/* =========================================================
   ENERJİMETRE — brand tokens
   Change colors here; the rest of the site follows.
   ========================================================= */
:root {
  --bg: #070b14;
  --bg-elevated: #0d1422;
  --panel: #111a2b;
  --panel-2: #162033;
  --line: rgba(90, 196, 255, 0.18);
  --line-strong: rgba(90, 196, 255, 0.38);
  --cyan: #3ee0ff;
  --cyan-2: #4aa8ff;
  --green: #5ee0a8;
  --text: #f4f7fb;
  --muted: #b4c0d1;
  --muted-2: #8794a8;
  --danger: #ff6b6b;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
  --radius: 16px;
  --max: 1240px;
  --header-h: 76px;
  --font: "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
}

/* Reset / base */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

img,
svg,
canvas {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input {
  font: inherit;
}

h1,
h2,
h3,
p,
ul,
ol {
  margin: 0;
}

ul {
  padding: 0;
  list-style: none;
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -40px;
  background: var(--cyan);
  color: #041018;
  padding: 8px 12px;
  z-index: 100;
}

.skip-link:focus {
  top: 12px;
}

.container {
  width: min(var(--max), calc(100% - 48px));
  margin-inline: auto;
}

.container.narrow {
  width: min(820px, calc(100% - 48px));
}

.eyebrow {
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-size: 0.75rem;
  color: var(--cyan);
  font-weight: 700;
  margin-bottom: 14px;
}

h1,
h2 {
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.08;
}

h1 {
  font-size: clamp(2.4rem, 5vw, 4.4rem);
}

h2 {
  font-size: clamp(1.8rem, 3.6vw, 3rem);
}

.accent-text {
  background: linear-gradient(120deg, var(--cyan) 0%, var(--cyan-2) 70%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.lede,
.section-copy {
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 58ch;
}

.section {
  padding: 112px 0;
  position: relative;
}

.section-alt {
  background: linear-gradient(180deg, rgba(17, 26, 43, 0.55), transparent);
}

.section-head {
  margin-bottom: 48px;
}

.section-head h2 + .section-copy,
.section-head h2 + p {
  margin-top: 16px;
}

.istanbul-note-title {
  margin-top: 12px;
  color: var(--cyan);
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  line-height: 1.3;
}

.istanbul-note-copy {
  margin-top: 6px;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.45;
  max-width: 58ch;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  font-weight: 700;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.btn:focus-visible,
a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.btn-cta {
  background: linear-gradient(180deg, #5ae8ff, #2bb7ff);
  color: #041018;
  box-shadow: 0 0 0 1px rgba(62, 224, 255, 0.25), 0 10px 28px rgba(46, 180, 255, 0.22);
}

.btn-cta:hover {
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  border-color: var(--line-strong);
  color: var(--text);
}

.btn-ghost:hover {
  border-color: var(--cyan);
  background: rgba(62, 224, 255, 0.06);
}

.btn-large {
  min-height: 54px;
  padding-inline: 28px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background 0.25s ease, border-color 0.25s ease, backdrop-filter 0.25s ease;
}

.site-header.is-solid {
  background: rgba(7, 11, 20, 0.86);
  border-bottom-color: var(--line);
  backdrop-filter: blur(16px);
}

.nav-inner {
  width: min(var(--max), calc(100% - 48px));
  margin: 0 auto;
  min-height: var(--header-h);
  display: flex;
  align-items: center;
  gap: 28px;
}

.wordmark {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.wordmark-symbol {
  display: block;
  width: 98px;
  height: 38px;
  flex: 0 0 98px;
  object-fit: cover;
  object-position: center;
  filter: brightness(0) invert(1);
}

.wordmark-arkhe {
  color: var(--text);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  margin-left: -2px;
}

.wordmark-divider {
  width: 1px;
  height: 16px;
  background: var(--line-strong);
}

.wordmark-product {
  color: var(--text);
  font-size: 0.92rem;
}

.nav-desktop {
  display: flex;
  gap: 22px;
  margin-left: auto;
}

.nav-desktop a {
  color: var(--muted);
  font-size: 0.92rem;
}

.nav-desktop a:hover,
.nav-desktop a:focus-visible {
  color: var(--text);
}

.nav-inner > .btn-cta {
  margin-left: 8px;
}

.menu-toggle {
  display: none;
  margin-left: auto;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  background: transparent;
  border-radius: 10px;
  padding: 10px;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  height: 2px;
  background: var(--text);
  margin: 5px 0;
}

