/* ===========================
   PRESAGE — styles
   =========================== */

:root {
  --blue:      #3b82f6;
  --blue-dark: #1d4ed8;
  --blue-lt:   #60a5fa;
  --blue-pale: #eff6ff;
  --blue-mid:  #dbeafe;
  --slate:     #0f172a;
  --slate-mid: #1e293b;
  --slate-lt:  #334155;
  --muted:     #64748b;
  --muted-lt:  #94a3b8;
  --border:    #e2e8f0;
  --white:     #ffffff;
  --bg:        #f8fafc;
  --ff-serif:  'DM Sans', sans-serif;
  --ff-sans:   'Outfit', sans-serif;
  --transition: 0.3s ease;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  background: var(--white);
  color: var(--slate);
  font-family: var(--ff-sans);
  font-weight: 300;
  font-size: 16px;
  line-height: 1.7;
  overflow-x: hidden;
}

img { display: block; max-width: 100%; }
a  { color: inherit; text-decoration: none; }

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4 {
  font-family: var(--ff-serif);
  font-weight: 600;
  line-height: 1.15;
  color: var(--slate);
}
h1 { font-size: clamp(1.75rem, 4.5vw, 4rem); letter-spacing: -0.01em; }
h2 { font-size: clamp(1.7rem, 3vw, 2.8rem); }
h3 { font-size: clamp(1.1rem, 1.8vw, 1.5rem); }
h4 { font-size: 1.05rem; }
em { font-style: italic; color: var(--blue); }
p  { color: var(--muted); font-size: 1rem; line-height: 1.8; }

.label {
  font-family: var(--ff-sans);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--blue);
  display: block;
  margin-bottom: 0.9rem;
}
.label.light { color: var(--blue-lt); }
.label.dark  { color: var(--muted); }

/* ===== BUTTONS ===== */
.btn-primary {
  display: inline-block;
  padding: 0.85rem 2rem;
  background: var(--blue);
  color: var(--white);
  font-family: var(--ff-sans);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: 2px solid var(--blue);
  border-radius: 4px;
  transition: background var(--transition), color var(--transition);
}
.btn-primary:hover {
  background: var(--blue-dark);
  border-color: var(--blue-dark);
}
.btn-ghost {
  display: inline-block;
  padding: 0.85rem 2rem;
  background: transparent;
  color: var(--blue);
  font-family: var(--ff-sans);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: 2px solid var(--blue);
  border-radius: 4px;
  transition: background var(--transition), color var(--transition);
}
.btn-ghost:hover { background: var(--blue); color: var(--white); }
.btn-ghost-white {
  display: inline-block;
  padding: 0.85rem 2rem;
  background: transparent;
  color: var(--white);
  font-family: var(--ff-sans);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: 2px solid rgba(255,255,255,0.5);
  border-radius: 4px;
  transition: background var(--transition), border-color var(--transition);
}
.btn-ghost-white:hover { background: rgba(255,255,255,0.15); border-color: white; }
.btn-full { width: 100%; text-align: center; cursor: pointer; }

/* ===== NAV ===== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.3rem 5vw;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background var(--transition), border-color var(--transition), padding var(--transition);
}
.nav.scrolled {
  background: rgba(255,255,255,0.97);
  border-bottom-color: var(--border);
  padding: 0.85rem 5vw;
  box-shadow: 0 1px 16px rgba(15,23,42,0.07);
}
.nav-logo {
  font-family: var(--ff-sans);
  font-size: 2.2rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--white);
  transition: color var(--transition);
}
.nav.scrolled .nav-logo { color: var(--blue); }
.nav-logo span { color: inherit; }

