/* ============================================================
   davdev88.com — Main Stylesheet
   Stack: PHP 8.1 | HTML5 | CSS3 | Vanilla JS
   ============================================================ */

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

:root {
  --bg:       #090d18;
  --bg2:      #0f1623;
  --bg3:      #161f30;
  --bg4:      #1c2840;
  --accent:   #00d4ff;
  --accent2:  #7c3aed;
  --accent3:  #10b981;
  --text:     #e2e8f0;
  --muted:    #94a3b8;
  --border:   rgba(0,212,255,0.12);
  --border2:  rgba(255,255,255,0.06);
  --radius:   10px;
  --radius-lg:16px;
  --font-sans:'Sora', system-ui, sans-serif;
  --font-mono:'JetBrains Mono', monospace;
  --max-w:    960px;
  --transition:0.2s ease;
}

html { scroll-behavior: smooth }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none }
img { max-width: 100%; display: block }

/* ── SKIP LINK ── */
.skip-link {
  position: absolute; top:-40px; left:0; background:var(--accent);
  color:#090d18; padding:8px 16px; font-weight:500; z-index:9999;
  border-radius:0 0 var(--radius) 0; transition:top .2s;
}
.skip-link:focus { top:0 }

/* ── NAVBAR ── */
.navbar {
  position: sticky; top:0; z-index:200;
  background: rgba(9,13,24,0.90);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: var(--max-w); margin: 0 auto;
  padding: 0 24px; height: 62px;
  display: flex; align-items: center; gap:16px;
}
.logo {
  font-family: var(--font-mono); font-size:15px; font-weight:500;
  display:flex; align-items:center; gap:8px; margin-right:auto;
}
.logo-dot {
  width:8px; height:8px; border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 10px var(--accent);
  animation: blink 2.5s infinite;
}
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:.25} }
.accent { color: var(--accent) }

.nav-links {
  display: flex; gap:2px; list-style:none;
}
.nav-links a {
  padding: 7px 14px; border-radius:7px;
  font-size: 13px; color: var(--muted);
  transition: all var(--transition);
}
.nav-links a:hover, .nav-links a.active {
  color: var(--accent);
  background: rgba(0,212,255,0.07);
}
.nav-cta {
  background: var(--accent); color:#090d18;
  font-size:13px; font-weight:600;
  padding: 8px 18px; border-radius:7px;
  white-space:nowrap; transition:all var(--transition);
}
.nav-cta:hover { background:#22dfff; transform:translateY(-1px) }

/* hamburger */
.nav-toggle {
  display:none; background:none; border:1px solid var(--border2);
  color:var(--muted); width:38px; height:38px; border-radius:7px;
  cursor:pointer; font-size:18px; align-items:center; justify-content:center;
}

/* ── PAGE HERO ── */
.page-hero {
  padding: 96px 24px 72px;
  max-width: var(--max-w); margin:0 auto;
}
.badge {
  display:inline-flex; align-items:center; gap:8px;
  background: rgba(0,212,255,0.07);
  border:1px solid rgba(0,212,255,0.18);
  border-radius:20px; padding:5px 14px;
  font-family:var(--font-mono); font-size:11px; color:var(--accent);
  margin-bottom:24px;
}
.badge-dot {
  width:6px; height:6px; border-radius:50%;
  background:var(--accent); animation:blink 2s infinite;
}
.page-hero h1 {
  font-size: clamp(28px,5vw,46px); font-weight:600;
  line-height:1.18; margin-bottom:18px; color:#f1f5f9;
  letter-spacing:-0.02em;
}
.page-hero p {
  font-size:16px; color:var(--muted); max-width:520px; margin-bottom:36px;
}
.btn-row { display:flex; gap:12px; flex-wrap:wrap }
.btn-primary {
  background:var(--accent); color:#090d18; font-weight:600;
  padding:12px 24px; border-radius:var(--radius); font-size:14px;
  border:none; cursor:pointer; transition:all var(--transition);
  font-family:var(--font-sans);
}
.btn-primary:hover { background:#22dfff; transform:translateY(-1px) }
.btn-ghost {
  background:transparent; color:var(--text);
  padding:12px 24px; border-radius:var(--radius); font-size:14px;
  border:1px solid var(--border2); cursor:pointer;
  transition:all var(--transition); font-family:var(--font-sans);
}
.btn-ghost:hover { border-color:var(--accent); color:var(--accent) }

