/* ═══════════════════════════════════════════════
   NOBIN PORTFOLIO — MAIN STYLESHEET
   Design: Dark tech aesthetic, green accent
   ═══════════════════════════════════════════════ */

:root {
  --bg:        #080C10;
  --bg-card:   #0D1117;
  --bg-lift:   #161B22;
  --border:    #21262D;
  --border-hi: #30363D;
  --accent:    #00F5A0;
  --accent-2:  #00D4FF;
  --text:      #E6EDF3;
  --text-muted:#8B949E;
  --text-dim:  #484F58;
  --red:       #FF6B6B;
  --yellow:    #FFD166;
  --font-head: 'Syne', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --radius:    12px;
  --radius-lg: 20px;
  --shadow:    0 0 0 1px var(--border), 0 4px 24px rgba(0,0,0,.4);
  --shadow-accent: 0 0 40px rgba(0,245,160,.08);
  --transition: all .25s cubic-bezier(.4,0,.2,1);
}

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

html { scroll-behavior: smooth; }

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

/* ── SCROLLBAR ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border-hi); border-radius: 3px; }

/* ── CONTAINER ── */
.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ── SECTION ── */
.section { padding: 100px 0; }
.section-label {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
  letter-spacing: .08em;
  margin-bottom: 16px;
}
.section-title {
  font-family: var(--font-head);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 16px;
}
.section-sub {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 56px;
  max-width: 500px;
}
.mt-2 { margin-top: 32px; }

/* ══════════════════════════════════════
   NAV
══════════════════════════════════════ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 20px 0;
  transition: var(--transition);
}
.nav.scrolled {
  background: rgba(8,12,16,.85);
  backdrop-filter: blur(20px);
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  font-family: var(--font-head);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text);
  text-decoration: none;
}
.logo-bracket { color: var(--accent); }
.nav-links {
  display: flex;
  gap: 8px;
  list-style: none;
}
.nav-links a {
  font-size: .875rem;
  color: var(--text-muted);
  text-decoration: none;
  padding: 8px 14px;
  border-radius: 8px;
  transition: var(--transition);
  font-weight: 500;
}
.nav-links a:hover { color: var(--text); background: var(--bg-lift); }
.nav-links a.nav-cta {
  background: var(--accent);
  color: var(--bg);
  font-weight: 600;
}
.nav-links a.nav-cta:hover { background: #00d488; color: var(--bg); }
.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--text); border-radius: 2px; transition: var(--transition); }

/* ══════════════════════════════════════
   HERO
══════════════════════════════════════ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding-top: 80px;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,245,160,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,245,160,.04) 1px, transparent 1px);
  background-size: 60px 60px;
}
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: .4;
}
.orb-1 {
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(0,245,160,.15) 0%, transparent 70%);
  top: -200px; right: -100px;
}
.orb-2 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(0,212,255,.1) 0%, transparent 70%);
  bottom: 0; left: -100px;
}
.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: .8rem;
  color: var(--accent);
  background: rgba(0,245,160,.08);
  border: 1px solid rgba(0,245,160,.2);
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 28px;
}
.dot {
  width: 8px; height: 8px;
  background: var(--accent);
  border-radius: 50%;
}
.dot.small { width: 6px; height: 6px; }
.dot.pulse {
  animation: pulse 2s infinite;
  box-shadow: 0 0 0 0 rgba(0,245,160,.4);
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(0,245,160,.4); }
  70% { box-shadow: 0 0 0 8px rgba(0,245,160,0); }
  100% { box-shadow: 0 0 0 0 rgba(0,245,160,0); }
}
.hero-title {
  font-family: var(--font-head);
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -.02em;
  margin-bottom: 24px;
}
.title-accent {
  display: inline-block;
  white-space: nowrap;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-sub {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 40px;
  line-height: 1.8;
}
.hero-actions { display: flex; gap: 16px; margin-bottom: 56px; flex-wrap: wrap; }

/* ── BUTTONS ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: .925rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: var(--transition);
}
.btn-primary {
  background: var(--accent);
  color: var(--bg);
}
.btn-primary:hover {
  background: #00d488;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,245,160,.3);
}
.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border-hi);
}
.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}
.btn-full { width: 100%; justify-content: center; }
.hidden { display: none !important; }

/* ── STATS ── */
.hero-stats {
  display: flex;
  align-items: center;
  gap: 32px;
}
.stat { text-align: center; }
.stat-num {
  display: block;
  font-family: var(--font-head);
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent);
}
.stat-label {
  font-size: .75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .06em;
}
.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border);
}

/* ── CODE CARD ── */
.code-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow), var(--shadow-accent);
}
.code-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 18px;
  background: var(--bg-lift);
  border-bottom: 1px solid var(--border);
}
.code-dot {
  width: 12px; height: 12px;
  border-radius: 50%;
}
.code-dot.red { background: #FF5F57; }
.code-dot.yellow { background: #FFBD2E; }
.code-dot.green { background: #28CA41; }
.code-filename {
  font-family: var(--font-mono);
  font-size: .75rem;
  color: var(--text-muted);
  margin-left: 8px;
}
.code-body {
  padding: 24px;
  font-family: var(--font-mono);
  font-size: .875rem;
  line-height: 1.8;
}
.c-keyword { color: #FF79C6; }
.c-var     { color: var(--accent-2); }
.c-key     { color: var(--text-muted); }
.c-str     { color: var(--accent); }
.c-bool    { color: #BD93F9; }