.nav-mobile {
  display: none;
  flex-direction: column;
  gap: 14px;
  padding: 8px 24px 24px;
  background: rgba(7, 11, 20, 0.96);
  border-bottom: 1px solid var(--line);
}

.nav-mobile a {
  color: var(--muted);
}

/* Hero */
.hero {
  position: relative;
  min-height: calc(100vh - var(--header-h));
  display: flex;
  align-items: center;
  padding: 48px 0 88px;
  overflow: hidden;
}

.hero-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(62, 224, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(62, 224, 255, 0.05) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at 70% 40%, black 20%, transparent 72%);
  pointer-events: none;
}

.hero-layout {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 48px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-copy .lede {
  margin: 22px 0 28px;
}

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

.hero-visual {
  position: relative;
  min-height: 400px;
  display: grid;
  place-items: center;
}

.orbit {
  position: absolute;
  border: 1px solid rgba(62, 224, 255, 0.14);
  border-radius: 50%;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.orbit-1 { width: 240px; height: 240px; }
.orbit-2 { width: 320px; height: 320px; }
.orbit-3 { width: 400px; height: 400px; opacity: 0.7; }

.hero-visual::before {
  content: "";
  position: absolute;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(62, 224, 255, 0.16), transparent 68%);
  filter: blur(8px);
}

.particles span {
  position: absolute;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--cyan);
  opacity: 0.45;
  animation: particle 7s linear infinite;
}

.particles span:nth-child(1) { top: 12%; left: 22%; animation-delay: 0s; }
.particles span:nth-child(2) { top: 28%; right: 16%; animation-delay: 1.2s; }
.particles span:nth-child(3) { bottom: 22%; left: 18%; animation-delay: 2s; }
.particles span:nth-child(4) { bottom: 16%; right: 24%; animation-delay: 3.1s; }
.particles span:nth-child(5) { top: 48%; left: 8%; animation-delay: 4s; }

@keyframes particle {
  0%, 100% { transform: translateY(0); opacity: 0.25; }
  50% { transform: translateY(-10px); opacity: 0.7; }
}

.device {
  position: relative;
  z-index: 2;
  width: min(360px, 72%);
  aspect-ratio: 3 / 2;
  overflow: hidden;
  border-radius: 16px;
  border: 1px solid rgba(62, 224, 255, 0.28);
  background: #050810;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35), 0 0 28px rgba(62, 224, 255, 0.12);
}

.hero-product-video {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 52% 54%;
  transform: scale(1.08);
  transform-origin: center center;
  background: #050810;
}

.device-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
  letter-spacing: 0.12em;
  font-size: 0.72rem;
  color: var(--muted);
}

.device-model {
  color: var(--cyan);
  font-weight: 800;
}

.device-screen {
  background: #071018;
  border-radius: 14px;
  padding: 16px;
  border: 1px solid rgba(62, 224, 255, 0.12);
}

.readout-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.readout span {
  display: block;
  color: var(--muted-2);
  font-size: 0.7rem;
}

.readout strong {
  font-size: 1.05rem;
}

.readout small {
  font-size: 0.7rem;
  color: var(--muted);
}

.mini-chart {
  margin-top: 16px;
  width: 100%;
  height: 72px;
}

.chart-area {
  fill: url(#chartFill);
}

.chart-line {
  fill: none;
  stroke: var(--cyan);
  stroke-width: 2;
  stroke-linejoin: round;
  stroke-linecap: round;
  stroke-dasharray: 420;
  stroke-dashoffset: 420;
  animation: draw-line 2.8s ease forwards;
}

@keyframes draw-line {
  to { stroke-dashoffset: 0; }
}

.float-card {
  position: absolute;
  z-index: 3;
  min-width: 118px;
  padding: 10px 12px;
  border-radius: 12px;
  background: rgba(13, 20, 34, 0.72);
  border: 1px solid var(--line);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow);
  animation: float 6s ease-in-out infinite;
}