.nav-links {
  list-style: none;
  display: flex;
  gap: 2.5rem;
  align-items: center;
}
.nav-links a {
  font-size: 0.8rem;
  font-weight: 400;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.85);
  position: relative;
  transition: color var(--transition);
}
.nav.scrolled .nav-links a { color: var(--muted); }
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 2px;
  background: var(--blue);
  transition: width var(--transition);
  border-radius: 2px;
}
.nav-links a:hover, .nav-links a.active { color: var(--blue); }
.nav.scrolled .nav-links a:hover,
.nav.scrolled .nav-links a.active { color: var(--blue); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }

.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 0;
  border: 1.5px solid rgba(255,255,255,0.45);
  border-radius: 6px;
  overflow: hidden;
  margin-left: 1.5rem;
  flex-shrink: 0;
  text-transform: none;
  letter-spacing: 0;
}
.nav.scrolled .lang-switch { border-color: var(--blue); }
.lang-switch a {
  padding: 0.28rem 0.65rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: rgba(255,255,255,0.85);
  text-transform: none;
  letter-spacing: 0.02em;
  transition: background 0.18s, color 0.18s;
  line-height: 1;
}
.lang-switch a:hover { background: rgba(255,255,255,0.12); color: white; }
.lang-switch a.active { background: var(--blue); color: white; }
.nav.scrolled .lang-switch a { color: var(--muted); }
.nav.scrolled .lang-switch a.active { background: var(--blue); color: white; }
.nav.scrolled .lang-switch a:hover { background: rgba(59,130,246,0.1); color: var(--blue); }
.lang-switch a::after { display: none; }
.lang-div { width: 1px; background: rgba(255,255,255,0.35); align-self: stretch; }
.nav.scrolled .lang-div { background: var(--blue); opacity: 0.35; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 24px; height: 2px;
  background: var(--white);
  transition: all var(--transition);
  border-radius: 2px;
}
.nav.scrolled .nav-toggle span { background: var(--slate); }

/* ===== HERO ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--slate);
}
.hero-bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, rgba(15,23,42,0.95) 45%, rgba(29,78,216,0.4) 100%);
  z-index: 0;
}
.hero-grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(59,130,246,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59,130,246,0.06) 1px, transparent 1px);
  background-size: 60px 60px;
  z-index: 1;
}
.hero-content {
  position: relative;
  z-index: 2;
  padding: 5rem 0 0 8vw;
  max-width: calc(680px + 8vw);
  animation: fadeUp 1s ease 0.2s both;
}
.hero-telemetry {
  animation: fadeUp 1s ease 0.4s both;
}
.telemetry-label {
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(99,179,237,0.7);
  margin-bottom: 0.75rem;
  text-align: center;
}
.sensor-grid-hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.plot-container-hero {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: 8px;
  padding: 10px 12px;
}
.plot-container-hero h3 {
  margin: 0 0 6px;
  color: rgba(255,255,255,0.55);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-align: center;
}
.hero-tag {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--blue-lt);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.hero-tag::before {
  content: '';
  display: block;
  width: 32px; height: 2px;
  background: var(--blue);
  border-radius: 2px;
}
.hero-title {
  font-family: var(--ff-sans);
  font-size: clamp(1.75rem, 4.5vw, 4rem);
  font-weight: 600;
  line-height: 1.1;
  color: var(--white);
  margin-bottom: 1.2rem;
}
.hero-title em { color: var(--blue-lt); font-style: italic; }
.hero-sub {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.65);
  margin-bottom: 2.5rem;
  max-width: 560px;
  line-height: 1.75;
}
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }
.hero-scroll {
  position: absolute;
  bottom: 2.5rem; right: 5vw;
  z-index: 2;
  font-size: 0.68rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.35);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.scroll-line {
  display: block;
  width: 50px; height: 1px;
  background: var(--blue);
  animation: pulse 2s ease-in-out infinite;
}

