/* =============================================
   AGENCIA IA — Dirac-inspired editorial dark
   Black canvas · sober sans-serif · gold accent
   ============================================= */

:root {
  --bg:           #0A0A0A;
  --bg-elevated:  #0F0F0F;
  --surface:      #141414;
  --line:         rgba(255, 255, 255, 0.10);
  --line-strong:  rgba(255, 255, 255, 0.18);

  --text:         #F5F5F5;
  --text-muted:   #8A8A8A;
  --text-dim:     #555555;

  --gold:         #D4AF37;
  --gold-bright:  #E8C56C;
  --gold-soft:    rgba(212, 175, 55, 0.18);

  --font-sans:    'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono:    'JetBrains Mono', 'IBM Plex Mono', ui-monospace, monospace;

  --radius-sm: 4px;
  --radius:    8px;
  --ease:      cubic-bezier(0.22, 1, 0.36, 1);
  --t-fast:    180ms var(--ease);
  --t-base:    320ms var(--ease);
  --t-slow:    600ms var(--ease);
}

/* RESET */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: 16px;
  line-height: 1.5;
  letter-spacing: -0.01em;
  overflow-x: hidden;
  text-rendering: optimizeLegibility;
}

img, svg { display: block; max-width: 100%; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { font: inherit; }

::selection { background: var(--gold); color: var(--bg); }

.font-mono { font-family: var(--font-mono); font-feature-settings: 'tnum'; }
.gold { color: var(--gold); }

/* =============================================
   ANIMATED LINE BACKGROUND
   ============================================= */
.aishia-line-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
  background: transparent;
  isolation: isolate;
}
.aishia-line-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.13;
  background-image:
    linear-gradient(90deg, rgba(255,255,255,0.05) 1px, transparent 1px),
    linear-gradient(rgba(255,255,255,0.035) 1px, transparent 1px);
  background-size: 120px 120px;
  -webkit-mask-image: radial-gradient(circle at center, #000 0 44%, transparent 76%);
          mask-image: radial-gradient(circle at center, #000 0 44%, transparent 76%);
}
.aishia-line-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.72;
  background:
    radial-gradient(circle at var(--glow-x, 78%) var(--glow-y, 58%), rgba(232,197,108,0.18), transparent 24rem),
    radial-gradient(circle at var(--glow-x, 78%) var(--glow-y, 58%), rgba(245,245,245,0.08), transparent 18rem);
  mix-blend-mode: screen;
}
#aishia-line-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.92;
  mix-blend-mode: screen;
}
@media (max-width: 760px) {
  #aishia-line-canvas { opacity: 0.58; }
  .aishia-line-bg::before { opacity: 0.08; background-size: 76px 76px; }
  .aishia-line-bg::after  { opacity: 0.46; }
}

/* Keep all content above the animated background */
.navbar, .hero, .section, .footer {
  position: relative;
  z-index: 1;
}

/* =============================================
   LAYOUT — full-bleed editorial grid
   ============================================= */
.shell {
  width: 100%;
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 32px;
}

@media (max-width: 720px) {
  .shell { padding: 0 20px; }
}

/* =============================================
   NAVBAR
   ============================================= */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 20px 0;
  transition: background var(--t-base), backdrop-filter var(--t-base), border-color var(--t-base);
  border-bottom: 1px solid transparent;
}

.navbar.scrolled {
  background: rgba(10, 10, 10, 0.78);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom-color: var(--line);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.nav-logo { display: flex; align-items: center; gap: 10px; }
.logo-img { height: 28px; width: auto; }
.logo-sm  { height: 22px; }
.logo-word {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-link {
  font-size: 14px;
  font-weight: 450;
  color: var(--text-muted);
  transition: color var(--t-fast);
}

.nav-link:hover { color: var(--text); }

.nav-cta {
  color: var(--text);
  border: 1px solid var(--line-strong);
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  transition: background var(--t-fast), border-color var(--t-fast), color var(--t-fast);
}

