/* Minecraft Mod Showcase Theme */

:root {
  --bg-dark: #1a1a1a;
  --bg-panel: #2d2d2d;
  --bg-card: #333333;
  --bg-hover: #3a3a3a;
  --text-primary: #e0e0e0;
  --text-secondary: #a0a0a0;
  --text-muted: #707070;
  --accent-green: #4a9c4a;
  --accent-green-hover: #5cb85c;
  --accent-brown: #8b6b3d;
  --accent-brown-light: #a8884a;
  --border-color: #444444;
  --shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
  --radius: 8px;
  --font-stack: "Segoe UI", system-ui, -apple-system, sans-serif;
  --hero-height: 100vh;
  --navbar-height: 56px;
}

/* Reset & Base */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-stack);
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  padding-top: var(--navbar-height);
}

a {
  color: var(--accent-green);
  text-decoration: none;
}
a:hover {
  color: var(--accent-green-hover);
}

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

/* Navbar */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--navbar-height);
  background: rgba(26, 26, 26, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
  transition: box-shadow 0.3s ease;
}

.navbar.scrolled {
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.5);
}

.navbar-brand {
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  cursor: pointer;
  user-select: none;
}

.navbar-links {
  display: flex;
  gap: 0.25rem;
  position: relative;
}

.nav-indicator {
  position: absolute;
  bottom: 0;
  left: 0;
  height: 100%;
  border-radius: var(--radius);
  background: rgba(74, 156, 74, 0.12);
  transition: left 0.25s ease, width 0.25s ease;
  pointer-events: none;
  z-index: 0;
}

.nav-link {
  position: relative;
  z-index: 1;
}

.nav-link {
  padding: 0.4rem 1rem;
  border-radius: var(--radius);
  font-size: 0.9rem;
  color: var(--text-secondary);
  cursor: pointer;
  user-select: none;
  transition: background 0.2s, color 0.2s;
  border: none;
  background: transparent;
  font-family: inherit;
}

.nav-link:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.nav-link.active {
  color: var(--accent-green);
}
.nav-link.active:hover {
  background: transparent;
}

/* Hero Section */

.hero {
  height: calc(var(--hero-height) - var(--navbar-height));
  background-image: url("../assets/background.png");
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
}

.hero-content {
  position: relative;
  z-index: 1;
  padding: 1rem;
  animation: hero-enter 1s ease forwards;
}

@keyframes hero-enter {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

.hero-title {
  font-size: clamp(2.5rem, 8vw, 5rem);
  font-weight: 400;
  letter-spacing: 0.05em;
  margin-bottom: 0.75rem;
  background: linear-gradient(135deg, #7ecf7e, #ffd700 50%, #7ecf7e);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: shimmer 4s ease-in-out infinite;
  text-shadow: none;
  filter: drop-shadow(0 0 20px rgba(126, 207, 126, 0.3));
}

@keyframes shimmer {
  0%, 100% { background-position: 0% center; }
  50% { background-position: 100% center; }
}

.hero-subtitle {
  font-size: clamp(1rem, 2.5vw, 1.5rem);
  color: rgba(255, 255, 255, 0.8);
  text-shadow: 0 1px 6px rgba(0, 0, 0, 0.7);
}

.hero-scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.85rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  animation: bounce-down 2s infinite;
}

.hero-scroll-arrow {
  width: 24px;
  height: 24px;
  border-right: 2px solid rgba(255, 255, 255, 0.6);
  border-bottom: 2px solid rgba(255, 255, 255, 0.6);
  transform: rotate(45deg);
}

@keyframes bounce-down {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* Section Layout */

.section {
  padding: 3rem 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
}

.section-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--accent-brown-light);
  text-align: center;
  position: relative;
  padding-bottom: 0.75rem;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 48px;
  height: 2px;
  background: var(--accent-brown-light);
  border-radius: 1px;
}

.section-subtitle {
  color: var(--text-secondary);
  margin-bottom: 2rem;
  font-size: 0.95rem;
  text-align: center;
}

/* Mod Cards Grid */

.mod-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  justify-content: center;
}

