/* ============================================
   Flamingo — Skills / Compétences (SaaS UI)
   ============================================ */

.skills-page {
  --sk-bg: #0a0a0a;
  --sk-accent: #3b82f6;
  --sk-cyan: #22d3ee;
  --sk-neon: #60a5fa;
  --sk-glow: rgba(59, 130, 246, 0.4);
  --sk-card-bg: rgba(255, 255, 255, 0.03);
  --sk-border: rgba(255, 255, 255, 0.08);
  --sk-radius: 18px;
}

.skills-page {
  background: var(--sk-bg);
}

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

/* --- Hero --- */
.sk-hero {
  position: relative;
  padding: calc(var(--header-height) + 80px) 0 72px;
  text-align: center;
  overflow: hidden;
}

.sk-hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.sk-hero-glow {
  position: absolute;
  top: -30%;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 520px;
  background: radial-gradient(ellipse, rgba(34, 211, 238, 0.12) 0%, rgba(59, 130, 246, 0.08) 40%, transparent 70%);
}

.sk-hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse at 50% 30%, black 15%, transparent 72%);
}

.sk-hero-content {
  position: relative;
  z-index: 1;
  max-width: 720px;
  margin: 0 auto;
}

.sk-hero .breadcrumb {
  justify-content: center;
  margin-bottom: 28px;
}

.sk-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  margin-bottom: 24px;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--sk-cyan);
  background: rgba(34, 211, 238, 0.08);
  border: 1px solid rgba(34, 211, 238, 0.22);
  border-radius: 50px;
}

.sk-title {
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 5.5vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.1;
  margin-bottom: 20px;
}

.sk-title-gradient {
  background: linear-gradient(135deg, #fff 0%, var(--sk-cyan) 45%, var(--sk-neon) 100%);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: skGradientShift 7s ease infinite;
}

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

.sk-subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  line-height: 1.75;
  max-width: 540px;
  margin: 0 auto;
}

/* --- Skills grid section --- */
.sk-competences {
  padding: 40px 0 100px;
  position: relative;
}

.sk-comp-grid {
  display: grid;
  gap: 28px;
  grid-template-columns: 1fr;
}

/* --- Reusable card component --- */
.sk-card {
  position: relative;
  border-radius: var(--sk-radius);
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1),
              box-shadow 0.4s ease;
}

/* Gradient border wrapper */
.sk-card-border {
  position: absolute;
  inset: 0;
  border-radius: calc(var(--sk-radius) + 1px);
  padding: 1px;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.35), rgba(34, 211, 238, 0.15), rgba(255, 255, 255, 0.06));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0.7;
  transition: opacity 0.4s ease, background 0.4s ease;
  pointer-events: none;
}

.sk-card:hover .sk-card-border {
  opacity: 1;
  background: linear-gradient(135deg, var(--sk-accent), var(--sk-cyan), var(--sk-neon));
}

.sk-card-inner {
  position: relative;
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 32px 28px 28px;
  background: var(--sk-card-bg);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-radius: var(--sk-radius);
  border: 1px solid var(--sk-border);
  overflow: hidden;
  transition: border-color 0.4s ease, background 0.4s ease;
}

.sk-card-inner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(34, 211, 238, 0.5), transparent);
  opacity: 0;
  transition: opacity 0.4s ease;
}

.sk-card:hover {
  transform: translateY(-8px) scale(1.015);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45), 0 0 48px rgba(59, 130, 246, 0.12);
}

.sk-card:hover .sk-card-inner {
  border-color: rgba(59, 130, 246, 0.3);
  background: rgba(255, 255, 255, 0.045);
}

.sk-card:hover .sk-card-inner::before {
  opacity: 1;
}

/* Badge / tag */
.sk-card-badge {
  align-self: flex-start;
  padding: 5px 12px;
  margin-bottom: 22px;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--sk-cyan);
  background: rgba(34, 211, 238, 0.1);
  border: 1px solid rgba(34, 211, 238, 0.2);
  border-radius: 50px;
}

/* Animated icon */
.sk-card-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.15), rgba(34, 211, 238, 0.08));
  border: 1px solid rgba(59, 130, 246, 0.25);
  border-radius: 16px;
  color: var(--sk-neon);
  transition: transform 0.4s ease, box-shadow 0.4s ease, color 0.4s ease;
}

