/* Core 3D Theme & Typography for LED Sign Studio Multi-Page Website */
@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,400..700;1,9..40,400..700&family=Space+Grotesk:wght@400;500;600;700&display=swap');

:root {
  --bg: #080b10;
  --bg-card: #0d1219;
  --panel: #10151d;
  --panel2: #151c26;
  --panel-border: rgba(255, 255, 255, 0.09);
  --text: #f4f7fb;
  --text-muted: #9ba7b7;
  --text-dim: #64748b;
  --lime: #c8ff4d;
  --cyan: #57e7ff;
  --blue: #2563eb;
  --gold: #f59e0b;
  --line: rgba(255, 255, 255, 0.11);
  --radius: 20px;
  --max: 1240px;
  --transition: 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'DM Sans', sans-serif;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition);
}

img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

button, input, select, textarea {
  font: inherit;
  color: inherit;
}

.wrap {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Space Grotesk', sans-serif;
  line-height: 1.1;
  letter-spacing: -0.04em;
  color: var(--text);
}

h1 { font-size: clamp(2.4rem, 5vw, 4.4rem); }
h2 { font-size: clamp(1.9rem, 3.8vw, 3.2rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.6rem); }
h4 { font-size: 1.15rem; }

p {
  color: var(--text-muted);
  font-size: 0.98rem;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--lime);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.eyebrow::before {
  content: '';
  width: 22px;
  height: 2px;
  background: currentColor;
}

/* 3D Lighting & Shaders */
.glow-lime {
  text-shadow: 0 0 25px rgba(200, 255, 77, 0.4);
}

.glow-cyan {
  text-shadow: 0 0 25px rgba(87, 231, 255, 0.4);
}

.glow-box {
  box-shadow: 0 10px 40px -10px rgba(0, 0, 0, 0.7), 0 0 25px rgba(87, 231, 255, 0.08);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 700;
  font-size: 0.92rem;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--lime);
  color: #0b1106;
  box-shadow: 0 6px 25px rgba(200, 255, 77, 0.22);
}

.btn-primary:hover {
  background: #d7ff73;
  transform: translateY(-2px);
  box-shadow: 0 12px 35px rgba(200, 255, 77, 0.35);
}

.btn-cyan {
  background: var(--cyan);
  color: #07131b;
  box-shadow: 0 6px 25px rgba(87, 231, 255, 0.25);
}

.btn-cyan:hover {
  background: #7eedff;
  transform: translateY(-2px);
  box-shadow: 0 12px 35px rgba(87, 231, 255, 0.4);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--line);
  color: var(--text);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--lime);
  color: var(--lime);
  transform: translateY(-2px);
}

/* Sections */
.section {
  padding: 95px 0;
  position: relative;
}

.section-alt {
  background: linear-gradient(180deg, #090e15 0%, #06090e 100%);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 30px;
  margin-bottom: 48px;
}

.section-head-center {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 52px;
}

.section-head p {
  max-width: 480px;
  margin: 0;
}

/* Scroll reveal animations */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.65s cubic-bezier(0.16, 1, 0.3, 1), transform 0.65s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.visible {
  opacity: 1;
  transform: none;
}

@media (max-width: 768px) {
  .section { padding: 65px 0; }
  .section-head { flex-direction: column; align-items: flex-start; gap: 15px; margin-bottom: 35px; }
  .wrap { width: calc(100% - 30px); }
}