.mod-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1.25rem;
  cursor: pointer;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease, border-color 0.25s ease;
  display: flex;
  flex-direction: column;
  gap: 1.0rem;
  width: 280px;
  animation: card-enter 0.5s ease backwards;
}

.mod-card:nth-child(1) { animation-delay: 0s; }
.mod-card:nth-child(2) { animation-delay: 0.1s; }
.mod-card:nth-child(3) { animation-delay: 0.2s; }
.mod-card:nth-child(4) { animation-delay: 0.3s; }
.mod-card:nth-child(5) { animation-delay: 0.4s; }

@keyframes card-enter {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.mod-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.5);
  background: var(--bg-hover);
  border-color: var(--accent-green);
}

.mod-card-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.mod-card-icon {
  width: 54px;
  height: 54px;
  padding: 3px;
  border-radius: 8px;
  object-fit: cover;
  background: rgba(255, 255, 255, 0.06);
}

.mod-card-name {
  font-size: 1.1rem;
  font-weight: 600;
  color: #fff;
}

.mod-card-summary {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.mod-card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: auto;
}

.tag {
  display: inline-block;
  font-size: 0.75rem;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  background: var(--bg-panel);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
}

.tag-version {
  background: rgba(74, 156, 74, 0.15);
  color: var(--accent-green);
  border-color: rgba(74, 156, 74, 0.3);
}

.tag-loader {
  background: rgba(168, 136, 74, 0.15);
  color: var(--accent-brown-light);
  border-color: rgba(168, 136, 74, 0.3);
}

/* Mod Detail — Modal Overlay */

.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(0, 0, 0, 0);
  backdrop-filter: blur(0px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s ease, background 0.35s ease, backdrop-filter 0.35s ease;
}

.modal-overlay.active {
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(2px);
  opacity: 1;
  pointer-events: auto;
}

.modal-window {
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  max-width: 420px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  padding: 1.5rem 1.5rem 1.75rem;
  position: relative;
  animation: modal-in 0.25s ease;
}

@keyframes modal-in {
  from { opacity: 0; transform: scale(0.95) translateY(10px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

@keyframes modal-out {
  from { opacity: 1; transform: scale(1) translateY(0); }
  to { opacity: 0; transform: scale(0.95) translateY(10px); }
}

.modal-window.closing {
  animation: modal-out 0.2s ease forwards;
}

.modal-close {
  position: absolute;
  top: 0.6rem;
  right: 0.6rem;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: inherit;
  padding: 0;
  overflow: hidden;
  z-index: 1;
}

/* Red overlay that scales in from center */
.modal-close::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: rgba(200, 30, 30, 0.5);
  transform: scale(0);
  transition: transform 0.3s ease;
  z-index: -1;
}

.modal-close:hover::before {
  transform: scale(1);
}

.modal-close:hover {
  color: #fff;
}

.modal-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.25rem;
  padding-right: 2.5rem;
}

.modal-icon {
  width: 84px;
  height: 84px;
  padding: 5px;
  border-radius: 12px;
  object-fit: cover;
  background: rgba(255, 255, 255, 0.06);
  flex-shrink: 0;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.08);
}

.modal-info-name {
  font-size: 1.5rem;
  font-weight: 700;
  color: #fff;
  line-height: 1.2;
}

.modal-info-version {
  color: var(--text-secondary);
  font-size: 0.85rem;
  margin-top: 0.2rem;
}

.modal-actions {
  display: flex;
  gap: 0.4rem;
  margin-top: 0.5rem;
  flex-wrap: wrap;
}

.modal-actions .btn {
  padding: 0.25rem 0.7rem;
  font-size: 0.8rem;
}

/* Screenshot Gallery (in modal) */

.modal-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.modal-gallery img {
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  width: 100%;
  height: 140px;
  object-fit: cover;
  cursor: pointer;
  transition: transform 0.2s;
}

.modal-gallery img:hover {
  transform: scale(1.03);
}

/* Detail Sections (in modal) */

.modal-section {
  margin-bottom: 1.25rem;
}

.modal-section:last-child {
  margin-bottom: 0;
}

.modal-section h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--accent-brown-light);
  margin-bottom: 0.4rem;
}