/* ══════════════════════════════════════
   ABOUT
══════════════════════════════════════ */
.about { background: var(--bg-card); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 80px;
  align-items: center;
}
.about-image-wrap { position: relative; }
.about-image-frame {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4/5;
}
.about-img { width: 100%; height: 100%; object-fit: cover; display: block; }
.image-border {
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  pointer-events: none;
}
.about-badge {
  position: absolute;
  bottom: -20px;
  right: -20px;
  background: var(--bg-lift);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 14px;
  box-shadow: var(--shadow);
}
.badge-icon { font-size: 1.5rem; }
.badge-title { font-weight: 600; font-size: .9rem; }
.badge-sub { font-size: .75rem; color: var(--text-muted); }
.about-text p {
  color: var(--text-muted);
  margin-bottom: 16px;
  font-size: 1rem;
}
.skills-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}
.skill-tag {
  font-family: var(--font-mono);
  font-size: .75rem;
  padding: 6px 14px;
  border-radius: 100px;
  background: rgba(0,245,160,.08);
  border: 1px solid rgba(0,245,160,.2);
  color: var(--accent);
}

/* ══════════════════════════════════════
   SERVICES
══════════════════════════════════════ */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}
.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  opacity: 0;
  transition: var(--transition);
}
.service-card:hover {
  border-color: var(--border-hi);
  transform: translateY(-4px);
  box-shadow: var(--shadow), 0 0 40px rgba(0,245,160,.06);
}
.service-card:hover::before { opacity: 1; }
.service-icon {
  font-size: 2rem;
  margin-bottom: 20px;
  display: block;
}
.service-name {
  font-family: var(--font-head);
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 12px;
}
.service-desc { font-size: .9rem; color: var(--text-muted); line-height: 1.7; }

/* ══════════════════════════════════════
   PROJECTS
══════════════════════════════════════ */
.projects { background: var(--bg-card); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.filter-bar {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}
.filter-btn {
  font-family: var(--font-mono);
  font-size: .8rem;
  padding: 8px 18px;
  border-radius: 100px;
  background: var(--bg-lift);
  border: 1px solid var(--border);
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition);
}
.filter-btn:hover, .filter-btn.active {
  background: rgba(0,245,160,.1);
  border-color: var(--accent);
  color: var(--accent);
}
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 24px;
}
.project-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}
.project-card:hover {
  border-color: var(--border-hi);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}
.project-img-wrap {
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--bg-lift);
  position: relative;
}
.project-img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.project-card:hover .project-img { transform: scale(1.05); }
.project-img-placeholder {
  width: 100%; height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  color: var(--text-dim);
  background: var(--bg-lift);
}
.project-content { padding: 24px; }
.project-tags { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 14px; }
.project-tag {
  font-family: var(--font-mono);
  font-size: .7rem;
  padding: 3px 10px;
  border-radius: 100px;
  background: var(--bg-lift);
  color: var(--text-muted);
  border: 1px solid var(--border);
}
.project-title {
  font-family: var(--font-head);
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.project-desc { font-size: .875rem; color: var(--text-muted); margin-bottom: 20px; }
.project-links { display: flex; gap: 12px; }
.project-link {
  font-size: .8rem;
  color: var(--accent);
  text-decoration: none;
  font-family: var(--font-mono);
  display: flex;
  align-items: center;
  gap: 4px;
  transition: var(--transition);
}
.project-link:hover { opacity: .7; }

/* ══════════════════════════════════════
   WORKFLOW
══════════════════════════════════════ */
.workflow-steps {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 0;
  position: relative;
}
.workflow-steps::before {
  content: '';
  position: absolute;
  top: 52px;
  left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border) 10%, var(--border) 90%, transparent);
}
.workflow-step {
  padding: 32px 24px;
  position: relative;
  z-index: 1;
}
.step-num {
  font-family: var(--font-head);
  font-size: .75rem;
  color: var(--accent);
  font-weight: 700;
  letter-spacing: .1em;
  margin-bottom: 16px;
}
.step-icon {
  font-size: 1.75rem;
  margin-bottom: 16px;
  display: block;
  width: 56px; height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.step-title {
  font-family: var(--font-head);
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.step-desc { font-size: .85rem; color: var(--text-muted); line-height: 1.6; }