.float-label {
  display: block;
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  color: var(--muted-2);
}

.float-card strong {
  display: block;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  line-height: 1.25;
  font-weight: 800;
}

.status-ok {
  color: var(--green);
}

.float-live { top: 10%; left: 4%; }
.float-co2 { top: 12%; right: 4%; animation-delay: 0.6s; }
.float-status { bottom: 14%; left: 2%; animation-delay: 1.1s; }
.float-puant { bottom: 10%; right: 2%; animation-delay: 1.8s; }

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.scroll-cue {
  position: absolute;
  left: 50%;
  bottom: 18px;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--muted-2);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.scroll-line {
  width: 1px;
  height: 28px;
  background: linear-gradient(var(--cyan), transparent);
  animation: cue 1.6s ease-in-out infinite;
}

@keyframes cue {
  0%, 100% { opacity: 0.3; transform: scaleY(0.7); }
  50% { opacity: 1; transform: scaleY(1); }
}

/* Problem cards */
.problem-grid,
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.problem-card,
.feature-card,
.model-card,
.benefit-card,
.view-panel,
.demo-frame,
.compare-wrap {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.problem-card,
.feature-card {
  padding: 24px;
  transition: border-color 0.2s ease, transform 0.2s ease, background 0.2s ease;
}

.problem-card:hover,
.feature-card:hover {
  transform: translateY(-3px);
  border-color: var(--line-strong);
  background: var(--panel-2);
}

.card-index {
  color: var(--cyan);
  font-weight: 800;
  font-size: 0.82rem;
  letter-spacing: 0.12em;
}

.problem-card h3,
.feature-card h3 {
  margin: 10px 0 10px;
  font-size: 1.15rem;
}

.problem-card p,
.feature-card li {
  color: var(--muted);
  font-size: 0.95rem;
}

.feature-card ul {
  display: grid;
  gap: 6px;
}

.feature-card li::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  margin-right: 8px;
}

.feature-media {
  margin-top: 16px;
  width: min(220px, 100%);
  overflow: hidden;
  border-radius: 12px;
  border: 1px solid rgba(62, 224, 255, 0.28);
  background: #050810;
  box-shadow: 0 0 20px rgba(62, 224, 255, 0.12);
}

.feature-video {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 5 / 4;
  object-fit: contain;
  object-position: center;
  background: #050810;
}

.feature-link {
  display: inline-flex;
  align-items: center;
  margin-top: 16px;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--cyan);
  border-bottom: 1px solid rgba(62, 224, 255, 0.35);
  padding-bottom: 2px;
}

.feature-link:hover,
.feature-link:focus-visible {
  color: var(--text);
  border-bottom-color: var(--cyan);
}

.icon-wrap {
  width: 40px;
  height: 40px;
  color: var(--cyan);
}

.icon-wrap svg {
  width: 32px;
  height: 32px;
}

/* Solution flow */
.solution-layout {
  display: grid;
  gap: 40px;
}

.energy-flow {
  list-style: none;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  flex-wrap: wrap;
}

.flow-node {
  display: inline-flex;
  min-width: 140px;
  justify-content: center;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--bg-elevated);
  font-weight: 700;
  letter-spacing: 0.04em;
}

.flow-node-core {
  border-color: var(--line-strong);
  box-shadow: 0 0 24px rgba(62, 224, 255, 0.12);
  color: var(--cyan);
}

.flow-connector {
  flex: 1;
  min-width: 36px;
  height: 2px;
  background: rgba(62, 224, 255, 0.15);
  position: relative;
  overflow: hidden;
  list-style: none;
}

.flow-connector span {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
  animation: flow 2.4s linear infinite;
}

@keyframes flow {
  from { transform: translateX(-100%); }
  to { transform: translateX(100%); }
}

/* Views */
.view-panel {
  padding: 20px;
}

.view-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}

.tab-btn {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 10px 18px;
  cursor: pointer;
}

.tab-btn.is-active {
  color: #041018;
  background: var(--cyan);
  border-color: var(--cyan);
}

.view-stage {
  min-height: 0;
  background: #08101a;
  border-radius: 14px;
  border: 1px solid rgba(62, 224, 255, 0.1);
  display: grid;
  place-items: center;
  padding: 24px;
}