/* stats */
.hero-stats {
  display:flex; gap:32px; flex-wrap:wrap;
  margin-top:48px; padding-top:32px;
  border-top:1px solid var(--border2);
}
.stat-n { font-size:24px; font-weight:600; color:var(--accent); font-family:var(--font-mono) }
.stat-l { font-size:12px; color:var(--muted); margin-top:2px }

/* ── TECH STRIP ── */
.tech-strip {
  border-top:1px solid var(--border2); border-bottom:1px solid var(--border2);
  background:var(--bg2); padding:18px 24px;
  display:flex; flex-wrap:wrap; gap:24px;
  justify-content:center; align-items:center;
}
.tech-item {
  display:flex; align-items:center; gap:7px;
  font-size:12px; color:var(--muted); font-family:var(--font-mono);
}
.tech-item i { color:var(--accent); font-size:15px }

/* ── SECTION ── */
section { padding:72px 24px; max-width:var(--max-w); margin:0 auto }
.section-header { text-align:center; margin-bottom:48px }
.section-tag {
  display:inline-block;
  background:rgba(124,58,237,0.08);
  border:1px solid rgba(124,58,237,0.2);
  color:#a78bfa;
  font-family:var(--font-mono); font-size:11px;
  padding:4px 13px; border-radius:20px; margin-bottom:14px;
}
.section-header h2 {
  font-size:clamp(22px,4vw,30px); font-weight:600;
  color:#f1f5f9; margin-bottom:12px; letter-spacing:-0.01em;
}
.section-header p { color:var(--muted); max-width:460px; margin:0 auto; font-size:14px }

/* ── GRID ── */
.grid-3 { display:grid; grid-template-columns:repeat(auto-fit,minmax(260px,1fr)); gap:16px }
.grid-2 { display:grid; grid-template-columns:repeat(auto-fit,minmax(300px,1fr)); gap:16px }

/* ── CARD ── */
.card {
  background:var(--bg3); border:1px solid var(--border2);
  border-radius:var(--radius-lg); padding:28px 24px;
  transition:all var(--transition);
}
.card:hover { border-color:rgba(0,212,255,0.25); transform:translateY(-3px) }
.card-icon {
  width:44px; height:44px; border-radius:10px;
  display:flex; align-items:center; justify-content:center;
  margin-bottom:18px; font-size:20px;
}
.ic-blue   { background:rgba(0,212,255,0.10);  color:var(--accent) }
.ic-purple { background:rgba(124,58,237,0.10); color:#a78bfa }
.ic-green  { background:rgba(16,185,129,0.10); color:#34d399 }
.ic-amber  { background:rgba(245,158,11,0.10); color:#fbbf24 }
.card h3 { font-size:15px; font-weight:500; color:#f1f5f9; margin-bottom:8px }
.card p  { font-size:13px; color:var(--muted); line-height:1.6 }
.card-tags { display:flex; flex-wrap:wrap; gap:6px; margin-top:16px }
.tag {
  background:var(--bg4); color:var(--muted);
  font-family:var(--font-mono); font-size:11px;
  padding:3px 10px; border-radius:20px;
  border:1px solid var(--border2);
}

/* ── SUPPORT ITEMS ── */
.support-item {
  background:var(--bg3); border:1px solid var(--border2);
  border-radius:var(--radius); padding:22px 20px;
  display:flex; gap:16px; align-items:flex-start;
  transition:border-color var(--transition);
}
.support-item:hover { border-color:rgba(0,212,255,0.25) }
.support-num {
  font-family:var(--font-mono); font-size:11px; font-weight:500;
  color:var(--accent);
  background:rgba(0,212,255,0.07); border:1px solid rgba(0,212,255,0.15);
  width:30px; height:30px; border-radius:7px;
  display:flex; align-items:center; justify-content:center; flex-shrink:0;
}
.support-content h3 { font-size:14px; font-weight:500; color:#f1f5f9; margin-bottom:4px }
.support-content p  { font-size:13px; color:var(--muted) }

