/* ── Variables ────────────────────────────────────────────────────────────── */
:root {
  --accent:    #00e676;
  --accent2:   #00b85c;
  --radius:    10px;
  --trans:     .25s ease;
}

[data-theme="dark"] {
  --bg:        #080c14;
  --bg2:       #0d1220;
  --bg3:       #131929;
  --border:    #1e2a40;
  --text:      #e2e8f0;
  --text2:     #94a3b8;
  --card-bg:   #0d1220;
  --nav-bg:    rgba(8,12,20,.85);
}

[data-theme="light"] {
  --bg:        #f2f0eb;
  --bg2:       #f8f6f1;
  --bg3:       #e8e5de;
  --border:    #d4cfc6;
  --text:      #1c1c2e;
  --text2:     #5a5870;
  --card-bg:   #f8f6f1;
  --nav-bg:    rgba(242,240,235,.88);
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  font-size: 15px;
  line-height: 1.7;
  transition: background var(--trans), color var(--trans);
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
button { cursor: pointer; font-family: inherit; }
img { max-width: 100%; }

/* ── Utilities ────────────────────────────────────────────────────────────── */
.hidden { display: none !important; }
.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }
.section { padding: 96px 0; position: relative; z-index: 1; }
.section-alt { background: var(--bg2); }

/* ── Reveal animations ────────────────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .6s ease, transform .6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Navigation ───────────────────────────────────────────────────────────── */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: var(--nav-bg);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--trans), background var(--trans);
}
#navbar.scrolled { border-bottom-color: var(--border); }

.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.nav-logo {
  font-weight: 800;
  font-size: 17px;
  letter-spacing: .1em;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  gap: 4px;
  list-style: none;
}
.nav-links a {
  padding: 6px 14px;
  border-radius: 6px;
  font-size: 14px;
  color: var(--text2);
  transition: color var(--trans), background var(--trans);
}
.nav-links a:hover, .nav-links a.active { color: var(--text); background: var(--bg3); }

.nav-controls { display: flex; gap: 8px; align-items: center; }

.ctrl-btn {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text2);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 12px;
  transition: all var(--trans);
  display: flex;
  align-items: center;
  gap: 4px;
}
.ctrl-btn:hover { color: var(--text); border-color: var(--accent); }

#theme-toggle .icon-sun { display: none; }
#theme-toggle .icon-moon { display: inline; }
[data-theme="light"] #theme-toggle .icon-sun  { display: inline; }
[data-theme="light"] #theme-toggle .icon-moon { display: none; }

.mobile-only { display: none; }

.mobile-menu {
  background: var(--bg2);
  border-top: 1px solid var(--border);
  padding: 12px 24px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.mobile-menu a {
  padding: 10px 12px;
  border-radius: 6px;
  color: var(--text2);
  font-size: 14px;
  transition: all var(--trans);
}
.mobile-menu a:hover { color: var(--text); background: var(--bg3); }

/* ── Hero ─────────────────────────────────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: 80px 24px 0;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.grid-overlay {
  position: absolute;
  inset: -40px;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 50px 50px;
  opacity: .3;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 20%, transparent 100%);
}

[data-theme="dark"] .hero::before {
  content: '';
  position: absolute;
  top: -200px; left: 50%;
  transform: translateX(-50%);
  width: 800px; height: 800px;
  background: radial-gradient(circle, rgba(0,230,118,.06) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 760px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.hero-badge {
  display: inline-block;
  padding: 5px 14px;
  border: 1px solid var(--accent);
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: .08em;
  text-transform: uppercase;
  animation: pulse-border 3s ease infinite;
}

@keyframes pulse-border {
  0%, 100% { box-shadow: 0 0 0 0 rgba(0,230,118,.3); }
  50%       { box-shadow: 0 0 0 6px rgba(0,230,118,0); }
}