/* ===== PAGE HERO ===== */
.page-hero {
  position: relative;
  min-height: 40vh;
  display: flex;
  align-items: flex-end;
  background: var(--slate);
  padding: 7rem 8vw 4rem;
  border-bottom: 1px solid rgba(255,255,255,0.07);
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(59,130,246,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59,130,246,0.05) 1px, transparent 1px);
  background-size: 60px 60px;
}
.page-hero-content {
  position: relative;
  z-index: 1;
  animation: fadeUp 0.8s ease 0.1s both;
}
.page-hero-content h1 { color: var(--white); margin-bottom: 0.5rem; }
.page-hero-content p { color: rgba(255,255,255,0.55); font-size: 1.1rem; margin-top: 0.5rem; }

/* ===== SECTIONS ===== */
.section-white  { background: var(--white);    padding: 6rem 8vw; }
.section-light  { background: var(--bg);       padding: 6rem 8vw; border-top: 1px solid var(--border); }
.section-blue   { background: var(--blue);     padding: 6rem 8vw; }
.section-dark   { background: var(--slate);    padding: 6rem 8vw; }
.section-mid    { background: var(--slate-mid);padding: 6rem 8vw; }

.section-header { text-align: center; margin-bottom: 4rem; }
.section-header p.label { display: block; }
.section-header h2 { color: var(--slate); }
.section-dark .section-header h2,
.section-mid  .section-header h2 { color: var(--white); }

/* ===== SPLIT ===== */
.section-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 560px;
}
.split-image { overflow: hidden; }
.split-image img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.8s ease; }
.split-image:hover img { transform: scale(1.03); }
.split-content {
  padding: 6rem 5vw;
  background: var(--white);
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1.2rem;
}
.split-content.dark {
  background: var(--slate);
}
.split-content.dark h2 { color: var(--white); }
.split-content .btn-primary,
.split-content .btn-ghost { align-self: flex-start; margin-top: 0.5rem; }

/* ===== STATS ===== */
.stats-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.stat-item {
  padding: 2.5rem 2rem;
  text-align: center;
  border-right: 1px solid var(--border);
}
.stat-item:last-child { border-right: none; }
.stat-item h3 {
  font-family: var(--ff-serif);
  font-size: 2.6rem;
  font-weight: 600;
  color: var(--blue);
  margin-bottom: 0.25rem;
  line-height: 1;
}
.stat-item p { font-size: 0.82rem; color: var(--muted); letter-spacing: 0.04em; }

/* dark variant */
.stats-strip.dark {
  border-color: rgba(255,255,255,0.1);
}
.stats-strip.dark .stat-item {
  border-right-color: rgba(255,255,255,0.1);
}
.stats-strip.dark .stat-item h3 { color: var(--blue-lt); }
.stats-strip.dark .stat-item p   { color: rgba(255,255,255,0.5); }

/* ===== KNOWLEDGE TRANSFER GRID ===== */
.knowledge-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.under-hood-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
}

/* ===== CARDS ===== */
.cards-header { text-align: center; margin-bottom: 3.5rem; }
.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 2.5rem 2rem;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.card:hover {
  border-color: var(--blue);
  box-shadow: 0 4px 24px rgba(59,130,246,0.1);
}
.card-icon {
  width: 44px; height: 44px;
  background: var(--blue-pale);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 1.5rem;
  font-size: 1.3rem;
  color: var(--blue);
}
.card h3 { color: var(--slate); margin-bottom: 0.65rem; font-size: 1.1rem; }
.cards-cta { text-align: center; margin-top: 3rem; }

/* dark cards */
.cards-grid.dark .card {
  background: var(--slate-mid);
  border-color: rgba(255,255,255,0.08);
}
.cards-grid.dark .card:hover {
  border-color: var(--blue);
}
.cards-grid.dark .card h3 { color: var(--white); }
.cards-grid.dark .card-icon { background: rgba(59,130,246,0.15); }