/* ── CONSULT CARDS ── */
.consult-card {
  background:var(--bg3); border:1px solid var(--border2);
  border-radius:var(--radius-lg); padding:28px 24px;
  position:relative; overflow:hidden;
}
.consult-card::before {
  content:''; position:absolute; top:0; left:0; right:0; height:2px;
}
.tier1::before { background:var(--accent) }
.tier2::before { background:#a78bfa }
.tier3::before { background:#34d399 }
.tier-badge {
  font-family:var(--font-mono); font-size:11px; font-weight:500;
  padding:4px 11px; border-radius:20px;
  display:inline-block; margin-bottom:14px;
}
.tier1 .tier-badge { background:rgba(0,212,255,0.07);  color:var(--accent); border:1px solid rgba(0,212,255,0.2) }
.tier2 .tier-badge { background:rgba(124,58,237,0.07); color:#a78bfa;       border:1px solid rgba(124,58,237,0.2) }
.tier3 .tier-badge { background:rgba(16,185,129,0.07); color:#34d399;       border:1px solid rgba(16,185,129,0.2) }
.consult-card h3 { font-size:16px; font-weight:500; color:#f1f5f9; margin-bottom:8px }
.consult-card > p { font-size:13px; color:var(--muted); margin-bottom:18px }
.feat-list { list-style:none; display:flex; flex-direction:column; gap:8px }
.feat-list li { font-size:13px; color:var(--muted); display:flex; align-items:center; gap:8px }
.feat-list li::before { content:'✓'; color:#34d399; font-size:13px; flex-shrink:0 }
.consult-price {
  margin-top:20px; padding-top:16px;
  border-top:1px solid var(--border2);
  font-size:13px; color:var(--muted);
}
.consult-price strong { font-size:20px; font-weight:600; color:#f1f5f9; font-family:var(--font-mono) }

/* ── CONTACT ── */
.contact-grid {
  display:grid; grid-template-columns:1fr 1.6fr; gap:32px; align-items:start;
}
.contact-info-list { display:flex; flex-direction:column; gap:14px }
.ci-item {
  background:var(--bg3); border:1px solid var(--border2);
  border-radius:var(--radius); padding:16px;
  display:flex; align-items:flex-start; gap:14px;
}
.ci-icon {
  width:36px; height:36px; border-radius:8px;
  display:flex; align-items:center; justify-content:center;
  font-size:16px; flex-shrink:0;
}
.ci-title { font-size:13px; font-weight:500; color:#f1f5f9; margin-bottom:2px }
.ci-val   { font-size:12px; color:var(--muted) }

/* form */
.form-card {
  background:var(--bg3); border:1px solid var(--border2);
  border-radius:var(--radius-lg); padding:28px 24px;
}
.form-row { display:grid; grid-template-columns:1fr 1fr; gap:14px }
.form-group { display:flex; flex-direction:column; gap:6px; margin-bottom:14px }
.form-group label { font-size:12px; color:var(--muted); font-weight:500 }
.form-group input,
.form-group textarea,
.form-group select {
  background:var(--bg); border:1px solid var(--border2);
  border-radius:8px; color:var(--text);
  font-size:13px; padding:10px 13px;
  font-family:var(--font-sans); width:100%;
  transition:border-color var(--transition); outline:none;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color:var(--accent);
  box-shadow:0 0 0 3px rgba(0,212,255,0.08);
}
.form-group select option { background:var(--bg2) }
.form-group textarea { resize:vertical; min-height:110px }
.form-error { font-size:11px; color:#f87171; margin-top:4px; display:none }
.field-error input, .field-error textarea, .field-error select {
  border-color:#f87171 !important;
}
.field-error .form-error { display:block }
.form-success {
  background:rgba(16,185,129,0.08); border:1px solid rgba(16,185,129,0.2);
  border-radius:var(--radius); padding:16px; margin-bottom:16px;
  color:#34d399; font-size:14px; display:none;
}
.btn-submit {
  width:100%; background:var(--accent); color:#090d18;
  font-weight:600; padding:13px; border-radius:var(--radius);
  font-size:14px; border:none; cursor:pointer;
  transition:all var(--transition); font-family:var(--font-sans);
  display:flex; align-items:center; justify-content:center; gap:8px;
}
.btn-submit:hover { background:#22dfff; transform:translateY(-1px) }
.btn-submit:disabled { opacity:.6; cursor:not-allowed; transform:none }
.form-note { font-size:11px; color:var(--muted); text-align:center; margin-top:12px }

