/* ─────────────────────────────────────────
   RESET & BASE
───────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --c-bg:         #0d0d14;
  --c-bg2:        #11111c;
  --c-surface:    #18182a;
  --c-border:     rgba(255,255,255,0.08);
  --c-text:       #f0f0f5;
  --c-muted:      #8888aa;
  --c-primary:    #a855f7;
  --c-secondary:  #ec4899;
  --c-accent:     #38bdf8;
  --c-grad:       linear-gradient(135deg, #a855f7, #ec4899, #f97316);
  --c-grad2:      linear-gradient(135deg, #38bdf8, #a855f7);
  --radius:       16px;
  --radius-sm:    8px;
  --shadow:       0 4px 32px rgba(0,0,0,0.4);
  --transition:   0.3s cubic-bezier(0.4,0,0.2,1);
  --font-main:    'Inter', sans-serif;
  --font-head:    'Space Grotesk', sans-serif;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-main);
  background: var(--c-bg);
  color: var(--c-text);
  line-height: 1.65;
  overflow-x: hidden;
}

::selection { background: rgba(168,85,247,0.35); }
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--c-bg); }
::-webkit-scrollbar-thumb { background: var(--c-primary); border-radius: 99px; }

/* ─────────────────────────────────────────
   TYPOGRAPHY
───────────────────────────────────────── */
h1, h2, h3, h4 { font-family: var(--font-head); font-weight: 700; line-height: 1.2; }
h1 { font-size: clamp(2.4rem, 6vw, 5rem); }
h2 { font-size: clamp(1.8rem, 4vw, 3rem); }
h3 { font-size: 1.2rem; }
p  { color: var(--c-muted); }
a  { text-decoration: none; color: inherit; }

.gradient-text {
  background: var(--c-grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ─────────────────────────────────────────
   LAYOUT HELPERS
───────────────────────────────────────── */
.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 100px 0;
}

.section-dark {
  background: var(--c-bg2);
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-primary);
  margin-bottom: 12px;
}

/* ─────────────────────────────────────────
   NAVBAR
───────────────────────────────────────── */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 20px 0;
  transition: var(--transition);
}

.navbar.scrolled {
  background: rgba(13,13,20,0.85);
  backdrop-filter: blur(16px);
  padding: 14px 0;
  border-bottom: 1px solid var(--c-border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

.nav-logo {
  font-family: var(--font-head);
  font-size: 1.5rem;
  font-weight: 700;
}

.dot {
  background: var(--c-grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-logo {
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  list-style: none;
  align-items: center;
  gap: 36px;
}

.nav-links a {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--c-muted);
  transition: color var(--transition);
}

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

.btn-nav {
  background: var(--c-grad) !important;
  color: #fff !important;
  padding: 9px 20px;
  border-radius: 99px;
  font-weight: 600 !important;
  font-size: 0.88rem !important;
  transition: opacity var(--transition) !important;
}

.btn-nav:hover { opacity: 0.85; }

/* Burger */
.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.burger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--c-text);
  border-radius: 99px;
  transition: var(--transition);
}

/* ─────────────────────────────────────────
   HERO
───────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: 120px 24px 80px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.18;
  animation: blobFloat 12s ease-in-out infinite;
}

.blob-1 {
  width: 600px; height: 600px;
  background: var(--c-primary);
  top: -200px; left: -150px;
  animation-delay: 0s;
}

.blob-2 {
  width: 500px; height: 500px;
  background: var(--c-secondary);
  bottom: -100px; right: -100px;
  animation-delay: 4s;
}

.blob-3 {
  width: 350px; height: 350px;
  background: var(--c-accent);
  top: 40%; left: 50%;
  animation-delay: 8s;
}

