/* ═══════════════════════════════════════
   Solder3t — Modern Portfolio Styles
   ═══════════════════════════════════════ */

:root {
  --bg: #0a0a0f;
  --bg-elevated: #111118;
  --bg-card: rgba(255, 255, 255, 0.03);
  --bg-card-hover: rgba(255, 255, 255, 0.06);
  --border: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 255, 255, 0.15);
  --text: #f0f0f5;
  --text-muted: #8a8a9a;
  --text-dim: #5a5a6a;
  --accent: #6366f1;
  --accent-light: #818cf8;
  --accent-glow: rgba(99, 102, 241, 0.3);
  --gradient-1: #6366f1;
  --gradient-2: #8b5cf6;
  --gradient-3: #a78bfa;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: "JetBrains Mono", monospace;
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
}

/* ── Mesh Gradient Background ── */
.mesh-bg {
  position: fixed;
  inset: 0;
  z-index: -2;
  overflow: hidden;
}

.mesh-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.4;
  animation: orbFloat 20s ease-in-out infinite;
}

.mesh-orb--1 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--gradient-1), transparent 70%);
  top: -200px;
  left: -100px;
  animation-delay: 0s;
}

.mesh-orb--2 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, var(--gradient-2), transparent 70%);
  top: 30%;
  right: -150px;
  animation-delay: -5s;
  animation-duration: 25s;
}

.mesh-orb--3 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, var(--gradient-3), transparent 70%);
  bottom: -100px;
  left: 30%;
  animation-delay: -10s;
  animation-duration: 22s;
}

.mesh-orb--4 {
  width: 350px;
  height: 350px;
  background: radial-gradient(circle, #06b6d4, transparent 70%);
  top: 60%;
  left: -100px;
  animation-delay: -15s;
  animation-duration: 28s;
  opacity: 0.2;
}

@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  25% { transform: translate(80px, -60px) scale(1.1); }
  50% { transform: translate(-40px, 80px) scale(0.9); }
  75% { transform: translate(60px, 40px) scale(1.05); }
}

/* ── Grain Overlay ── */
.grain {
  position: fixed;
  inset: 0;
  z-index: -1;
  opacity: 0.03;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 256px 256px;
}

/* ── Cursor Glow ── */
.cursor-glow {
  position: fixed;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--accent-glow), transparent 70%);
  pointer-events: none;
  z-index: -1;
  opacity: 0;
  transform: translate(-50%, -50%);
  transition: opacity 0.4s ease;
  mix-blend-mode: screen;
}

.cursor-glow.active {
  opacity: 1;
}

/* ── Header ── */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  background: rgba(10, 10, 15, 0.7);
  border-bottom: 1px solid var(--border);
  transition: transform 0.4s var(--ease-out-expo), background 0.3s ease;
}

.header.hidden {
  transform: translateY(-100%);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text);
}

.logo-mark {
  display: flex;
  align-items: center;
  justify-content: center;
}

.logo-text {
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}

.nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-link {
  text-decoration: none;
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: 999px;
  transition: color 0.2s ease, background 0.2s ease;
}

.nav-link:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle-line {
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.3s var(--ease-out-expo), opacity 0.2s ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(10, 10, 15, 0.95);
  backdrop-filter: blur(20px);
  z-index: 99;
  flex-direction: column;
  padding: 2rem;
  gap: 0.5rem;
  opacity: 0;
  transform: translateY(-20px);
  transition: opacity 0.3s ease, transform 0.3s var(--ease-out-expo);
  pointer-events: none;
}

.mobile-menu.open {
  display: flex;
  opacity: 1;
  transform: translateY(0);
  pointer-events: all;
}

.mobile-menu-link {
  text-decoration: none;
  color: var(--text);
  font-size: 1.5rem;
  font-weight: 600;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
  transition: color 0.2s ease;
}

.mobile-menu-link:hover {
  color: var(--accent-light);
}

/* ── Main Content ── */
main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* ── Hero ── */
.hero {
  padding-top: 160px;
  padding-bottom: 100px;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 2rem;
  animation: fadeInUp 0.8s var(--ease-out-expo) both;
}