/* ── DIVIDER ── */
.divider { width:100%; height:1px; background:var(--border2); max-width:var(--max-w); margin:0 auto }

/* ── ALERT ── */
.alert {
  padding:14px 18px; border-radius:var(--radius);
  font-size:14px; margin-bottom:20px;
}
.alert-success { background:rgba(16,185,129,0.08); border:1px solid rgba(16,185,129,0.2); color:#34d399 }
.alert-error   { background:rgba(248,113,113,0.08); border:1px solid rgba(248,113,113,0.2); color:#f87171 }

/* ── FOOTER ── */
.site-footer {
  background:var(--bg2); border-top:1px solid var(--border2);
  padding:36px 24px; text-align:center;
}
.footer-inner { max-width:var(--max-w); margin:0 auto }
.footer-brand {
  font-family:var(--font-mono); font-size:16px;
  font-weight:500; color:var(--text); margin-bottom:16px;
}
.footer-social { display:flex; justify-content:center; gap:10px; margin-bottom:20px }
.social-btn {
  width:36px; height:36px; border-radius:8px;
  background:var(--bg3); border:1px solid var(--border2);
  display:flex; align-items:center; justify-content:center;
  color:var(--muted); font-size:16px;
  transition:all var(--transition);
}
.social-btn:hover { border-color:var(--accent); color:var(--accent) }
.footer-nav { display:flex; justify-content:center; gap:20px; flex-wrap:wrap; margin-bottom:16px }
.footer-nav a { font-size:13px; color:var(--muted); transition:color var(--transition) }
.footer-nav a:hover { color:var(--accent) }
.footer-copy { font-size:12px; color:var(--muted) }

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
  .nav-links, .nav-cta { display:none }
  .nav-toggle { display:flex }
  .nav-links.open {
    display:flex; flex-direction:column;
    position:absolute; top:62px; left:0; right:0;
    background:var(--bg2); border-bottom:1px solid var(--border2);
    padding:12px 16px; gap:4px;
  }
  .nav-links.open ~ .nav-cta { display:none }
  .contact-grid { grid-template-columns:1fr }
  .form-row { grid-template-columns:1fr }
  .hero-stats { gap:20px }
}
@media (max-width:480px) {
  .page-hero { padding:64px 16px 48px }
  section { padding:48px 16px }
}

/* ── SCROLL ANIMATIONS ── */
.fade-up {
  opacity:0; transform:translateY(20px);
  transition:opacity .5s ease, transform .5s ease;
}
.fade-up.visible { opacity:1; transform:translateY(0) }

@media (prefers-reduced-motion:reduce) {
  .fade-up { opacity:1; transform:none }
  * { animation:none !important; transition:none !important }
}

/* ============================================================
   TERMINAL WIDGET
   ============================================================ */
.hero-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  padding: 96px 24px 72px;
  max-width: var(--max-w);
  margin: 0 auto;
}
.hero-content .btn-row { margin-top: 0 }

