/* ============================================
   光影尘埃 - 国产独立电影评鉴平台
   核心样式文件 gc-main.css
   CSS前缀: gc- (GuoChan)
   ============================================ */

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

:root {
  --gc-color-primary: #E1C16E;
  --gc-color-dark: #3B2F2F;
  --gc-color-gray: #A9A9A9;
  --gc-color-bg: #1A1410;
  --gc-color-bg-light: #2A2018;
  --gc-color-bg-card: #2E2419;
  --gc-color-text: #D4C5A0;
  --gc-color-text-light: #B8A97C;
  --gc-color-text-muted: #8A7D6B;
  --gc-color-border: #4A3D2E;
  --gc-color-accent: #C9A84C;
  --gc-font-title: "FangSong", "STFangsong", "SimSun", "Noto Serif SC", serif;
  --gc-font-body: "Noto Serif SC", "Source Han Serif SC", "SimSun", serif;
  --gc-font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --gc-max-width: 1200px;
  --gc-grain-opacity: 0.04;
}

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

body {
  font-family: var(--gc-font-body);
  background-color: var(--gc-color-bg);
  color: var(--gc-color-text);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* --- Film Grain Overlay --- */
.gc-grain-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 9999;
  opacity: var(--gc-grain-opacity);
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='1'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 256px 256px;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--gc-font-title);
  color: var(--gc-color-primary);
  line-height: 1.4;
  font-weight: 600;
}

h1 { font-size: 2rem; margin-bottom: 1rem; }
h2 { font-size: 1.6rem; margin-bottom: 0.8rem; }
h3 { font-size: 1.3rem; margin-bottom: 0.6rem; }

p {
  margin-bottom: 1rem;
  color: var(--gc-color-text);
}

a {
  color: var(--gc-color-primary);
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: #F0D88E;
  text-decoration: underline;
}

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

/* --- Container --- */
.gc-container {
  width: 100%;
  max-width: var(--gc-max-width);
  margin: 0 auto;
  padding: 0 1rem;
}

/* --- Navigation --- */
.gc-header {
  background-color: var(--gc-color-dark);
  border-bottom: 1px solid var(--gc-color-border);
  position: relative;
  z-index: 100;
}

.gc-nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.8rem 1rem;
  max-width: var(--gc-max-width);
  margin: 0 auto;
}

.gc-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
}

.gc-logo-img {
  width: 40px;
  height: 40px;
  border-radius: 50%;
}

.gc-logo-text {
  font-family: var(--gc-font-title);
  font-size: 1.2rem;
  color: var(--gc-color-primary);
  white-space: nowrap;
}

.gc-logo-domain {
  font-size: 0.7rem;
  color: var(--gc-color-text-muted);
  display: block;
}

.gc-nav-links {
  display: flex;
  list-style: none;
  gap: 0.2rem;
  flex-wrap: wrap;
  justify-content: center;
}

.gc-nav-link {
  color: var(--gc-color-text-light);
  padding: 0.4rem 0.7rem;
  font-size: 0.9rem;
  font-family: var(--gc-font-sans);
  border-radius: 4px;
  transition: all 0.3s ease;
  white-space: nowrap;
}

.gc-nav-link:hover,
.gc-nav-link.gc-active {
  color: var(--gc-color-primary);
  background-color: rgba(225, 193, 110, 0.1);
  text-decoration: none;
}

.gc-nav-right {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.gc-search-box {
  display: flex;
  align-items: center;
  background-color: rgba(255,255,255,0.08);
  border: 1px solid var(--gc-color-border);
  border-radius: 20px;
  padding: 0.3rem 0.8rem;
  width: 160px;
}

.gc-search-input {
  background: transparent;
  border: none;
  color: var(--gc-color-text);
  font-size: 0.85rem;
  width: 100%;
  outline: none;
  font-family: var(--gc-font-sans);
}

.gc-search-input::placeholder {
  color: var(--gc-color-text-muted);
}

.gc-search-icon {
  color: var(--gc-color-text-muted);
  font-size: 0.9rem;
  margin-right: 0.4rem;
}

.gc-btn-submit {
  background-color: var(--gc-color-primary);
  color: var(--gc-color-dark);
  border: none;
  padding: 0.4rem 1rem;
  border-radius: 4px;
  font-size: 0.85rem;
  font-family: var(--gc-font-sans);
  cursor: pointer;
  transition: all 0.3s ease;
  white-space: nowrap;
}

