
  --text-4xl: 3.5rem;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-24: 6rem;

  /* Layout */
  --container-max: 1100px;
  --container-pad: var(--space-6);
  --nav-height: 64px;

  /* Radii */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.10);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);

  /* Transitions */
  --ease: 200ms ease;
  --ease-slow: 350ms ease;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
}

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

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

a:hover {
  color: var(--color-primary-dark);
}

ul {
  list-style: none;
}

/* ------------------------------------------------------------
   3. Utilities
   ------------------------------------------------------------ */
.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}

/* ------------------------------------------------------------
   4. Navigation
   ------------------------------------------------------------ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-height);
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

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

.nav-logo img {
  height: 28px;
  width: auto;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.nav-menu a {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
  letter-spacing: 0.02em;
  text-transform: uppercase;
  transition: color var(--ease);
}

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

/* Hamburger toggle — hidden on desktop */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 24px;
  height: 18px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-text);
  transition: transform var(--ease), opacity var(--ease);
}

/* Mobile nav open state */
.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

@media (max-width: 639px) {
  .nav-toggle {
    display: flex;
  }

  .nav-menu {
    display: none;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-4) var(--container-pad);
  }

  .nav-menu.is-open {
    display: flex;
  }

  .nav-menu li {
    width: 100%;
  }

  .nav-menu a {
    display: block;
    padding: var(--space-3) 0;
    border-bottom: 1px solid var(--color-border);
  }

  .nav-menu li:last-child a {
    border-bottom: none;
  }
}

/* ------------------------------------------------------------
   5. Hero Section
   ------------------------------------------------------------ */
.hero {
  margin-top: var(--nav-height);
  background-color: var(--color-primary);
  color: var(--color-text-on-primary);
  padding: var(--space-24) 0;
  text-align: center;
}

.hero-title {
  font-size: var(--text-4xl);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: var(--space-6);
}

.hero-subtitle {
  font-size: var(--text-xl);
  font-weight: 400;
  opacity: 0.9;
  max-width: 540px;
  margin-inline: auto;
  margin-bottom: var(--space-8);
  line-height: 1.5;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background-color: var(--color-text-on-primary);
  color: var(--color-primary);
  padding: var(--space-3) var(--space-8);
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: var(--text-base);
  transition: background-color var(--ease), transform var(--ease);
}

.hero-cta:hover {
  background-color: rgba(255, 255, 255, 0.9);
  color: var(--color-primary-dark);
  transform: translateY(-1px);
}

@media (max-width: 639px) {
  .hero-title {
    font-size: var(--text-3xl);
  }

  .hero-subtitle {
    font-size: var(--text-lg);
  }
}

/* ------------------------------------------------------------
   6. Section Shared Styles
   ------------------------------------------------------------ */
.section {
  padding: var(--space-24) 0;
}

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

.section-primary {
  background-color: var(--color-primary);
  color: var(--color-text-on-primary);
}

.section-heading {
  font-size: var(--text-2xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-3);
}

.section-subheading {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  margin-bottom: var(--space-12);
  max-width: 600px;
}

.section-header {
  margin-bottom: var(--space-12);
}

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

.section-header--center .section-subheading {
  margin-inline: auto;
}

/* ------------------------------------------------------------
   7. Apps Section
   ------------------------------------------------------------ */
.apps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: var(--space-6);
}

.app-card {
  background-color: var(--color-bg);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: box-shadow var(--ease), transform var(--ease);
  display: flex;
  flex-direction: column;
}

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

.app-card-link {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  padding: var(--space-6);
  color: var(--color-text);
  flex: 1;
}

.app-card-link:hover {
  color: var(--color-text);
}

.app-card-icon {
  flex-shrink: 0;
}

.app-card-icon img {
  width: 72px;
  height: 72px;
  border-radius: 16px;  /* iOS squircle approximation */
  box-shadow: var(--shadow-sm);
}

.app-card-icon-placeholder {
  width: 72px;
  height: 72px;
  border-radius: 16px;
  background: var(--color-surface);
  border: 2px dashed var(--color-border, #e0e0e0);
}

.app-card-name {
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-1);
}

.app-card-tagline {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.4;
}

.app-card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  padding: 0 var(--space-6) var(--space-6);
}

.store-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background-color: var(--color-primary);
  color: var(--color-text-on-primary);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 600;
  transition: background-color var(--ease), transform var(--ease);
}

.store-btn:hover {
  background-color: var(--color-primary-dark);
  color: var(--color-text-on-primary);
  transform: translateY(-1px);
}

/* ------------------------------------------------------------
   8. About Section
   ------------------------------------------------------------ */
.about-content {
  max-width: 680px;
}