.view-pane {
  width: 100%;
  text-align: center;
}

.view-pane[hidden] {
  display: none;
}

.view-pane.is-active {
  animation: view-fade 0.35s ease;
}

@keyframes view-fade {
  from { opacity: 0; }
  to { opacity: 1; }
}

.view-video-frame {
  width: min(520px, 100%);
  margin: 0 auto;
  overflow: hidden;
  border-radius: 16px;
  border: 1px solid rgba(62, 224, 255, 0.28);
  background: #050810;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35), 0 0 28px rgba(62, 224, 255, 0.12);
}

.view-video {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 5 / 4;
  object-fit: contain;
  object-position: center;
  background: #050810;
}

.view-caption {
  margin-top: 16px;
  color: var(--muted-2);
  font-size: 0.92rem;
}

/* CO2 */
.co2-layout {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: center;
}

.co2-view {
  min-width: 0;
}

.co2-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}

.co2-tab {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 10px 18px;
  cursor: pointer;
}

.co2-tab.is-active {
  color: #041018;
  background: var(--green);
  border-color: var(--green);
}

.co2-stage {
  background: #08101a;
  border-radius: 14px;
  border: 1px solid rgba(94, 224, 168, 0.18);
  padding: 18px;
}

.co2-pane[hidden] {
  display: none;
}

.co2-pane.is-active {
  animation: view-fade 0.35s ease;
}

.co2-video-frame {
  width: min(480px, 100%);
  margin: 0 auto;
  overflow: hidden;
  border-radius: 16px;
  border: 1px solid rgba(94, 224, 168, 0.28);
  background: #050810;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35), 0 0 28px rgba(94, 224, 168, 0.14);
}

.co2-video {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 5 / 4;
  object-fit: contain;
  object-position: center;
  background: #050810;
}

.co2-view .co2-sub {
  margin-top: 14px;
  text-align: center;
}

.co2-kicker,
.co2-sub {
  color: var(--muted-2);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-size: 0.75rem;
}

/* Demo placeholder */
.demo-placeholder {
  min-height: 360px;
  display: grid;
  place-content: center;
  text-align: center;
  gap: 12px;
  background:
    linear-gradient(rgba(62, 224, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(62, 224, 255, 0.04) 1px, transparent 1px),
    #08101a;
  background-size: 32px 32px, 32px 32px, auto;
  border-radius: 16px;
  border: 1px dashed var(--line-strong);
  padding: 40px 24px;
}

.live-status {
  justify-self: center;
  margin: 0;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted-2);
}

.demo-placeholder p:not(.live-status) {
  color: var(--muted);
}

.demo-placeholder .btn {
  justify-self: center;
}

.demo-placeholder.is-live {
  min-height: 0;
  padding: 12px;
  border-style: solid;
  border-color: rgba(62, 224, 255, 0.28);
}

.live-demo-iframe {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  min-height: 240px;
  border: 0;
  border-radius: 12px;
  background: #000;
}

.live-demo-onair[hidden] {
  display: none;
}

.live-demo-onair {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(220px, 0.7fr);
  gap: 20px;
  align-items: stretch;
  padding: 16px;
  border-radius: 16px;
  border: 1px solid rgba(62, 224, 255, 0.28);
  background: #08101a;
}

.live-demo-telegram {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 12px;
  padding: 22px 18px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--panel);
}

.live-demo-hint {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.45;
}

.live-demo-qr {
  display: block;
  width: min(220px, 100%);
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: contain;
  background: #fff;
  padding: 8px;
  border-radius: 8px;
}

.live-demo-or {
  margin: 0;
  width: 100%;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--muted-2);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  font-weight: 700;
}

.live-demo-or::before,
.live-demo-or::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--line);
}

/* Models */
.model-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
}

.model-card {
  padding: 28px;
  position: relative;
}

.model-card-featured {
  border-color: var(--line-strong);
  box-shadow: 0 0 0 1px rgba(62, 224, 255, 0.12), var(--shadow);
  background: linear-gradient(180deg, rgba(62, 224, 255, 0.08), var(--panel) 40%);
}

