/* =============================================
   MECASIMETRA — Intelligence Systems
   Design: Dark tech / kappology-influenced
   ============================================= */

:root {
  --bg-primary: #04040a;
  --bg-secondary: #090a14;
  --bg-card: rgba(255, 255, 255, 0.03);
  --accent: #f700ff;
  --accent-dim: rgba(247, 0, 255, 0.15);
  --accent-glow: rgba(247, 0, 255, 0.45);
  --accent-2: #00e8ff;
  --text-primary: #e8eaf0;
  --text-secondary: #7a8099;
  --text-muted: #3d4260;
  --border: rgba(255, 255, 255, 0.06);
  --border-accent: rgba(247, 0, 255, 0.35);
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --radius: 12px;
  --radius-sm: 6px;
}

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

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

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

/* ── SCROLLBAR ─────────────────────────────── */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--accent-dim); border-radius: 2px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

/* ── CANVAS ────────────────────────────────── */
#canvas-bg {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  z-index: 0;
  pointer-events: none;
  opacity: 0.4;
}

/* ── LAYOUT ────────────────────────────────── */
.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 2rem;
}

section {
  position: relative;
  z-index: 1;
  padding: 6rem 0;
}

/* ── GRID OVERLAY ──────────────────────────── */
.grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
}

/* ── NAVIGATION ────────────────────────────── */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 1.2rem 0;
  transition: background var(--transition), border-color var(--transition), backdrop-filter var(--transition);
}

nav.scrolled {
  background: rgba(7, 8, 13, 0.9);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(20px);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 2rem;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

.nav-logo-mark {
  width: 36px;
  height: 36px;
  border: 1.5px solid var(--accent);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
  font-weight: 700;
  letter-spacing: -0.5px;
  box-shadow: 0 0 12px var(--accent-dim), inset 0 0 12px var(--accent-dim);
}

.nav-logo-text {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.5rem;
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: color var(--transition);
}

.nav-links a:hover {
  color: var(--accent);
}

.nav-cta {
  padding: 0.55rem 1.25rem;
  border: 1px solid var(--accent);
  border-radius: var(--radius-sm);
  color: var(--accent) !important;
  transition: background var(--transition), box-shadow var(--transition) !important;
}

.nav-cta:hover {
  background: var(--accent-dim);
  box-shadow: 0 0 20px var(--accent-glow);
  color: var(--accent) !important;
}

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 0.25rem;
}

.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-secondary);
  border-radius: 2px;
  transition: var(--transition);
}

/* ── HERO ──────────────────────────────────── */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 0;
  overflow: hidden;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  padding: 8rem 2rem 6rem;
  max-width: 1140px;
  margin: 0 auto;
  width: 100%;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  padding: 0.4rem 0.9rem;
  border: 1px solid var(--border-accent);
  border-radius: 100px;
  background: var(--accent-dim);
}

.hero-tag::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

.hero-heading {
  font-size: clamp(2.6rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
}

.hero-heading .accent { color: var(--accent); }
.hero-heading .line2 {
  display: block;
  background: linear-gradient(135deg, var(--text-primary) 30%, var(--text-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 2.5rem;
  max-width: 520px;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 1.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--accent);
  color: #07080d;
  box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-primary:hover {
  background: #ff4dff;
  box-shadow: 0 8px 32px var(--accent-glow);
  transform: translateY(-1px);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  border-color: var(--border-accent);
  color: var(--accent);
  background: var(--accent-dim);
}

.hero-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-orb {
  width: 380px;
  height: 380px;
  border-radius: 50%;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-orb::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: radial-gradient(circle at 40% 40%,
    rgba(247, 0, 255, 0.12) 0%,
    rgba(0, 232, 255, 0.06) 50%,
    transparent 70%);
  border: 1px solid rgba(247, 0, 255, 0.15);
  animation: orb-rotate 20s linear infinite;
}

.hero-orb::after {
  content: '';
  position: absolute;
  inset: 20px;
  border-radius: 50%;
  border: 1px dashed rgba(247, 0, 255, 0.1);
  animation: orb-rotate 30s linear infinite reverse;
}