.about-content p {
  font-size: var(--text-lg);
  line-height: 1.8;
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}

.about-content p:last-child {
  margin-bottom: 0;
}

/* ------------------------------------------------------------
   9. Blog Section (homepage preview + listing page)
   ------------------------------------------------------------ */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-6);
}

.blog-card {
  background-color: var(--color-bg);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--ease), transform var(--ease);
  display: flex;
  flex-direction: column;
}

.blog-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.blog-card-date {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-2);
}

.blog-card-title {
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-3);
  line-height: 1.3;
}

.blog-card-title a {
  color: var(--color-text);
}

.blog-card-title a:hover {
  color: var(--color-primary);
}

.blog-card-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  flex: 1;
  margin-bottom: var(--space-4);
}

.read-more {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary);
  align-self: flex-start;
}

.read-more:hover {
  color: var(--color-primary-dark);
}

.blog-empty {
  color: var(--color-text-muted);
  font-size: var(--text-lg);
  padding: var(--space-12) 0;
}

.view-all-link {
  margin-top: var(--space-8);
  text-align: center;
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  padding: var(--space-3) var(--space-6);
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-full);
  color: var(--color-primary);
  font-weight: 600;
  font-size: var(--text-sm);
  transition: background-color var(--ease), color var(--ease);
}

.btn-outline:hover {
  background-color: var(--color-primary);
  color: var(--color-text-on-primary);
}

/* Blog listing page */
.blog-listing-header {
  margin-top: var(--nav-height);
  background-color: var(--color-primary);
  color: var(--color-text-on-primary);
  padding: var(--space-16) 0;
  text-align: center;
}

.blog-listing-header h1 {
  font-size: var(--text-3xl);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.blog-listing-body {
  padding: var(--space-16) 0;
}

/* ------------------------------------------------------------
   10. Blog Post Layout
   ------------------------------------------------------------ */
.post-layout {
  /* takes full page */
}

.post-header {
  margin-top: var(--nav-height);
  background-color: var(--color-primary);
  color: var(--color-text-on-primary);
  padding: var(--space-16) 0;
}

.post-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-6);
  font-size: var(--text-sm);
  opacity: 0.85;
}

.back-link {
  color: var(--color-text-on-primary);
  font-weight: 500;
}

.back-link:hover {
  color: rgba(255, 255, 255, 0.8);
}

.post-title {
  font-size: var(--text-3xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: var(--space-4);
}

.post-description {
  font-size: var(--text-lg);
  opacity: 0.85;
  max-width: 600px;
  line-height: 1.5;
}

.post-body {
  padding: var(--space-16) 0;
}

.post-body .container {
  max-width: 720px;
}

/* Markdown prose styles */
.post-body h2 {
  font-size: var(--text-xl);
  font-weight: 700;
  margin-top: var(--space-12);
  margin-bottom: var(--space-4);
  letter-spacing: -0.01em;
}

.post-body h3 {
  font-size: var(--text-lg);
  font-weight: 600;
  margin-top: var(--space-8);
  margin-bottom: var(--space-3);
}

.post-body p {
  margin-bottom: var(--space-6);
  line-height: 1.8;
  color: var(--color-text-muted);
}

.post-body a {
  text-decoration: underline;
  text-underline-offset: 2px;
}

.post-body ul,
.post-body ol {
  margin-bottom: var(--space-6);
  padding-left: var(--space-6);
}

.post-body ul {
  list-style: disc;
}

.post-body ol {
  list-style: decimal;
}

.post-body li {
  margin-bottom: var(--space-2);
  line-height: 1.7;
  color: var(--color-text-muted);
}

.post-body code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background-color: var(--color-surface);
  padding: 0.1em 0.3em;
  border-radius: var(--radius-sm);
}

.post-body pre {
  background-color: #1a1a1a;
  color: #e0e0e0;
  padding: var(--space-6);
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin-bottom: var(--space-6);
}

.post-body pre code {
  background: none;
  padding: 0;
  color: inherit;
  font-size: var(--text-sm);
}

.post-body blockquote {
  border-left: 4px solid var(--color-primary);
  padding-left: var(--space-4);
  margin-left: 0;
  margin-bottom: var(--space-6);
  color: var(--color-text-muted);
  font-style: italic;
}

.post-body hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: var(--space-12) 0;
}

.post-body img {
  border-radius: var(--radius-md);
  margin-bottom: var(--space-6);
}

@media (max-width: 639px) {
  .post-title {
    font-size: var(--text-2xl);
  }

  .post-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
  }
}

/* ------------------------------------------------------------
   11. Contact Section
   ------------------------------------------------------------ */
.contact-content {
  text-align: center;
  max-width: 520px;
  margin-inline: auto;
}