.hero-badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #22c55e;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.3); }
}

.hero-title {
  font-size: clamp(2.5rem, 7vw, 5rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
  animation: fadeInUp 0.8s var(--ease-out-expo) 0.1s both;
}

.hero-title-line {
  display: block;
}

.hero-title-line--accent {
  background: linear-gradient(135deg, var(--gradient-1), var(--gradient-2), var(--gradient-3));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  max-width: 600px;
  margin: 0 auto 2.5rem;
  font-size: 1.15rem;
  color: var(--text-muted);
  line-height: 1.7;
  animation: fadeInUp 0.8s var(--ease-out-expo) 0.2s both;
}

.hero-ctas {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 4rem;
  animation: fadeInUp 0.8s var(--ease-out-expo) 0.3s both;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 1.5rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  transition: transform 0.3s var(--ease-spring), box-shadow 0.3s ease, background 0.2s ease;
  cursor: pointer;
  border: none;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn:active {
  transform: translateY(0);
}

.btn--primary {
  background: linear-gradient(135deg, var(--gradient-1), var(--gradient-2));
  color: white;
  box-shadow: 0 8px 32px var(--accent-glow);
}

.btn--primary:hover {
  box-shadow: 0 12px 40px rgba(99, 102, 241, 0.45);
}

.btn--ghost {
  background: var(--bg-card);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn--ghost:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
}

/* ── Hero Stats ── */
.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  animation: fadeInUp 0.8s var(--ease-out-expo) 0.4s both;
}

.stat {
  text-align: center;
}

.stat-value {
  display: block;
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: 0.82rem;
  color: var(--text-dim);
  margin-top: 0.25rem;
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border);
}

/* ── Sections ── */
.section {
  padding: 80px 0;
}

.section-header {
  margin-bottom: 3rem;
}

.section-tag {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-light);
  font-weight: 500;
}

.section-header h2 {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-top: 0.5rem;
}

/* ── App Grid ── */
.app-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
}

.app-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: transform 0.4s var(--ease-out-expo), border-color 0.3s ease, box-shadow 0.3s ease;
  position: relative;
  overflow: hidden;
}

.app-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--accent-glow), transparent 60%);
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}

.app-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

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

.app-card-meta {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-light);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.75rem;
}

.app-card h3 {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.app-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 1rem;
}

.app-card-package {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-dim);
  margin-bottom: 1.25rem;
}

.app-card-status {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.8rem;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 500;
  margin-bottom: 1.25rem;
}

.app-card-status--rc {
  background: rgba(234, 179, 8, 0.1);
  color: #eab308;
  border: 1px solid rgba(234, 179, 8, 0.2);
}

.app-card-status--live {
  background: rgba(34, 197, 94, 0.1);
  color: #22c55e;
  border: 1px solid rgba(34, 197, 94, 0.2);
}

.app-card-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.app-card-actions .btn {
  padding: 0.6rem 1.2rem;
  font-size: 0.85rem;
}

.btn--disabled {
  background: var(--bg-card);
  color: var(--text-dim);
  border: 1px solid var(--border);
  cursor: not-allowed;
  pointer-events: none;
}

/* ── Project Grid ── */
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  transition: transform 0.3s var(--ease-out-expo), border-color 0.3s ease;
}

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

.project-card h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.project-card p {
  color: var(--text-muted);
  font-size: 0.88rem;
  line-height: 1.5;
  margin-bottom: 1rem;
}

.project-card a {
  color: var(--accent-light);
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  transition: gap 0.2s ease;
}

.project-card a:hover {
  gap: 0.5rem;
}

/* ── About Section ── */
.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}

.about-text p {
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.7;
  margin-bottom: 1rem;
}

.about-values {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.value-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  transition: border-color 0.3s ease;
}

.value-card:hover {
  border-color: var(--border-hover);
}

.value-icon {
  color: var(--accent-light);
  margin-bottom: 0.75rem;
}

.value-card h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
}

.value-card p {
  color: var(--text-muted);
  font-size: 0.88rem;
  line-height: 1.5;
}

