/* ==========================================
   ENO RIVER AI — MAIN STYLESHEET
   ========================================== */

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

:root {
  --navy:    #0D1B2A;
  --dark:    #111827;
  --mid:     #1E2D40;
  --accent:  #00C2FF;
  --accent2: #7B5CFA;
  --green:   #00D4A0;
  --light:   #F8FAFC;
  --gray:    #64748B;
  --border:  #E2E8F0;
  --white:   #FFFFFF;
  --radius:  12px;
  --shadow:  0 4px 24px rgba(0,0,0,.08);
  --shadow-lg: 0 12px 48px rgba(0,0,0,.14);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', sans-serif;
  background: var(--white);
  color: var(--dark);
  line-height: 1.6;
  font-size: 16px;
}

.container { max-width: 1140px; margin: 0 auto; padding: 0 24px; }

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

/* ---- TYPOGRAPHY ---- */
h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); font-weight: 800; line-height: 1.12; }
h2 { font-size: clamp(1.7rem, 3.5vw, 2.5rem); font-weight: 700; line-height: 1.2; }
h3 { font-size: 1.2rem; font-weight: 600; }
h4 { font-size: 0.95rem; font-weight: 600; text-transform: uppercase; letter-spacing: .06em; }
p { color: var(--gray); }

.gradient-text {
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ---- BUTTONS ---- */
.btn-primary {
  display: inline-block;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: var(--white);
  padding: 14px 32px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: none;
  transition: transform .2s, box-shadow .2s;
  text-align: center;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(0,194,255,.35); }

.btn-secondary {
  display: inline-block;
  background: transparent;
  color: var(--white);
  padding: 13px 30px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 2px solid rgba(255,255,255,.4);
  transition: border-color .2s, background .2s;
}
.btn-secondary:hover { border-color: var(--white); background: rgba(255,255,255,.08); }

.btn-full { width: 100%; }

.btn-nav {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: var(--white) !important;
  padding: 10px 22px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.9rem;
  transition: transform .2s;
}
.btn-nav:hover { transform: translateY(-1px); }

/* ---- SECTION HEADER ---- */
.section-header { text-align: center; max-width: 640px; margin: 0 auto 56px; }
.section-header h2 { margin: 10px 0 16px; color: var(--dark); }
.section-header p { font-size: 1.05rem; }
.section-tag {
  display: inline-block;
  background: linear-gradient(135deg, rgba(0,194,255,.12), rgba(123,92,250,.12));
  color: var(--accent2);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  padding: 6px 14px;
  border-radius: 50px;
}

/* ==========================================
   NAVBAR
   ========================================== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow .3s;
}
.navbar.scrolled { box-shadow: var(--shadow); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.logo { font-size: 1.3rem; font-weight: 800; color: var(--dark); display: flex; align-items: center; gap: 6px; }
.logo-icon { color: var(--accent); font-size: 1rem; }
.logo-accent { color: var(--accent); }
.logo-light { color: var(--white); }
.logo-light .logo-icon { color: var(--accent); }

.nav-links { list-style: none; display: flex; align-items: center; gap: 32px; }
.nav-links a { font-size: 0.92rem; font-weight: 500; color: var(--dark); transition: color .2s; }
.nav-links a:not(.btn-nav):hover { color: var(--accent2); }

.hamburger { display: none; background: none; border: none; font-size: 1.5rem; cursor: pointer; color: var(--dark); }

.mobile-menu {
  display: none;
  flex-direction: column;
  list-style: none;
  padding: 16px 24px 20px;
  border-top: 1px solid var(--border);
  gap: 12px;
}
.mobile-menu.open { display: flex; }
.mobile-menu a { font-size: 1rem; font-weight: 500; color: var(--dark); }

/* ==========================================
   HERO
   ========================================== */
.hero {
  position: relative;
  background: linear-gradient(135deg, var(--navy) 0%, var(--mid) 60%, #1a1040 100%);
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 68px;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 80% 20%, rgba(0,194,255,.18) 0%, transparent 60%),
    radial-gradient(ellipse 50% 60% at 20% 80%, rgba(123,92,250,.2) 0%, transparent 60%);
  pointer-events: none;
}
.hero-content { position: relative; z-index: 1; padding: 80px 0 100px; }
.hero-badge {
  display: inline-block;
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.18);
  color: rgba(255,255,255,.8);
  font-size: 0.82rem;
  font-weight: 500;
  padding: 7px 16px;
  border-radius: 50px;
  margin-bottom: 28px;
}
.hero h1 { color: var(--white); max-width: 780px; margin-bottom: 24px; }
.hero-sub { font-size: 1.15rem; max-width: 580px; color: rgba(255,255,255,.7); margin-bottom: 40px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 72px; }
.hero-stats { display: flex; align-items: center; gap: 32px; flex-wrap: wrap; }
.stat { display: flex; flex-direction: column; }
.stat-num { font-size: 1.9rem; font-weight: 800; color: var(--white); line-height: 1; }
.stat-label { font-size: 0.8rem; color: rgba(255,255,255,.55); margin-top: 4px; text-transform: uppercase; letter-spacing: .05em; }
.stat-divider { width: 1px; height: 40px; background: rgba(255,255,255,.15); }