.contact-content p {
  font-size: var(--text-lg);
  opacity: 0.9;
  margin-bottom: var(--space-8);
  line-height: 1.7;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  padding: var(--space-4) var(--space-8);
  background-color: var(--color-text-on-primary);
  color: var(--color-primary);
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: var(--text-base);
  transition: background-color var(--ease), transform var(--ease);
}

.btn-primary:hover {
  background-color: rgba(255, 255, 255, 0.9);
  color: var(--color-primary-dark);
  transform: translateY(-1px);
}

/* ------------------------------------------------------------
   12. Footer
   ------------------------------------------------------------ */
.footer {
  background-color: var(--color-footer-bg);
  color: var(--color-text-on-dark);
  padding: var(--space-8) 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.footer-copy {
  font-size: var(--text-sm);
  opacity: 0.6;
}

.footer-links {
  display: flex;
  gap: var(--space-6);
}

.footer-links a {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.5);
  transition: color var(--ease);
}

.footer-links a:hover {
  color: var(--color-text-on-dark);
}

@media (max-width: 639px) {
  .footer-inner {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
}

/* ------------------------------------------------------------
   13. 404 Page
   ------------------------------------------------------------ */
.error-page {
  margin-top: var(--nav-height);
  min-height: calc(100vh - var(--nav-height) - 80px);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-24) var(--container-pad);
}

.error-code {
  font-size: 6rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: var(--space-4);
}

.error-message {
  font-size: var(--text-xl);
  font-weight: 600;
  margin-bottom: var(--space-4);
}

.error-desc {
  color: var(--color-text-muted);
  margin-bottom: var(--space-8);
}

/* ------------------------------------------------------------
   14. App Detail Page
   ------------------------------------------------------------ */
.app-detail-back {
  display: inline-block;
  font-size: var(--text-sm);
  font-weight: 500;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: var(--space-8);
  transition: color var(--ease);
}

.app-detail-back:hover {
  color: var(--color-text-on-primary);
}

/* Hero */
.app-detail-hero {
  margin-top: var(--nav-height);
  background-color: var(--color-primary);
  color: var(--color-text-on-primary);
  padding: var(--space-16) 0;
}

.app-detail-hero-content {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.app-detail-icon-wrap img {
  width: 120px;
  height: 120px;
  border-radius: 27px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
  flex-shrink: 0;
}

.app-detail-title {
  font-size: var(--text-3xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin-bottom: var(--space-3);
}

.app-detail-tagline {
  font-size: var(--text-lg);
  opacity: 0.85;
  margin-bottom: var(--space-6);
}

/* Larger App Store button variant */
.store-btn--large {
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-base);
  background-color: var(--color-text-on-primary);
  color: var(--color-primary);
}

.store-btn--large:hover {
  background-color: rgba(255, 255, 255, 0.9);
  color: var(--color-primary-dark);
}

/* Description section */
.app-detail-description {
  padding: var(--space-24) 0;
  background-color: var(--color-bg);
}

.app-detail-description-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

.app-detail-screenshot img {
  max-width: 280px;
  margin-inline: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.app-detail-description-text h2 {
  font-size: var(--text-2xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-4);
  line-height: 1.2;
}

.app-detail-description-text p {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: var(--space-4);
}

.app-detail-privacy-link {
  margin-top: var(--space-6);
  font-size: var(--text-sm) !important;
}

.app-detail-privacy-link a {
  color: var(--color-text-muted);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* Privacy policy page */
.app-detail-privacy-header {
  margin-top: var(--nav-height);
  background-color: var(--color-primary);
  color: var(--color-text-on-primary);
  padding: var(--space-12) 0;
}

.app-detail-privacy-header h1 {
  font-size: var(--text-2xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-2);
}

.app-detail-privacy-header p {
  opacity: 0.75;
  font-size: var(--text-sm);
}

.app-detail-privacy-body {
  padding: var(--space-16) 0;
  max-width: 720px;
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

.app-detail-privacy-body h2 {
  font-size: var(--text-lg);
  font-weight: 600;
  margin-top: var(--space-8);
  margin-bottom: var(--space-3);
}

.app-detail-privacy-body p {
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: var(--space-4);
}

/* Responsive */
@media (max-width: 639px) {
  .app-detail-hero-content {
    flex-direction: column;
    text-align: center;
  }

  .app-detail-title {
    font-size: var(--text-2xl);
  }

  .app-detail-description-inner {
    grid-template-columns: 1fr;
  }

  .app-detail-screenshot {
    order: -1;
  }
}