.gc-btn-submit:hover {
  background-color: #F0D88E;
  transform: translateY(-1px);
}

/* Hamburger Menu */
.gc-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 5px;
  background: none;
  border: none;
}

.gc-hamburger-line {
  width: 24px;
  height: 2px;
  background-color: var(--gc-color-primary);
  transition: all 0.3s ease;
}

.gc-mobile-menu {
  display: none;
  background-color: var(--gc-color-dark);
  border-top: 1px solid var(--gc-color-border);
  padding: 1rem;
}

.gc-mobile-menu.gc-open {
  display: block;
}

.gc-mobile-menu .gc-nav-link {
  display: block;
  padding: 0.6rem 0;
  border-bottom: 1px solid rgba(74, 61, 46, 0.5);
}

/* --- Hero Banner --- */
.gc-hero {
  position: relative;
  width: 100%;
  height: 70vh;
  min-height: 400px;
  overflow: hidden;
}

.gc-hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.6) saturate(0.8);
}

.gc-hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    to bottom,
    rgba(26, 20, 16, 0.3) 0%,
    rgba(26, 20, 16, 0.5) 50%,
    rgba(26, 20, 16, 0.9) 100%
  );
  display: flex;
  align-items: flex-end;
  padding-bottom: 4rem;
}

.gc-hero-content {
  max-width: var(--gc-max-width);
  margin: 0 auto;
  padding: 0 2rem;
  width: 100%;
}

.gc-hero-title {
  font-size: 2.4rem;
  color: var(--gc-color-primary);
  margin-bottom: 0.8rem;
  text-shadow: 0 2px 8px rgba(0,0,0,0.6);
}

.gc-hero-subtitle {
  font-size: 1.1rem;
  color: var(--gc-color-text);
  margin-bottom: 1.5rem;
  max-width: 600px;
  line-height: 1.8;
}

.gc-hero-btn {
  display: inline-block;
  background-color: var(--gc-color-primary);
  color: var(--gc-color-dark);
  padding: 0.7rem 2rem;
  font-size: 1rem;
  font-family: var(--gc-font-title);
  border-radius: 4px;
  transition: all 0.3s ease;
  text-decoration: none;
  border: 2px solid var(--gc-color-primary);
}

.gc-hero-btn:hover {
  background-color: transparent;
  color: var(--gc-color-primary);
  text-decoration: none;
}

/* --- Section Common --- */
.gc-section {
  padding: 3rem 0;
  border-bottom: 1px solid var(--gc-color-border);
}

.gc-section-title {
  font-family: var(--gc-font-title);
  font-size: 1.6rem;
  color: var(--gc-color-primary);
  margin-bottom: 0.4rem;
  position: relative;
  display: inline-block;
}

.gc-section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 2px;
  background-color: var(--gc-color-primary);
  margin-top: 0.5rem;
}

.gc-section-desc {
  color: var(--gc-color-text-muted);
  font-size: 0.95rem;
  margin-bottom: 2rem;
  max-width: 600px;
}

/* --- Video Grid --- */
.gc-video-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.gc-video-card {
  background-color: var(--gc-color-bg-card);
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--gc-color-border);
  transition: transform 0.3s ease;
}

.gc-video-card:hover {
  transform: translateY(-4px);
}

.gc-video-wrapper {
  position: relative;
  width: 100%;
  padding-top: 56.25%;
  background-color: #000;
}

.gc-video-player {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.gc-video-info {
  padding: 1rem;
}

.gc-video-title {
  font-size: 1rem;
  color: var(--gc-color-primary);
  margin-bottom: 0.4rem;
}

.gc-video-desc {
  font-size: 0.85rem;
  color: var(--gc-color-text-muted);
}

/* --- Review Cards --- */
.gc-review-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.gc-review-card {
  display: flex;
  gap: 1.2rem;
  background-color: var(--gc-color-bg-card);
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--gc-color-border);
  transition: transform 0.3s ease;
}

.gc-review-card:hover {
  transform: translateY(-3px);
}

.gc-review-image {
  width: 200px;
  min-height: 180px;
  object-fit: cover;
  flex-shrink: 0;
}

.gc-review-body {
  padding: 1.2rem 1.2rem 1.2rem 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.gc-review-title {
  font-size: 1.1rem;
  color: var(--gc-color-primary);
  margin-bottom: 0.5rem;
}

