:root {
  --bg: #0a0a0a;
  --surface: #111111;
  --surface2: #191919;
  --border: #2a2a2a;
  --accent: #c8f65e;
  --accent2: #f6d85e;
  --accent3: #5ef6c8;
  --text: #f0ede8;
  --muted: #888;
  --danger: #ff4d4d;
}

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

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Be Vietnam Pro', sans-serif;
  overflow-x: hidden;
}

/* NAV */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 48px;
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.logo {
  font-family: 'Be Vietnam Pro', sans-serif;
  font-weight: 800;
  font-size: 1.3rem;
  letter-spacing: -0.02em;
  color: var(--text);
  text-decoration: none;
}

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

nav ul {
  display: flex;
  gap: 32px;
  list-style: none;
}

nav ul a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: color 0.2s;
}

nav ul a:hover {
  color: var(--accent);
}

nav ul a.nav-active {
  color: var(--accent);
}

.nav-cta {
  background: var(--accent);
  color: #0a0a0a !important;
  padding: 10px 20px;
  font-weight: 500;
  font-family: 'Be Vietnam Pro', sans-serif;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  transition: background 0.2s, transform 0.2s !important;
  cursor: pointer;
}

.nav-cta:hover {
  background: #d9ff7a !important;
  transform: translateY(-1px);
}

/* PAGE SECTIONS */
.page {
  display: none;
  min-height: 100vh;
  padding-top: 90px;
}

.page.active {
  display: block;
}

/* ============ PAGE 1 — HERO ============ */
.hero {
  min-height: calc(100vh - 90px);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  position: relative;
  overflow: hidden;
}

.hero-left {
  padding: 80px 48px 80px 80px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  z-index: 2;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--surface2);
  border: 1px solid var(--border);
  padding: 6px 14px;
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 32px;
  width: fit-content;
}

.tag::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
}


.hero-title {
  font-family: 'Be Vietnam Pro', sans-serif;
  font-weight: 800;
  font-size: clamp(3rem, 5vw, 5.5rem);
  line-height: 0.95;
  letter-spacing: -0.03em;
  margin-bottom: 28px;
}

.hero-title .italic {
  font-family: 'Playfair Display', serif;
  font-style: italic;
  font-weight: 400;
  color: var(--accent);
}

.hero-title .outline {
  -webkit-text-stroke: 2px var(--text);
  color: transparent;
}

.hero-desc {
  font-size: 0.95rem;
  line-height: 1.8;
  color: #aaa;
  max-width: 500px;
  margin-bottom: 40px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  align-items: center;
}

.btn-primary {
  background: var(--accent);
  color: #0a0a0a;
  padding: 16px 32px;
  font-family: 'Be Vietnam Pro', sans-serif;
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  border: none;
  cursor: pointer;
  transition: transform 0.2s, background 0.2s;
  text-decoration: none;
  display: inline-block;
}

.btn-primary:hover {
  background: #d9ff7a;
  transform: translateY(-2px);
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  padding: 15px 32px;
  font-family: 'Be Vietnam Pro', sans-serif;
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  border: 1px solid var(--border);
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s;
  text-decoration: none;
  display: inline-block;
}

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.hero-right {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 48px;
}

.flow-visual {
  width: 100%;
  max-width: 480px;
  position: relative;
}

.flow-node {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 16px 20px;
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 12px;
  transition: border-color 0.3s;
  animation: fadeUp 0.6s ease both;
}

.flow-node:hover {
  border-color: var(--accent);
}

.flow-node:nth-child(1) {
  animation-delay: 0.1s;
}

.flow-node:nth-child(2) {
  animation-delay: 0.2s;
}

.flow-node:nth-child(3) {
  animation-delay: 0.3s;
}

.flow-node:nth-child(4) {
  animation-delay: 0.4s;
}

.flow-node:nth-child(5) {
  animation-delay: 0.5s;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

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

.node-icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
}

.node-icon.green {
  background: rgba(200, 246, 94, 0.12);
  color: var(--accent);
}

.node-icon.yellow {
  background: rgba(246, 216, 94, 0.12);
  color: var(--accent2);
}