/* ===== FEATURE LIST ===== */
.feature-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 0.5rem;
}
.feature-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}
.feature-dot {
  width: 20px; height: 20px;
  background: var(--blue-pale);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  margin-top: 0.15rem;
}
.feature-dot::after {
  content: '';
  width: 7px; height: 7px;
  background: var(--blue);
  border-radius: 50%;
}
.feature-item p { font-size: 0.95rem; }

/* ===== PHASES ===== */
.phases-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}
.phase-card {
  padding: 2.5rem 2rem;
  border-right: 1px solid var(--border);
  background: var(--white);
  position: relative;
}
.phase-card:last-child { border-right: none; }
.phase-number {
  font-family: var(--ff-serif);
  font-size: 2.5rem;
  font-weight: 300;
  color: var(--blue-mid);
  margin-bottom: 1rem;
  line-height: 1;
}
.phase-card h3 { font-size: 1rem; color: var(--slate); margin-bottom: 0.6rem; }

/* dark phases */
.phases-grid.dark {
  border-color: rgba(255,255,255,0.08);
}
.phases-grid.dark .phase-card {
  background: var(--slate-mid);
  border-right-color: rgba(255,255,255,0.08);
}
.phases-grid.dark .phase-card h3 { color: var(--white); }
.phases-grid.dark .phase-number   { color: rgba(59,130,246,0.3); }

/* ===== PRINCIPLES ===== */
.principles-list {
  display: flex;
  flex-direction: column;
  gap: 1px;
  background: var(--border);
  border-radius: 8px;
  overflow: hidden;
  max-width: 800px;
  margin: 0 auto;
}
.principle-item {
  background: var(--white);
  display: flex;
  gap: 1.5rem;
  padding: 1.75rem 2rem;
  align-items: flex-start;
}
.principle-mark {
  width: 28px; height: 28px;
  background: var(--blue);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  margin-top: 0.2rem;
}
.principle-mark::after {
  content: '';
  width: 10px; height: 2px;
  background: white;
  border-radius: 2px;
}
.principle-item h3 { color: var(--slate); margin-bottom: 0.3rem; font-size: 1.05rem; }

/* ===== WHO GRID ===== */
.who-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.who-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 2.5rem 2rem;
}
.who-icon { font-size: 2rem; margin-bottom: 1.2rem; }
.who-card h3 { color: var(--slate); margin-bottom: 0.6rem; }
.who-list { list-style: none; margin-top: 1.2rem; display: flex; flex-direction: column; gap: 0.5rem; }
.who-list li {
  font-size: 0.88rem;
  color: var(--muted);
  padding-left: 1.1rem;
  position: relative;
}
.who-list li::before { content: ''; position: absolute; left: 0; top: 0.6em; width: 6px; height: 6px; background: var(--blue); border-radius: 50%; }

/* ===== INDUSTRIES ===== */
.industries-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.industry-card {
  background: var(--slate-mid);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: 8px;
  padding: 2rem;
  transition: border-color var(--transition);
}
.industry-card:hover { border-color: var(--blue); }
.industry-card h3 { color: var(--white); margin-bottom: 0.5rem; font-size: 1.05rem; }
.industry-card p  { color: rgba(255,255,255,0.5); font-size: 0.9rem; }
.industry-stat {
  display: inline-block;
  margin-top: 1rem;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--blue-lt);
  background: rgba(59,130,246,0.12);
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
}

/* ===== USE CASES ===== */
.use-cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.use-case-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 2rem;
  border-top: 3px solid var(--blue);
}
.use-case-card h3 { color: var(--slate); margin-bottom: 0.5rem; font-size: 1rem; }

/* ===== CTA SECTION ===== */
.section-cta {
  background: var(--slate);
  padding: 7rem 8vw;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}
.section-cta h2 { color: var(--white); max-width: 600px; }
.section-cta p  { color: rgba(255,255,255,0.55); max-width: 500px; }
.section-cta .cta-buttons { display: flex; gap: 1rem; flex-wrap: wrap; justify-content: center; }