.sk-card-icon svg {
  width: 28px;
  height: 28px;
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.sk-card:hover .sk-card-icon {
  transform: scale(1.05);
  box-shadow: 0 0 28px rgba(34, 211, 238, 0.25);
  color: var(--sk-cyan);
}

.sk-card:hover .sk-card-icon svg {
  transform: scale(1.1) rotate(-4deg);
  animation: skIconPulse 2s ease-in-out infinite;
}

@keyframes skIconPulse {
  0%, 100% { filter: drop-shadow(0 0 0 transparent); }
  50% { filter: drop-shadow(0 0 8px rgba(34, 211, 238, 0.5)); }
}

.sk-card h3 {
  font-family: var(--font-display);
  font-size: 1.3125rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.3;
  margin-bottom: 10px;
}

.sk-card-tags {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--sk-neon);
  margin-bottom: 20px;
  letter-spacing: 0.01em;
}

.sk-card-list {
  flex: 1;
  margin-bottom: 8px;
}

.sk-card-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.55;
  margin-bottom: 12px;
}

.sk-card-list li::before {
  content: '';
  width: 6px;
  height: 6px;
  margin-top: 8px;
  flex-shrink: 0;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--sk-accent), var(--sk-cyan));
  box-shadow: 0 0 8px rgba(34, 211, 238, 0.4);
}

/* Per-card accent variants */
.sk-card[data-accent="blue"] .sk-card-badge { color: #60a5fa; background: rgba(96, 165, 250, 0.1); border-color: rgba(96, 165, 250, 0.25); }
.sk-card[data-accent="cyan"] .sk-card-badge { color: #22d3ee; background: rgba(34, 211, 238, 0.1); border-color: rgba(34, 211, 238, 0.25); }
.sk-card[data-accent="violet"] .sk-card-badge { color: #a78bfa; background: rgba(167, 139, 250, 0.1); border-color: rgba(167, 139, 250, 0.25); }
.sk-card[data-accent="emerald"] .sk-card-badge { color: #34d399; background: rgba(52, 211, 153, 0.1); border-color: rgba(52, 211, 153, 0.25); }
.sk-card[data-accent="amber"] .sk-card-badge { color: #fbbf24; background: rgba(251, 191, 36, 0.1); border-color: rgba(251, 191, 36, 0.25); }
.sk-card[data-accent="rose"] .sk-card-badge { color: #fb7185; background: rgba(251, 113, 133, 0.1); border-color: rgba(251, 113, 133, 0.25); }

/* --- Stack technique détaillé --- */
.sk-stack {
  padding: 40px 0 100px;
  background: var(--bg-secondary);
  border-top: 1px solid var(--sk-border);
}

.sk-stack-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 56px;
}

.sk-stack-header h2 {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 14px;
}

.sk-stack-header p {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.7;
}

.sk-stack-grid {
  display: grid;
  gap: 24px;
  grid-template-columns: 1fr;
}

.sk-stack-cat-inner {
  height: 100%;
  padding: 28px 26px;
  background: var(--sk-card-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--sk-border);
  border-radius: var(--sk-radius);
  transition: transform 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
}

.sk-stack-cat:hover .sk-stack-cat-inner {
  transform: translateY(-4px);
  border-color: rgba(59, 130, 246, 0.3);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.25), 0 0 32px rgba(59, 130, 246, 0.08);
}

.sk-stack-cat-head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--sk-border);
}

.sk-stack-cat-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.375rem;
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: 12px;
  flex-shrink: 0;
}

.sk-stack-cat h3 {
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.35;
}

.sk-stack-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.sk-stack-tags span {
  padding: 7px 14px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--sk-neon);
  background: rgba(59, 130, 246, 0.08);
  border: 1px solid rgba(59, 130, 246, 0.18);
  border-radius: 50px;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
}

.sk-stack-tags span:hover {
  transform: translateY(-2px);
  background: rgba(59, 130, 246, 0.14);
  box-shadow: 0 4px 14px rgba(59, 130, 246, 0.15);
}