@keyframes orb-rotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.hero-orb-core {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: radial-gradient(circle at center,
    rgba(247, 0, 255, 0.2) 0%,
    rgba(0, 232, 255, 0.1) 50%,
    transparent 70%);
  border: 1px solid rgba(247, 0, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--accent);
  text-shadow: 0 0 20px var(--accent-glow);
  letter-spacing: -1px;
  z-index: 1;
}

.hero-stats {
  position: absolute;
  bottom: -1rem;
  left: 0; right: 0;
  display: flex;
  justify-content: center;
  gap: 2.5rem;
}

.hero-stat {
  text-align: center;
}

.hero-stat-value {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1;
}

.hero-stat-value span { color: var(--accent); }

.hero-stat-label {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-top: 0.2rem;
}

.hero-floating-card {
  position: absolute;
  background: rgba(13, 15, 24, 0.85);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.9rem 1.1rem;
  backdrop-filter: blur(12px);
  font-size: 0.78rem;
  white-space: nowrap;
  animation: float 4s ease-in-out infinite;
}

.hero-floating-card.card-1 {
  top: 15%;
  right: -20px;
  animation-delay: 0s;
}

.hero-floating-card.card-2 {
  bottom: 25%;
  left: -30px;
  animation-delay: 2s;
}

.hero-floating-card .fc-label {
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.2rem;
}

.hero-floating-card .fc-value {
  color: var(--accent);
  font-weight: 700;
  font-family: var(--font-mono);
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* ── SECTION HEADERS ───────────────────────── */
.section-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.section-sub {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.75;
  max-width: 600px;
}

/* ── ABOUT ─────────────────────────────────── */
#about {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
}

.about-content p {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 1.25rem;
  font-size: 0.97rem;
}

.about-content p strong {
  color: var(--text-primary);
}

.about-values {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 2rem;
}

.value-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  transition: border-color var(--transition), transform var(--transition);
}

.value-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-2px);
}

.value-icon {
  font-size: 1.4rem;
  margin-bottom: 0.5rem;
}

.value-title {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.value-desc {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.about-terminal {
  background: rgba(7, 8, 13, 0.9);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  font-family: var(--font-mono);
}

.terminal-bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  background: rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid var(--border);
}

.terminal-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
}

.terminal-dot.red { background: #ff5f57; }
.terminal-dot.yellow { background: #febc2e; }
.terminal-dot.green { background: #28c840; }

.terminal-title {
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-left: 0.5rem;
  letter-spacing: 0.05em;
}

.terminal-body {
  padding: 1.5rem;
  font-size: 0.82rem;
  line-height: 2;
}

.t-line { display: flex; gap: 0.75rem; align-items: flex-start; }
.t-prompt { color: var(--accent); user-select: none; }
.t-cmd { color: var(--text-secondary); }
.t-output { color: var(--text-muted); padding-left: 1.5rem; }
.t-output .highlight { color: var(--accent); }
.t-cursor {
  display: inline-block;
  width: 8px; height: 15px;
  background: var(--accent);
  vertical-align: text-bottom;
  animation: blink 1.2s step-end infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

/* ── SKILLS ────────────────────────────────── */
#skills {
  padding: 6rem 0;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 3.5rem;
}

.skill-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
  position: relative;
  overflow: hidden;
}

.skill-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}

.skill-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(247, 0, 255, 0.08);
}

.skill-card:hover::before { opacity: 1; }

.skill-icon {
  width: 44px; height: 44px;
  border-radius: 10px;
  background: var(--accent-dim);
  border: 1px solid var(--border-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  margin-bottom: 1.2rem;
}

.skill-name {
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.skill-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 1.25rem;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.tag {
  font-size: 0.68rem;
  font-family: var(--font-mono);
  padding: 0.2rem 0.55rem;
  border-radius: 4px;
  border: 1px solid var(--border);
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.02);
  transition: var(--transition);
}

.skill-card:hover .tag {
  border-color: rgba(247, 0, 255, 0.2);
  color: var(--text-secondary);
}

/* ── SERVICES ──────────────────────────────── */
#services {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  margin-top: 3.5rem;
}

.service-card {
  background: rgba(7, 8, 13, 0.5);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  display: flex;
  gap: 1.5rem;
}

