/* ══════════════════════════════════════════════════════
   DARK MODE (default)
   ══════════════════════════════════════════════════════ */
:root {
  --bg: #07080f;
  --bg2: #0d0f1a;
  --bg3: #141624;
  --border: rgba(255,255,255,0.07);
  --border2: rgba(255,255,255,0.13);
  --text: #eef0f5;
  --muted: #d0d5e4;
  --accent-green: #00e5a0;
  --accent-blue: #3d9eff;
  --accent-purple: #a855f7;
  --accent-orange: #ff7c2a;
  --accent-pink: #ff4d9e;
  --card-on: #0a1a2e;
  --card-cloud: #120b22;
  --green-glow: rgba(0,229,160,0.15);
  --blue-glow: rgba(61,158,255,0.15);
  --purple-glow: rgba(168,85,247,0.15);
  --nav-bg: rgba(7,8,15,0.85);
  --hover-bg: rgba(255,255,255,0.05);
  --grid-line: rgba(255,255,255,0.025);
  --code-bg: rgba(0,0,0,0.3);
  --table-hover: rgba(255,255,255,0.015);
  --shadow-glow: rgba(255,255,255,0.05);
  --td-on: #a0f0d0;
  --td-cloud: #c4a0f7;
  --h1-from: #eef0f5;
  --h1-to: #c0c6d8;
  --toggle-bg: rgba(255,255,255,0.08);
  --toggle-hover: rgba(255,255,255,0.15);
}

/* ══════════════════════════════════════════════════════
   LIGHT MODE
   ══════════════════════════════════════════════════════ */
[data-theme="light"] {
  --bg: #f6f7fb;
  --bg2: #eceef4;
  --bg3: #e0e3ec;
  --border: rgba(0,0,0,0.08);
  --border2: rgba(0,0,0,0.15);
  --text: #1a1d2b;
  --muted: #4a5068;
  --accent-green: #00b37e;
  --accent-blue: #2b7fd4;
  --accent-purple: #8b3fd4;
  --accent-orange: #d4610e;
  --accent-pink: #d4356e;
  --card-on: #e6f5ef;
  --card-cloud: #ede6f5;
  --green-glow: rgba(0,179,126,0.1);
  --blue-glow: rgba(43,127,212,0.1);
  --purple-glow: rgba(139,63,212,0.1);
  --nav-bg: rgba(246,247,251,0.88);
  --hover-bg: rgba(0,0,0,0.04);
  --grid-line: rgba(0,0,0,0.04);
  --code-bg: rgba(0,0,0,0.05);
  --table-hover: rgba(0,0,0,0.02);
  --shadow-glow: rgba(0,0,0,0.06);
  --td-on: #0a7b52;
  --td-cloud: #6b3fa0;
  --h1-from: #1a1d2b;
  --h1-to: #3a4060;
  --toggle-bg: rgba(0,0,0,0.06);
  --toggle-hover: rgba(0,0,0,0.12);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
html:not([data-theme="light"]) { color-scheme: dark; }
[data-theme="light"] { color-scheme: light; }

body {
  font-family: 'DM Sans', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
  transition: background 0.35s, color 0.35s;
}

/* ─── NAV ─── */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: var(--nav-bg);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  padding: 0 2rem;
  display: flex; align-items: center; justify-content: space-between;
  height: 60px;
  transition: background 0.35s, border-color 0.35s;
}
.logo { font-family: 'Playfair Display', serif; font-size: 1.1rem; letter-spacing: 0.02em; color: var(--text); }
.logo span { color: var(--accent-green); }
.nav-tabs { display: flex; gap: 4px; }
.nav-tab {
  padding: 6px 16px; border-radius: 6px; font-size: 0.82rem; font-weight: 500;
  cursor: pointer; border: none; background: transparent; color: var(--muted);
  transition: all 0.2s; letter-spacing: 0.02em;
}
.nav-tab:hover { color: var(--text); background: var(--hover-bg); }
.nav-tab.active { color: #07080f; background: var(--accent-green); }
[data-theme="light"] .nav-tab.active { color: #fff; }
.nav-right { display: flex; gap: 8px; align-items: center; }
.nav-tags { display: flex; gap: 8px; }
.tag {
  font-size: 0.72rem; font-family: 'DM Mono', monospace; font-weight: 500;
  padding: 4px 10px; border-radius: 4px; letter-spacing: 0.05em;
}
.tag-on { background: rgba(0,229,160,0.12); color: var(--accent-green); border: 1px solid rgba(0,229,160,0.25); }
.tag-cloud { background: rgba(168,85,247,0.12); color: var(--accent-purple); border: 1px solid rgba(168,85,247,0.25); }

