/* ============================================================
   Expert BTS – Minimalist Modern Design System
   Palette: Light / Electric Blue Gradient Accent
   Fonts: Calistoga (display) · Inter (UI) · JetBrains Mono (labels)
   ============================================================ */

:root {
  --bg: #FAFAFA;
  --fg: #0F172A;
  --muted: #F1F5F9;
  --muted-fg: #64748B;
  --accent: #0052FF;
  --accent-2: #4D7CFF;
  --accent-fg: #FFFFFF;
  --border: #E2E8F0;
  --card: #FFFFFF;
  --ring: #0052FF;

  --gradient: linear-gradient(135deg, var(--accent), var(--accent-2));
  --gradient-r: linear-gradient(to right, var(--accent), var(--accent-2));

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.08);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.10);
  --shadow-accent: 0 4px 14px rgba(0, 82, 255, 0.25);
  --shadow-accent-lg: 0 8px 24px rgba(0, 82, 255, 0.35);

  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --font-display: "Calistoga", Georgia, serif;
  --font-ui: "Inter", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", monospace;

  --transition: all 0.2s ease-out;
  --transition-md: all 0.3s ease-out;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-ui);
  background: var(--bg);
  color: var(--fg);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

ul {
  list-style: none;
}

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

button {
  cursor: pointer;
  font-family: inherit;
  border: none;
  background: none;
}

input,
textarea {
  font-family: inherit;
}

/* ── Container ── */
.container {
  max-width: 1152px;
  margin: 0 auto;
  padding: 0 28px;
}

/* ── Gradient utilities ── */
.gradient-text {
  background: var(--gradient-r);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.accent {
  color: var(--accent);
}

/* ── Section label badge ── */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border: 1px solid rgba(0, 82, 255, 0.3);
  background: rgba(0, 82, 255, 0.05);
  border-radius: var(--radius-full);
  padding: 6px 18px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
}

.section-label .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse-dot 2s ease-in-out infinite;
}

/* ── Section headings ── */
.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.25rem);
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--fg);
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--muted-fg);
  line-height: 1.75;
  max-width: 560px;
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 64px;
}

.section-header .section-desc {
  margin: 0 auto;
}

.section-header-flex {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 24px;
  margin-bottom: 56px;
  flex-wrap: wrap;
}

.section-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.92rem;
  letter-spacing: -0.01em;
  transition: var(--transition);
  cursor: pointer;
  border: none;
  white-space: nowrap;
  height: 48px;
}

.btn-lg {
  padding: 14px 36px;
  font-size: 1rem;
  height: 56px;
}

.btn-sm {
  padding: 8px 20px;
  font-size: 0.82rem;
  height: 38px;
}

.btn-full {
  width: 100%;
}

.btn-primary {
  background: var(--gradient-r);
  color: var(--accent-fg);
  box-shadow: var(--shadow-accent);
}

.btn-primary:hover {
  box-shadow: var(--shadow-accent-lg);
  transform: translateY(-2px);
  filter: brightness(1.08);
}

.btn-primary:active {
  transform: scale(0.98);
}

.btn-secondary {
  background: var(--card);
  color: var(--fg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  border-color: rgba(0, 82, 255, 0.3);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  color: var(--accent);
  border: 1.5px solid rgba(0, 82, 255, 0.35);
}

.btn-outline:hover {
  background: var(--accent);
  color: var(--accent-fg);
  border-color: var(--accent);
  box-shadow: var(--shadow-accent);
  transform: translateY(-1px);
}

/* ── Navigation ── */
#navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 0 28px;
  transition: background 0.3s, box-shadow 0.3s;
}

#navbar.scrolled {
  background: rgba(250, 250, 250, 0.92);
  backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 var(--border);
}

.nav-inner {
  max-width: 1152px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 40px;
  height: 72px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-ui);
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  flex-shrink: 0;
  color: var(--fg);
}

.logo-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  box-shadow: var(--shadow-accent);
}