/* ==========================================
   TRUST BAR
   ========================================== */
.trust-bar { padding: 36px 0; background: var(--light); border-bottom: 1px solid var(--border); }
.trust-label { text-align: center; font-size: 0.78rem; text-transform: uppercase; letter-spacing: .1em; color: var(--gray); margin-bottom: 20px; }
.trust-logos { display: flex; justify-content: center; align-items: center; flex-wrap: wrap; gap: 16px 40px; }
.trust-logo {
  font-size: 0.9rem;
  font-weight: 700;
  color: #9BACC0;
  letter-spacing: .03em;
  text-transform: uppercase;
  transition: color .2s;
}
.trust-logo:hover { color: var(--accent2); }

/* ==========================================
   SERVICES
   ========================================== */
.services { padding: 100px 0; background: var(--white); }
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.service-card {
  position: relative;
  background: var(--light);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 28px;
  transition: transform .2s, box-shadow .2s;
}
.service-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.service-card.featured {
  background: linear-gradient(135deg, var(--navy), var(--mid));
  border-color: transparent;
  color: var(--white);
}
.service-card.featured p { color: rgba(255,255,255,.7); }
.service-card.featured .service-link { color: var(--accent); }
.service-badge {
  position: absolute;
  top: -12px; right: 20px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: var(--white);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .07em;
  padding: 4px 12px;
  border-radius: 50px;
}
.service-icon { font-size: 2rem; margin-bottom: 16px; }
.service-card h3 { color: var(--dark); margin-bottom: 10px; }
.service-card.featured h3 { color: var(--white); }
.service-card p { font-size: 0.93rem; line-height: 1.65; }
.service-link { display: inline-block; margin-top: 18px; font-size: 0.88rem; font-weight: 600; color: var(--accent2); }

/* ==========================================
   PORTFOLIO
   ========================================== */
.portfolio { padding: 100px 0; background: var(--light); }
.portfolio-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.portfolio-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  transition: transform .2s, box-shadow .2s;
}
.portfolio-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }

.portfolio-img {
  position: relative;
  height: 220px;
  overflow: hidden;
}
.pf-realty  { background: linear-gradient(135deg, #1a3a5c, #2d6a9f); }
.pf-brew    { background: linear-gradient(135deg, #3d1c02, #a0450f); }
.pf-health  { background: linear-gradient(135deg, #083d2f, #0e7c58); }
.pf-solar   { background: linear-gradient(135deg, #1c3a1a, #3a8c1a); }

/* Browser chrome mockup overlay */
.portfolio-img::before {
  content: '● ● ●';
  position: absolute;
  top: 0; left: 0; right: 0;
  background: rgba(0,0,0,.3);
  color: rgba(255,255,255,.5);
  font-size: 0.6rem;
  letter-spacing: 4px;
  padding: 8px 12px;
}
/* Screen lines */
.portfolio-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    rgba(255,255,255,.03) 0px,
    rgba(255,255,255,.03) 1px,
    transparent 1px,
    transparent 40px
  );
}

.portfolio-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,.55);
  opacity: 0;
  transition: opacity .25s;
}
.portfolio-card:hover .portfolio-overlay { opacity: 1; }
.portfolio-overlay span { color: var(--white); font-weight: 600; font-size: 0.95rem; }

.portfolio-info { padding: 24px; }
.portfolio-tag { font-size: 0.75rem; font-weight: 600; color: var(--accent2); text-transform: uppercase; letter-spacing: .07em; }
.portfolio-info h3 { margin: 8px 0 8px; color: var(--dark); }
.portfolio-info p { font-size: 0.9rem; margin-bottom: 14px; }
.portfolio-metrics { display: flex; gap: 16px; flex-wrap: wrap; }
.portfolio-metrics span {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--green);
  background: rgba(0,212,160,.08);
  padding: 3px 10px;
  border-radius: 50px;
}
.portfolio-cta { text-align: center; margin-top: 52px; }