.terminal-wrap {
  background: #0d1117;
  border: 1px solid rgba(0,212,255,0.15);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 0 40px rgba(0,212,255,0.06), 0 20px 60px rgba(0,0,0,0.5);
  font-family: var(--font-mono);
}
.terminal-chrome {
  background: #161b22;
  padding: 10px 16px;
  display: flex;
  align-items: center;
  gap: 7px;
  border-bottom: 1px solid rgba(255,255,255,0.05);
}
.dot {
  width: 12px; height: 12px;
  border-radius: 50%;
  flex-shrink: 0;
}
.dot-red    { background: #ff5f57 }
.dot-yellow { background: #ffbd2e }
.dot-green  { background: #28c840 }
.terminal-title {
  font-size: 11px;
  color: #4a5568;
  margin-left: auto;
  margin-right: auto;
  letter-spacing: 0.03em;
}
.terminal-body {
  padding: 20px 22px;
  min-height: 200px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.tl {
  font-size: 13px;
  line-height: 1.5;
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 6px;
}
.tc-arrow { color: #4a5568; font-size: 12px; flex-shrink: 0 }
.tc-label { color: #e2e8f0 }
.tc-cyan  { color: #00d4ff }
.tc-green { color: #10b981 }

/* blinking block cursor */
.tcursor {
  color: #00d4ff;
  animation: cur-blink 1s step-end infinite;
  font-size: 12px;
  line-height: 1;
}
@keyframes cur-blink {
  0%,100% { opacity: 1 }
  50%      { opacity: 0 }
}

/* responsive: stack on mobile */
@media (max-width: 768px) {
  .hero-split {
    grid-template-columns: 1fr;
    padding: 64px 16px 48px;
    gap: 32px;
  }
}

/* ============================================================
   FLUTTER / FIREBASE SECTION
   ============================================================ */
.flutter-section { padding: 72px 24px; max-width: var(--max-w); margin: 0 auto }

.flutter-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}
.flutter-text h2 {
  font-size: clamp(22px,3.5vw,30px);
  font-weight: 600;
  color: #f1f5f9;
  margin: 12px 0;
  letter-spacing: -0.01em;
}
.flutter-text p { color: var(--muted); font-size: 14px; line-height: 1.7; margin-bottom: 20px }

.flutter-feats {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.flutter-feats li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--muted);
}
.flutter-feats li i { color: #10b981; font-size: 15px; flex-shrink: 0 }

.flutter-stack {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.stack-card {
  background: var(--bg3);
  border: 1px solid var(--border2);
  border-radius: var(--radius);
  padding: 16px 18px;
  display: flex;
  align-items: center;
  gap: 16px;
  transition: border-color var(--transition);
}
.stack-card:hover { border-color: rgba(0,212,255,0.25) }
.stack-icon {
  width: 42px; height: 42px;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; flex-shrink: 0;
}
.stack-name { font-size: 14px; font-weight: 500; color: #f1f5f9; margin-bottom: 2px }
.stack-desc { font-size: 12px; color: var(--muted) }

@media (max-width: 768px) {
  .flutter-grid { grid-template-columns: 1fr }
}

/* ============================================================
   TOOLS GRID (server-management)
   ============================================================ */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 10px;
}
.tool-chip {
  background: var(--bg3);
  border: 1px solid var(--border2);
  border-radius: var(--radius);
  padding: 12px 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  transition: border-color var(--transition), transform var(--transition);
}
.tool-chip:hover { transform: translateY(-2px) }
.tool-name { font-size: 13px; font-weight: 500; color: #f1f5f9 }
.tool-cat  { font-size: 11px; color: var(--muted); font-family: var(--font-mono) }

.ic-blue-chip   { border-left: 2px solid var(--accent) }
.ic-green-chip  { border-left: 2px solid #10b981 }
.ic-purple-chip { border-left: 2px solid #a78bfa }
.ic-amber-chip  { border-left: 2px solid #fbbf24 }

/* support-num with icon (server-management page) */
.support-num.ic-blue   { background:rgba(0,212,255,0.10);  color:var(--accent);  border-color:rgba(0,212,255,0.18) }
.support-num.ic-green  { background:rgba(16,185,129,0.10); color:#10b981;        border-color:rgba(16,185,129,0.18) }
.support-num.ic-purple { background:rgba(124,58,237,0.10); color:#a78bfa;        border-color:rgba(124,58,237,0.18) }
.support-num.ic-amber  { background:rgba(245,158,11,0.10); color:#fbbf24;        border-color:rgba(245,158,11,0.18) }

/* ── Nav CTA active state ── */
.nav-cta-active {
  background: #22dfff;
}