/* === GLOBAL === */
* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Poppins', sans-serif;
  color: #EAEAEA;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  overflow-x: hidden;
  background: linear-gradient(-45deg, #0d0d0d, #1a1f1f, #102020, #141a1a);
  background-size: 400% 400%;
  animation: bgShift 18s ease infinite;
}

/* Background animation */
@keyframes bgShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* Background canvas */
#background-canvas {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  z-index: -1;
  background: transparent;
}

/* === NAVIGATION === */
nav {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(20, 25, 25, 0.65);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  z-index: 1000;
  display: flex;
  justify-content: center;
}

nav .container {
  max-width: 1200px;
  width: 100%;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

nav .logo {
  font-size: 1.4rem;
  font-weight: 700;
  color: #29FF89;
  text-decoration: none;
}

nav .nav-links {
  display: flex;
  gap: 1.5rem;
}

nav a {
  color: #EAEAEA;
  text-decoration: none;
  font-weight: 600;
  position: relative;
  transition: color 0.3s;
}

nav a:hover {
  color: #29FF89;
}

/* === MAIN === */
main.container {
  max-width: 1100px;
  margin: 7rem auto 3rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
  width: 90%;
}

/* Glassmorphism panels */
.panel {
  padding: 2rem;
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(14px);
  border-radius: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 0 25px rgba(0, 0, 0, 0.4);
  animation: fadeUp 0.8s ease;
}

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

/* Hero section with background image, vignette, and blur */
.hero-section {
  position: relative;
  padding: 2rem;
  background: url('../../img/banner/banner1.png') no-repeat center center/cover;
  border-radius: 1rem;
  text-align: center;
  margin-bottom: 2rem;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle, rgba(0, 0, 0, 0.3) 0%, rgba(0, 0, 0, 0.7) 70%);
  z-index: 0;
}

.hero-section h1,
.hero-section .description {
  position: relative;
  z-index: 1;
}

/* === TITLES === */
h1 {
  font-size: 2.2rem;
  text-align: center;
  color: #29FF89;
  margin-bottom: 1rem;
}

.description {
  text-align: center;
  opacity: 0.8;
  font-size: 1rem;
  margin-bottom: 1.5rem;
}

/* === SOURCES === */
.sources {
  display: flex;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
}

.source-card {
  background: rgba(255, 255, 255, 0.07);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 1rem;
  padding: 1.2rem;
  width: 200px;
  text-align: center;
  cursor: pointer;
  transition: transform 0.3s, box-shadow 0.3s;
}

.source-card:hover {
  transform: translateY(-6px) scale(1.05);
  box-shadow: 0 0 20px rgba(41, 255, 137, 0.4);
}

.source-card h2 {
  color: #29FF89;
  margin-bottom: 0.5rem;
}

/* === GRADIENT === */
.gradient-container {
  padding: 0.8rem;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 0.8rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.gradient {
  display: flex;
  flex-wrap: wrap;
  gap: 0; /* Blocks are flush */
  justify-content: center;
}

.gradient-square {
  width: 32px;
  height: 32px;
  position: relative;
}

.gradient-square img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  image-rendering: pixelated;
}

/* CORRECTION 1: Superposition correcte des images base et verre */
.gradient-square .base-img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  image-rendering: pixelated;
  z-index: 1;
}

.gradient-square .glass-img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  image-rendering: pixelated;
  z-index: 2;
  opacity: 0.7; /* Transparence pour voir le bloc en dessous */
}

/* === CONTROLS === */
.controls {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2rem;
}

.controls div {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.controls label {
  font-size: 0.9rem;
  opacity: 0.8;
  margin-bottom: 0.5rem;
}

/* Select and input styling */
.controls input,
.controls select {
  background: rgba(20, 20, 20, 0.8);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #ffffff;
  padding: 0.5rem;
  border-radius: 0.5rem;
  width: 130px;
  font-size: 0.9rem;
  transition: border-color 0.3s;
}

.controls input:focus,
.controls select:focus {
  outline: none;
  border-color: #29FF89;
  box-shadow: 0 0 8px rgba(41, 255, 137, 0.6);
}

/* Glass overlay checkbox */
.glass-overlay-section {
  text-align: center;
}

.glass-checkbox {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: 1rem;
  cursor: pointer;
}