.hero-title {
  font-size: clamp(56px, 10vw, 96px);
  font-weight: 900;
  letter-spacing: .06em;
  background: linear-gradient(135deg, var(--text) 30%, var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.1;
  animation: hero-entrance .8s ease both;
}

@keyframes hero-entrance {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

.hero-sub {
  font-size: 18px;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: .05em;
  text-transform: uppercase;
}

.hero-desc {
  font-size: 16px;
  color: var(--text2);
  max-width: 560px;
  line-height: 1.8;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 20px 32px;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 12px;
  margin: 8px 0;
}

.stat { text-align: center; }
.stat-val {
  display: block;
  font-size: 28px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-label { font-size: 12px; color: var(--text2); text-transform: uppercase; letter-spacing: .06em; }
.stat-sep { width: 1px; height: 40px; background: var(--border); }

.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; }

.scroll-hint {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
}
.scroll-line {
  width: 1px;
  height: 50px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  margin: 0 auto;
  animation: scroll-anim 2s ease infinite;
}
@keyframes scroll-anim {
  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-primary {
  display: inline-block;
  padding: 11px 24px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  border: none;
  border-radius: 8px;
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .02em;
  transition: opacity var(--trans), transform var(--trans), box-shadow var(--trans);
}
.btn-primary:hover {
  opacity: .9;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,230,118,.2);
}

.btn-ghost {
  display: inline-block;
  padding: 11px 24px;
  background: none;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text2);
  font-size: 14px;
  font-weight: 600;
  transition: all var(--trans);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--text); transform: translateY(-2px); }

.btn-link {
  background: none;
  border: none;
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  padding: 0;
  transition: opacity var(--trans);
}
.btn-link:hover { opacity: .7; }

/* ── Section headers ──────────────────────────────────────────────────────── */
.section-header { text-align: center; margin-bottom: 48px; }
.section-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--accent);
  margin-bottom: 12px;
}
.section-header h2 {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  margin-bottom: 14px;
}
.section-desc { color: var(--text2); max-width: 520px; margin: 0 auto; }

/* ── Tabs ─────────────────────────────────────────────────────────────────── */
.tabs {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-bottom: 40px;
}
.tab-btn {
  padding: 9px 22px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: none;
  color: var(--text2);
  font-size: 14px;
  font-weight: 600;
  transition: all var(--trans);
}
.tab-btn.active {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  border-color: transparent;
  color: #fff;
}
.tab-btn:hover:not(.active) { border-color: var(--accent); color: var(--text); }

/* ── Cards ────────────────────────────────────────────────────────────────── */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: border-color var(--trans), transform var(--trans), box-shadow var(--trans);
  cursor: pointer;
}
.card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0,230,118,.08);
}
.card-planned { opacity: .65; }
.card-planned:hover { border-color: var(--accent2); box-shadow: 0 12px 32px rgba(124,58,237,.08); }

.card-icon { font-size: 28px; }
.card-body h3 { font-size: 17px; font-weight: 700; margin-bottom: 6px; }
.card-body p  { font-size: 13px; color: var(--text2); line-height: 1.6; }
.card-footer  { display: flex; align-items: center; justify-content: space-between; margin-top: auto; }

.badge {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .05em;
  padding: 3px 10px;
  border-radius: 20px;
}
.badge-ok      { background: rgba(34,197,94,.12); color: #4ade80; }
.badge-planned { background: rgba(124,58,237,.12); color: #a78bfa; }

/* ── About ────────────────────────────────────────────────────────────────── */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.about-text {
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.about-text p { color: var(--text2); line-height: 1.85; }
.about-text strong { color: var(--text); font-weight: 700; }

.skills-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.skill-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 500;
  transition: all var(--trans);
}
.skill-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.skill-icon { font-size: 18px; }

/* ── Contact ──────────────────────────────────────────────────────────────── */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 48px;
  align-items: start;
}