/* ==========================================
   ABOUT
   ========================================== */
.about { padding: 100px 0; background: var(--white); }
.about-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 72px; align-items: center; }
.about-text .section-tag { margin-bottom: 16px; display: inline-block; }
.about-text h2 { color: var(--dark); margin: 10px 0 20px; }
.about-text p { font-size: 1rem; line-height: 1.75; margin-bottom: 16px; }
.about-list { list-style: none; margin: 24px 0 36px; display: flex; flex-direction: column; gap: 10px; }
.about-list li { font-size: 0.95rem; font-weight: 500; color: var(--dark); }

.about-visual { display: flex; align-items: center; justify-content: center; }
.about-card-stack { position: relative; width: 320px; height: 320px; }
.about-card {
  position: absolute;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 16px;
  width: 280px;
}
.about-card p { font-size: 0.88rem; line-height: 1.5; color: var(--dark); }
.about-card small { color: var(--gray); font-size: 0.78rem; }
.ac-icon { font-size: 1.5rem; flex-shrink: 0; }
.ac-1 { top: 0; left: 0; }
.ac-2 { top: 120px; right: 0; }
.ac-3 { top: 240px; left: 20px; }

/* ==========================================
   TESTIMONIALS
   ========================================== */
.testimonials { padding: 100px 0; background: var(--light); }
.testimonials-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.testimonial-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 28px;
}
.stars { color: #F5A623; font-size: 1rem; letter-spacing: 2px; margin-bottom: 16px; }
.testimonial-card p { font-size: 0.95rem; line-height: 1.75; color: var(--dark); margin-bottom: 28px; font-style: italic; }
.testimonial-author { display: flex; align-items: center; gap: 14px; }
.author-avatar {
  width: 44px; height: 44px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.78rem; font-weight: 700; color: var(--white);
  flex-shrink: 0;
}
.av1 { background: linear-gradient(135deg, #0ea5e9, #7c3aed); }
.av2 { background: linear-gradient(135deg, #06b6d4, #0891b2); }
.av3 { background: linear-gradient(135deg, #f97316, #dc2626); }
.testimonial-author strong { display: block; font-size: 0.9rem; color: var(--dark); }
.testimonial-author span { font-size: 0.78rem; color: var(--gray); }

/* ==========================================
   PROCESS
   ========================================== */
.process { padding: 100px 0; background: var(--navy); }
.process .section-header h2 { color: var(--white); }
.process .section-header p { color: rgba(255,255,255,.6); }
.process-steps { display: flex; align-items: flex-start; justify-content: center; gap: 0; flex-wrap: wrap; }
.process-step { text-align: center; max-width: 220px; padding: 0 12px; }
.step-num {
  font-size: 3rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 12px;
}
.process-step h3 { color: var(--white); margin-bottom: 10px; }
.process-step p { font-size: 0.88rem; color: rgba(255,255,255,.55); line-height: 1.65; }
.process-arrow { font-size: 1.5rem; color: rgba(255,255,255,.2); margin-top: 28px; align-self: flex-start; padding: 0 4px; }

/* ==========================================
   CONTACT
   ========================================== */
.contact { padding: 100px 0; background: var(--white); }
.contact-inner { display: grid; grid-template-columns: 1fr 1.4fr; gap: 72px; align-items: start; }
.contact-text .section-tag { display: inline-block; margin-bottom: 16px; }
.contact-text h2 { color: var(--dark); margin: 10px 0 20px; }
.contact-text p { font-size: 1rem; line-height: 1.75; margin-bottom: 32px; }
.contact-details { display: flex; flex-direction: column; gap: 14px; }
.contact-item { display: flex; align-items: center; gap: 12px; }
.contact-icon { font-size: 1.1rem; }
.contact-item a { font-weight: 600; color: var(--accent2); }
.contact-item a:hover { text-decoration: underline; }
.contact-item span { font-size: 0.95rem; color: var(--gray); }

.contact-form { display: flex; flex-direction: column; gap: 18px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-size: 0.85rem; font-weight: 600; color: var(--dark); }
.form-group input,
.form-group select,
.form-group textarea {
  padding: 12px 16px;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  font-family: inherit;
  font-size: 0.93rem;
  color: var(--dark);
  background: var(--white);
  transition: border-color .2s, box-shadow .2s;
  outline: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent2);
  box-shadow: 0 0 0 3px rgba(123,92,250,.12);
}
.form-group textarea { resize: vertical; }
.form-note { font-size: 0.78rem; text-align: center; color: var(--gray); }
.form-success {
  background: rgba(0,212,160,.1);
  border: 1px solid var(--green);
  color: #047d5e;
  border-radius: 8px;
  padding: 12px 16px;
  font-size: 0.9rem;
  font-weight: 500;
  text-align: center;
}
.hidden { display: none; }