.nav-links {
  display: flex;
  gap: 4px;
  margin-left: auto;
}

.nav-links a {
  padding: 8px 14px;
  border-radius: var(--radius);
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--muted-fg);
  transition: var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--fg);
  background: var(--muted);
}

.nav-cta {
  margin-left: 8px;
  height: 40px;
  padding: 0 20px;
  font-size: 0.88rem;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  margin-left: auto;
  padding: 8px;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--fg);
  border-radius: 2px;
  transition: var(--transition);
}

.hamburger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger.open span:nth-child(2) {
  opacity: 0;
}

.hamburger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ── Hero ── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 140px 0 100px;
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
}

.glow-1 {
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(0, 82, 255, 0.07) 0%, transparent 70%);
  top: -20%;
  right: -15%;
}

.glow-2 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(77, 124, 255, 0.06) 0%, transparent 70%);
  bottom: 0;
  left: -10%;
}

.hero-dots {
  position: absolute;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.4;
}

.dot-1 {
  top: 28%;
  left: 16%;
  animation: pulse-dot 3s ease-in-out infinite;
}

.dot-2 {
  bottom: 28%;
  right: 22%;
  animation: pulse-dot 3s ease-in-out infinite 1.5s;
}

.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 80px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border: 1px solid rgba(0, 82, 255, 0.3);
  background: rgba(0, 82, 255, 0.05);
  border-radius: var(--radius-full);
  padding: 6px 18px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 28px;
}

.badge-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse-dot 2s ease-in-out infinite;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 5.5vw, 5rem);
  font-weight: 400;
  line-height: 1.07;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
  color: var(--fg);
}

.hero-desc {
  font-size: 1.1rem;
  color: var(--muted-fg);
  max-width: 520px;
  margin-bottom: 40px;
  line-height: 1.75;
}

.hero-btns {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

/* Hero graphic */
.hero-graphic {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 420px;
}

.hero-ring {
  position: absolute;
  width: 340px;
  height: 340px;
  border-radius: 50%;
  border: 1.5px dashed rgba(0, 82, 255, 0.2);
  animation: spin-slow 60s linear infinite;
}

.hero-ring-inner {
  position: absolute;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  border: 1px dashed rgba(0, 82, 255, 0.12);
  animation: spin-slow 40s linear infinite reverse;
}

.hero-card-float {
  position: absolute;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px 20px;
  box-shadow: var(--shadow-xl);
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--fg);
  white-space: nowrap;
}

.hero-card-float .card-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  flex-shrink: 0;
}

.float-card-1 {
  top: 10%;
  left: 0;
  animation: float-y 5s ease-in-out infinite;
}

.float-card-2 {
  bottom: 15%;
  right: 0;
  animation: float-y 4s ease-in-out infinite 0.8s;
}

.float-card-3 {
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation: float-y 6s ease-in-out infinite 0.4s;
}

.hero-center-orb {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: var(--gradient);
  box-shadow: var(--shadow-accent-lg);
  opacity: 0.15;
}

.hero-dot-grid {
  position: absolute;
  bottom: 10%;
  left: 10%;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}

.hero-dot-grid span {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.25;
  display: block;
}

/* ── About ── */
.about {
  padding: 120px 0;
  background: var(--bg);
}

.about-visual {
  position: relative;
}

.about-card-main {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 36px;
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.about-checklist {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.about-check-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--fg);
}

.about-check-icon {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: white;
  box-shadow: var(--shadow-accent);
}

.about-icon-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.about-icon-box {
  aspect-ratio: 16/9;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  background: var(--muted);
  border: 1px solid var(--border);
  color: var(--accent);
  opacity: 0.7;
}

.about-badge {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--muted);
  border-radius: var(--radius);
  padding: 14px 18px;
  border: 1px solid var(--border);
}

.about-badge-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  flex-shrink: 0;
  box-shadow: var(--shadow-accent);
}

.about-badge-title {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--fg);
}

.about-badge-sub {
  font-size: 0.75rem;
  color: var(--muted-fg);
}

.about-ring-deco {
  position: absolute;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  border: 1.5px dashed rgba(0, 82, 255, 0.15);
  bottom: -40px;
  right: -40px;
  z-index: -1;
  animation: spin-slow 60s linear infinite;
}

