/* ============================================
   Apex Digital Studio — Corporate / Polished
   ============================================ */

/* --- Design Tokens --- */
:root {
  --navy: #0f1b2d;
  --navy-light: #1a2d47;
  --navy-mid: #243b5c;
  --white: #ffffff;
  --off-white: #f4f6f9;
  --gray-100: #e8ecf1;
  --gray-200: #c9d1dc;
  --gray-400: #7c8a9e;
  --gray-600: #4a5568;
  --teal: #0ea5a0;
  --teal-light: #14c9c3;
  --teal-dark: #0b8580;
  --font-head: 'Plus Jakarta Sans', system-ui, sans-serif;
  --font-body: 'DM Sans', system-ui, sans-serif;
  --radius: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --shadow-sm: 0 1px 3px rgba(15, 27, 45, 0.08);
  --shadow: 0 4px 20px rgba(15, 27, 45, 0.1);
  --shadow-lg: 0 12px 40px rgba(15, 27, 45, 0.15);
  --transition: 0.3s ease;
}

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  background: var(--white);
  color: var(--navy);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-head);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
}
h1 { font-size: clamp(2.4rem, 5vw, 4rem); }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.8rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.5rem); }
h4 { font-size: 1rem; }
p { max-width: 65ch; color: var(--gray-600); }

/* --- Layout --- */
.container {
  width: min(90%, 1200px);
  margin: 0 auto;
}
.section { padding: 5rem 0; }
.section-head { margin-bottom: 3rem; }
.section-tag {
  display: inline-block;
  font-family: var(--font-head);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 0.75rem;
}
.section-title { margin-bottom: 1rem; }
.section-desc { font-size: 1.1rem; }

/* --- Grids --- */
.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 2rem; }
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 2rem; }
.grid-4 { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1.5rem; }

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius);
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}
.btn-primary {
  background: var(--teal);
  color: var(--white);
}
.btn-primary:hover { background: var(--teal-dark); }
.btn-outline {
  background: transparent;
  color: var(--navy);
  border: 2px solid var(--navy);
}
.btn-outline:hover { background: var(--navy); color: var(--white); }
.btn-text {
  background: none;
  color: var(--teal);
  padding: 0;
  font-weight: 600;
}
.btn-text:hover { color: var(--teal-dark); }
.btn-nav {
  background: var(--teal);
  color: var(--white);
  padding: 0.5rem 1.25rem;
  font-size: 0.85rem;
}
.btn-nav:hover { background: var(--teal-dark); }
.btn-lg { padding: 1rem 2.5rem; font-size: 1.05rem; }

/* ============================================
   NAVIGATION
   ============================================ */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--gray-100);
  padding: 1rem 0;
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.6rem;
  color: var(--navy);
  letter-spacing: -0.03em;
}
.logo-dot { color: var(--teal); }
.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}
.nav-links a:not(.btn) {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--gray-600);
  transition: color var(--transition);
}
.nav-links a:not(.btn):hover,
.nav-links a:not(.btn).active {
  color: var(--navy);
}
.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(--navy);
  border-radius: 2px;
  transition: all var(--transition);
}

/* ============================================
   HERO
   ============================================ */
.hero {
  padding: 6rem 0 5rem;
  background: var(--off-white);
}
.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}
.hero-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gray-400);
  margin-bottom: 1rem;
}
.hero h1 { margin-bottom: 1.25rem; }
.text-accent { color: var(--teal); }
.hero-sub {
  font-size: 1.1rem;
  margin-bottom: 2rem;
  max-width: 50ch;
}
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }

/* Hero stat cards */
.hero-visual {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
.hero-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow);
}
.hero-card-1 { grid-column: 1 / -1; }
.hero-card-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--gray-400);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.25rem;
}
.hero-card-value {
  display: block;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 2rem;
  color: var(--navy);
}
.hero-card-1 .hero-card-value { font-size: 2.8rem; color: var(--teal); }

/* ============================================
   CARDS
   ============================================ */
.card {
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: all var(--transition);
}
.card:hover {
  border-color: var(--teal);
  box-shadow: var(--shadow);
}
.card-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--off-white);
  border-radius: var(--radius);
  color: var(--teal);
  margin-bottom: 1.25rem;
}
.card-title {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}
.card-text { font-size: 0.95rem; }

/* ============================================
   CLIENT LOGOS
   ============================================ */
.logos-section {
  padding: 3rem 0;
  border-top: 1px solid var(--gray-100);
  border-bottom: 1px solid var(--gray-100);
}
.logos-label {
  text-align: center;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--gray-400);
  margin-bottom: 1.5rem;
}
.logos-row {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 3rem;
}
.logo-item {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1rem;
  color: var(--gray-200);
  white-space: nowrap;
}