/* ─── THEME TOGGLE ─── */
.theme-toggle {
  width: 38px; height: 38px; border-radius: 8px;
  border: 1px solid var(--border2); background: var(--toggle-bg);
  cursor: pointer; display: flex; align-items: center; justify-content: center;
  transition: all 0.25s; color: var(--text); font-size: 1.1rem;
  flex-shrink: 0; padding: 0;
}
.theme-toggle:hover { background: var(--toggle-hover); transform: scale(1.05); }
.theme-toggle .icon-sun { display: none; }
.theme-toggle .icon-moon { display: block; }
[data-theme="light"] .theme-toggle .icon-sun { display: block; }
[data-theme="light"] .theme-toggle .icon-moon { display: none; }

/* ─── HERO ─── */
.hero {
  min-height: 100vh;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: 80px 2rem 4rem;
  position: relative; overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(ellipse 60% 50% at 20% 50%, rgba(0,229,160,0.06) 0%, transparent 70%),
    radial-gradient(ellipse 60% 50% at 80% 50%, rgba(168,85,247,0.06) 0%, transparent 70%);
}
[data-theme="light"] .hero-bg {
  background:
    radial-gradient(ellipse 60% 50% at 20% 50%, rgba(0,179,126,0.08) 0%, transparent 70%),
    radial-gradient(ellipse 60% 50% at 80% 50%, rgba(139,63,212,0.08) 0%, transparent 70%);
}
.hero-grid {
  position: absolute; inset: 0; pointer-events: none;
  background-image: linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 48px 48px;
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 50%, black 30%, transparent 80%);
  mask-image: radial-gradient(ellipse 80% 60% at 50% 50%, black 30%, transparent 80%);
}
.hero-content { position: relative; text-align: center; max-width: 860px; }
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 0.75rem; font-family: 'DM Mono', monospace; letter-spacing: 0.1em;
  color: var(--muted); text-transform: uppercase; margin-bottom: 1.5rem;
  padding: 6px 14px; border: 1px solid var(--border2); border-radius: 99px;
}
.hero-eyebrow::before {
  content: ''; width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent-green);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:0.5;transform:scale(0.8)} }
h1 {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2.2rem, 5vw, 4rem);
  line-height: 1.1; font-weight: 700;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, var(--h1-from) 0%, var(--h1-to) 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.hero-vs {
  display: flex; align-items: center; justify-content: center; gap: 1.5rem;
  margin-bottom: 1rem; flex-wrap: wrap;
}
.hero-pill {
  padding: 10px 24px; border-radius: 8px; font-weight: 600; font-size: 1rem;
  letter-spacing: 0.02em;
}
.pill-on { background: rgba(0,229,160,0.1); border: 1px solid rgba(0,229,160,0.3); color: var(--accent-green); }
.pill-cloud { background: rgba(168,85,247,0.1); border: 1px solid rgba(168,85,247,0.3); color: var(--accent-purple); }
.vs-badge {
  font-family: 'Playfair Display', serif; font-size: 1.5rem; color: var(--muted);
}
.hero-sub {
  font-size: 1.05rem; color: var(--muted); line-height: 1.7; max-width: 580px; margin: 0 auto 2.5rem;
}
.hero-cta {
  display: flex; gap: 12px; justify-content: center; flex-wrap: wrap;
}
.btn {
  padding: 12px 28px; border-radius: 8px; font-size: 0.9rem; font-weight: 600;
  cursor: pointer; border: none; transition: all 0.25s; letter-spacing: 0.02em;
  text-decoration: none; display: inline-block;
}
.btn-primary { background: var(--accent-green); color: #07080f; }
[data-theme="light"] .btn-primary { color: #fff; }
.btn-primary:hover { filter: brightness(1.12); transform: translateY(-1px); }
.btn-outline {
  background: transparent; color: var(--text);
  border: 1px solid var(--border2);
}
.btn-outline:hover { background: var(--hover-bg); transform: translateY(-1px); }

