@font-face {
  font-family: 'Geist';
  src: url('../fonts/Geist-LatinExt-300.woff2') format('woff2');
  font-weight: 300 600;
  font-display: swap;
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

@font-face {
  font-family: 'Geist';
  src: url('../fonts/Geist-Latin-300.woff2') format('woff2');
  font-weight: 300 600;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: 'Geist Mono';
  src: url('../fonts/GeistMono-LatinExt.woff2') format('woff2');
  font-weight: 400;
  font-display: swap;
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

@font-face {
  font-family: 'Geist Mono';
  src: url('../fonts/GeistMono-Latin.woff2') format('woff2');
  font-weight: 400;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* ─── Design System: CSS Custom Properties ─── */
:root {
  --font-sans: 'Geist', system-ui, -apple-system, sans-serif;
  --font-mono: 'Geist Mono', 'SF Mono', monospace;
}

body {
  font-family: var(--font-sans);
  background-color: #000000;
  color: #ffffff;
}

html { scroll-behavior: smooth; }

/* Fix horizontal scroll on mobile */
html, body {
  overflow-x: hidden;
  max-width: 100vw;
}

/* Design System: Custom Scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: #000; }
::-webkit-scrollbar-thumb { background: #333; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #555; }

/* Design System: Animations */
.fade-in-up { animation: fadeInUp 1s cubic-bezier(0.16, 1, 0.3, 1) forwards; opacity: 0; transform: translateY(20px); }
.delay-100 { animation-delay: 100ms; }
.delay-200 { animation-delay: 200ms; }
.delay-300 { animation-delay: 300ms; }
.delay-500 { animation-delay: 500ms; }

@keyframes fadeInUp {
  to { opacity: 1; transform: translateY(0); }
}

/* Design System: Glass Effects */
.glass-panel {
  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.glass-nav {
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

/* Design System: Typing Cursor */
.typing-cursor {
  display: inline-block;
  width: 2px;
  height: 1.2em;
  background-color: #0ea5e9;
  margin-left: 2px;
  vertical-align: middle;
  animation: blink 1s step-end infinite;
}
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }

/* Design System: Gradient Text */
.text-gradient {
  background: linear-gradient(to bottom, #ffffff, #a1a1aa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Design System: Glow Point */
.glow-point {
  position: absolute;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(14, 165, 233, 0.15) 0%, rgba(0,0,0,0) 70%);
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
}

/* Design System: Border Gradient */
[style*="--border-gradient"]::before {
  content: "";
  position: absolute;
  inset: 0;
  padding: 1px;
  border-radius: var(--border-radius-before, inherit);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  background: var(--border-gradient);
  pointer-events: none;
}

/* Design System: Float animation */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* Design System: Bar chart animations */
@keyframes bar1 { 0%, 100% { height: 40% } 50% { height: 70% } }
@keyframes bar2 { 0%, 100% { height: 60% } 50% { height: 30% } }
@keyframes bar3 { 0%, 100% { height: 30% } 50% { height: 60% } }
@keyframes bar4 { 0%, 100% { height: 80% } 50% { height: 40% } }
@keyframes bar5 { 0%, 100% { height: 100% } 50% { height: 60% } }

/* Design System: subtle-glow (integration icons) */
@keyframes subtle-glow {
  0%, 100% { opacity: 0.4; transform: scale(0.97); }
  50% { opacity: 1; transform: scale(1.02); }
}

/* ─── Layout helper: scroll-offset para anchors com nav fixa ─── */
section[id], div[id] {
  scroll-margin-top: 64px;
}

/* ─── FAQ accordion ─── */
details > summary { list-style: none; cursor: pointer; }
details > summary::-webkit-details-marker { display: none; }
details[open] .faq-icon-plus { display: none; }
details:not([open]) .faq-icon-minus { display: none; }

@media (max-width: 768px) {
  .glass-panel {
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .fade-in-up { animation: none; opacity: 1; transform: none; }
  [style*="subtle-glow"] { animation: none !important; opacity: 1; }
  .animate-ping { animation: none; }
}