/* ── Support Section ── */
.support-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.support-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: border-color 0.3s ease;
}

.support-card:hover {
  border-color: var(--border-hover);
}

.support-card-icon {
  color: var(--accent-light);
  margin-bottom: 1rem;
}

.support-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.support-card p {
  color: var(--text-muted);
  font-size: 0.92rem;
  margin-bottom: 0.75rem;
}

.support-link {
  color: var(--accent-light);
  font-weight: 600;
  text-decoration: none;
  transition: color 0.2s ease;
}

.support-link:hover {
  color: var(--accent);
}

.policy-links {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.policy-link {
  color: var(--text);
  font-size: 0.88rem;
  text-decoration: none;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  transition: border-color 0.2s ease, background 0.2s ease;
}

.policy-link:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
}

/* ── Footer ── */
.footer {
  border-top: 1px solid var(--border);
  padding: 3rem 2rem;
  margin-top: 4rem;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.footer-logo {
  font-weight: 700;
  font-size: 1.1rem;
}

.footer-tagline {
  color: var(--text-dim);
  font-size: 0.85rem;
  margin-top: 0.25rem;
}

.footer-links {
  display: flex;
  gap: 1.5rem;
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.88rem;
  transition: color 0.2s ease;
}

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

.footer-copy {
  color: var(--text-dim);
  font-size: 0.82rem;
}

/* ── Reveal Animation ── */
[data-reveal] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s var(--ease-out-expo), transform 0.8s var(--ease-out-expo);
}

[data-reveal].revealed {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger children */
[data-reveal] .app-card,
[data-reveal] .project-card,
[data-reveal] .value-card,
[data-reveal] .support-card {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s var(--ease-out-expo), transform 0.6s var(--ease-out-expo);
}

[data-reveal].revealed .app-card,
[data-reveal].revealed .project-card,
[data-reveal].revealed .value-card,
[data-reveal].revealed .support-card {
  opacity: 1;
  transform: translateY(0);
}

[data-reveal].revealed .app-card:nth-child(1),
[data-reveal].revealed .project-card:nth-child(1),
[data-reveal].revealed .value-card:nth-child(1),
[data-reveal].revealed .support-card:nth-child(1) { transition-delay: 0.1s; }

[data-reveal].revealed .app-card:nth-child(2),
[data-reveal].revealed .project-card:nth-child(2),
[data-reveal].revealed .value-card:nth-child(2),
[data-reveal].revealed .support-card:nth-child(2) { transition-delay: 0.2s; }

[data-reveal].revealed .app-card:nth-child(3),
[data-reveal].revealed .project-card:nth-child(3),
[data-reveal].revealed .value-card:nth-child(3) { transition-delay: 0.3s; }

[data-reveal].revealed .project-card:nth-child(4) { transition-delay: 0.4s; }
[data-reveal].revealed .project-card:nth-child(5) { transition-delay: 0.5s; }
[data-reveal].revealed .project-card:nth-child(6) { transition-delay: 0.6s; }

/* ── Keyframes ── */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .header-inner {
    padding: 0 1.25rem;
  }

  .nav {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  main {
    padding: 0 1.25rem;
  }

  .hero {
    padding-top: 120px;
    padding-bottom: 60px;
  }

  .hero-title {
    font-size: clamp(2rem, 10vw, 3rem);
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .hero-stats {
    gap: 1.25rem;
  }

  .stat-value {
    font-size: 1.2rem;
  }

  .section {
    padding: 60px 0;
  }

  .about-content {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .app-grid {
    grid-template-columns: 1fr;
  }

  .project-grid {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }

  .footer-links {
    justify-content: center;
  }

  .cursor-glow {
    display: none;
  }
}

@media (max-width: 480px) {
  .hero-stats {
    flex-direction: column;
    gap: 1rem;
  }

  .stat-divider {
    width: 40px;
    height: 1px;
  }

  .hero-ctas {
    flex-direction: column;
  }

  .hero-ctas .btn {
    width: 100%;
    justify-content: center;
  }
}