.service-card:hover {
  border-color: var(--border-accent);
  box-shadow: 0 0 40px rgba(247, 0, 255, 0.05);
}

.service-num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 0.1em;
  white-space: nowrap;
  padding-top: 0.2rem;
}

.service-content { flex: 1; }

.service-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.6rem;
}

.service-desc {
  font-size: 0.84rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 1rem;
}

.service-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.service-list li {
  font-size: 0.78rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.service-list li::before {
  content: '→';
  color: var(--accent);
  font-size: 0.7rem;
}

/* ── PROJECTS ──────────────────────────────── */
#projects {
  padding: 6rem 0;
}

.projects-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 3.5rem;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(247, 0, 255, 0.07);
}

.project-thumb {
  height: 160px;
  background: var(--bg-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.project-thumb-inner {
  font-family: var(--font-mono);
  font-size: 2.5rem;
  opacity: 0.3;
}

.project-thumb::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at center, var(--accent-dim) 0%, transparent 70%);
  opacity: 0;
  transition: opacity var(--transition);
}

.project-card:hover .project-thumb::after { opacity: 1; }

.project-body {
  padding: 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.project-cat {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 0.5rem;
}

.project-title {
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.6rem;
}

.project-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.65;
  flex: 1;
  margin-bottom: 1.25rem;
}

.project-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

/* ── CONTACT ───────────────────────────────── */
#contact {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: start;
}

.contact-info {
  padding-top: 0.5rem;
}

.contact-info .section-sub {
  margin-bottom: 2.5rem;
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.contact-method {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-decoration: none;
  transition: border-color var(--transition), transform var(--transition);
}

.contact-method:hover {
  border-color: var(--border-accent);
  transform: translateX(4px);
}

.contact-method-icon {
  font-size: 1.2rem;
  width: 38px; height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-dim);
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.contact-method-label {
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-family: var(--font-mono);
}

.contact-method-value {
  font-size: 0.88rem;
  color: var(--text-primary);
  font-weight: 500;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-group label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-family: var(--font-mono);
}

.form-group input,
.form-group textarea,
.form-group select {
  background: rgba(7, 8, 13, 0.6);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.8rem 1rem;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.88rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  width: 100%;
  outline: none;
  -webkit-appearance: none;
}

.form-group select {
  cursor: pointer;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--border-accent);
  box-shadow: 0 0 0 3px rgba(247, 0, 255, 0.06);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}

.form-submit {
  margin-top: 0.5rem;
}

.form-note {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

/* ── FOOTER ────────────────────────────────── */
footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  position: relative;
  z-index: 1;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 2rem;
}

.footer-copy {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.footer-copy span {
  color: var(--accent);
}

.footer-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.footer-links a {
  font-size: 0.78rem;
  color: var(--text-muted);
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  transition: color var(--transition);
}

.footer-links a:hover {
  color: var(--accent);
}

/* ── REVEAL ANIMATIONS ─────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }

/* ── MOBILE NAV ────────────────────────────── */
@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(7, 8, 13, 0.97);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2.5rem;
    z-index: 99;
    backdrop-filter: blur(20px);
  }

  .nav-links.open { display: flex; }
  .nav-links a { font-size: 1.1rem; }
  .nav-hamburger { display: flex; z-index: 101; }
  .nav-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-hamburger.open span:nth-child(2) { opacity: 0; }
  .nav-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .hero-inner { grid-template-columns: 1fr; gap: 3rem; padding: 7rem 2rem 4rem; }
  .hero-visual { display: none; }

  .about-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .skills-grid { grid-template-columns: 1fr 1fr; }
  .services-grid { grid-template-columns: 1fr; }
  .projects-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; gap: 3rem; }
  .form-row { grid-template-columns: 1fr; }
  .projects-header { flex-direction: column; align-items: flex-start; gap: 1rem; }
  .about-values { grid-template-columns: 1fr; }
}

@media (max-width: 500px) {
  .skills-grid { grid-template-columns: 1fr; }
  .projects-grid { grid-template-columns: 1fr; }
}

/* ── SKIP LINK ─────────────────────────────── */
.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  background: var(--accent);
  color: #07080d;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  z-index: 9999;
  text-decoration: none;
  transition: top 0.2s;
}
.skip-link:focus { top: 1rem; }