.gc-review-excerpt {
  font-size: 0.9rem;
  color: var(--gc-color-text-muted);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.gc-review-meta {
  margin-top: 0.6rem;
  font-size: 0.8rem;
  color: var(--gc-color-text-muted);
}

/* --- Director Feature --- */
.gc-director-feature {
  display: flex;
  gap: 2rem;
  align-items: flex-start;
}

.gc-director-portrait {
  width: 280px;
  border-radius: 8px;
  flex-shrink: 0;
  border: 2px solid var(--gc-color-border);
}

.gc-director-info {
  flex: 1;
}

.gc-director-name {
  font-size: 1.4rem;
  color: var(--gc-color-primary);
  margin-bottom: 0.6rem;
}

.gc-director-bio {
  font-size: 0.95rem;
  color: var(--gc-color-text);
  line-height: 1.9;
  margin-bottom: 1rem;
}

.gc-filmography {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.gc-filmography-item {
  background-color: rgba(225, 193, 110, 0.12);
  border: 1px solid var(--gc-color-border);
  padding: 0.3rem 0.8rem;
  border-radius: 20px;
  font-size: 0.85rem;
  color: var(--gc-color-primary);
}

/* --- Mailbox Cards --- */
.gc-mailbox-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.2rem;
}

.gc-mailbox-card {
  background: linear-gradient(135deg, #3A2E1E 0%, #2E2419 100%);
  border: 1px solid var(--gc-color-border);
  border-radius: 8px;
  padding: 1.5rem;
  position: relative;
  overflow: hidden;
}

.gc-mailbox-card::before {
  content: '\201C';
  position: absolute;
  top: -10px;
  left: 10px;
  font-size: 4rem;
  color: rgba(225, 193, 110, 0.15);
  font-family: Georgia, serif;
}

.gc-mailbox-quote {
  font-size: 0.95rem;
  color: var(--gc-color-text);
  line-height: 1.8;
  font-style: italic;
  margin-bottom: 0.8rem;
}

.gc-mailbox-author {
  font-size: 0.85rem;
  color: var(--gc-color-text-muted);
  text-align: right;
}

/* --- Soundtrack --- */
.gc-soundtrack-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1.2rem;
}

.gc-soundtrack-card {
  background-color: var(--gc-color-bg-card);
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--gc-color-border);
  text-align: center;
  transition: transform 0.3s ease;
}

.gc-soundtrack-card:hover {
  transform: translateY(-3px);
}

.gc-soundtrack-cover {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
}

.gc-soundtrack-info {
  padding: 0.8rem;
}

.gc-soundtrack-title {
  font-size: 0.95rem;
  color: var(--gc-color-primary);
  margin-bottom: 0.3rem;
}

.gc-soundtrack-artist {
  font-size: 0.8rem;
  color: var(--gc-color-text-muted);
}

.gc-audio-player {
  width: 100%;
  height: 36px;
  margin-top: 0.5rem;
}

/* --- Behind Scenes --- */
.gc-behind-card {
  background-color: var(--gc-color-bg-card);
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--gc-color-border);
  display: flex;
  gap: 1.5rem;
}

.gc-behind-image {
  width: 400px;
  min-height: 250px;
  object-fit: cover;
  flex-shrink: 0;
}

.gc-behind-content {
  padding: 1.5rem 1.5rem 1.5rem 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.gc-behind-quote {
  font-size: 1.1rem;
  color: var(--gc-color-text);
  line-height: 1.9;
  font-style: italic;
  border-left: 3px solid var(--gc-color-primary);
  padding-left: 1rem;
  margin-bottom: 1rem;
}

.gc-behind-source {
  font-size: 0.9rem;
  color: var(--gc-color-text-muted);
}

/* --- Top Films List --- */
.gc-topfilms-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1rem;
}

.gc-topfilm-card {
  background-color: var(--gc-color-bg-card);
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--gc-color-border);
  transition: transform 0.3s ease;
  position: relative;
}

.gc-topfilm-card:hover {
  transform: translateY(-4px);
}

.gc-topfilm-rank {
  position: absolute;
  top: 8px;
  left: 8px;
  background-color: var(--gc-color-primary);
  color: var(--gc-color-dark);
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: bold;
  z-index: 2;
}