/* ─── SECTIONS ─── */
.section { padding: 3.5rem 2rem; max-width: 1200px; margin: 0 auto; }
.section-label {
  font-size: 0.72rem; font-family: 'DM Mono', monospace; text-transform: uppercase;
  letter-spacing: 0.12em; color: var(--muted); margin-bottom: 0.75rem;
}
.section-title {
  font-family: 'Playfair Display', serif;
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 700; line-height: 1.2; margin-bottom: 1rem;
}
.section-desc { color: var(--muted); font-size: 1rem; line-height: 1.7; max-width: 600px; margin-bottom: 2.5rem; }

/* ─── TWO-COL COMPARE ─── */
.compare-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 1.5px;
  border: 1px solid var(--border); border-radius: 16px; overflow: hidden;
  background: var(--border);
}
.compare-col {
  background: var(--bg2); padding: 2rem;
  opacity: 0; transform: translateY(20px);
  transition: opacity 0.5s, transform 0.5s;
}
.compare-col.visible { opacity: 1; transform: none; }
.compare-col:first-child { background: var(--card-on); }
.compare-col:last-child { background: var(--card-cloud); }
.col-header {
  display: flex; align-items: center; gap: 10px; margin-bottom: 1.5rem;
  padding-bottom: 1.5rem; border-bottom: 1px solid var(--border);
}
.col-icon {
  width: 42px; height: 42px; border-radius: 10px;
  display: flex; align-items: center; justify-content: center; font-size: 1.3rem;
  flex-shrink: 0;
}
.icon-on { background: rgba(0,229,160,0.12); }
.icon-cloud { background: rgba(168,85,247,0.12); }
.col-title { font-size: 1.1rem; font-weight: 600; }
.col-sub { font-size: 0.8rem; color: var(--muted); margin-top: 2px; }

/* ─── LAYER CARDS ─── */
.layer-stack { display: flex; flex-direction: column; gap: 8px; }
.layer {
  border-radius: 8px; padding: 10px 14px;
  border: 1px solid var(--border);
  cursor: default; transition: all 0.2s;
  position: relative; overflow: hidden;
}
.layer::before {
  content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 3px;
}
.layer:hover { border-color: var(--border2); transform: translateX(3px); }
.layer-on::before { background: var(--accent-green); }
.layer-cloud::before { background: var(--accent-purple); }
.layer-name { font-size: 0.85rem; font-weight: 600; margin-bottom: 2px; }
.layer-desc { font-size: 0.76rem; color: var(--muted); line-height: 1.5; }
.layer-tech {
  display: flex; flex-wrap: wrap; gap: 4px; margin-top: 6px;
}
.chip {
  font-size: 0.67rem; font-family: 'DM Mono', monospace; font-weight: 500;
  padding: 2px 7px; border-radius: 3px; letter-spacing: 0.04em;
}
.chip-green { background: rgba(0,229,160,0.1); color: var(--accent-green); }
.chip-blue { background: rgba(61,158,255,0.1); color: var(--accent-blue); }
.chip-purple { background: rgba(168,85,247,0.1); color: var(--accent-purple); }
.chip-orange { background: rgba(255,124,42,0.1); color: var(--accent-orange); }
.chip-pink { background: rgba(255,77,158,0.1); color: var(--accent-pink); }

/* ─── ARCH DIAGRAM ─── */
.arch-section { padding: 3.5rem 2rem; background: var(--bg2); transition: background 0.35s; }
.arch-inner { max-width: 1200px; margin: 0 auto; }
.arch-tabs { display: flex; gap: 8px; margin-bottom: 2rem; }
.arch-tab {
  padding: 8px 20px; border-radius: 8px; font-size: 0.85rem; font-weight: 600;
  cursor: pointer; border: 1px solid var(--border); background: transparent;
  color: var(--muted); transition: all 0.2s;
}
.arch-tab.active-on { border-color: rgba(0,229,160,0.4); color: var(--accent-green); background: rgba(0,229,160,0.07); }
.arch-tab.active-cloud { border-color: rgba(168,85,247,0.4); color: var(--accent-purple); background: rgba(168,85,247,0.07); }
.arch-diagram {
  border: 1px solid var(--border); border-radius: 16px;
  overflow: hidden; background: var(--bg); transition: background 0.35s;
}
.arch-canvas { padding: 2rem; position: relative; min-height: 520px; }