/* ── THEME TOGGLE ──────────────────────────── */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.theme-toggle {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 100px;
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1rem;
  transition: border-color var(--transition), background var(--transition);
  padding: 0;
}

.theme-toggle:hover {
  border-color: var(--border-accent);
  background: var(--accent-dim);
}

html[data-theme="dark"] .theme-icon-light  { display: none; }
html[data-theme="dark"] .theme-icon-dark   { display: block; }
html[data-theme="light"] .theme-icon-dark  { display: none; }
html[data-theme="light"] .theme-icon-light { display: block; }

/* ── SIGN-UP NAV BUTTON ────────────────────── */
.btn-signup {
  background: transparent;
  border: 1px solid var(--accent);
  color: var(--accent);
  padding: 0.5rem 1.1rem;
  border-radius: var(--radius-sm);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: var(--transition);
}
.btn-signup:hover {
  background: var(--accent-dim);
  box-shadow: 0 0 20px var(--accent-glow);
}

/* ── HERO SIGN-UP BUTTON ───────────────────── */
.btn-signup-hero {
  background: transparent;
  border: none;
  color: var(--accent);
  padding: 0.8rem 0;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 4px;
  transition: opacity var(--transition);
}
.btn-signup-hero:hover { opacity: 0.75; }

/* ── FORM ERRORS ───────────────────────────── */
.form-error {
  display: block;
  font-size: 0.72rem;
  color: #ff5f57;
  font-family: var(--font-mono);
  margin-top: 0.2rem;
  min-height: 1em;
}

.form-group input.invalid,
.form-group textarea.invalid,
.form-group select.invalid {
  border-color: rgba(255, 95, 87, 0.6);
  box-shadow: 0 0 0 3px rgba(255, 95, 87, 0.08);
}

/* ── SIGN-UP MODAL ─────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(7, 8, 13, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  transition: opacity 0.25s ease;
}

.modal-overlay:not([hidden]) {
  opacity: 1;
}

.modal-overlay[hidden] {
  display: none;
}

.modal-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-accent);
  border-radius: calc(var(--radius) * 1.5);
  padding: 2.5rem;
  max-width: 480px;
  width: 100%;
  position: relative;
  box-shadow: 0 32px 80px rgba(0, 0, 0, 0.5), 0 0 80px rgba(0, 212, 255, 0.06);
  transform: translateY(16px);
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.modal-overlay:not([hidden]) .modal-card {
  transform: translateY(0);
}

.modal-close {
  position: absolute;
  top: 1.2rem;
  right: 1.2rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 0.85rem;
  color: var(--text-muted);
  transition: var(--transition);
  padding: 0;
}
.modal-close:hover {
  border-color: var(--border-accent);
  color: var(--text-primary);
}

.modal-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--accent);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.35rem 0.8rem;
  border: 1px solid var(--border-accent);
  border-radius: 100px;
  background: var(--accent-dim);
  margin-bottom: 1rem;
}

.modal-badge::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
  animation: pulse 2s infinite;
}

.modal-title {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 0.6rem;
  color: var(--text-primary);
}

.modal-sub {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 1.75rem;
}

/* ── LIGHT THEME ───────────────────────────── */
html[data-theme="light"] {
  --bg-primary:    #f5f6fa;
  --bg-secondary:  #eceef5;
  --bg-card:       rgba(0, 0, 0, 0.03);
  --accent:        #0095b8;
  --accent-dim:    rgba(0, 149, 184, 0.1);
  --accent-glow:   rgba(0, 149, 184, 0.3);
  --accent-2:      #5b1de0;
  --text-primary:  #111320;
  --text-secondary:#4a5070;
  --text-muted:    #8a90aa;
  --border:        rgba(0, 0, 0, 0.08);
  --border-accent: rgba(0, 149, 184, 0.35);
}

html[data-theme="light"] body {
  background: var(--bg-primary);
  color: var(--text-primary);
}

html[data-theme="light"] nav.scrolled {
  background: rgba(245, 246, 250, 0.92);
}