.gc-topfilm-poster {
  width: 100%;
  aspect-ratio: 3/4;
  object-fit: cover;
}

.gc-topfilm-info {
  padding: 0.6rem;
}

.gc-topfilm-title {
  font-size: 0.85rem;
  color: var(--gc-color-primary);
  margin-bottom: 0.2rem;
}

.gc-topfilm-desc {
  font-size: 0.75rem;
  color: var(--gc-color-text-muted);
}

/* --- Footer --- */
.gc-footer {
  background-color: var(--gc-color-dark);
  border-top: 2px solid var(--gc-color-primary);
  padding: 3rem 0 0;
}

.gc-footer-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  max-width: var(--gc-max-width);
  margin: 0 auto;
  padding: 0 1rem 2rem;
}

.gc-footer-title {
  font-size: 1.1rem;
  color: var(--gc-color-primary);
  margin-bottom: 1rem;
  font-family: var(--gc-font-title);
}

.gc-footer-text {
  font-size: 0.85rem;
  color: var(--gc-color-text-muted);
  line-height: 1.8;
}

.gc-footer-links {
  list-style: none;
}

.gc-footer-link {
  display: block;
  color: var(--gc-color-text-muted);
  font-size: 0.85rem;
  padding: 0.3rem 0;
  transition: color 0.3s ease;
}

.gc-footer-link:hover {
  color: var(--gc-color-primary);
  text-decoration: none;
}

.gc-footer-honors {
  background-color: rgba(225, 193, 110, 0.05);
  border-top: 1px solid var(--gc-color-border);
  padding: 1.5rem 1rem;
}

.gc-honors-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.5rem;
  max-width: var(--gc-max-width);
  margin: 0 auto;
}

.gc-honor-item {
  font-size: 0.85rem;
  color: var(--gc-color-text-light);
  white-space: nowrap;
}

.gc-footer-bottom {
  background-color: rgba(0,0,0,0.3);
  text-align: center;
  padding: 1rem;
}

.gc-footer-license {
  font-size: 0.8rem;
  color: var(--gc-color-text-muted);
  margin-bottom: 0.3rem;
}

.gc-footer-copyright {
  font-size: 0.75rem;
  color: var(--gc-color-text-muted);
}

/* --- Inner Page Styles --- */
.gc-page-header {
  position: relative;
  height: 300px;
  overflow: hidden;
}

.gc-page-header-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.4) saturate(0.7);
}

.gc-page-header-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(to bottom, rgba(26,20,16,0.4), rgba(26,20,16,0.8));
}

.gc-page-header-title {
  font-size: 2.2rem;
  color: var(--gc-color-primary);
  text-align: center;
  text-shadow: 0 2px 8px rgba(0,0,0,0.6);
}

.gc-breadcrumb {
  padding: 0.8rem 0;
  font-size: 0.85rem;
  color: var(--gc-color-text-muted);
}

.gc-breadcrumb a {
  color: var(--gc-color-text-muted);
}

.gc-breadcrumb a:hover {
  color: var(--gc-color-primary);
}

.gc-breadcrumb-sep {
  margin: 0 0.4rem;
  color: var(--gc-color-border);
}

/* --- Article Content --- */
.gc-article {
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem 1rem 3rem;
}

.gc-article p {
  font-size: 1rem;
  line-height: 2;
  margin-bottom: 1.2rem;
  text-indent: 2em;
}

.gc-article-image {
  width: 100%;
  border-radius: 8px;
  margin: 1.5rem 0;
  border: 1px solid var(--gc-color-border);
}

.gc-article blockquote {
  border-left: 3px solid var(--gc-color-primary);
  padding: 1rem 1.5rem;
  margin: 1.5rem 0;
  background-color: rgba(225, 193, 110, 0.05);
  font-style: italic;
  color: var(--gc-color-text-light);
}

/* --- Film Card Grid (for category pages) --- */
.gc-film-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1.5rem;
  padding: 2rem 0;
}

.gc-film-card {
  background-color: var(--gc-color-bg-card);
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--gc-color-border);
  transition: transform 0.3s ease;
}

.gc-film-card:hover {
  transform: translateY(-4px);
}

.gc-film-poster {
  width: 100%;
  aspect-ratio: 3/4;
  object-fit: cover;
}

.gc-film-info {
  padding: 0.8rem;
}

.gc-film-name {
  font-size: 0.95rem;
  color: var(--gc-color-primary);
  margin-bottom: 0.3rem;
}