.node-icon.cyan {
  background: rgba(94, 246, 200, 0.12);
  color: var(--accent3);
}

.node-icon.red {
  background: rgba(255, 77, 77, 0.12);
  color: var(--danger);
}

.node-icon.muted {
  background: var(--surface2);
  color: var(--muted);
}

.node-info {
  flex: 1;
}

.node-name {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text);
}

.node-status {
  font-size: 0.65rem;
  color: var(--muted);
  margin-top: 2px;
  letter-spacing: 0.05em;
}

.node-badge {
  font-size: 0.6rem;
  padding: 3px 8px;
  font-family: 'Be Vietnam Pro', sans-serif;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.badge-ok {
  background: rgba(200, 246, 94, 0.15);
  color: var(--accent);
  border: 1px solid rgba(200, 246, 94, 0.3);
}

.badge-warn {
  background: rgba(246, 216, 94, 0.15);
  color: var(--accent2);
  border: 1px solid rgba(246, 216, 94, 0.3);
}

.badge-err {
  background: rgba(255, 77, 77, 0.15);
  color: var(--danger);
  border: 1px solid rgba(255, 77, 77, 0.3);
}

.flow-connector {
  display: flex;
  align-items: center;
  padding: 0 20px;
  height: 20px;
  gap: 8px;
}

.connector-line {
  width: 2px;
  height: 20px;
  background: var(--border);
  margin-left: 17px;
}

.score-card {
  margin-top: 20px;
  background: var(--accent);
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  animation: fadeUp 0.6s ease 0.6s both;
}

.score-label {
  font-size: 0.7rem;
  color: rgba(0, 0, 0, 0.6);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.score-num {
  font-family: 'Be Vietnam Pro', sans-serif;
  font-weight: 800;
  font-size: 2.5rem;
  color: #0a0a0a;
  line-height: 1;
}

.score-sub {
  font-size: 0.65rem;
  color: rgba(0, 0, 0, 0.5);
  margin-top: 4px;
}

/* BG GRID */
.bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(200, 246, 94, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(200, 246, 94, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}

/* PROBLEM SECTION */
.section {
  padding: 120px 80px;
  border-top: 1px solid var(--border);
}

.section-label {
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.section-label::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
  max-width: 80px;
}

.section-title {
  font-family: 'Be Vietnam Pro', sans-serif;
  font-weight: 800;
  font-size: clamp(2rem, 4vw, 3.5rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
}

.section-title .hl {
  color: var(--accent);
}

.section-title .ital {
  font-family: 'Playfair Display', serif;
  font-style: italic;
  font-weight: 400;
}

.pain-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  margin-top: 60px;
}

.pain-card {
  background: var(--bg);
  padding: 40px 36px;
  position: relative;
  overflow: hidden;
  transition: background 0.3s;
}

.pain-card:hover {
  background: var(--surface);
}

.pain-card::before {
  content: attr(data-num);
  position: absolute;
  top: -10px;
  right: 20px;
  font-family: 'Be Vietnam Pro', sans-serif;
  font-weight: 800;
  font-size: 6rem;
  color: var(--surface2);
  line-height: 1;
  pointer-events: none;
  transition: color 0.3s;
}

.pain-card:hover::before {
  color: rgba(200, 246, 94, 0.08);
}

.pain-icon {
  font-size: 2rem;
  margin-bottom: 20px;
}

.pain-title {
  font-family: 'Be Vietnam Pro', sans-serif;
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: 12px;
  color: var(--text);
}

.pain-desc {
  font-size: 0.82rem;
  line-height: 1.75;
  color: var(--muted);
}

/* HOW WE HELP */
.how-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
  margin-top: 60px;
}

.step-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.step-item {
  display: flex;
  gap: 20px;
  padding: 28px 0;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: padding-left 0.3s;
}

.step-item:hover {
  padding-left: 8px;
}

.step-num {
  font-family: 'Be Vietnam Pro', sans-serif;
  font-weight: 800;
  font-size: 0.75rem;
  color: var(--accent);
  width: 28px;
  flex-shrink: 0;
  padding-top: 3px;
}

.step-content {}

.step-title {
  font-family: 'Be Vietnam Pro', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 8px;
}