/* ============================================
   CASE STUDY (TEASER)
   ============================================ */
.case-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  background: var(--off-white);
  border-radius: var(--radius-xl);
  overflow: hidden;
}
.case-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--navy);
  padding: 3rem;
}
.case-placeholder { text-align: center; }
.case-stat {
  display: block;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 3.5rem;
  color: var(--teal);
  line-height: 1;
}
.case-stat-label {
  display: block;
  font-size: 0.9rem;
  color: var(--gray-200);
  margin-top: 0.5rem;
}
.case-info { padding: 3rem; }
.case-client {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--teal);
  margin-bottom: 0.75rem;
}
.case-title { font-size: 1.4rem; margin-bottom: 1rem; }
.case-text { font-size: 0.95rem; margin-bottom: 1.5rem; }
.case-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}
.case-tags li,
.case-tags span {
  display: inline-block;
  padding: 0.3rem 0.75rem;
  background: var(--white);
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--gray-600);
}

/* ============================================
   TESTIMONIALS
   ============================================ */
.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}
.testimonial {
  background: var(--off-white);
  border-radius: var(--radius-lg);
  padding: 2rem;
  border-left: 4px solid var(--teal);
}
.testimonial-text {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--navy);
  margin-bottom: 1.5rem;
  font-style: italic;
}
.testimonial-author {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.testimonial-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--navy);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.85rem;
  flex-shrink: 0;
}
.testimonial-name {
  display: block;
  font-style: normal;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--navy);
}
.testimonial-role {
  display: block;
  font-size: 0.8rem;
  color: var(--gray-400);
}

/* ============================================
   CTA SECTION
   ============================================ */
.cta-section {
  background: var(--navy);
  text-align: center;
}
.cta-inner { max-width: 600px; margin: 0 auto; }
.cta-title { color: var(--white); margin-bottom: 1rem; }
.cta-text { color: var(--gray-200); margin-bottom: 2rem; }
.cta-section .btn-primary { background: var(--teal); }
.cta-section .btn-primary:hover { background: var(--teal-light); }

/* ============================================
   PAGE HERO (inner pages)
   ============================================ */
.page-hero {
  padding: 5rem 0 3rem;
  background: var(--off-white);
}
.page-hero h1 { margin-bottom: 1rem; }

/* ============================================
   SERVICES DETAIL
   ============================================ */
.service-detail {
  border: 1px solid var(--gray-100);
  border-radius: var(--radius-xl);
  margin-bottom: 2rem;
  overflow: hidden;
}
.service-detail-header {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 1.5rem 2rem;
  background: var(--off-white);
  border-bottom: 1px solid var(--gray-100);
}
.service-number {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.4rem;
  color: var(--teal);
}
.service-detail-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
}
.service-detail-left {
  padding: 2rem;
  border-right: 1px solid var(--gray-100);
}
.service-approach {
  font-size: 1rem;
  margin-bottom: 1.5rem;
}
.service-checklist li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
  color: var(--gray-600);
}
.service-checklist li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--teal);
}
.service-detail-right {
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.service-tier {
  padding: 1.25rem;
  border-radius: var(--radius);
  background: var(--off-white);
  border: 1px solid var(--gray-100);
}
.service-tier.featured {
  border-color: var(--teal);
  background: rgba(14, 165, 160, 0.05);
}
.service-tier h4 {
  font-size: 0.9rem;
  margin-bottom: 0.25rem;
}
.tier-price {
  display: block;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--teal);
  margin-bottom: 0.5rem;
}
.service-tier p { font-size: 0.85rem; }

/* ============================================
   CASE STUDIES (FULL)
   ============================================ */
.case-studies-section { background: var(--off-white); }
.case-study-full {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  margin-bottom: 2rem;
  border: 1px solid var(--gray-100);
}
.case-study-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.75rem;
}
.case-year {
  font-size: 0.8rem;
  color: var(--gray-400);
}
.case-study-title {
  font-size: 1.3rem;
  margin-bottom: 1.5rem;
}
.case-study-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-bottom: 1.5rem;
}
.case-col h4 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--teal);
  margin-bottom: 0.5rem;
}
.case-col p { font-size: 0.9rem; }

/* ============================================
   VALUES
   ============================================ */
.values-section { background: var(--off-white); }
.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}
.value-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 2rem;
  border: 1px solid var(--gray-100);
}
.value-number {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.8rem;
  color: var(--gray-100);
  display: block;
  margin-bottom: 0.75rem;
}
.value-card h3 { margin-bottom: 0.5rem; }