/* Accent variants — stack categories */
.sk-stack-cat[data-accent="blue"] .sk-stack-cat-icon { background: rgba(96, 165, 250, 0.12); border-color: rgba(96, 165, 250, 0.25); }
.sk-stack-cat[data-accent="blue"] .sk-stack-tags span { color: #60a5fa; border-color: rgba(96, 165, 250, 0.22); background: rgba(96, 165, 250, 0.08); }

.sk-stack-cat[data-accent="violet"] .sk-stack-cat-icon { background: rgba(167, 139, 250, 0.12); border-color: rgba(167, 139, 250, 0.25); }
.sk-stack-cat[data-accent="violet"] .sk-stack-tags span { color: #a78bfa; border-color: rgba(167, 139, 250, 0.22); background: rgba(167, 139, 250, 0.08); }

.sk-stack-cat[data-accent="cyan"] .sk-stack-cat-icon { background: rgba(34, 211, 238, 0.12); border-color: rgba(34, 211, 238, 0.25); }
.sk-stack-cat[data-accent="cyan"] .sk-stack-tags span { color: #22d3ee; border-color: rgba(34, 211, 238, 0.22); background: rgba(34, 211, 238, 0.08); }

.sk-stack-cat[data-accent="amber"] .sk-stack-cat-icon { background: rgba(251, 191, 36, 0.12); border-color: rgba(251, 191, 36, 0.25); }
.sk-stack-cat[data-accent="amber"] .sk-stack-tags span { color: #fbbf24; border-color: rgba(251, 191, 36, 0.22); background: rgba(251, 191, 36, 0.08); }

.sk-stack-cat[data-accent="rose"] .sk-stack-cat-icon { background: rgba(251, 113, 133, 0.12); border-color: rgba(251, 113, 133, 0.25); }
.sk-stack-cat[data-accent="rose"] .sk-stack-tags span { color: #fb7185; border-color: rgba(251, 113, 133, 0.22); background: rgba(251, 113, 133, 0.08); }

.sk-stack-cat[data-accent="emerald"] .sk-stack-cat-icon { background: rgba(52, 211, 153, 0.12); border-color: rgba(52, 211, 153, 0.25); }
.sk-stack-cat[data-accent="emerald"] .sk-stack-tags span { color: #34d399; border-color: rgba(52, 211, 153, 0.22); background: rgba(52, 211, 153, 0.08); }

.sk-stack-cat[data-accent="indigo"] .sk-stack-cat-icon { background: rgba(129, 140, 248, 0.12); border-color: rgba(129, 140, 248, 0.25); }
.sk-stack-cat[data-accent="indigo"] .sk-stack-tags span { color: #818cf8; border-color: rgba(129, 140, 248, 0.22); background: rgba(129, 140, 248, 0.08); }

.sk-stack-cat[data-accent="pink"] .sk-stack-cat-icon { background: rgba(236, 72, 153, 0.12); border-color: rgba(236, 72, 153, 0.25); }
.sk-stack-cat[data-accent="pink"] .sk-stack-tags span { color: #f472b6; border-color: rgba(236, 72, 153, 0.22); background: rgba(236, 72, 153, 0.08); }

.sk-stack-grid .sk-stack-cat.sk-reveal:nth-child(1) { transition-delay: 0ms; }
.sk-stack-grid .sk-stack-cat.sk-reveal:nth-child(2) { transition-delay: 60ms; }
.sk-stack-grid .sk-stack-cat.sk-reveal:nth-child(3) { transition-delay: 120ms; }
.sk-stack-grid .sk-stack-cat.sk-reveal:nth-child(4) { transition-delay: 180ms; }
.sk-stack-grid .sk-stack-cat.sk-reveal:nth-child(5) { transition-delay: 240ms; }
.sk-stack-grid .sk-stack-cat.sk-reveal:nth-child(6) { transition-delay: 300ms; }
.sk-stack-grid .sk-stack-cat.sk-reveal:nth-child(7) { transition-delay: 360ms; }
.sk-stack-grid .sk-stack-cat.sk-reveal:nth-child(8) { transition-delay: 420ms; }
.sk-stack-grid .sk-stack-cat.sk-reveal:nth-child(9) { transition-delay: 480ms; }
.sk-stack-grid .sk-stack-cat.sk-reveal:nth-child(10) { transition-delay: 540ms; }