/* Flow Diagram */
.flow-diagram { display: flex; flex-direction: column; gap: 0; }
.flow-row {
  display: flex; align-items: center; justify-content: center;
  gap: 0; flex-wrap: wrap; padding: 0.5rem 0;
}
.flow-node {
  position: relative;
  border-radius: 10px; padding: 14px 20px; min-width: 140px; text-align: center;
  border: 1px solid var(--border); background: var(--bg2);
  opacity: 0; transform: translateY(12px);
  transition: opacity 0.4s, transform 0.4s, box-shadow 0.2s, border-color 0.2s, background 0.35s;
  cursor: default;
}
.flow-node:hover { box-shadow: 0 0 20px var(--shadow-glow); border-color: var(--border2); }
.flow-node.visible { opacity: 1; transform: none; }
.flow-node-title { font-size: 0.82rem; font-weight: 600; margin-bottom: 3px; }
.flow-node-sub { font-size: 0.7rem; color: var(--muted); }
.fn-green { border-color: rgba(0,229,160,0.25); background: rgba(0,229,160,0.04); }
.fn-green .flow-node-title { color: var(--accent-green); }
.fn-blue { border-color: rgba(61,158,255,0.25); background: rgba(61,158,255,0.04); }
.fn-blue .flow-node-title { color: var(--accent-blue); }
.fn-purple { border-color: rgba(168,85,247,0.25); background: rgba(168,85,247,0.04); }
.fn-purple .flow-node-title { color: var(--accent-purple); }
.fn-orange { border-color: rgba(255,124,42,0.25); background: rgba(255,124,42,0.04); }
.fn-orange .flow-node-title { color: var(--accent-orange); }
.fn-pink { border-color: rgba(255,77,158,0.25); background: rgba(255,77,158,0.04); }
.fn-pink .flow-node-title { color: var(--accent-pink); }

.arrow-h {
  width: 40px; height: 2px; background: var(--border2);
  position: relative; flex-shrink: 0;
}
.arrow-h::after {
  content: ''; position: absolute; right: -1px; top: -4px;
  border-left: 7px solid var(--border2);
  border-top: 5px solid transparent;
  border-bottom: 5px solid transparent;
}
.arrow-down {
  display: flex; justify-content: center; padding: 4px 0;
}
.arrow-down::before {
  content: ''; display: block; width: 2px; height: 28px; background: var(--border2);
  position: relative;
}
.arrow-down-tip {
  display: flex; justify-content: center;
}
.arrow-down-tip::before {
  content: '\25BC'; font-size: 0.6rem; color: var(--border2);
}

.flow-group {
  border: 1px dashed var(--border2); border-radius: 12px; padding: 16px;
  position: relative; margin: 0.5rem;
}
.flow-group-label {
  position: absolute; top: -10px; left: 16px;
  font-size: 0.65rem; font-family: 'DM Mono', monospace; letter-spacing: 0.08em;
  background: var(--bg); padding: 0 8px; color: var(--muted); text-transform: uppercase;
  transition: background 0.35s;
}
.flow-group-inner { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; justify-content: center; }

/* ─── SERVICES GRID ─── */
.services-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 16px;
}
.service-card {
  border: 1px solid var(--border); border-radius: 12px; padding: 1.5rem;
  background: var(--bg2); transition: all 0.25s;
  opacity: 0; transform: translateY(16px);
}
.service-card.visible { opacity: 1; transform: none; }
.service-card:hover { border-color: var(--border2); background: var(--bg3); transform: translateY(-3px); }
.sc-header { display: flex; align-items: center; gap: 10px; margin-bottom: 1rem; }
.sc-icon {
  width: 38px; height: 38px; border-radius: 8px;
  display: flex; align-items: center; justify-content: center; font-size: 1.1rem;
  flex-shrink: 0;
}
.sc-title { font-size: 0.95rem; font-weight: 600; }
.sc-provider { font-size: 0.73rem; color: var(--muted); margin-top: 2px; font-family: 'DM Mono', monospace; }
.sc-desc { font-size: 0.82rem; color: var(--muted); line-height: 1.6; margin-bottom: 1rem; }
.sc-features { list-style: none; display: flex; flex-direction: column; gap: 6px; }
.sc-features li {
  font-size: 0.79rem; color: var(--muted); padding-left: 14px; position: relative; line-height: 1.5;
}
.sc-features li::before {
  content: '\2192'; position: absolute; left: 0; color: var(--muted);
}