.glass-checkbox input[type="checkbox"] {
  width: auto;
  margin: 0;
}

/* === BUTTONS === */
.button-group {
  display: flex;
  gap: 1rem;
}

.controls button {
  background: linear-gradient(135deg, #29FF89, #1ED4F0);
  border: none;
  color: #0d0d0d;
  font-weight: 600;
  padding: 0.8rem 1.2rem;
  border-radius: 0.6rem;
  font-size: 0.9rem;
  cursor: pointer;
  transition: transform 0.25s, box-shadow 0.25s;
}

.controls button:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 0 15px rgba(41, 255, 137, 0.6);
}

/* === FOOTER === */
footer {
  width: 100%;
  background: rgba(20, 25, 25, 0.65);
  backdrop-filter: blur(14px);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 2rem 0;
  margin-top: 2rem;
}

footer .container {
  max-width: 1200px;
  width: 90%;
  margin: 0 auto;
}

.footer-content {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  justify-content: space-between;
}

.footer-section {
  flex: 1;
  min-width: 200px;
}

.footer-section h3 {
  color: #29FF89;
  font-size: 1.2rem;
  margin-bottom: 1rem;
}

.footer-section p {
  opacity: 0.8;
  font-size: 0.9rem;
}

.footer-section ul {
  list-style: none;
  padding: 0;
}

.footer-section ul li {
  margin-bottom: 0.5rem;
}

.footer-section ul li a {
  color: #EAEAEA;
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.3s;
}

.footer-section ul li a:hover {
  color: #29FF89;
}

.footer-bottom {
  text-align: center;
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-bottom p {
  font-size: 0.8rem;
  opacity: 0.7;
}

/* === MODAL === */
.hidden {
  display: none !important;
}

.modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(12px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
}

.modal-content {
  background: rgba(255, 255, 255, 0.07);
  backdrop-filter: blur(18px);
  border-radius: 1rem;
  padding: 2rem;
  max-width: 850px;
  width: 90%;
  max-height: 80vh;
  overflow-y: auto;
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 0 30px rgba(0,0,0,0.7);
  animation: scaleIn 0.4s ease;
}

@keyframes scaleIn {
  from { transform: scale(0.9); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

/* Modal tabs */
.modal-tabs {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.tab-button {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #ffffff;
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
  cursor: pointer;
  transition: background 0.3s, transform 0.3s;
}

.tab-button:hover {
  background: #29FF89;
  color: #0d0d0d;
  transform: translateY(-2px);
}

.tab-button.active {
  background: linear-gradient(135deg, #29FF89, #1ED4F0);
  color: #0d0d0d;
  font-weight: 700;
}

.tab-button.close {
  background: rgba(255, 0, 0, 0.3);
}

.tab-button.close:hover {
  background: rgba(255, 0, 0, 0.6);
}

/* Block grid in modal */
.blocks-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(42px, 1fr));
  gap: 0.5rem;
}

.block-option {
  width: 42px;
  height: 42px;
  cursor: pointer;
  transition: transform 0.25s, box-shadow 0.25s;
}

.block-option:hover {
  transform: scale(1.15);
  box-shadow: 0 0 12px rgba(41, 255, 137, 0.6);
}

.block-option img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  image-rendering: pixelated;
}

/* Tooltip */
.tooltip {
  visibility: hidden;
  position: absolute;
  background: rgba(0, 0, 0, 0.85);
  color: #fff;
  padding: 4px 8px;
  border-radius: 4px;
  bottom: 110%;
  left: 50%;
  transform: translateX(-50%);
  white-space: nowrap;
  z-index: 10;
  font-size: 0.8rem;
}

.gradient-square:hover .tooltip {
  visibility: visible;
}

#sourceA-img {
  width: 50%;
  height: auto;
  image-rendering: pixelated;
}

#sourceB-img {
  width: 50%;
  height: auto;
  image-rendering: pixelated;
}

/* Dropdown styles for nav */
.dropdown {
  position: relative;
  display: inline-block;
}

.dropdown-toggle {
  color: #fff;
  text-decoration: none;
  padding: 0.5rem 1rem;
  transition: color 0.3s;
}

.dropdown-toggle:hover {
  color: #29FF89;
}

.dropdown-menu {
  display: none;
  position: absolute;
  background: rgba(255, 255, 255, 0.07);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 0.5rem;
  min-width: 150px;
  z-index: 1;
  top: 100%;
  left: 0;
}

.dropdown:hover .dropdown-menu {
  display: block;
}

.dropdown-menu a {
  display: block;
  color: #fff;
  padding: 0.5rem 1rem;
  text-decoration: none;
}

.dropdown-menu a:hover {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 0.5rem;
}