.gc-film-meta {
  font-size: 0.8rem;
  color: var(--gc-color-text-muted);
}

.gc-film-rating {
  display: inline-block;
  background-color: rgba(225, 193, 110, 0.15);
  color: var(--gc-color-primary);
  padding: 0.1rem 0.5rem;
  border-radius: 4px;
  font-size: 0.8rem;
  margin-top: 0.3rem;
}

/* --- Form Styles --- */
.gc-form-group {
  margin-bottom: 1.2rem;
}

.gc-form-label {
  display: block;
  font-size: 0.9rem;
  color: var(--gc-color-text-light);
  margin-bottom: 0.4rem;
  font-family: var(--gc-font-sans);
}

.gc-form-input,
.gc-form-textarea,
.gc-form-select {
  width: 100%;
  background-color: rgba(255,255,255,0.06);
  border: 1px solid var(--gc-color-border);
  border-radius: 6px;
  padding: 0.7rem 1rem;
  color: var(--gc-color-text);
  font-size: 0.95rem;
  font-family: var(--gc-font-body);
  transition: border-color 0.3s ease;
}

.gc-form-input:focus,
.gc-form-textarea:focus {
  outline: none;
  border-color: var(--gc-color-primary);
}

.gc-form-textarea {
  min-height: 120px;
  resize: vertical;
}

.gc-form-submit {
  background-color: var(--gc-color-primary);
  color: var(--gc-color-dark);
  border: 2px solid var(--gc-color-primary);
  padding: 0.7rem 2rem;
  font-size: 1rem;
  font-family: var(--gc-font-title);
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.gc-form-submit:hover {
  background-color: transparent;
  color: var(--gc-color-primary);
}

/* --- Mailbox Page Layout --- */
.gc-mailbox-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  padding: 2rem 0;
}

.gc-mailbox-letters {
  background-color: var(--gc-color-bg-card);
  border-radius: 8px;
  padding: 1.5rem;
  border: 1px solid var(--gc-color-border);
}

.gc-mailbox-form-wrapper {
  background-color: var(--gc-color-bg-card);
  border-radius: 8px;
  padding: 1.5rem;
  border: 1px solid var(--gc-color-border);
}

.gc-letter-item {
  border-bottom: 1px solid var(--gc-color-border);
  padding: 1rem 0;
}

.gc-letter-item:last-child {
  border-bottom: none;
}

/* --- APP Download Page --- */
.gc-app-hero {
  text-align: center;
  padding: 4rem 1rem;
}

.gc-app-mockup {
  max-width: 300px;
  margin: 2rem auto;
  border-radius: 20px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}

.gc-app-buttons {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-top: 2rem;
}

.gc-app-btn {
  display: inline-block;
  background-color: var(--gc-color-bg-card);
  border: 2px solid var(--gc-color-primary);
  color: var(--gc-color-primary);
  padding: 0.8rem 2rem;
  border-radius: 6px;
  font-family: var(--gc-font-title);
  font-size: 1rem;
  transition: all 0.3s ease;
  text-decoration: none;
  cursor: pointer;
}

.gc-app-btn:hover {
  background-color: var(--gc-color-primary);
  color: var(--gc-color-dark);
  text-decoration: none;
}

/* --- Modal --- */
.gc-modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0,0,0,0.85);
  z-index: 10000;
  align-items: center;
  justify-content: center;
}

.gc-modal-overlay.gc-open {
  display: flex;
}

.gc-modal-content {
  background-color: var(--gc-color-bg-card);
  border-radius: 12px;
  padding: 2rem;
  max-width: 500px;
  width: 90%;
  text-align: center;
  border: 1px solid var(--gc-color-primary);
}

.gc-modal-close {
  background: none;
  border: none;
  color: var(--gc-color-primary);
  font-size: 1.5rem;
  cursor: pointer;
  float: right;
}

/* --- Letter Animation --- */
.gc-letter-animation {
  display: none;
  text-align: center;
  padding: 2rem;
}

.gc-letter-envelope {
  width: 80px;
  height: 60px;
  background-color: var(--gc-color-primary);
  border-radius: 4px;
  margin: 0 auto 1rem;
  position: relative;
  animation: gc-fly-in 1s ease-out;
}

@keyframes gc-fly-in {
  0% {
    transform: translateY(-100px) rotate(-15deg);
    opacity: 0;
  }
  60% {
    transform: translateY(10px) rotate(3deg);
    opacity: 1;
  }
  100% {
    transform: translateY(0) rotate(0);
    opacity: 1;
  }
}