/* ─── HOW IT WORKS TIMELINE ─── */
.how-it-works-section { background: var(--bg2); padding: 3.5rem 2rem; transition: background 0.35s; }
.how-it-works-inner { max-width: 1200px; margin: 0 auto; }
.timeline-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; }
.timeline-header {
  margin-bottom: 1.5rem; padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 10px;
}
.timeline { display: flex; flex-direction: column; gap: 0; position: relative; }
.timeline::before {
  content: ''; position: absolute; left: 19px; top: 20px; bottom: 20px;
  width: 2px; background: linear-gradient(to bottom, var(--accent-green), transparent);
  opacity: 0.3;
}
.tl-item {
  display: flex; gap: 1.5rem; padding: 0 0 2rem 0;
  opacity: 0; transform: translateX(-16px);
  transition: opacity 0.5s, transform 0.5s;
}
.tl-item.visible { opacity: 1; transform: none; }
.tl-num {
  width: 40px; height: 40px; border-radius: 50%; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.8rem; font-weight: 700; font-family: 'DM Mono', monospace;
  position: relative; z-index: 1;
}
.tl-num-on { background: rgba(0,229,160,0.12); border: 2px solid rgba(0,229,160,0.4); color: var(--accent-green); }
.tl-num-cloud { background: rgba(168,85,247,0.12); border: 2px solid rgba(168,85,247,0.4); color: var(--accent-purple); }
.tl-body { flex: 1; padding-top: 8px; }
.tl-title { font-size: 0.95rem; font-weight: 600; margin-bottom: 4px; }
.tl-desc { font-size: 0.82rem; color: var(--muted); line-height: 1.7; }
.tl-code {
  margin-top: 10px; padding: 10px 14px; border-radius: 6px;
  background: var(--code-bg); border: 1px solid var(--border);
  font-size: 0.73rem; font-family: 'DM Mono', monospace; color: var(--accent-green);
  line-height: 1.6; overflow-x: auto;
}

/* ─── COMPARISON TABLE ─── */
.table-wrap {
  border: 1px solid var(--border); border-radius: 12px; overflow: hidden;
  background: var(--bg2); transition: background 0.35s;
}
.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.comp-table { width: 100%; border-collapse: collapse; min-width: 650px; }
.comp-table th {
  padding: 14px 18px; font-size: 0.8rem; font-weight: 600; text-align: left;
  background: var(--bg3); border-bottom: 1px solid var(--border);
  letter-spacing: 0.04em; text-transform: uppercase; color: var(--muted);
  white-space: nowrap; transition: background 0.35s;
}
.comp-table td {
  padding: 13px 18px; font-size: 0.84rem; border-bottom: 1px solid var(--border);
  vertical-align: top; line-height: 1.5;
}
.comp-table tr:last-child td { border-bottom: none; }
.comp-table tr:hover td { background: var(--table-hover); }
.td-category { font-weight: 600; color: var(--text); white-space: nowrap; }
.td-on { color: var(--td-on); }
.td-cloud { color: var(--td-cloud); }
.badge {
  display: inline-block; font-size: 0.68rem; padding: 2px 8px; border-radius: 3px;
  font-family: 'DM Mono', monospace; font-weight: 500; margin-top: 2px;
}
.badge-win { background: rgba(0,229,160,0.12); color: var(--accent-green); }
.badge-mid { background: rgba(255,124,42,0.12); color: var(--accent-orange); }
.badge-low { background: rgba(255,77,158,0.12); color: var(--accent-pink); }

/* ─── ANIMATED FLOW ─── */
.live-flow { position: relative; overflow: hidden; background: var(--bg); border-radius: 12px; border: 1px solid var(--border); padding: 2rem; min-height: 300px; }
.lf-node {
  position: absolute; border-radius: 8px; padding: 10px 16px;
  border: 1px solid; font-size: 0.78rem; font-weight: 600; text-align: center; min-width: 110px;
  transition: box-shadow 0.3s;
}
.lf-node.glow-on { box-shadow: 0 0 16px rgba(0,229,160,0.35); }
.lf-node.glow-cloud { box-shadow: 0 0 16px rgba(168,85,247,0.35); }
.packet {
  position: absolute; width: 10px; height: 10px; border-radius: 50%;
  pointer-events: none; transition: none;
}