/* blue cta */
.section-cta.blue { background: var(--blue); }
.section-cta.blue h2 { color: var(--white); }
.section-cta.blue p  { color: rgba(255,255,255,0.75); }

/* ===== TEAM ===== */
.team-grid {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}
.team-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 10px;
  display: grid;
  grid-template-columns: 300px 1fr;
  overflow: hidden;
  box-shadow: 0 2px 16px rgba(15,23,42,0.05);
}
.team-photo { overflow: hidden; }
.team-photo img {
  width: 100%; height: 100%;
  min-height: 300px;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.team-card:hover .team-photo img { transform: scale(1.03); }
.team-info {
  padding: 3rem;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}
.team-info h3 { color: var(--slate); margin-bottom: 0; font-size: 1.6rem; }
.team-role {
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--blue);
}
.team-expertise {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.75rem;
}
.team-expertise span {
  background: var(--blue-pale);
  color: var(--blue-dark);
  border-radius: 20px;
  padding: 0.3rem 0.85rem;
  font-size: 0.75rem;
  font-weight: 500;
}
.team-links { display: flex; gap: 0.75rem; margin-top: 0.5rem; }
.team-links a {
  font-size: 0.78rem;
  color: var(--blue);
  font-weight: 500;
  display: flex; align-items: center; gap: 0.3rem;
  transition: color var(--transition);
}
.team-links a:hover { color: var(--blue-dark); }

/* ===== CONTACT ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 5rem;
  align-items: start;
}
.contact-info { display: flex; flex-direction: column; gap: 1.2rem; }
.contact-details { display: flex; flex-direction: column; gap: 1.5rem; margin-top: 1rem; }
.contact-detail-item { display: flex; gap: 1rem; align-items: flex-start; }
.detail-icon {
  width: 36px; height: 36px;
  background: var(--blue-pale);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  color: var(--blue);
  font-size: 0.9rem;
  flex-shrink: 0;
}
.contact-detail-item strong { display: block; color: var(--slate); margin-bottom: 0.2rem; font-size: 0.88rem; }
.contact-detail-item p { font-size: 0.9rem; }
.contact-detail-item a { color: var(--blue); }
.contact-detail-item a:hover { color: var(--blue-dark); }

.contact-form { display: flex; flex-direction: column; gap: 1.25rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; }
.form-group { display: flex; flex-direction: column; gap: 0.4rem; }
.form-group label {
  font-size: 0.73rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}
.form-group input:not([type="checkbox"]),
.form-group select,
.form-group textarea {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--slate);
  padding: 0.8rem 1rem;
  font-family: var(--ff-sans);
  font-size: 0.95rem;
  font-weight: 400;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  width: 100%;
  appearance: none;
}
.form-check input[type="checkbox"] {
  appearance: auto;
  width: 1.1rem;
  height: 1.1rem;
  accent-color: var(--blue);
  cursor: pointer;
  flex-shrink: 0;
  margin-top: 0.25rem;
}
.form-group input:not([type="checkbox"]):focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(59,130,246,0.12);
}
.form-group textarea { resize: vertical; min-height: 120px; }
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--muted-lt); }
.form-check { flex-direction: row; align-items: flex-start; gap: 0.75rem; }
.form-check label { font-size: 0.82rem; text-transform: none; letter-spacing: 0; color: var(--muted); line-height: 1.5; }
.form-check a { color: var(--blue); }

.form-success {
  display: none;
  background: #f0fdf4;
  border: 1px solid #86efac;
  color: #166534;
  padding: 1rem;
  font-size: 0.9rem;
  text-align: center;
  border-radius: 6px;
}
.form-success.show { display: block; }