/* --- CTA --- */
.sk-cta {
  padding: 0 0 120px;
  text-align: center;
}

.sk-cta-inner {
  max-width: 640px;
  margin: 0 auto;
  padding: 48px 40px;
  background: var(--sk-card-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--sk-border);
  border-radius: 24px;
  position: relative;
  overflow: hidden;
}

.sk-cta-inner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at top, rgba(59, 130, 246, 0.12), transparent 65%);
  pointer-events: none;
}

.sk-cta-inner > * {
  position: relative;
  z-index: 1;
}

.sk-cta p {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: 28px;
}

.sk-cta .btn {
  min-width: 220px;
}

/* --- Scroll reveal --- */
.sk-reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.75s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.75s cubic-bezier(0.4, 0, 0.2, 1);
}

.sk-reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.sk-comp-grid .sk-card.sk-reveal:nth-child(1) { transition-delay: 0ms; }
.sk-comp-grid .sk-card.sk-reveal:nth-child(2) { transition-delay: 80ms; }
.sk-comp-grid .sk-card.sk-reveal:nth-child(3) { transition-delay: 160ms; }
.sk-comp-grid .sk-card.sk-reveal:nth-child(4) { transition-delay: 240ms; }
.sk-comp-grid .sk-card.sk-reveal:nth-child(5) { transition-delay: 320ms; }

/* --- Light mode --- */
[data-theme="light"] .skills-page {
  --sk-bg: #f8f9fc;
  --sk-card-bg: rgba(255, 255, 255, 0.92);
  --sk-border: rgba(0, 0, 0, 0.09);
}

[data-theme="light"] .sk-title-gradient {
  background: linear-gradient(135deg, #0a0a0f 0%, #0891b2 45%, #2563eb 100%);
  background-size: 200% auto;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

[data-theme="light"] .sk-card:hover {
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.1), 0 0 36px rgba(59, 130, 246, 0.1);
}

[data-theme="light"] .sk-card:hover .sk-card-inner {
  background: rgba(255, 255, 255, 0.98);
}

[data-theme="light"] .sk-card-tags {
  color: #2563eb;
}

[data-theme="light"] .sk-stack {
  background: var(--bg-tertiary);
}

[data-theme="light"] .sk-stack-cat:hover .sk-stack-cat-inner {
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.08), 0 0 24px rgba(37, 99, 235, 0.08);
}

[data-theme="light"] .sk-stack-cat[data-accent="blue"] .sk-stack-tags span { color: #2563eb; }
[data-theme="light"] .sk-stack-cat[data-accent="violet"] .sk-stack-tags span { color: #7c3aed; }
[data-theme="light"] .sk-stack-cat[data-accent="cyan"] .sk-stack-tags span { color: #0891b2; }
[data-theme="light"] .sk-stack-cat[data-accent="amber"] .sk-stack-tags span { color: #d97706; }
[data-theme="light"] .sk-stack-cat[data-accent="rose"] .sk-stack-tags span { color: #e11d48; }
[data-theme="light"] .sk-stack-cat[data-accent="emerald"] .sk-stack-tags span { color: #059669; }
[data-theme="light"] .sk-stack-cat[data-accent="indigo"] .sk-stack-tags span { color: #4f46e5; }
[data-theme="light"] .sk-stack-cat[data-accent="pink"] .sk-stack-tags span { color: #db2777; }

/* --- Responsive grid: 1 → 2 → 3 columns --- */
@media (min-width: 768px) {
  .sk-comp-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .sk-stack-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1100px) {
  .sk-comp-grid {
    grid-template-columns: repeat(6, 1fr);
  }

  .sk-card {
    grid-column: span 2;
  }

  .sk-card:nth-child(4) {
    grid-column: 2 / span 2;
  }

  .sk-card:nth-child(5) {
    grid-column: 4 / span 2;
  }

  .sk-stack-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1280px) {
  .sk-stack-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 767px) {
  .sk-hero {
    padding: calc(var(--header-height) + 56px) 0 48px;
  }

  .sk-competences {
    padding: 24px 0 48px;
  }

  .sk-stack {
    padding: 48px 0 72px;
  }

  .sk-stack-cat-inner {
    padding: 22px 20px;
  }

  .sk-card-inner {
    padding: 26px 22px 22px;
  }

  .sk-cta-inner {
    padding: 36px 24px;
  }
}