html[data-theme="light"] .nav-links {
  background: transparent;
}

html[data-theme="light"] #canvas-bg {
  opacity: 0.15;
}

html[data-theme="light"] .about-terminal {
  background: #1a1d2e;
}

html[data-theme="light"] .service-card {
  background: rgba(255, 255, 255, 0.7);
}

html[data-theme="light"] .form-group input,
html[data-theme="light"] .form-group textarea,
html[data-theme="light"] .form-group select {
  background: rgba(255, 255, 255, 0.8);
  color: var(--text-primary);
}

html[data-theme="light"] .form-group input::placeholder,
html[data-theme="light"] .form-group textarea::placeholder {
  color: var(--text-muted);
}

html[data-theme="light"] .modal-card {
  background: #ffffff;
  box-shadow: 0 32px 80px rgba(0, 0, 0, 0.12), 0 0 40px rgba(0, 149, 184, 0.06);
}

html[data-theme="light"] .modal-overlay {
  background: rgba(245, 246, 250, 0.75);
}

html[data-theme="light"] .hero-orb::before {
  background: radial-gradient(circle at 40% 40%,
    rgba(0, 149, 184, 0.1) 0%,
    rgba(91, 29, 224, 0.05) 50%,
    transparent 70%);
}

html[data-theme="light"] ::-webkit-scrollbar-track { background: var(--bg-primary); }
html[data-theme="light"] ::-webkit-scrollbar-thumb { background: var(--accent-dim); }

@media (max-width: 768px) {
  .nav-actions .btn-signup { display: none; }
  .nav-actions { gap: 0.5rem; }
/* =================================================
   FOUNDER SECTION
   ================================================= */
.founder-section {
  padding: 100px 0;
  position: relative;
  z-index: 1;
  overflow: hidden;
}

.founder-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 80% at 15% 50%, rgba(247, 0, 255, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.founder-inner {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 5rem;
  align-items: center;
}

@media (max-width: 860px) {
  .founder-inner { grid-template-columns: 1fr; gap: 3rem; }
}

/* Emblem */
.founder-emblem {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.founder-emblem-ring {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  border: 2px solid var(--border-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  box-shadow:
    0 0 40px rgba(247, 0, 255, 0.15),
    inset 0 0 40px rgba(247, 0, 255, 0.05);
  animation: pulse-ring 4s ease-in-out infinite;
}

.founder-emblem-ring::before {
  content: '';
  position: absolute;
  inset: -8px;
  border-radius: 50%;
  border: 1px dashed rgba(247, 0, 255, 0.25);
  animation: rotate-slow 20s linear infinite;
}

@keyframes pulse-ring {
  0%, 100% { box-shadow: 0 0 40px rgba(247, 0, 255, 0.15), inset 0 0 40px rgba(247, 0, 255, 0.05); }
  50%       { box-shadow: 0 0 60px rgba(247, 0, 255, 0.28), inset 0 0 60px rgba(247, 0, 255, 0.08); }
}

@keyframes rotate-slow {
  to { transform: rotate(360deg); }
}

.founder-emblem-core {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.1em;
  text-shadow: 0 0 20px rgba(247, 0, 255, 0.7);
}

.founder-kappa {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--accent-2);
  background: rgba(0, 232, 255, 0.08);
  border: 1px solid rgba(0, 232, 255, 0.2);
  padding: 0.4em 1.2em;
  border-radius: 20px;
  letter-spacing: 0.05em;
}

/* Founder content */
.founder-tagline {
  font-size: 1.1rem;
  font-family: var(--font-mono);
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  letter-spacing: 0.02em;
}

.founder-quote {
  margin: 2rem 0;
  padding: 1.25rem 1.5rem;
  border-left: 3px solid var(--accent);
  background: rgba(247, 0, 255, 0.04);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-style: italic;
  color: var(--text-secondary);
  line-height: 1.7;
}

.founder-quote cite {
  display: block;
  margin-top: 0.75rem;
  font-style: normal;
  font-size: 0.85rem;
  color: var(--accent);
  font-family: var(--font-mono);
}

.founder-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 0.5rem;
}

@media (prefers-reduced-motion: reduce) {
  .founder-emblem-ring,
  .founder-emblem-ring::before { animation: none; }
}

/* ── ACCESSIBILITY UTILITIES ─────────────────── */
.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;
}