.nav-cta:hover {
  background: var(--text);
  border-color: var(--text);
  color: var(--bg);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--text);
  transition: transform var(--t-fast), opacity var(--t-fast);
}

/* =============================================
   BUTTONS
   ============================================= */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 24px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: -0.005em;
  cursor: pointer;
  transition: background var(--t-fast), color var(--t-fast), border-color var(--t-fast), transform var(--t-fast);
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background: var(--text);
  color: var(--bg);
}
.btn-primary:hover { background: var(--gold); color: var(--bg); }

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

.btn-arrow::after {
  content: '→';
  display: inline-block;
  transition: transform var(--t-fast);
}
.btn:hover .btn-arrow::after,
.btn-arrow:hover::after { transform: translateX(3px); }

/* =============================================
   HERO — Dirac-style oversized typography
   ============================================= */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 140px 0 60px;
  overflow: hidden;
  isolation: isolate;
}

.hero-eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 28px;
}

.hero-eyebrow .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 12px var(--gold);
}

.hero-headline {
  font-size: clamp(48px, 9vw, 140px);
  font-weight: 500;
  line-height: 0.95;
  letter-spacing: -0.04em;
  max-width: 12ch;
  text-wrap: balance;
  margin-bottom: 48px;
}

.hero-headline .gold-accent {
  color: var(--gold);
  font-style: italic;
  font-weight: 400;
}

.hero-foot {
  display: grid;
  grid-template-columns: 1.2fr 1fr auto;
  gap: 60px;
  align-items: end;
  padding-top: 40px;
  border-top: 1px solid var(--line);
}

.hero-lede {
  font-size: 18px;
  line-height: 1.5;
  color: var(--text-muted);
  max-width: 42ch;
  text-wrap: pretty;
}

.hero-stats {
  display: flex;
  gap: 48px;
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat-num {
  font-size: 32px;
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--text);
  font-feature-settings: 'tnum';
  line-height: 1;
}

.stat-num .suffix { color: var(--gold); margin-left: 2px; }

.stat-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--text-dim);
  text-transform: uppercase;
}

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

@media (max-width: 960px) {
  .hero-foot { grid-template-columns: 1fr; gap: 32px; }
  .hero-stats { gap: 32px; flex-wrap: wrap; }
}

/* =============================================
   SECTIONS — editorial split layouts
   ============================================= */
.section {
  position: relative;
  padding: 140px 0;
  border-top: 1px solid var(--line);
}

.section-head {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 60px;
  align-items: start;
  margin-bottom: 80px;
}

.section-meta {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.section-index {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--gold);
  text-transform: uppercase;
}

.section-kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  text-transform: uppercase;
}

.section-title {
  font-size: clamp(36px, 5.5vw, 84px);
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.035em;
  text-wrap: balance;
}

.section-title .gold-accent {
  color: var(--gold);
  font-style: italic;
  font-weight: 400;
}

.section-lede {
  font-size: 17px;
  line-height: 1.55;
  color: var(--text-muted);
  max-width: 52ch;
  margin-top: 24px;
  text-wrap: pretty;
}

@media (max-width: 900px) {
  .section { padding: 96px 0; }
  .section-head { grid-template-columns: 1fr; gap: 24px; margin-bottom: 56px; }
}

/* =============================================
   SERVICES — list of large rows
   ============================================= */
.services {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line);
}

.service-row {
  display: grid;
  grid-template-columns: 80px 1fr 2fr auto;
  gap: 40px;
  align-items: center;
  padding: 36px 0;
  border-bottom: 1px solid var(--line);
  transition: background var(--t-fast);
  cursor: default;
}

.service-row:hover {
  background: linear-gradient(90deg, transparent 0%, rgba(212,175,55,0.04) 50%, transparent 100%);
}

.service-row:hover .service-name { color: var(--gold); }
.service-row:hover .service-arrow { transform: translateX(6px); color: var(--gold); }

.service-num {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-dim);
  letter-spacing: 0.06em;
}

.service-name {
  font-size: clamp(22px, 2.4vw, 32px);
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--text);
  transition: color var(--t-fast);
}