.about-text {
  display: flex;
  flex-direction: column;
}

.about-text .section-title {
  margin-bottom: 16px;
}

.about-text .section-desc {
  margin-bottom: 36px;
}

.about-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 40px;
}

.feature-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius);
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  flex-shrink: 0;
  box-shadow: var(--shadow-accent);
}

.feature-item h4 {
  font-size: 0.92rem;
  font-weight: 700;
  margin-bottom: 4px;
  color: var(--fg);
}

.feature-item p {
  font-size: 0.82rem;
  color: var(--muted-fg);
  line-height: 1.55;
}

/* ── Services ── */
.services {
  padding: 120px 0;
  background: var(--muted);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-md);
  transition: var(--transition-md);
  position: relative;
  overflow: hidden;
}

.service-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0, 82, 255, 0.03), transparent);
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
  border-color: rgba(0, 82, 255, 0.2);
}

.service-card:hover::after {
  opacity: 1;
}

.service-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius);
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  margin-bottom: 20px;
  box-shadow: var(--shadow-accent);
  transition: transform 0.3s;
}

.service-card:hover .service-icon {
  transform: scale(1.08);
}

.service-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--fg);
}

.service-card p {
  font-size: 0.88rem;
  color: var(--muted-fg);
  line-height: 1.65;
  flex: 1;
  margin-bottom: 24px;
}

/* ── Blog ── */
.blog {
  padding: 120px 0;
  background: var(--bg);
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.blog-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-md);
  transition: var(--transition-md);
}

.blog-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
  border-color: rgba(0, 82, 255, 0.2);
}

.blog-thumb {
  aspect-ratio: 16/9;
  background: var(--muted);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(0, 82, 255, 0.2);
  margin-bottom: 20px;
  border: 1px solid var(--border);
}

.blog-date {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 10px;
  display: block;
}

.blog-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 10px;
  line-height: 1.4;
  color: var(--fg);
}

.blog-card p {
  font-size: 0.85rem;
  color: var(--muted-fg);
  line-height: 1.65;
  flex: 1;
  margin-bottom: 20px;
}

.blog-btn {
  width: 100%;
}

/* ── FAQ ── */
.faq {
  padding: 120px 0;
  background: var(--muted);
}

.faq-container {
  max-width: 760px;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.faq-item[open] {
  border-color: rgba(0, 82, 255, 0.25);
  box-shadow: var(--shadow-md);
}

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  cursor: pointer;
  list-style: none;
  user-select: none;
  gap: 16px;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary span {
  font-weight: 700;
  font-size: 0.97rem;
  color: var(--fg);
}

.faq-chevron {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: var(--muted);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--muted-fg);
  transition: transform 0.25s, background 0.2s, color 0.2s;
}

.faq-item[open] .faq-chevron {
  transform: rotate(180deg);
  background: var(--gradient);
  color: white;
  border-color: transparent;
}

.faq-answer {
  padding: 0 24px 20px;
  border-top: 1px solid var(--border);
  padding-top: 16px;
}

.faq-answer p {
  font-size: 0.9rem;
  color: var(--muted-fg);
  line-height: 1.75;
}

/* ── Contact (Inverted Section) ── */
.contact {
  padding: 120px 0;
  background: var(--fg);
  position: relative;
  overflow: hidden;
}

.contact::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
}

.contact-glow {
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 82, 255, 0.18) 0%, transparent 70%);
  filter: blur(80px);
  top: -10%;
  left: -10%;
  pointer-events: none;
}

.contact .section-label {
  border-color: rgba(77, 124, 255, 0.4);
  background: rgba(77, 124, 255, 0.1);
  color: #7BA3FF;
}

.contact .section-label .dot {
  background: #7BA3FF;
}

.contact .section-title {
  color: #FFFFFF;
}

.contact .section-desc {
  color: rgba(255, 255, 255, 0.6);
}

.contact-grid {
  gap: 80px;
  align-items: start;
}

.contact-info {
  display: flex;
  flex-direction: column;
}

.contact-info .section-title {
  margin-bottom: 16px;
}

.contact-info .section-desc {
  margin-bottom: 40px;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-detail-item {
  display: flex;
  align-items: center;
  gap: 18px;
}

