/* ===== VARIABLES ===== */
:root {
  --primary-color: #10B981;
  --secondary-color: #0F172A;
  --text-color: #ffffff;
  --handle-color: #cccccc;
  --surface: #1E293B;
  --surface2: #162032;
  --muted: #94A3B8;
  --border: rgba(255,255,255,0.07);
  --font-display: 'Syne', sans-serif;
  --font-mono: 'Space Mono', monospace;
  --glow: rgba(16, 185, 129, 0.25);
}

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

html { 
  overflow-x: hidden;
  scrollbar-gutter: stable; 
}

body {
  background-color: var(--secondary-color);
  color: var(--text-color);
  font-family: var(--font-display);
  overflow-x: hidden;
  cursor: none;
  padding-top: 60px;
}

/* ===== CUSTOM CURSOR ===== */
.cursor {
  width: 12px;
  height: 12px;
  background: var(--primary-color);
  border-radius: 50%;
  position: fixed;
  pointer-events: none;
  z-index: 9999;
  transition: transform 0.15s ease;
  transform: translate(-50%, -50%);
}

.cursor-follower {
  width: 36px;
  height: 36px;
  border: 1.5px solid var(--primary-color);
  border-radius: 50%;
  position: fixed;
  pointer-events: none;
  z-index: 9998;
  transition: all 0.25s ease;
  transform: translate(-50%, -50%);
  opacity: 0.5;
}

@media (max-width: 768px) {
  body { 
    cursor: auto; 
  }
  
.cursor, .cursor-follower { 
  display: none; 
  }
}

/* ===== PAGE HERO ===== */
.page-hero {
  background: var(--surface2);
  padding: 40px 24px 45px;
  border-bottom: 1px solid var(--border);
}

.page-hero-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.back-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--muted);
  text-decoration: none;
  margin-bottom: 32px;
  transition: color 0.2s ease, gap 0.2s ease;
}

.back-btn:hover {
  color: var(--primary-color);
  gap: 12px;
}

.page-hero-title {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 16px;
}

.page-hero-sub {
  color: var(--muted);
  font-size: 1rem;
  max-width: 500px;
  line-height: 1.7;
  margin-bottom: 40px;
}

/* ===== FILTER TABS ===== */
.filter-tabs {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 10px 22px;
  border-radius: 50px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.25s ease;
  -webkit-tap-highlight-color: transparent;
}

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

.filter-btn.active {
  background: var(--primary-color);
  color: var(--secondary-color);
  border-color: var(--primary-color);
}

/* ===== SECTIONS ===== */
.section {
  padding: 100px 24px;
}

.section-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.section-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--primary-color);
  text-transform: uppercase;
  letter-spacing: 3px;
  margin-bottom: 12px;
}

/* ===== PROJECTS ===== */
.projects-section { background: var(--surface2); }

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

.project-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.project-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 50px rgba(0,0,0,0.4);
  border-color: rgba(16,185,129,0.3);
}

.project-img {
  height: auto;
  object-fit: cover;
  width: 100%;
}

.project-img.web { background: linear-gradient(135deg, #0f2027, #203a43, #2c5364); color: var(--primary-color); }
.project-img.data { background: linear-gradient(135deg, #1a1a2e, #16213e, #0f3460); color: #60a5fa; }
.project-img.python { background: linear-gradient(135deg, #1e3c72, #2a5298); color: #fbbf24; }

.project-body { padding: 24px; }

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 14px;
}

.project-tags span {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 4px 10px;
  border-radius: 20px;
  background: rgba(16,185,129,0.1);
  color: var(--primary-color);
  border: 1px solid rgba(16,185,129,0.2);
}

.project-body h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.project-body p {
  font-size: 0.88rem;
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: 20px;
}

.project-links { display: flex; gap: 10px; flex-wrap: wrap; }

.link-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s ease;
  border: 1px solid var(--border);
  color: var(--muted);
}

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

.link-btn.primary:hover { transform: translateY(-2px); box-shadow: 0 6px 20px var(--glow); color: var(--secondary-color); }

/* ===== FOOTER ===== */
.footer {
  background: var(--surface2);
  border-top: 1px solid var(--border);
  padding: 40px 24px;
  text-align: center;
}
.footer-inner { max-width: 1200px; margin: 0 auto; }

.footer-logo {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 10px;
}

.footer-text {
  font-size: 0.9rem;
  color: var(--muted);
  margin-bottom: 6px;
}

.footer-copy {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: rgba(148,163,184,0.5);
}

/* ===== ANIMATIONS ===== */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; transform: scale(0.9); }
  to { opacity: 1; transform: scale(1); }
}
@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ===== ALL PROJECTS SECTION ===== */
.all-projects-section {
  background: var(--secondary-color);
}

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

/* Hidden state for filter */
.project-card.hidden {
  display: none;
}

/* ===== RESPONSIVE ===== */

/* ===== LAPTOP MOYEN (1100px) ===== */
@media (max-width: 1100px) {
  .projects-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ===== TABLETTE (900px) ===== */
@media (max-width: 900px) {
  .projects-grid { grid-template-columns: 1fr; }
}

/* ===== MOBILE (640px) ===== */
@media (max-width: 640px) {
  .section { padding: 70px 20px; }

  /* Projects */
  .projects-grid { grid-template-columns: 1fr; }

  /* Filter tabs */
  .filter-tabs { gap: 8px; }
  .filter-btn { padding: 8px 14px; font-size: 0.75rem; }

  /* Page hero */
  .page-hero { padding: 40px 20px; }
  .all-projects-grid { grid-template-columns: 1fr; }

  /* Footer */
  .footer { padding: 30px 20px; }
}