.modal-description {
  color: var(--text-secondary);
  line-height: 1.7;
  white-space: pre-wrap;
  font-size: 0.9rem;
}

.modal-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

/* Compatibility Detail — inline chips */

.compat-block {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
}

.compat-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.compat-chip-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  white-space: nowrap;
}

/* Buttons */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.9rem;
  border-radius: var(--radius);
  font-size: 0.85rem;
  font-weight: 500;
  border: none;
  cursor: pointer;
  transition: background 0.2s;
  text-decoration: none;
  font-family: inherit;
}

.btn-github {
  background: #24292e;
  color: #fff;
}
.btn-github:hover {
  background: #3a3f45;
  color: #fff;
}

.btn-resource {
  background: var(--accent-brown);
  color: #fff;
}
.btn-resource:hover {
  background: var(--accent-brown-light);
  color: #fff;
}

/* Tab Content Transition */

.tab-content {
  transition: opacity 0.25s ease;
}

.tab-content.fade-out {
  opacity: 0;
}

/* Footer */

.footer {
  text-align: center;
  padding: 2rem 1rem;
  border-top: 1px solid var(--border-color);
  color: var(--text-muted);
  font-size: 0.85rem;
}

.footer-icp {
  margin-top: 0.5rem;
  color: var(--text-muted);
  font-size: 0.8rem;
}

.footer-icp a, .footer-copy a {
  color: var(--text-muted);
  transition: color 0.2s;
}

.footer-icp a:hover, .footer-copy a:hover {
  color: var(--text-primary);
}

/* Terminal Buttons (2×3 grid) */

.term-btn-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  max-width: 540px;
  margin: 0 auto;
}

.term-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1.25rem 0.75rem;
  cursor: pointer;
  font-family: var(--font-stack);
  text-align: center;
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3rem;
}

.term-btn:hover {
  transform: translateY(-4px);
  border-color: var(--accent-green);
  background: var(--bg-hover);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
}

.term-btn-id {
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  letter-spacing: 0.03em;
}

.term-btn-size {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Terminal Overlay */

.term-overlay {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(0, 0, 0, 0);
  backdrop-filter: blur(0px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s ease, background 0.35s ease, backdrop-filter 0.35s ease;
}

.term-overlay.active {
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(2px);
  opacity: 1;
  pointer-events: auto;
}

.term-window {
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  width: fit-content;
  min-width: 280px;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  animation: modal-in 0.25s ease;
}

.term-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
}

.term-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: 0.05em;
}

.term-close-btn {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s, color 0.2s;
}

.term-close-btn:hover {
  background: rgba(200, 30, 30, 0.5);
  color: #fff;
}

.term-body {
  padding: 1rem 1rem 0.75rem;
}

/* Terminal Grid */

.term-grid {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  margin-bottom: 0.5rem;
}

.term-row {
  display: flex;
  gap: 4px;
}

.term-cell {
  width: 56px;
  height: 56px;
  border-radius: 6px;
  border: 1px solid var(--border-color);
  background: var(--bg-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-family: var(--font-stack);
  color: var(--text-primary);
  cursor: pointer;
  padding: 0;
  transition: transform 0.1s ease, opacity 0.15s ease, box-shadow 0.1s ease;
  user-select: none;
  -webkit-user-select: none;
}


/* PANES cells */

.pane-green {
  background: #3db83d;
  border-color: #50cc50;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.pane-red {
  background: #b83d3d;
  border-color: #cc5050;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.pane-green:hover, .pane-red:hover {
  filter: brightness(1.2);
}

/* RUBIX cells */

.rubix-cell {
  border-color: rgba(255, 255, 255, 0.15);
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.5);
}

.rubix-cell:hover {
  filter: brightness(1.2);
}

.rubix-done {
  box-shadow: inset 0 0 0 2px rgba(255, 255, 255, 0.4);
  border: none;
  opacity: 0.7;
}

/* NUMBERS cells */

.num-cell {
  background: var(--bg-dark);
  font-size: 1rem;
  font-weight: 600;
}

.num-cell:hover:not(:disabled) {
  border-color: var(--accent-green);
  box-shadow: 0 0 8px rgba(74, 156, 74, 0.3);
}