/* ─── METRICS ─── */
.metrics-section { background: var(--bg2); padding: 3.5rem 2rem; transition: background 0.35s; }
.metrics-inner { max-width: 1200px; margin: 0 auto; }
.metrics-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; }
.metric-card {
  border-radius: 12px; padding: 1.5rem; border: 1px solid var(--border); background: var(--bg2);
  opacity: 0; transform: scale(0.96);
  transition: opacity 0.5s, transform 0.5s, background 0.35s;
}
.metric-card.visible { opacity: 1; transform: none; }
.metric-label { font-size: 0.75rem; color: var(--muted); margin-bottom: 8px; text-transform: uppercase; letter-spacing: 0.07em; font-family: 'DM Mono', monospace; }
.metric-val { font-size: 1.8rem; font-weight: 700; font-family: 'Playfair Display', serif; }
.metric-sub { font-size: 0.75rem; color: var(--muted); margin-top: 4px; }
.metric-bar { height: 4px; background: var(--border2); border-radius: 2px; margin-top: 12px; overflow: hidden; }
.metric-fill { height: 100%; border-radius: 2px; width: 0; transition: width 1.5s cubic-bezier(.2,.8,.2,1); }

/* ─── DECISION GUIDE ─── */
.decision-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.decision-card { border: 1px solid var(--border); border-radius: 12px; padding: 1.5rem; background: var(--bg2); transition: background 0.35s; }
.dc-head { display: flex; align-items: center; gap: 10px; margin-bottom: 1rem; padding-bottom: 1rem; border-bottom: 1px solid var(--border); }
.dc-icon-wrap {
  width: 38px; height: 38px; border-radius: 8px;
  display: flex; align-items: center; justify-content: center; font-size: 1.1rem;
  flex-shrink: 0;
}
.dc-title { font-size: 1rem; font-weight: 700; }
.use-case-list { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.use-case-list li { display: flex; gap: 8px; align-items: flex-start; font-size: 0.83rem; line-height: 1.6; }
.uc-icon { font-size: 1rem; flex-shrink: 0; margin-top: 2px; }

.hybrid-note {
  margin-top: 2rem; padding: 1.5rem 2rem;
  border: 1px solid var(--border2); border-radius: 12px;
  background: var(--bg2); display: flex; gap: 1rem; align-items: flex-start;
  transition: background 0.35s;
}
.hybrid-note-icon { font-size: 1.5rem; flex-shrink: 0; }
.hybrid-note-title { font-weight: 700; margin-bottom: 6px; font-size: 1rem; }
.hybrid-note-desc { font-size: 0.86rem; color: var(--muted); line-height: 1.7; }

/* ─── FOOTER ─── */
footer {
  border-top: 1px solid var(--border); padding: 2rem; text-align: center;
  color: var(--muted); font-size: 0.8rem;
  transition: border-color 0.35s;
}
.footer-brand { margin-bottom: 8px; font-family: 'Playfair Display', serif; font-size: 1rem; color: var(--text); }
.footer-brand span { color: var(--accent-green); }
.footer-desc { margin-bottom: 4px; }
.footer-note { font-size: 0.72rem; opacity: 0.6; }
.footer-copyright {
  margin-top: 12px; font-size: 0.75rem; color: var(--muted); opacity: 0.85;
}
.footer-copyright a {
  color: var(--accent-green); text-decoration: none;
  transition: color 0.2s;
}
.footer-copyright a:hover { color: #00ffb3; text-decoration: underline; }
[data-theme="light"] .footer-copyright a:hover { color: #009d6b; }

/* ─── ANIMATIONS ─── */
@keyframes float { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-6px)} }
@keyframes shimmer { 0%{opacity:0.4} 50%{opacity:1} 100%{opacity:0.4} }
@keyframes slideRight { from{transform:translateX(0)} to{transform:translateX(100%)} }
@keyframes fadeInUp { from{opacity:0;transform:translateY(20px)} to{opacity:1;transform:none} }
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0} }