.service-desc {
  font-size: 15px;
  line-height: 1.55;
  color: var(--text-muted);
  text-wrap: pretty;
}

.service-arrow {
  color: var(--text-muted);
  font-size: 22px;
  transition: transform var(--t-base), color var(--t-fast);
}

@media (max-width: 900px) {
  .service-row {
    grid-template-columns: auto 1fr;
    grid-template-areas:
      "num name"
      "desc desc";
    gap: 12px 20px;
    padding: 28px 0;
  }
  .service-num  { grid-area: num; }
  .service-name { grid-area: name; }
  .service-desc { grid-area: desc; padding-top: 8px; }
  .service-arrow { display: none; }
}

/* =============================================
   ABOUT — split editorial
   ============================================= */
.about {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.about-prose p {
  font-size: 18px;
  line-height: 1.6;
  color: var(--text-muted);
  margin-bottom: 24px;
  max-width: 48ch;
  text-wrap: pretty;
}

.about-prose p strong {
  color: var(--text);
  font-weight: 500;
}

.values {
  margin-top: 48px;
  display: flex;
  flex-direction: column;
  gap: 28px;
  border-top: 1px solid var(--line);
  padding-top: 36px;
}

.value {
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: 24px;
  align-items: start;
}

.value-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--gold);
  letter-spacing: 0.08em;
  padding-top: 4px;
}

.value h4 {
  font-size: 17px;
  font-weight: 500;
  margin-bottom: 6px;
  letter-spacing: -0.01em;
}

.value p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.55;
}

.founder {
  position: sticky;
  top: 120px;
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.founder-photo {
  width: 100%;
  aspect-ratio: 4 / 5;
  overflow: hidden;
  background: var(--surface);
}

.founder-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  filter: grayscale(100%) contrast(1.05);
  transition: filter var(--t-base);
}

.founder:hover .founder-photo img { filter: grayscale(0%); }

.founder-meta {
  padding: 28px;
  border-top: 1px solid var(--line);
}

.founder-name {
  font-size: 22px;
  font-weight: 500;
  letter-spacing: -0.02em;
  margin-bottom: 4px;
}

.founder-role {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--gold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  display: block;
  margin-bottom: 16px;
}

.founder-bio {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 20px;
}

.founder-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text);
  border: 1px solid var(--line-strong);
  padding: 8px 14px;
  border-radius: 999px;
  transition: background var(--t-fast), color var(--t-fast), border-color var(--t-fast);
}
.founder-link svg { width: 14px; height: 14px; }
.founder-link:hover { background: var(--text); color: var(--bg); border-color: var(--text); }

@media (max-width: 960px) {
  .about { grid-template-columns: 1fr; gap: 56px; }
  .founder { position: static; max-width: 420px; }
}

/* =============================================
   TESTIMONIALS — quote-led editorial
   ============================================= */
.quotes {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  border-top: 1px solid var(--line);
  padding-top: 56px;
}

.quote {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.quote-text {
  font-size: 19px;
  line-height: 1.5;
  color: var(--text);
  letter-spacing: -0.01em;
  text-wrap: pretty;
}

.quote-text::before {
  content: '“';
  display: block;
  font-size: 56px;
  line-height: 0.5;
  color: var(--gold);
  margin-bottom: 20px;
  font-weight: 400;
}

.quote-author {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.quote-name {
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
}

.quote-role {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

@media (max-width: 900px) {
  .quotes { grid-template-columns: 1fr; gap: 48px; }
}

/* =============================================
   CTA / CONTACT
   ============================================= */
.cta {
  text-align: left;
}

.cta-headline {
  font-size: clamp(40px, 7vw, 110px);
  font-weight: 500;
  line-height: 0.95;
  letter-spacing: -0.04em;
  margin-bottom: 48px;
  text-wrap: balance;
  max-width: 14ch;
}

.cta-headline .gold-accent {
  color: var(--gold);
  font-style: italic;
  font-weight: 400;
}