.featured-badge {
  display: inline-block;
  margin-bottom: 12px;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #041018;
  background: var(--cyan);
  border-radius: 999px;
  padding: 6px 10px;
  font-weight: 800;
}

.model-tag {
  color: var(--muted);
  margin: 8px 0 18px;
}

.model-card ul {
  display: grid;
  gap: 8px;
  margin-bottom: 24px;
}

.model-card li {
  color: var(--muted);
  padding-left: 18px;
  position: relative;
}

.model-card li::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
  position: absolute;
  left: 0;
  top: 8px;
}

.compare-wrap {
  margin-top: 32px;
  padding: 22px;
}

.compare-title {
  margin-bottom: 14px;
  font-size: 1rem;
}

.table-scroll {
  overflow-x: auto;
}

.compare-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.compare-table th,
.compare-table td {
  text-align: left;
  padding: 12px 10px;
  border-bottom: 1px solid var(--line);
}

.compare-table th {
  color: var(--muted);
  font-weight: 600;
}

/* Process */
.process {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  position: relative;
}

.process-step {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-elevated);
}

.process-num {
  color: var(--cyan);
  font-weight: 800;
  letter-spacing: 0.12em;
}

.process-step h3 {
  margin: 10px 0;
}

.process-step p {
  color: var(--muted);
}

.benefit-card {
  margin-top: 28px;
  padding: 28px;
  border-color: rgba(94, 224, 168, 0.35);
}

.benefit-kicker {
  color: var(--green);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-size: 0.75rem;
  font-weight: 800;
}

.benefit-card h3 {
  margin: 8px 0 10px;
}

.benefit-card p {
  color: var(--muted);
}

.honest-line {
  margin: 28px 0;
  font-size: 1.2rem;
  font-weight: 700;
}

.demo-form {
  display: grid;
  gap: 14px;
  max-width: 760px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.demo-form label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 0.9rem;
}

.demo-form input {
  background: #08101a;
  border: 1px solid var(--line);
  color: var(--text);
  border-radius: 10px;
  min-height: 46px;
  padding: 0 12px;
}

.demo-form .btn {
  justify-self: start;
}

.form-note,
.form-status {
  color: var(--muted-2);
  font-size: 0.88rem;
}

.form-privacy {
  color: var(--muted-2);
  font-size: 0.8rem;
  line-height: 1.5;
  max-width: 62ch;
}

.form-privacy a {
  color: var(--cyan);
  border-bottom: 1px solid rgba(62, 224, 255, 0.3);
}

.form-privacy a:hover {
  border-bottom-color: var(--cyan);
}

.form-status.is-success {
  color: var(--green);
}

.form-status.is-error {
  color: var(--danger);
}

.demo-form .btn:disabled {
  opacity: 0.7;
  cursor: wait;
}

/* FAQ */
.faq-item {
  border-bottom: 1px solid var(--line);
}

.faq-trigger {
  width: 100%;
  text-align: left;
  background: none;
  border: 0;
  color: var(--text);
  padding: 18px 0;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  cursor: pointer;
  font-size: 1.05rem;
  font-weight: 700;
}

.faq-icon {
  width: 14px;
  height: 14px;
  border-right: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
  transform: rotate(45deg);
  margin-top: 4px;
  flex: 0 0 14px;
  transition: transform 0.2s ease;
}

.faq-item.is-open .faq-icon {
  transform: rotate(-135deg);
}

.faq-panel {
  padding: 0 0 18px;
}

.faq-panel p {
  color: var(--muted);
}

/* Final CTA + footer */
.final-cta {
  padding: 120px 0;
  text-align: center;
  background:
    radial-gradient(circle at 50% 0%, rgba(62, 224, 255, 0.12), transparent 50%),
    var(--bg);
}

.final-cta .btn {
  margin-top: 28px;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 48px 0 24px;
  color: var(--muted);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 28px;
}

.footer-brand {
  color: var(--text);
  font-weight: 800;
  letter-spacing: 0.12em;
}

.footer-label {
  color: var(--text);
  font-weight: 700;
  margin-bottom: 8px;
}