.hero-content > * {
  animation: fadeInUp 0.7s ease backwards;
}
.hero-content > *:nth-child(1){animation-delay:0.1s}
.hero-content > *:nth-child(2){animation-delay:0.2s}
.hero-content > *:nth-child(3){animation-delay:0.3s}
.hero-content > *:nth-child(4){animation-delay:0.4s}
.hero-content > *:nth-child(5){animation-delay:0.5s}
.hero-content > *:nth-child(6){animation-delay:0.6s}

.scroll-hint {
  position: absolute; bottom: 2rem; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 6px; opacity: 0.4;
  font-size: 0.72rem; font-family: 'DM Mono', monospace; letter-spacing: 0.1em; color: var(--muted);
  animation: float 2s ease-in-out infinite;
}
.scroll-hint::before {
  content: ''; width: 1px; height: 30px; background: linear-gradient(to bottom, var(--muted), transparent);
}

/* ─── TABS PANEL ─── */
.tab-panel { display: none; }
.tab-panel.active { display: block; animation: fadeInUp 0.3s ease; }

/* ─── DATA FLOW ANIMATION ─── */
.dfa-wrap {
  border: 1px solid var(--border); border-radius: 12px; padding: 2rem;
  background: var(--bg2); position: relative; overflow: hidden;
}
.dfa-title { font-size: 0.75rem; font-family: 'DM Mono', monospace; color: var(--muted); margin-bottom: 1.5rem; text-transform: uppercase; letter-spacing: 0.08em; }
.pipe-line {
  height: 3px; border-radius: 2px; position: relative; overflow: hidden;
  background: var(--border); margin: 8px 0;
}
.pipe-fill {
  position: absolute; top: 0; left: -100%; height: 100%; width: 60%;
  border-radius: 2px;
  animation: pipeFlow 1.8s linear infinite;
}
@keyframes pipeFlow { from{left:-60%} to{left:100%} }
.pipe-green { background: linear-gradient(90deg, transparent, var(--accent-green), transparent); }
.pipe-purple { background: linear-gradient(90deg, transparent, var(--accent-purple), transparent); }
.pipe-blue { background: linear-gradient(90deg, transparent, var(--accent-blue), transparent); }

.node-row { display: flex; align-items: center; gap: 8px; margin: 6px 0; }
.mini-node {
  padding: 6px 12px; border-radius: 6px; font-size: 0.75rem; font-weight: 600;
  border: 1px solid; white-space: nowrap;
}
.mn-green { border-color: rgba(0,229,160,0.3); color: var(--accent-green); background: rgba(0,229,160,0.06); }
.mn-blue { border-color: rgba(61,158,255,0.3); color: var(--accent-blue); background: rgba(61,158,255,0.06); }
.mn-purple { border-color: rgba(168,85,247,0.3); color: var(--accent-purple); background: rgba(168,85,247,0.06); }
.mn-orange { border-color: rgba(255,124,42,0.3); color: var(--accent-orange); background: rgba(255,124,42,0.06); }

.active-dot {
  width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0;
  animation: pulse 1.5s ease-in-out infinite;
}
.dot-green { background: var(--accent-green); box-shadow: 0 0 6px var(--accent-green); }
.dot-purple { background: var(--accent-purple); box-shadow: 0 0 6px var(--accent-purple); }

/* Cloud services separator */
.services-sep { margin: 2.5rem 0 1rem; display: flex; gap: 8px; align-items: center; }
.services-sep-text { color: var(--muted); font-size: 0.8rem; }

/* ──────────────────────────────────────────────────────
   RESPONSIVE · TABLET (max-width: 1024px)
   ────────────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .section { padding: 3rem 1.5rem; }
  .arch-section,
  .how-it-works-section,
  .metrics-section { padding: 3rem 1.5rem; }

  nav { padding: 0 1rem; }
  .nav-tab { padding: 5px 10px; font-size: 0.78rem; }

  .timeline-grid { gap: 2rem; }
  .flow-node { min-width: 110px; padding: 10px 14px; }
  .arrow-h { width: 28px; }
}

/* ──────────────────────────────────────────────────────
   RESPONSIVE · SMALL TABLET / LARGE PHONE (max-width: 768px)
   ────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .compare-grid { grid-template-columns: 1fr; }
  .decision-grid { grid-template-columns: 1fr; }
  .nav-tabs { display: none; }
  .nav-tags { display: none; }