@keyframes blobFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33%       { transform: translate(30px, -30px) scale(1.05); }
  66%       { transform: translate(-20px, 20px) scale(0.95); }
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 760px;
  text-align: center;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(168,85,247,0.15);
  border: 1px solid rgba(168,85,247,0.3);
  color: var(--c-primary);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 7px 16px;
  border-radius: 99px;
  margin-bottom: 24px;
  letter-spacing: 0.04em;
}

.badge::before {
  content: '';
  display: inline-block;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: #4ade80;
  animation: pulse 2s infinite;
}

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

.hero-content h1 {
  margin-bottom: 24px;
}

.hero-sub {
  font-size: 1.1rem;
  color: var(--c-muted);
  max-width: 560px;
  margin: 0 auto 40px;
}

.hero-cta {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.hero-scroll-hint {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--c-muted);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  animation: fadeInUp 1s 1.5s both;
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--c-muted), transparent);
  animation: scrollAnim 2s ease-in-out infinite;
}

@keyframes scrollAnim {
  0%   { transform: scaleY(0); transform-origin: top; }
  50%  { transform: scaleY(1); transform-origin: top; }
  51%  { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ─────────────────────────────────────────
   BUTTONS
───────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: 99px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
}

.btn-primary {
  background: var(--c-grad);
  color: #fff;
  box-shadow: 0 0 24px rgba(168,85,247,0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 36px rgba(168,85,247,0.5);
}

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

.btn-ghost:hover {
  background: rgba(255,255,255,0.06);
  border-color: rgba(255,255,255,0.2);
}

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

/* ─────────────────────────────────────────
   STACK BANNER
───────────────────────────────────────── */
.stack-banner {
  padding: 22px 24px;
  background: var(--c-surface);
  border-top: 1px solid var(--c-border);
  border-bottom: 1px solid var(--c-border);
  overflow: hidden;
}

.stack-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 12px 8px;
}

.stack-tag {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--c-muted);
  letter-spacing: 0.04em;
}

.sep { color: var(--c-border); }

/* ─────────────────────────────────────────
   CARDS (SERVICES)
───────────────────────────────────────── */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 32px;
  transition: var(--transition);
}

.card:hover {
  border-color: rgba(168,85,247,0.4);
  transform: translateY(-4px);
  box-shadow: 0 8px 40px rgba(168,85,247,0.12);
}

.card-icon {
  font-size: 2rem;
  margin-bottom: 16px;
}

.card-service h3 {
  margin-bottom: 12px;
  color: var(--c-text);
}

.card-service p {
  font-size: 0.92rem;
  margin-bottom: 20px;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
}

.tag-list li {
  background: rgba(168,85,247,0.1);
  border: 1px solid rgba(168,85,247,0.2);
  color: var(--c-primary);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 11px;
  border-radius: 99px;
}

/* ─────────────────────────────────────────
   PORTFOLIO
───────────────────────────────────────── */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 28px;
}

.portfolio-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
}

.portfolio-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: rgba(255,255,255,0.15);
}

.portfolio-img {
  height: 160px;
  background: linear-gradient(135deg, var(--accent, #7c3aed), rgba(0,0,0,0.4));
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.portfolio-img::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.2);
}

.project-icon {
  font-size: 3rem;
  position: relative;
  z-index: 1;
}

.portfolio-info {
  padding: 24px;
}

.portfolio-type {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--c-primary);
}

.portfolio-info h3 {
  margin: 8px 0 10px;
  color: var(--c-text);
}

.portfolio-info p {
  font-size: 0.9rem;
  margin-bottom: 16px;
}

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

.portfolio-tags span {
  background: rgba(255,255,255,0.06);
  color: var(--c-muted);
  font-size: 0.75rem;
  padding: 4px 10px;
  border-radius: 99px;
  border: 1px solid var(--c-border);
}

/* ─────────────────────────────────────────
   ABOUT
───────────────────────────────────────── */
.about-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about-text h2 { margin: 8px 0 24px; }

.about-text p {
  margin-bottom: 16px;
  font-size: 0.97rem;
}

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

.about-values {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: 28px 0 36px;
}