/* ===== ROI CALCULATOR ===== */
.calc-wrap {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 32px rgba(15,23,42,0.08);
}
.calc-header {
  background: var(--blue);
  padding: 2rem 2.5rem;
  color: white;
}
.calc-header h3 { color: white; font-size: 1.3rem; margin-bottom: 0.25rem; }
.calc-header p  { color: rgba(255,255,255,0.75); font-size: 0.9rem; }
.calc-body { display: grid; grid-template-columns: 1fr 1fr; gap: 0; }
.calc-inputs { padding: 2rem 2.5rem; border-right: 1px solid var(--border); }
.calc-results { padding: 2rem 2.5rem; background: var(--blue-pale); }
.calc-section-title {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 1.25rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--blue-mid);
}
.calc-field { margin-bottom: 1.25rem; }
.calc-field-label-row {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin-bottom: 0.4rem;
}
.calc-field-label-row label { margin-bottom: 0; }
.tooltip-wrap {
  position: relative;
  display: inline-flex;
  align-items: center;
}
.tooltip-icon {
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--blue-mid);
  color: var(--blue);
  font-size: 0.65rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: default;
  flex-shrink: 0;
  line-height: 1;
  font-family: var(--ff-sans);
}
.tooltip-box {
  display: none;
  position: absolute;
  left: 50%;
  bottom: calc(100% + 7px);
  transform: translateX(-50%);
  background: var(--slate);
  color: white;
  font-size: 0.72rem;
  line-height: 1.45;
  padding: 0.6rem 0.85rem;
  border-radius: 6px;
  width: 210px;
  z-index: 100;
  pointer-events: none;
  font-weight: 400;
  text-transform: none;
  letter-spacing: 0;
}
.tooltip-box::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 5px solid transparent;
  border-top-color: var(--slate);
}
.tooltip-wrap:hover .tooltip-box,
.tooltip-wrap:focus-within .tooltip-box { display: block; }
.calc-bench-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.78rem;
  margin-top: 0.75rem;
}
.calc-bench-table th {
  text-align: left;
  font-weight: 600;
  color: var(--blue);
  padding: 0.35rem 0.5rem;
  border-bottom: 1px solid var(--blue-mid);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
}
.calc-bench-table td {
  padding: 0.35rem 0.5rem;
  color: var(--slate);
  border-bottom: 1px solid var(--border);
}
.calc-bench-table tr:last-child td { border-bottom: none; }
.calc-bench-table tr.bench-active td { background: var(--blue-pale); font-weight: 500; }
.calc-alt-row {
  display: flex;
  gap: 0.5rem;
  align-items: flex-start;
  margin-bottom: 0.5rem;
}
.calc-alt-row .calc-field { flex: 1; margin-bottom: 0; }
.calc-alt-sep {
  font-size: 0.72rem;
  color: var(--muted);
  padding-top: 2.2rem;
  flex-shrink: 0;
}
.calc-btn {
  width: 100%;
  padding: 0.9rem 1.5rem;
  background: var(--blue);
  color: white;
  border: none;
  border-radius: 8px;
  font-family: var(--ff-sans);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  margin-top: 1.5rem;
  letter-spacing: 0.03em;
  transition: background var(--transition), transform 0.1s;
}
.calc-btn:hover { background: #2563eb; }
.calc-btn:active { transform: scale(0.99); }
.calc-results-hidden { opacity: 0.35; pointer-events: none; filter: blur(2px); transition: all 0.3s; }
.calc-results-visible { opacity: 1; pointer-events: auto; filter: none; transition: all 0.3s; }
.calc-field label {
  display: block;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--muted);
  margin-bottom: 0.4rem;
}
.req { color: #dc2626; margin-left: 2px; font-weight: 700; }
.calc-field input[type="number"],
.calc-field select {
  width: 100%;
  padding: 0.7rem 1rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--white);
  font-family: var(--ff-sans);
  font-size: 0.95rem;
  color: var(--slate);
  outline: none;
  transition: border-color var(--transition);
  appearance: none;
}
.calc-field input[type="number"]:focus,
.calc-field select:focus { border-color: var(--blue); }
.calc-field input[type="range"] {
  width: 100%;
  accent-color: var(--blue);
  margin-top: 0.4rem;
}
.calc-range-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.72rem;
  color: var(--muted-lt);
  margin-top: 0.2rem;
}
.calc-result-item {
  background: var(--white);
  border-radius: 8px;
  padding: 1.25rem 1.5rem;
  margin-bottom: 1rem;
  border: 1px solid var(--blue-mid);
}
.calc-result-item:last-child { margin-bottom: 0; }
.calc-result-label {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.3rem;
}
.calc-result-value {
  font-family: var(--ff-serif);
  font-size: 1.8rem;
  font-weight: 600;
  color: var(--blue);
  line-height: 1.1;
}
.calc-result-value.highlight { color: #16a34a; }
.calc-result-sub { font-size: 0.78rem; color: var(--muted); margin-top: 0.2rem; }
.calc-disclaimer {
  font-size: 0.72rem;
  color: var(--muted-lt);
  text-align: center;
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  padding-left: 2.5rem; padding-right: 2.5rem; padding-bottom: 1.5rem;
}