  .timeline-grid { grid-template-columns: 1fr; gap: 2.5rem; }

  .section { padding: 2.5rem 1rem; }
  .arch-section,
  .how-it-works-section,
  .metrics-section { padding: 2.5rem 1rem; }

  .hero { padding: 70px 1.25rem 3rem; }
  .hero-sub { font-size: 0.95rem; }

  .arch-canvas { padding: 1.25rem; min-height: auto; }
  .flow-node { min-width: 100px; padding: 10px 12px; }
  .flow-node-title { font-size: 0.76rem; }
  .flow-node-sub { font-size: 0.65rem; }
  .arrow-h { width: 20px; }

  .metrics-grid { grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px; }

  .hybrid-note { flex-direction: column; gap: 0.5rem; }

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

  .section-desc { margin-bottom: 2rem; }
}

/* ──────────────────────────────────────────────────────
   RESPONSIVE · PHONE (max-width: 480px)
   ────────────────────────────────────────────────────── */
@media (max-width: 480px) {
  nav { height: 52px; padding: 0 0.75rem; }
  .logo { font-size: 0.95rem; }

  .hero { padding: 60px 1rem 2rem; min-height: 90vh; }
  h1 { font-size: 1.8rem; margin-bottom: 1rem; }
  .hero-pill { padding: 8px 16px; font-size: 0.85rem; }
  .hero-vs { gap: 0.75rem; }
  .vs-badge { font-size: 1.1rem; }
  .hero-sub { font-size: 0.88rem; margin-bottom: 1.5rem; }
  .btn { padding: 10px 20px; font-size: 0.82rem; }
  .scroll-hint { display: none; }

  .section { padding: 2rem 0.75rem; }
  .arch-section,
  .how-it-works-section,
  .metrics-section { padding: 2rem 0.75rem; }

  .section-title { font-size: 1.4rem; }
  .section-desc { font-size: 0.88rem; margin-bottom: 1.5rem; }

  .compare-col { padding: 1.25rem; }
  .col-title { font-size: 0.95rem; }
  .col-sub { font-size: 0.72rem; }

  .arch-tabs { flex-wrap: wrap; }
  .arch-tab { font-size: 0.78rem; padding: 6px 14px; }
  .arch-canvas { padding: 1rem; min-height: auto; }

  .flow-row { flex-direction: column; gap: 4px; align-items: stretch; }
  .flow-node { min-width: unset; width: 100%; }
  .arrow-h { display: none; }
  .arrow-down { padding: 2px 0; }
  .arrow-down::before { height: 18px; }
  .flow-group { padding: 12px 8px; margin: 0.25rem 0; }
  .flow-group-inner { flex-direction: column; gap: 4px; }
  .flow-group-inner .arrow-h { display: none; }
  .flow-group-inner .flow-node { width: 100%; }

  .node-row { flex-wrap: wrap; gap: 6px; }
  .mini-node { font-size: 0.68rem; padding: 4px 8px; }

  .service-card { padding: 1.25rem; }
  .sc-title { font-size: 0.88rem; }

  .tl-item { gap: 1rem; }
  .tl-num { width: 34px; height: 34px; font-size: 0.72rem; }
  .tl-title { font-size: 0.88rem; }
  .tl-desc { font-size: 0.78rem; }
  .tl-code { font-size: 0.68rem; padding: 8px 10px; }

  .metrics-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
  .metric-card { padding: 1rem; }
  .metric-val { font-size: 1.5rem; }
  .metric-label { font-size: 0.68rem; }

  .decision-card { padding: 1.25rem; }
  .use-case-list li { font-size: 0.78rem; }

  .hybrid-note { padding: 1rem 1.25rem; }

  footer { padding: 1.5rem 1rem; }
  .footer-copyright { font-size: 0.68rem; }

  .theme-toggle { width: 34px; height: 34px; font-size: 1rem; }
}

/* ──────────────────────────────────────────────────────
   RESPONSIVE · VERY SMALL PHONE (max-width: 360px)
   ────────────────────────────────────────────────────── */
@media (max-width: 360px) {
  h1 { font-size: 1.5rem; }
  .hero-pill { padding: 6px 12px; font-size: 0.78rem; }
  .metrics-grid { grid-template-columns: 1fr; }
  .section { padding: 1.5rem 0.5rem; }
  .arch-section,
  .how-it-works-section,
  .metrics-section { padding: 1.5rem 0.5rem; }
}