.contact-links { display: flex; flex-direction: column; gap: 12px; }

.contact-link {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all var(--trans);
}
.contact-link:hover:not(.contact-link-disabled) {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,230,118,.08);
}
.contact-link-disabled { opacity: .5; cursor: default; }
.contact-link-icon {
  width: 40px; height: 40px;
  border-radius: 8px;
  background: var(--bg3);
  display: flex; align-items: center; justify-content: center;
  color: var(--text2);
  flex-shrink: 0;
}
.contact-link-name { display: block; font-weight: 600; font-size: 14px; }
.contact-link-sub  { display: block; font-size: 12px; color: var(--text2); }

.contact-form {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-size: 13px; font-weight: 600; color: var(--text2); }

.contact-form input,
.contact-form textarea {
  padding: 10px 14px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 14px;
  font-family: inherit;
  outline: none;
  resize: vertical;
  transition: border-color var(--trans);
}
.contact-form input:focus,
.contact-form textarea:focus { border-color: var(--accent); }

.form-feedback {
  font-size: 13px;
  padding: 10px 14px;
  border-radius: 8px;
  text-align: center;
}
.form-feedback.success { background: rgba(34,197,94,.12); color: #4ade80; }
.form-feedback.error   { background: rgba(239,68,68,.12);  color: #f87171; }

/* ── Footer ───────────────────────────────────────────────────────────────── */
footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--border);
  padding: 24px;
}
.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}
.footer-logo {
  font-weight: 800;
  letter-spacing: .1em;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.footer-copy   { font-size: 13px; color: var(--text2); }
.footer-rights { font-size: 12px; color: var(--text2); opacity: .6; }

/* ── Modal ────────────────────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.7);
  backdrop-filter: blur(6px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  animation: fade-in .2s ease;
}
@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }

.modal {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 36px;
  max-width: 600px;
  width: 100%;
  max-height: 80vh;
  overflow-y: auto;
  position: relative;
  animation: modal-in .25s ease;
}
@keyframes modal-in {
  from { opacity: 0; transform: translateY(20px) scale(.97); }
  to   { opacity: 1; transform: translateY(0)    scale(1); }
}

.modal-close {
  position: absolute;
  top: 16px; right: 16px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text2);
  font-size: 14px;
  padding: 4px 10px;
  transition: all var(--trans);
}
.modal-close:hover { color: var(--text); border-color: var(--text); }

.modal-icon   { font-size: 36px; margin-bottom: 12px; }
.modal h3     { font-size: 22px; font-weight: 800; margin-bottom: 8px; }
.modal-status { margin-bottom: 16px; }
.modal-desc   { color: var(--text2); line-height: 1.8; margin-bottom: 24px; }

.modal-section { margin-bottom: 20px; }
.modal-section h4 {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--accent);
  margin-bottom: 10px;
}

.tag-list { display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 12px;
  font-weight: 500;
  padding: 4px 12px;
  color: var(--text2);
}

.vlan-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.vlan-table th, .vlan-table td {
  padding: 8px 12px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
.vlan-table th { color: var(--text2); font-weight: 600; font-size: 11px; text-transform: uppercase; }
.vlan-table tr:last-child td { border-bottom: none; }

/* ── Responsive ───────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .nav-links  { display: none; }
  .mobile-only { display: flex; }

  .hero-stats { gap: 16px; padding: 16px 20px; }
  .stat-val   { font-size: 22px; }

  .about-grid   { grid-template-columns: 1fr; gap: 32px; }
  .contact-grid { grid-template-columns: 1fr; }
  .form-row     { grid-template-columns: 1fr; }
  .skills-grid  { grid-template-columns: 1fr 1fr; }

  .section { padding: 64px 0; }
}

@media (max-width: 480px) {
  .hero-actions { flex-direction: column; width: 100%; }
  .btn-primary, .btn-ghost { text-align: center; }
  .skills-grid { grid-template-columns: 1fr; }
}