/* --- Responsive Breakpoints --- */
/* 320px - Mobile Small */
@media (max-width: 480px) {
  html { font-size: 14px; }
  
  .gc-hero { height: 50vh; min-height: 300px; }
  .gc-hero-title { font-size: 1.6rem; }
  
  .gc-video-grid,
  .gc-review-grid,
  .gc-mailbox-grid,
  .gc-topfilms-grid {
    grid-template-columns: 1fr;
  }
  
  .gc-director-feature {
    flex-direction: column;
  }
  
  .gc-director-portrait {
    width: 100%;
    max-width: 280px;
  }
  
  .gc-behind-card {
    flex-direction: column;
  }
  
  .gc-behind-image {
    width: 100%;
    min-height: 200px;
  }
  
  .gc-behind-content {
    padding: 1rem;
  }
  
  .gc-footer-grid {
    grid-template-columns: 1fr;
  }
  
  .gc-mailbox-layout {
    grid-template-columns: 1fr;
  }
  
  .gc-review-card {
    flex-direction: column;
  }
  
  .gc-review-image {
    width: 100%;
    min-height: 150px;
  }
  
  .gc-review-body {
    padding: 1rem;
  }
}

/* 768px - Tablet */
@media (max-width: 768px) {
  .gc-nav-links {
    display: none;
  }
  
  .gc-nav-right {
    display: none;
  }
  
  .gc-hamburger {
    display: flex;
  }
  
  .gc-video-grid {
    grid-template-columns: 1fr;
  }
  
  .gc-review-grid {
    grid-template-columns: 1fr;
  }
  
  .gc-mailbox-grid {
    grid-template-columns: 1fr 1fr;
  }
  
  .gc-topfilms-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .gc-footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  
  .gc-honors-grid {
    flex-direction: column;
    align-items: center;
  }
  
  .gc-director-feature {
    flex-direction: column;
  }
  
  .gc-director-portrait {
    width: 100%;
    max-width: 280px;
  }
  
  .gc-behind-card {
    flex-direction: column;
  }
  
  .gc-behind-image {
    width: 100%;
  }
  
  .gc-behind-content {
    padding: 1rem;
  }
  
  .gc-mailbox-layout {
    grid-template-columns: 1fr;
  }
  
  .gc-review-card {
    flex-direction: column;
  }
  
  .gc-review-image {
    width: 100%;
    min-height: 180px;
  }
  
  .gc-review-body {
    padding: 1rem;
  }
  
  .gc-app-buttons {
    flex-direction: column;
    align-items: center;
  }
}

/* 1024px - Tablet Landscape */
@media (max-width: 1024px) {
  .gc-topfilms-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .gc-nav-link {
    font-size: 0.82rem;
    padding: 0.3rem 0.5rem;
  }
  
  .gc-search-box {
    width: 120px;
  }
}

/* 1440px - Desktop Large */
@media (min-width: 1441px) {
  :root {
    --gc-max-width: 1320px;
  }
  
  .gc-hero-title {
    font-size: 3rem;
  }
}

/* --- Light Leak Effect --- */
.gc-light-leak {
  position: relative;
  overflow: hidden;
}

.gc-light-leak::after {
  content: '';
  position: absolute;
  top: 0;
  right: -20%;
  width: 40%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(225, 193, 110, 0.06) 50%,
    transparent 100%
  );
  pointer-events: none;
}

/* --- Vintage Border --- */
.gc-vintage-border {
  border: 2px solid var(--gc-color-border);
  padding: 4px;
  background-color: rgba(225, 193, 110, 0.03);
}

/* --- Utility --- */
.gc-text-center { text-align: center; }
.gc-mt-1 { margin-top: 0.5rem; }
.gc-mt-2 { margin-top: 1rem; }
.gc-mt-3 { margin-top: 1.5rem; }
.gc-mb-1 { margin-bottom: 0.5rem; }
.gc-mb-2 { margin-bottom: 1rem; }
.gc-mb-3 { margin-bottom: 1.5rem; }

/* ============================================
   APP Download Page Styles
   ============================================ */

.gc-app-hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
  padding: 4rem 0;
}

.gc-app-hero-content {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.gc-app-hero-title {
  font-family: var(--gc-font-title);
  font-size: 2.5rem;
  color: var(--gc-color-primary);
  line-height: 1.3;
}