/* ==========================================
   FOOTER
   ========================================== */
.footer { background: var(--navy); padding: 72px 0 0; }
.footer-inner { display: grid; grid-template-columns: 1.5fr 2fr; gap: 64px; padding-bottom: 60px; border-bottom: 1px solid rgba(255,255,255,.08); }
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand p { font-size: 0.88rem; color: rgba(255,255,255,.45); line-height: 1.7; }
.footer-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.footer-col h4 { color: rgba(255,255,255,.5); margin-bottom: 16px; }
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-col a { font-size: 0.88rem; color: rgba(255,255,255,.45); transition: color .2s; }
.footer-col a:hover { color: var(--accent); }
.footer-col li:not(:has(a)) { font-size: 0.88rem; color: rgba(255,255,255,.45); }
.footer-bottom { padding: 20px 0; }
.footer-bottom p { font-size: 0.8rem; color: rgba(255,255,255,.25); text-align: center; }

/* ==========================================
   PORTFOLIO CASE STUDY PAGES
   ========================================== */
.case-hero {
  padding: 140px 0 80px;
  background: linear-gradient(135deg, var(--navy), var(--mid));
  color: var(--white);
}
.back-link { display: inline-flex; align-items: center; gap: 6px; color: rgba(255,255,255,.6); font-size: 0.88rem; margin-bottom: 32px; transition: color .2s; }
.back-link:hover { color: var(--white); }
.case-tag { display: inline-block; background: rgba(255,255,255,.1); padding: 5px 14px; border-radius: 50px; font-size: 0.78rem; font-weight: 600; text-transform: uppercase; letter-spacing: .08em; margin-bottom: 20px; color: var(--accent); }
.case-hero h1 { max-width: 700px; margin-bottom: 20px; }
.case-hero p { font-size: 1.1rem; max-width: 580px; color: rgba(255,255,255,.7); }
.case-metrics { display: flex; gap: 40px; flex-wrap: wrap; margin-top: 48px; }
.case-metric .metric-val { font-size: 2.2rem; font-weight: 800; color: var(--accent); }
.case-metric .metric-label { font-size: 0.8rem; color: rgba(255,255,255,.5); text-transform: uppercase; letter-spacing: .06em; }

.case-body { padding: 80px 0; }
.case-grid { display: grid; grid-template-columns: 2fr 1fr; gap: 56px; }
.case-content h2 { font-size: 1.6rem; color: var(--dark); margin-bottom: 16px; }
.case-content p { font-size: 0.97rem; line-height: 1.8; margin-bottom: 20px; }
.case-sidebar { display: flex; flex-direction: column; gap: 24px; }
.sidebar-card {
  background: var(--light);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}
.sidebar-card h4 { margin-bottom: 14px; color: var(--dark); }
.sidebar-list { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.sidebar-list li { font-size: 0.88rem; color: var(--gray); padding-left: 14px; position: relative; }
.sidebar-list li::before { content: '→'; position: absolute; left: 0; color: var(--accent2); }

.case-screen {
  height: 280px;
  border-radius: var(--radius);
  overflow: hidden;
  margin: 40px 0;
  position: relative;
}
.case-screen::before {
  content: '● ● ●   enoriverai.com/work';
  position: absolute;
  top: 0; left: 0; right: 0;
  background: #1e2d40;
  color: rgba(255,255,255,.4);
  font-family: monospace;
  font-size: 0.72rem;
  padding: 9px 14px;
  letter-spacing: 2px;
}

/* ==========================================
   RESPONSIVE
   ========================================== */
@media (max-width: 960px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .about-inner { grid-template-columns: 1fr; gap: 48px; }
  .about-visual { display: none; }
  .contact-inner { grid-template-columns: 1fr; gap: 48px; }
  .footer-inner { grid-template-columns: 1fr; gap: 40px; }
  .case-grid { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .nav-links { display: none; }
  .hamburger { display: block; }
  .services-grid { grid-template-columns: 1fr; }
  .portfolio-grid { grid-template-columns: 1fr; }
  .testimonials-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-links { grid-template-columns: 1fr 1fr; }
  .process-steps { flex-direction: column; align-items: center; gap: 32px; }
  .process-arrow { transform: rotate(90deg); margin: 0; align-self: center; }
  .hero-stats { gap: 20px; }
  .stat-divider { display: none; }
  .case-metrics { gap: 24px; }
}

@media (max-width: 480px) {
  .footer-links { grid-template-columns: 1fr; }
  .hero h1 { font-size: 2rem; }
}