/* ===== PROJECTS ===== */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.project-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 2rem;
  transition: box-shadow var(--transition), border-color var(--transition);
}
.project-card:hover { border-color: var(--blue); box-shadow: 0 4px 24px rgba(59,130,246,0.1); }
.project-card-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1rem; }
.project-badge {
  font-size: 0.65rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase;
  padding: 0.2rem 0.65rem; border-radius: 20px;
}
.project-badge.active { background: #dcfce7; color: #166534; }
.project-badge.pilot  { background: var(--blue-pale); color: var(--blue-dark); }
.project-year { font-size: 0.75rem; color: var(--muted-lt); }
.project-sector-label {
  font-size: 0.7rem; font-weight: 500; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--blue); margin-bottom: 0.4rem;
}
.project-card h3 { color: var(--slate); margin-bottom: 0.6rem; font-size: 1.2rem; }
.project-metrics { display: flex; gap: 1.5rem; margin-top: 1.5rem; padding-top: 1.25rem; border-top: 1px solid var(--border); }
.metric { display: flex; flex-direction: column; }
.metric strong { font-family: var(--ff-serif); font-size: 1.3rem; font-weight: 600; color: var(--blue); }
.metric span { font-size: 0.72rem; color: var(--muted-lt); }

/* ===== FOOTER ===== */
.footer {
  background: var(--slate);
  padding: 4rem 8vw 2rem;
}
.footer-top {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 3rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-brand .nav-logo { color: var(--white); font-size: 1rem; }
.footer-brand p { font-size: 0.85rem; color: rgba(255,255,255,0.4); margin-top: 0.5rem; line-height: 1.6; }
.footer-col h4 {
  font-family: var(--ff-sans);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.4);
  margin-bottom: 1rem;
}
.footer-col a {
  display: block;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.6);
  margin-bottom: 0.6rem;
  transition: color var(--transition);
}
.footer-col a:hover { color: var(--white); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 1.5rem;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-copy { font-size: 0.75rem; color: rgba(255,255,255,0.3); }
.footer-bottom-links { display: flex; gap: 1.5rem; }
.footer-bottom-links a { font-size: 0.75rem; color: rgba(255,255,255,0.3); transition: color var(--transition); }
.footer-bottom-links a:hover { color: rgba(255,255,255,0.6); }

/* ===== ANIMATIONS ===== */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes pulse {
  0%, 100% { opacity: 0.4; }
  50%       { opacity: 1; }
}