.contact-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #7BA3FF;
  flex-shrink: 0;
}

.contact-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #7BA3FF;
  margin-bottom: 4px;
}

.contact-value {
  font-size: 0.97rem;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.9);
}

.contact-form-wrap {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-xl);
  padding: 40px;
  backdrop-filter: blur(10px);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

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

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 0.8rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.6);
  letter-spacing: 0.02em;
}

.input-wrap {
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.12);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.input-wrap:focus-within {
  border-color: rgba(77, 124, 255, 0.6);
  box-shadow: 0 0 0 3px rgba(0, 82, 255, 0.15);
}

.input-wrap input,
.input-wrap textarea {
  width: 100%;
  background: transparent;
  border: none;
  outline: none;
  padding: 13px 16px;
  font-size: 0.92rem;
  color: rgba(255, 255, 255, 0.9);
  font-weight: 500;
  resize: none;
}

.input-wrap input::placeholder,
.input-wrap textarea::placeholder {
  color: rgba(255, 255, 255, 0.3);
}

.form-success {
  text-align: center;
  padding: 14px;
  border-radius: var(--radius);
  background: rgba(0, 82, 255, 0.15);
  border: 1px solid rgba(77, 124, 255, 0.4);
  font-size: 0.9rem;
  font-weight: 600;
  color: #7BA3FF;
}

/* ── Footer ── */
.footer {
  padding: 72px 0 40px;
  background: var(--bg);
  border-top: 1px solid var(--border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 60px;
  margin-bottom: 56px;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.footer-logo {
  margin-bottom: 4px;
}

.footer-brand p {
  font-size: 0.88rem;
  color: var(--muted-fg);
  line-height: 1.7;
  max-width: 300px;
}

.footer-socials {
  display: flex;
  gap: 8px;
  margin-top: 4px;
}

.social-btn {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: var(--muted);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted-fg);
  transition: var(--transition);
}

.social-btn:hover {
  background: var(--gradient);
  color: white;
  border-color: transparent;
  box-shadow: var(--shadow-accent);
}

.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 18px;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col a {
  font-size: 0.88rem;
  color: var(--muted-fg);
  transition: color 0.2s;
}

.footer-col a:hover {
  color: var(--accent);
}

.footer-bottom {
  display: flex;
  justify-content: center;
  align-items: center;
  padding-top: 28px;
  border-top: 1px solid var(--border);
}

.footer-bottom p {
  font-size: 0.8rem;
  color: var(--muted-fg);
  font-weight: 500;
}

/* ── Animations ── */
@keyframes pulse-dot {

  0%,
  100% {
    opacity: 0.5;
    transform: scale(1);
  }

  50% {
    opacity: 1;
    transform: scale(1.4);
  }
}

@keyframes spin-slow {
  from {
    transform: rotate(0deg);
  }

  to {
    transform: rotate(360deg);
  }
}

@keyframes float-y {

  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-10px);
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(28px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ── Scroll-reveal ── */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Responsive ── */
@media (max-width: 1024px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .section-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .hero-inner {
    grid-template-columns: 1fr;
  }

  .hero-graphic {
    display: none;
  }

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

  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 768px) {

  .nav-links,
  .nav-cta {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: rgba(250, 250, 250, 0.98);
    backdrop-filter: blur(20px);
    padding: 20px;
    gap: 4px;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
  }

  .nav-links.open a {
    padding: 12px 16px;
    border-radius: var(--radius);
  }

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

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

  .about-features {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .section-header-flex {
    flex-direction: column;
    align-items: flex-start;
  }

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

@media (max-width: 480px) {
  .hero-btns {
    flex-direction: column;
  }

  .hero-btns .btn {
    width: 100%;
  }

  .about-checklist {
    grid-template-columns: 1fr;
  }

  .contact-form-wrap {
    padding: 24px;
  }
}