.value-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.92rem;
  color: var(--c-text);
}

.value-icon { color: var(--c-primary); font-size: 0.8rem; }

.about-card-stack {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.about-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 28px 32px;
  transition: var(--transition);
}

.about-card:hover { border-color: rgba(168,85,247,0.3); }

.about-card-2 {
  background: linear-gradient(135deg, rgba(168,85,247,0.1), rgba(236,72,153,0.1));
  border-color: rgba(168,85,247,0.2);
  margin-left: 24px;
}

.about-card-3 {
  background: linear-gradient(135deg, rgba(56,189,248,0.1), rgba(168,85,247,0.1));
  border-color: rgba(56,189,248,0.2);
  margin-left: 48px;
}

.about-stat {
  font-family: var(--font-head);
  font-size: 2.5rem;
  font-weight: 700;
  background: var(--c-grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.about-stat-label {
  font-size: 0.85rem;
  color: var(--c-muted);
  margin-top: 4px;
}

/* ─────────────────────────────────────────
   CONTACT
───────────────────────────────────────── */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 80px;
  align-items: start;
}

.contact-intro {
  font-size: 1rem;
  margin-bottom: 36px;
  color: var(--c-muted);
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-link {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--c-muted);
  font-size: 0.92rem;
  transition: color var(--transition);
}

.contact-link:hover { color: var(--c-text); }
.contact-link-icon { font-size: 1.1rem; }

/* Form */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--c-text);
}

.form-group input,
.form-group textarea {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  color: var(--c-text);
  font-family: var(--font-main);
  font-size: 0.93rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  resize: vertical;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: rgba(255,255,255,0.2);
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--c-primary);
  box-shadow: 0 0 0 3px rgba(168,85,247,0.15);
}

.form-group input.error,
.form-group textarea.error {
  border-color: #f87171;
}

.field-error {
  font-size: 0.78rem;
  color: #f87171;
  min-height: 18px;
}

.form-success {
  background: rgba(74,222,128,0.1);
  border: 1px solid rgba(74,222,128,0.3);
  color: #4ade80;
  border-radius: var(--radius-sm);
  padding: 14px 18px;
  text-align: center;
  font-size: 0.92rem;
  font-weight: 500;
}

/* ─────────────────────────────────────────
   FOOTER
───────────────────────────────────────── */
.footer {
  padding: 40px 0;
  border-top: 1px solid var(--c-border);
  background: var(--c-bg);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer p {
  font-size: 0.85rem;
  color: var(--c-muted);
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  font-size: 0.85rem;
  color: var(--c-muted);
  transition: color var(--transition);
}

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

/* ─────────────────────────────────────────
   REVEAL ANIMATION
───────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ─────────────────────────────────────────
   RESPONSIVE
───────────────────────────────────────── */
@media (max-width: 900px) {
  .about-layout,
  .contact-layout {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .about-card-stack .about-card-2 { margin-left: 16px; }
  .about-card-stack .about-card-3 { margin-left: 32px; }
}

@media (max-width: 768px) {
  .section { padding: 70px 0; }

  /* Mobile nav */
  .burger { display: flex; }

  .nav-links {
    position: fixed;
    top: 0; right: 0; bottom: 0;
    width: 75vw;
    max-width: 320px;
    background: var(--c-bg2);
    border-left: 1px solid var(--c-border);
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    padding: 60px 36px;
    gap: 28px;
    transform: translateX(100%);
    transition: transform var(--transition);
  }

  .nav-links.open { transform: translateX(0); }
  .nav-links a { font-size: 1.1rem; color: var(--c-text); }

  .services-grid,
  .portfolio-grid {
    grid-template-columns: 1fr;
  }

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

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

@media (max-width: 480px) {
  .hero { padding: 100px 20px 60px; }
  .hero-cta { flex-direction: column; align-items: center; }
  .btn { width: 100%; justify-content: center; }
}