.step-desc {
  font-size: 0.8rem;
  line-height: 1.75;
  color: var(--muted);
}

.metric-stack {
  display: flex;
  flex-direction: column;
  gap: 16px;
  position: sticky;
  top: 110px;
}

.metric-card {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 28px 28px;
  transition: border-color 0.3s, transform 0.3s;
}

.metric-card:hover {
  border-color: var(--accent);
  transform: translateX(4px);
}

.metric-val {
  font-family: 'Be Vietnam Pro', sans-serif;
  font-weight: 800;
  font-size: 2.8rem;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 8px;
}

.metric-label {
  font-size: 0.8rem;
  color: var(--muted);
}

/* ============ PAGE 2 — UPLOAD ============ */
.upload-section {
  padding: 80px 80px;
}

.upload-hero {
  text-align: center;
  margin-bottom: 80px;
}

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

.upload-zone {
  border: 2px dashed var(--border);
  padding: 60px 40px;
  text-align: center;
  transition: border-color 0.3s, background 0.3s;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.upload-zone:hover,
.upload-zone.dragover {
  border-color: var(--accent);
  background: rgba(200, 246, 94, 0.03);
}

.upload-zone::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(200, 246, 94, 0.06) 0%, transparent 70%);
  opacity: 0;
  transition: opacity 0.3s;
}

.upload-zone:hover::before {
  opacity: 1;
}

.upload-icon {
  font-size: 3rem;
  margin-bottom: 20px;
  display: block;
}

.upload-title {
  font-family: 'Be Vietnam Pro', sans-serif;
  font-weight: 700;
  font-size: 1.2rem;
  margin-bottom: 10px;
}

.upload-sub {
  font-size: 0.78rem;
  color: var(--muted);
  line-height: 1.7;
}

.format-tags {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-top: 20px;
  flex-wrap: wrap;
}

.format-tag {
  background: var(--surface2);
  border: 1px solid var(--border);
  padding: 4px 10px;
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.upload-btn {
  display: block;
  width: 100%;
  background: var(--accent);
  color: #0a0a0a;
  padding: 18px;
  font-family: 'Be Vietnam Pro', sans-serif;
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  border: none;
  margin-top: 28px;
  cursor: pointer;
  transition: background 0.2s, transform 0.2s;
}

.upload-btn:hover {
  background: #d9ff7a;
  transform: translateY(-2px);
}

/* Meeting form */
.meeting-card {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 40px;
}

.meeting-title {
  font-family: 'Be Vietnam Pro', sans-serif;
  font-weight: 800;
  font-size: 1.4rem;
  margin-bottom: 8px;
}

.meeting-sub {
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 32px;
  line-height: 1.7;
}

.form-group {
  margin-bottom: 20px;
}

label {
  display: block;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 8px;
}

input,
select,
textarea {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 12px 16px;
  font-family: 'Be Vietnam Pro', sans-serif;
  font-size: 0.85rem;
  outline: none;
  transition: border-color 0.2s;
  cursor: auto;
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--accent);
}

textarea {
  resize: vertical;
  min-height: 100px;
}

select option {
  background: var(--bg);
}

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

.time-slot {
  background: var(--bg);
  border: 1px solid var(--border);
  padding: 10px;
  text-align: center;
  font-size: 0.75rem;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s, color 0.2s;
}

.time-slot:hover,
.time-slot.selected {
  border-color: var(--accent);
  background: rgba(200, 246, 94, 0.1);
  color: var(--accent);
}

/* ============ PAGE 3 — CASE STUDY ============ */
.case-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2px;
  background: var(--border);
  margin-top: 60px;
}

.case-card {
  background: var(--bg);
  padding: 48px 44px;
  position: relative;
  overflow: hidden;
  transition: background 0.3s;
}

.case-card:hover {
  background: var(--surface);
}

.case-industry {
  font-size: 0.65rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}

.case-company {
  font-family: 'Be Vietnam Pro', sans-serif;
  font-weight: 800;
  font-size: 1.5rem;
  margin-bottom: 16px;
}

.case-desc {
  font-size: 0.82rem;
  line-height: 1.8;
  color: var(--muted);
  margin-bottom: 28px;
}