.cta-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 60px;
  align-items: end;
  padding-top: 40px;
  border-top: 1px solid var(--line);
}

.cta-lede {
  font-size: 17px;
  color: var(--text-muted);
  line-height: 1.55;
  max-width: 48ch;
  margin-bottom: 32px;
}

.contact-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-item {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 15px;
  color: var(--text);
  padding: 8px 0;
  transition: color var(--t-fast);
}

.contact-item svg { width: 16px; height: 16px; color: var(--gold); flex-shrink: 0; }
.contact-item:hover { color: var(--gold); }

@media (max-width: 720px) {
  .cta-row { grid-template-columns: 1fr; gap: 32px; }
}

/* =============================================
   CONTACT FORM
   ============================================= */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 80px;
  align-items: start;
}

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

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

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

.form-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  text-transform: uppercase;
}

.form-optional {
  color: var(--text-dim);
  font-style: normal;
}

.form-input {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 15px;
  padding: 12px 16px;
  width: 100%;
  transition: border-color var(--t-fast), background var(--t-fast);
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}

.form-input::placeholder { color: var(--text-dim); }
.form-input:focus { border-color: var(--gold); background: var(--bg-elevated); }
.form-input:invalid:not(:placeholder-shown) { border-color: #e05252; }

.form-select {
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%238A8A8A' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
}

.form-textarea { resize: vertical; min-height: 120px; line-height: 1.5; }

.form-footer {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.form-status {
  font-size: 14px;
  line-height: 1.4;
}

.form-status.success { color: var(--gold); }
.form-status.error   { color: #e05252; }

/* submit loading state */
.btn[data-loading] {
  opacity: 0.6;
  pointer-events: none;
}

/* Contact side */
.contact-side {
  display: flex;
  flex-direction: column;
  gap: 36px;
  padding-top: 4px;
}

.contact-side-block {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.contact-side-block .form-label { margin-bottom: 2px; }

.contact-meta {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}

@media (max-width: 900px) {
  .contact-layout { grid-template-columns: 1fr; gap: 48px; }
  .form-row { grid-template-columns: 1fr; }
  .contact-side { flex-direction: row; flex-wrap: wrap; gap: 32px; }
  .contact-side-block { min-width: 160px; }
}

/* =============================================
   FOOTER
   ============================================= */
.footer {
  border-top: 1px solid var(--line);
  padding: 48px 0 32px;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 60px;
  border-bottom: 1px solid var(--line);
}

.footer-brand p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
  margin-top: 12px;
  max-width: 32ch;
}

.footer-col h5 {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  color: var(--text-dim);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

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

.footer-col a {
  font-size: 14px;
  color: var(--text-muted);
  transition: color var(--t-fast);
}
.footer-col a:hover { color: var(--text); }

.footer-bottom {
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--text-dim);
  text-transform: uppercase;
}

@media (max-width: 720px) {
  .footer-top { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

/* =============================================
   REVEAL ANIMATIONS — subtle
   ============================================= */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity var(--t-slow), transform var(--t-slow);
}

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

.reveal[data-delay="1"] { transition-delay: 80ms; }
.reveal[data-delay="2"] { transition-delay: 160ms; }
.reveal[data-delay="3"] { transition-delay: 240ms; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* =============================================
   MOBILE NAV
   ============================================= */
@media (max-width: 720px) {
  .nav-links {
    position: fixed;
    inset: 0 -100% 0 auto;
    width: 80%;
    max-width: 320px;
    background: rgba(10, 10, 10, 0.97);
    backdrop-filter: blur(20px);
    border-left: 1px solid var(--line);
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    padding: 32px;
    gap: 24px;
    transition: right var(--t-base);
    z-index: 999;
  }
  .nav-links.open { right: 0; }
  .nav-link { font-size: 18px; }
  .nav-cta  { width: 100%; justify-content: center; }
  .nav-toggle { display: flex; z-index: 1001; }
}

/* =============================================
   SCROLLBAR
   ============================================= */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--line-strong); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-dim); }