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ===== RESPONSIVE ===== */
@media (max-width: 1100px) {
  .stats-strip { grid-template-columns: repeat(2, 1fr); }
  .stats-strip .stat-item:nth-child(2) { border-right: none; }
  .stats-strip .stat-item:nth-child(3) { border-top: 1px solid var(--border); }
  .stat-item { padding: 1.2rem 1rem; }
  .stat-item h3 { font-size: 1.8rem; }
  .phases-grid { grid-template-columns: 1fr 1fr; }
  .phases-grid .phase-card:nth-child(2) { border-right: none; }
  .phases-grid .phase-card:nth-child(3) { border-top: 1px solid var(--border); border-right: 1px solid var(--border); }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .industries-grid { grid-template-columns: 1fr 1fr; }
  .use-cases-grid  { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 900px) {
  .nav-links { display: none; flex-direction: column; position: fixed; inset: 0; background: var(--slate); align-items: center; justify-content: center; gap: 2rem; }
  .nav-links.open { display: flex; }
  .nav-links.open a { color: rgba(255,255,255,0.8); font-size: 1rem; }
  .nav-toggle { display: flex; z-index: 200; }
  .section-split { grid-template-columns: 1fr; }
  .split-image { height: 320px; }
  .img-last { order: 2; }
  .cards-grid { grid-template-columns: 1fr; }
  .who-grid  { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; gap: 3rem; }
  .knowledge-grid { grid-template-columns: 1fr; gap: 2rem; }
  .under-hood-grid { grid-template-columns: 1fr; gap: 2rem; }
  .team-card { grid-template-columns: 1fr; }
  .team-photo img { min-height: 280px; }
  .calc-body { grid-template-columns: 1fr; }
  .calc-inputs { border-right: none; border-bottom: 1px solid var(--border); }
  .projects-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  .phases-grid { grid-template-columns: 1fr; }
  .phases-grid .phase-card { border-right: none; border-top: 1px solid var(--border); }
  .phases-grid .phase-card:first-child { border-top: none; }
  .projects-grid { grid-template-columns: 1fr; }
  .industries-grid { grid-template-columns: 1fr; }
  .use-cases-grid  { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; }
  .hero-actions a { text-align: center; }
  .footer-top { grid-template-columns: 1fr; }
  .stats-strip { grid-template-columns: 1fr 1fr; }
  .section-cta .cta-buttons { flex-direction: column; align-items: center; }
}

/* ===== HINDI / DEVANAGARI OVERRIDES ===== */
[lang="hi"] .calc-section-title,
[lang="hi"] .label,
[lang="hi"] .nav-links a,
[lang="hi"] .footer-col a,
[lang="hi"] .footer-col h4,
[lang="hi"] .form-group label,
[lang="hi"] .form-check label,
[lang="hi"] .project-sector-label,
[lang="hi"] .stat-item p,
[lang="hi"] .who-list li,
[lang="hi"] .metric span,
[lang="hi"] .phase-label,
[lang="hi"] .industry-card p,
[lang="hi"] .project-year {
  letter-spacing: 0;
  text-transform: none;
}
[lang="hi"] .calc-section-title {
  font-size: 1rem;
}
[lang="hi"] .calc-field-label-row label,
[lang="hi"] .calc-field > label {
  font-size: 0.95rem;
}
[lang="hi"] .label {
  font-size: 1rem;
}
[lang="hi"] .nav-links a {
  font-size: 1rem;
}
[lang="hi"] .form-group label {
  font-size: 0.9rem;
}
[lang="hi"] .form-check label {
  font-size: 0.9rem;
}
[lang="hi"] .calc-field select option,
[lang="hi"] .form-group select option {
  font-size: 0.95rem;
}
[lang="hi"] .project-sector-label {
  font-size: 0.9rem;
}
[lang="hi"] .who-list li {
  font-size: 1rem;
}
[lang="hi"] .who-card h3,
[lang="hi"] .who-card p {
  font-size: 1rem;
}
[lang="hi"] .stat-item p {
  font-size: 0.95rem;
}
[lang="hi"] .metric span {
  font-size: 0.85rem;
}
[lang="hi"] .industry-card p {
  font-size: 1rem;
}
[lang="hi"] .project-year {
  font-size: 0.85rem;
}