.gc-app-hero-subtitle {
  font-family: var(--gc-font-title);
  font-size: 1.3rem;
  color: var(--gc-color-text-light);
}

.gc-app-hero-desc {
  font-size: 0.95rem;
  color: var(--gc-color-text);
  line-height: 2;
}

.gc-app-hero-image {
  display: flex;
  justify-content: center;
  align-items: center;
}

.gc-app-btn-ios,
.gc-app-btn-android {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.8rem 1.5rem;
  border: 1px solid var(--gc-color-primary);
  border-radius: 8px;
  color: var(--gc-color-primary);
  text-decoration: none;
  transition: all 0.3s ease;
  background: transparent;
}

.gc-app-btn-ios:hover,
.gc-app-btn-android:hover {
  background-color: var(--gc-color-primary);
  color: var(--gc-color-dark);
}

.gc-app-btn-icon {
  font-size: 1.5rem;
}

.gc-app-btn-text {
  display: flex;
  flex-direction: column;
  line-height: 1.3;
}

.gc-app-btn-text small {
  font-size: 0.7rem;
  opacity: 0.8;
}

.gc-app-btn-text strong {
  font-size: 1rem;
}

.gc-app-features {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

.gc-app-feature-card {
  background-color: var(--gc-color-bg-card);
  border: 1px solid var(--gc-color-border);
  border-radius: 8px;
  padding: 2rem 1.5rem;
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.gc-app-feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(0,0,0,0.3);
}

.gc-app-feature-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.gc-app-feature-title {
  font-family: var(--gc-font-title);
  font-size: 1.1rem;
  color: var(--gc-color-primary);
  margin-bottom: 0.8rem;
}

.gc-app-feature-desc {
  font-size: 0.85rem;
  color: var(--gc-color-text);
  line-height: 1.8;
}

.gc-app-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  padding: 2rem 0;
}

.gc-app-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.gc-app-stat-number {
  font-family: var(--gc-font-title);
  font-size: 2.5rem;
  color: var(--gc-color-primary);
  font-weight: bold;
}

.gc-app-stat-label {
  font-size: 0.9rem;
  color: var(--gc-color-text-light);
}

/* ============================================
   Mailbox Form & Envelope Animation
   ============================================ */

.gc-form-wrapper {
  max-width: 700px;
  margin: 0 auto;
}

.gc-mailbox-intro {
  text-align: center;
  margin-bottom: 2rem;
}

.gc-envelope {
  width: 200px;
  height: 140px;
  margin: 2rem auto;
  perspective: 600px;
}

.gc-envelope-body {
  width: 100%;
  height: 100%;
  background-color: var(--gc-color-bg-card);
  border: 2px solid var(--gc-color-primary);
  border-radius: 4px;
  position: relative;
  overflow: hidden;
  animation: gc-envelope-shake 0.6s ease-in-out;
}

.gc-envelope-flap {
  width: 0;
  height: 0;
  border-left: 100px solid transparent;
  border-right: 100px solid transparent;
  border-top: 70px solid var(--gc-color-primary);
  position: absolute;
  top: 0;
  left: 0;
  animation: gc-flap-open 0.8s ease forwards;
}

.gc-letter-paper {
  position: absolute;
  bottom: 10px;
  left: 10px;
  right: 10px;
  background: var(--gc-color-text);
  border-radius: 2px;
  animation: gc-letter-rise 1s ease 0.3s forwards;
  transform: translateY(100%);
}

@keyframes gc-envelope-shake {
  0%, 100% { transform: rotate(0); }
  25% { transform: rotate(-3deg); }
  75% { transform: rotate(3deg); }
}

@keyframes gc-flap-open {
  0% { transform: rotateX(0); }
  100% { transform: rotateX(180deg); opacity: 0.5; }
}

@keyframes gc-letter-rise {
  0% { transform: translateY(100%); }
  100% { transform: translateY(0); }
}

/* ============================================
   APP Page Responsive
   ============================================ */

@media (max-width: 768px) {
  .gc-app-hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .gc-app-hero-title {
    font-size: 1.8rem;
  }

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

  .gc-app-stats {
    grid-template-columns: 1fr 1fr;
  }

  .gc-app-buttons {
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .gc-app-features {
    grid-template-columns: 1fr;
  }

  .gc-app-stats {
    grid-template-columns: 1fr 1fr;
  }
}