.site-footer nav {
  display: grid;
  gap: 6px;
}

.site-footer a:hover {
  color: var(--cyan);
}

.footer-bottom a {
  color: var(--cyan);
}

/* KVKK / legal page */
.legal-page {
  padding: 48px 0 80px;
}

.legal-page h1 {
  margin: 12px 0 28px;
  font-size: clamp(1.8rem, 3.2vw, 2.6rem);
}

.legal-page .legal-meta {
  color: var(--muted);
  margin-bottom: 28px;
}

.legal-page h2 {
  font-size: 1.15rem;
  margin: 28px 0 10px;
}

.legal-page p,
.legal-page li {
  color: var(--muted);
  max-width: 68ch;
}

.legal-page ul {
  padding-left: 1.2rem;
  list-style: disc;
  display: grid;
  gap: 6px;
}

.legal-back {
  display: inline-block;
  margin-top: 36px;
  color: var(--cyan);
  font-weight: 700;
}

/* Reveal */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  animation: none;
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
  transition: opacity 0.7s ease, transform 0.7s ease;
}

/* Responsive */
@media (max-width: 1024px) {
  .hero-layout,
  .co2-layout,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .problem-grid,
  .feature-grid {
    grid-template-columns: 1fr 1fr;
  }

  .hero-layout {
    gap: 32px;
  }

  .hero-visual {
    min-height: 0;
    padding: 28px 8px 12px;
  }

  .device {
    width: min(300px, 68%);
  }
}

@media (max-width: 768px) {
  .nav-desktop,
  .nav-inner > .btn-cta {
    display: none;
  }

  .menu-toggle {
    display: block;
  }

  .wordmark-symbol {
    width: 86px;
    height: 33px;
    flex-basis: 86px;
  }

  .wordmark-arkhe {
    font-size: 0.95rem;
  }

  .nav-mobile:not([hidden]) {
    display: flex;
  }

  .view-stage {
    padding: 14px;
  }

  .co2-stage {
    padding: 12px;
  }

  .live-demo-onair {
    grid-template-columns: 1fr;
    padding: 12px;
  }

  .problem-grid,
  .feature-grid,
  .model-grid,
  .process,
  .form-row {
    grid-template-columns: 1fr;
  }

  .energy-flow {
    flex-direction: column;
    align-items: stretch;
  }

  .flow-connector {
    width: 2px;
    height: 28px;
    min-width: 2px;
    align-self: center;
  }

  .flow-connector span {
    background: linear-gradient(180deg, transparent, var(--cyan), transparent);
    animation-name: flow-v;
  }

  .container,
  .nav-inner {
    width: min(var(--max), calc(100% - 28px));
  }

  .float-card {
    min-width: 88px;
    padding: 7px 9px;
  }

  .float-card strong {
    font-size: 0.7rem;
    letter-spacing: 0.04em;
  }

  .hero {
    min-height: 0;
    padding: 24px 0 56px;
  }

  .hero-layout {
    gap: 20px;
  }

  .hero-copy .lede {
    margin-bottom: 20px;
  }

  .hero-visual {
    padding: 36px 4px 20px;
  }

  .device {
    width: min(240px, 62%);
  }

  .orbit-1 { width: 180px; height: 180px; }
  .orbit-2 { width: 250px; height: 250px; }
  .orbit-3 { width: 310px; height: 310px; }

  .hero-visual::before {
    width: 180px;
    height: 180px;
  }

  .float-live { top: 2px; left: 0; }
  .float-co2 { top: 2px; right: 0; }
  .float-status { bottom: 6px; left: 0; }
  .float-puant { bottom: 6px; right: 0; }
}

@keyframes flow-v {
  from { transform: translateY(-100%); }
  to { transform: translateY(100%); }
}

/*
  Animasyonlar isletim sistemi ayarina bagli degildir.
  Hareketi azaltmak isteyen ziyaretci icin sayfaya
  <html data-motion="reduce"> eklemek yeterlidir.
*/
[data-motion="reduce"] {
  scroll-behavior: auto;
}

[data-motion="reduce"] *,
[data-motion="reduce"] *::before,
[data-motion="reduce"] *::after {
  animation: none !important;
  transition: none !important;
}

[data-motion="reduce"] .reveal {
  opacity: 1;
  transform: none;
}