.num-done {
  background: #2a2a2a;
  border-color: #3a3a3a;
  color: var(--text-muted);
  opacity: 0.4;
  cursor: default;
  text-decoration: line-through;
}

.num-current {
  background: #55ff55;
  border-color: #55ff55;
  color: #fff;
  box-shadow: 0 0 8px rgba(85, 255, 85, 0.2);
}

.num-next {
  background: #3bb33b;
  border-color: #3bb33b;
  color: #fff;
}

.num-next2 {
  background: #2a7d2a;
  border-color: #2a7d2a;
  color: #fff;
}

.num-cell, .num-current, .num-next, .num-next2, .num-done {
  color: #fff;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.5);
}

.num-shake {
  animation: shake 0.4s ease;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-6px); }
  40% { transform: translateX(6px); }
  60% { transform: translateX(-4px); }
  80% { transform: translateX(4px); }
}

/* STARTS_WITH cells */

.sw-cell {
  background: var(--bg-dark);
}

.sw-target {
  background: #55ff55;
  border-color: #55ff55;
}

.sw-target:hover:not(:disabled) {
  filter: brightness(1.15);
}

.sw-done {
  background: var(--bg-dark);
  border-color: var(--border-color);
  cursor: default;
}

.sw-shake {
  animation: shake 0.4s ease;
}

/* SELECT cells */

.sel-cell {
  background: var(--bg-dark);
}

.sel-target {
  background: #55ff55;
  border-color: #55ff55;
}

.sel-target:hover:not(:disabled) {
  filter: brightness(1.15);
}

.sel-done {
  background: var(--bg-dark);
  border-color: var(--border-color);
  cursor: default;
}

.sel-shake {
  animation: shake 0.4s ease;
}

/* MELODY cells */

.melody-slot {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.06);
  cursor: default;
}

.melody-slot-done {
  background: rgba(74, 156, 74, 0.15);
  border-color: rgba(74, 156, 74, 0.2);
}

.melody-purple {
  background: #6a2d8a;
  border-color: #7a3a9a;
  cursor: default;
}

.melody-green {
  background: #2d8a2d;
  border-color: #3a9a3a;
  box-shadow: 0 0 10px rgba(45, 138, 45, 0.5);
  cursor: default;
}

.melody-empty {
  background: transparent;
  border-color: transparent;
  cursor: default;
}

.melody-btn {
  background: var(--bg-card);
  border-color: var(--border-color);
  font-size: 1rem;
  cursor: pointer;
}

.melody-btn:hover:not(:disabled) {
  border-color: var(--accent-green);
  background: var(--bg-hover);
  box-shadow: 0 0 8px rgba(74, 156, 74, 0.3);
}

.melody-btn-idle {
  opacity: 0.3;
  cursor: default;
}

.melody-btn-done {
  background: rgba(74, 156, 74, 0.2);
  border-color: rgba(74, 156, 74, 0.3);
  color: var(--accent-green);
  cursor: default;
  opacity: 0.6;
}

/* Terminal Status */

.term-status {
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-secondary);
  padding: 0.5rem 0 0.25rem;
  min-height: 1.8rem;
}

.term-win {
  color: var(--accent-green);
  font-weight: 600;
}

/* Tab Content Placeholder */

.tab-placeholder {
  text-align: center;
  padding: 4rem 1rem;
  color: var(--text-muted);
}

.tab-placeholder h2 {
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
  color: var(--text-secondary);
}

/* Responsive */

@media (max-width: 640px) {
  .mod-card {
    width: 100%;
    max-width: 400px;
  }

  .modal-window {
    max-height: 90vh;
    padding: 1rem;
  }

  .modal-header {
    gap: 0.75rem;
  }

  .modal-icon {
    width: 64px;
    height: 64px;
  }

  .modal-info-name {
    font-size: 1.15rem;
  }

  .modal-gallery {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 2rem 1rem;
  }

  .term-btn-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
  }

  .term-window {
    width: 100%;
    max-width: 100%;
    margin: 0 0.5rem;
  }

  .term-cell {
    width: 44px;
    height: 44px;
    font-size: 0.65rem;
  }
}