/* ══════════════════════════════════════
   CONTACT
══════════════════════════════════════ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 80px;
  align-items: start;
}
.contact-desc { color: var(--text-muted); margin-bottom: 40px; font-size: 1rem; }
.contact-items { display: flex; flex-direction: column; gap: 24px; }
.contact-item { display: flex; align-items: flex-start; gap: 16px; }
.contact-icon { font-size: 1.25rem; }
.contact-label { font-size: .75rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: .06em; }
.contact-val { font-weight: 500; margin-top: 2px; }
.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { display: flex; flex-direction: column; gap: 8px; margin-bottom: 20px; }
.form-group label { font-size: .8rem; font-weight: 500; color: var(--text-muted); letter-spacing: .04em; }
.form-group input,
.form-group textarea {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 16px;
  font-family: var(--font-body);
  font-size: .9rem;
  color: var(--text);
  transition: var(--transition);
  outline: none;
  resize: vertical;
}
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0,245,160,.08);
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--text-dim); }
.form-status {
  margin-top: 16px;
  font-size: .875rem;
  text-align: center;
  padding: 12px;
  border-radius: var(--radius);
}
.form-status.success { background: rgba(0,245,160,.1); color: var(--accent); border: 1px solid rgba(0,245,160,.2); }
.form-status.error { background: rgba(255,107,107,.1); color: var(--red); border: 1px solid rgba(255,107,107,.2); }

/* ══════════════════════════════════════
   FOOTER
══════════════════════════════════════ */
.footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.footer-copy { font-size: .85rem; color: var(--text-muted); }
.footer-admin {
  font-size: .8rem;
  color: var(--text-dim);
  text-decoration: none;
  font-family: var(--font-mono);
  transition: var(--transition);
}
.footer-admin:hover { color: var(--accent); }

/* ══════════════════════════════════════
   LIVE CHAT
══════════════════════════════════════ */
.live-chat {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 200;
}
.chat-toggle {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: var(--accent);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  box-shadow: 0 4px 20px rgba(0,245,160,.4);
  transition: var(--transition);
}
.chat-toggle:hover { transform: scale(1.1); }
.chat-window {
  position: absolute;
  bottom: 72px;
  right: 0;
  width: 340px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  overflow: hidden;
  animation: slideUp .2s ease;
}
@keyframes slideUp { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: translateY(0); } }
.chat-header {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 20px;
  background: var(--bg-lift);
  border-bottom: 1px solid var(--border);
}
.chat-avatar {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.1rem;
}
.chat-name { font-weight: 600; font-size: .9rem; }
.chat-status { font-size: .75rem; color: var(--text-muted); display: flex; align-items: center; gap: 6px; margin-top: 2px; }
.chat-messages {
  padding: 20px;
  height: 220px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.chat-msg { display: flex; flex-direction: column; gap: 4px; }
.chat-msg.bot { align-items: flex-start; }
.chat-msg.user { align-items: flex-end; }
.msg-bubble {
  max-width: 80%;
  padding: 10px 14px;
  border-radius: 14px;
  font-size: .875rem;
  line-height: 1.5;
}
.bot .msg-bubble {
  background: var(--bg-lift);
  border: 1px solid var(--border);
  border-bottom-left-radius: 4px;
}
.user .msg-bubble {
  background: var(--accent);
  color: var(--bg);
  border-bottom-right-radius: 4px;
}
.msg-time { font-size: .7rem; color: var(--text-dim); }
.chat-input-wrap {
  display: flex;
  gap: 10px;
  padding: 14px 16px;
  border-top: 1px solid var(--border);
}
.chat-input-wrap input {
  flex: 1;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 14px;
  font-family: var(--font-body);
  font-size: .875rem;
  color: var(--text);
  outline: none;
}
.chat-input-wrap input:focus { border-color: var(--accent); }
.chat-send-btn {
  width: 40px; height: 40px;
  background: var(--accent);
  border: none;
  border-radius: var(--radius);
  color: var(--bg);
  font-size: 1.1rem;
  cursor: pointer;
  font-weight: bold;
  transition: var(--transition);
}
.chat-send-btn:hover { background: #00d488; }

/* ══════════════════════════════════════
   EMPTY STATES
══════════════════════════════════════ */
.empty-state {
  grid-column: 1/-1;
  text-align: center;
  padding: 60px;
  color: var(--text-dim);
  border: 1px dashed var(--border);
  border-radius: var(--radius-lg);
}
.empty-state-icon { font-size: 2.5rem; margin-bottom: 12px; }

/* ══════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════ */
@media (max-width: 900px) {
  .hero .container { grid-template-columns: 1fr; gap: 48px; }
  .hero-visual { order: -1; }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .about-image-wrap { max-width: 320px; margin: 0 auto; }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .workflow-steps::before { display: none; }
}
@media (max-width: 680px) {
  .section { padding: 72px 0; }
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    inset: 0;
    background: var(--bg);
    z-index: 99;
    align-items: center;
    justify-content: center;
    gap: 20px;
    padding: 40px;
  }
  .nav-links.open a { font-size: 1.25rem; }
  .form-row { grid-template-columns: 1fr; }
  .hero-stats { gap: 20px; }
  .footer-inner { flex-direction: column; text-align: center; }
  .chat-window { width: calc(100vw - 40px); right: -8px; }
  .hero-title { font-size: clamp(2.2rem, 11vw, 3.2rem); }
  .title-accent { white-space: nowrap; }
}