/* ============================================
   TEAM
   ============================================ */
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}
.team-card {
  background: var(--off-white);
  border-radius: var(--radius-lg);
  padding: 2rem;
  text-align: center;
}
.team-avatar {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: var(--navy);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.1rem;
  margin: 0 auto 1.25rem;
}
.team-name { font-size: 1.1rem; margin-bottom: 0.25rem; }
.team-role {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--teal);
  margin-bottom: 0.75rem;
}
.team-bio { font-size: 0.9rem; }

/* ============================================
   STORY (ABOUT)
   ============================================ */
.story-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 3rem;
  align-items: start;
}
.story-content p {
  margin-bottom: 1rem;
  font-size: 1.05rem;
}
.story-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}
.story-stat {
  background: var(--off-white);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  text-align: center;
}
.story-stat-number {
  display: block;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 2rem;
  color: var(--teal);
  line-height: 1;
  margin-bottom: 0.25rem;
}
.story-stat-label {
  font-size: 0.8rem;
  color: var(--gray-400);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ============================================
   CONTACT
   ============================================ */
.contact-section { background: var(--off-white); }
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 3rem;
}
.contact-item { margin-bottom: 1.5rem; }
.contact-item h3 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--gray-400);
  margin-bottom: 0.25rem;
}
.contact-item a {
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--teal);
}
.contact-item a:hover { color: var(--teal-dark); }
.contact-item p { font-size: 0.95rem; }
.contact-form { display: flex; flex-direction: column; gap: 1rem; }
.form-group { display: flex; flex-direction: column; gap: 0.35rem; }
.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--navy);
}
.form-group input,
.form-group textarea {
  padding: 0.75rem 1rem;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--navy);
  background: var(--white);
  transition: border-color var(--transition);
}
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--teal);
}
.form-group textarea { resize: vertical; }

/* ============================================
   FOOTER
   ============================================ */
.site-footer {
  background: var(--navy);
  padding: 4rem 0 0;
  color: var(--gray-200);
}
.footer-inner {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 3rem;
}
.footer-logo { color: var(--white); font-size: 1.4rem; }
.footer-tagline {
  font-size: 0.9rem;
  color: var(--gray-400);
  margin-top: 0.75rem;
  max-width: 280px;
}
.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}
.footer-col h4 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--gray-200);
  margin-bottom: 0.75rem;
}
.footer-col a {
  display: block;
  font-size: 0.9rem;
  color: var(--gray-400);
  margin-bottom: 0.5rem;
  transition: color var(--transition);
}
.footer-col a:hover { color: var(--teal); }
.footer-address {
  font-size: 0.85rem;
  color: var(--gray-400);
  line-height: 1.5;
}
.footer-bottom {
  margin-top: 3rem;
  padding: 1.5rem 0;
  border-top: 1px solid var(--navy-light);
}
.footer-bottom p {
  font-size: 0.8rem;
  color: var(--gray-400);
  text-align: center;
}

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

/* ============================================
   RESPONSIVE — TABLET (~768px)
   ============================================ */
@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--white);
    flex-direction: column;
    align-items: flex-start;
    padding: 5rem 2rem;
    gap: 1.5rem;
    box-shadow: var(--shadow-lg);
    transition: right var(--transition);
  }
  .nav-links.open { right: 0; }
  .nav-links a:not(.btn) { font-size: 1.1rem; }

  .hero .container {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero-sub { margin-left: auto; margin-right: auto; }
  .hero-actions { justify-content: center; }
  .hero-visual { max-width: 400px; margin: 0 auto; }

  .case-card { grid-template-columns: 1fr; }
  .case-info { padding: 2rem; }

  .service-detail-body { grid-template-columns: 1fr; }
  .service-detail-left { border-right: none; border-bottom: 1px solid var(--gray-100); }

  .case-study-grid { grid-template-columns: 1fr; gap: 1.5rem; }

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

  .footer-inner { grid-template-columns: 1fr; }
  .footer-links { grid-template-columns: repeat(3, 1fr); }
}

/* ============================================
   RESPONSIVE — MOBILE (~375px)
   ============================================ */
@media (max-width: 480px) {
  .section { padding: 3rem 0; }
  .hero { padding: 4rem 0 3rem; }

  .grid-4 { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: 1fr; }

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

  .logos-row { gap: 1.5rem; }
  .logo-item { font-size: 0.85rem; }

  .service-detail-header { flex-direction: column; align-items: flex-start; gap: 0.5rem; }

  .values-grid { grid-template-columns: 1fr; }
  .team-grid { grid-template-columns: 1fr; }
  .story-stats { grid-template-columns: 1fr 1fr; }

  .footer-links { grid-template-columns: 1fr; gap: 1.5rem; }

  .btn-lg { padding: 0.875rem 2rem; }
}