.case-metrics {
  display: flex;
  gap: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

.case-metric-val {
  font-family: 'Be Vietnam Pro', sans-serif;
  font-weight: 800;
  font-size: 1.8rem;
  color: var(--accent);
  line-height: 1;
}

.case-metric-label {
  font-size: 0.7rem;
  color: var(--muted);
  margin-top: 4px;
}

.case-quote {
  background: var(--surface2);
  border-left: 2px solid var(--accent);
  padding: 16px 20px;
  margin-top: 24px;
  font-size: 0.8rem;
  line-height: 1.75;
  color: #bbb;
  font-style: italic;
}

.case-author {
  font-style: normal;
  color: var(--muted);
  font-size: 0.7rem;
  margin-top: 8px;
}

.featured-case {
  grid-column: 1 / -1;
  background: var(--surface);
  padding: 60px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
}

/* ============ PAGE 4 — CONTACT ============ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  padding: 80px 80px;
  min-height: calc(100vh - 90px);
  align-items: start;
}

.contact-left {}

.contact-big {
  font-family: 'Be Vietnam Pro', sans-serif;
  font-weight: 800;
  font-size: clamp(3rem, 5vw, 5rem);
  line-height: 0.9;
  letter-spacing: -0.03em;
  margin-bottom: 28px;
}

.contact-big .hl {
  color: var(--accent);
}

.contact-big .ital {
  font-family: 'Playfair Display', serif;
  font-style: italic;
  font-weight: 400;
}

.contact-sub {
  font-size: 0.88rem;
  line-height: 1.8;
  color: var(--muted);
  margin-bottom: 48px;
  max-width: 420px;
}

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

.contact-info-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  transition: border-color 0.3s;
  text-decoration: none;
  color: inherit;
}

.contact-info-item:hover {
  border-color: var(--accent);
}

.ci-icon {
  font-size: 1.2rem;
  flex-shrink: 0;
  padding-top: 2px;
}

.ci-label {
  font-size: 0.65rem;
  color: var(--muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 4px;
}

.ci-val {
  font-size: 0.88rem;
  color: var(--text);
}

.contact-form-card {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 48px 44px;
}

.contact-form-title {
  font-family: 'Be Vietnam Pro', sans-serif;
  font-weight: 800;
  font-size: 1.5rem;
  margin-bottom: 32px;
}

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

.submit-btn {
  width: 100%;
  background: var(--accent);
  color: #0a0a0a;
  padding: 18px;
  font-family: 'Be Vietnam Pro', sans-serif;
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  border: none;
  cursor: pointer;
  transition: background 0.2s, transform 0.2s;
  margin-top: 8px;
}

.submit-btn:hover {
  background: #d9ff7a;
  transform: translateY(-2px);
}

/* FOOTER */
footer {
  border-top: 1px solid var(--border);
  padding: 40px 80px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

footer .logo {
  font-size: 1rem;
}

.footer-copy {
  font-size: 0.72rem;
  color: var(--muted);
}

/* TOAST */
.toast {
  position: fixed;
  bottom: 32px;
  right: 32px;
  background: var(--accent);
  color: #0a0a0a;
  padding: 16px 24px;
  font-family: 'Be Vietnam Pro', sans-serif;
  font-weight: 700;
  font-size: 0.85rem;
  z-index: 1000;
  transform: translateY(100px);
  opacity: 0;
  transition: all 0.4s ease;
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

/* SCROLL ANIMATIONS */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

@media (max-width: 768px) {
  nav {
    padding: 16px 20px;
  }

  nav ul {
    display: none;
  }

  .hero,
  .two-col,
  .how-grid,
  .case-grid,
  .contact-grid,
  .form-row {
    grid-template-columns: 1fr;
  }

  .hero-left {
    padding: 40px 20px;
  }

  .section,
  .upload-section {
    padding: 60px 20px;
  }

  .featured-case {
    padding: 32px;
    grid-template-columns: 1fr;
  }

  footer {
    flex-direction: column;
    gap: 16px;
    text-align: center;
    padding: 32px 20px;
  }

  .contact-grid {
    padding: 60px 20px;
  }

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