/* =============================================
   SAPPFUEL - PT. Satrio Anugrah Pratama Perkasa
   style.css — Main Stylesheet
   ============================================= */

@import url('https://fonts.googleapis.com/css2?family=Barlow+Condensed:ital,wght@0,400;0,600;0,700;0,800;1,400&family=Barlow:wght@300;400;500;600&family=Oswald:wght@400;500;600;700&display=swap');

/* ── CSS Variables ── */
:root {
  --blue-deep:    #0a1628;
  --blue-dark:    #0d2347;
  --blue-mid:     #1a3a6b;
  --blue-main:    #1e4db7;
  --blue-bright:  #2563eb;
  --blue-light:   #3b82f6;
  --blue-pale:    #dbeafe;
  --red-main:     #dc2626;
  --red-bright:   #ef4444;
  --red-dark:     #991b1b;
  --white:        #ffffff;
  --off-white:    #f8fafc;
  --gray-50:      #f1f5f9;
  --gray-100:     #e2e8f0;
  --gray-200:     #cbd5e1;
  --gray-400:     #94a3b8;
  --gray-600:     #475569;
  --gray-800:     #1e293b;

  --font-display: 'Oswald', sans-serif;
  --font-heading: 'Barlow Condensed', sans-serif;
  --font-body:    'Barlow', sans-serif;

  --nav-h: 72px;
  --radius: 4px;
  --radius-lg: 12px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.12);
  --shadow-md: 0 4px 16px rgba(0,0,0,.15);
  --shadow-lg: 0 8px 32px rgba(0,0,0,.2);
  --shadow-xl: 0 20px 60px rgba(0,0,0,.25);

  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-body);
  background: var(--white);
  color: var(--gray-800);
  line-height: 1.6;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* ── Typography ── */
h1, h2, h3, h4, h5 {
  font-family: var(--font-heading);
  line-height: 1.15;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.display-text {
  font-family: var(--font-display);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* ── Utility ── */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 96px 0; }
.section-sm { padding: 64px 0; }

.section-label {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--red-main);
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}
.section-label::before {
  content: '';
  display: block;
  width: 32px;
  height: 2px;
  background: var(--red-main);
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  color: var(--blue-dark);
  margin-bottom: 20px;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--gray-600);
  max-width: 600px;
  line-height: 1.75;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: var(--radius);
  transition: var(--transition);
}

.btn-primary {
  background: var(--red-main);
  color: var(--white);
  box-shadow: 0 4px 20px rgba(220,38,38,.35);
}
.btn-primary:hover {
  background: var(--red-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(220,38,38,.45);
}

.btn-outline {
  border: 2px solid rgba(255,255,255,.6);
  color: var(--white);
}
.btn-outline:hover {
  background: rgba(255,255,255,.1);
  border-color: var(--white);
  transform: translateY(-2px);
}

.btn-blue {
  background: var(--blue-main);
  color: var(--white);
  box-shadow: 0 4px 20px rgba(30,77,183,.35);
}
.btn-blue:hover {
  background: var(--blue-mid);
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(30,77,183,.45);
}

/* ── Navbar ── */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  transition: background var(--transition), box-shadow var(--transition);
}

.navbar.transparent {
  background: transparent;
}

.navbar.scrolled {
  background: var(--blue-deep);
  box-shadow: 0 2px 24px rgba(0,0,0,.3);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-brand img {
  height: 40px;
  width: auto;
  filter: brightness(0) invert(1);
}

.nav-brand-text {
  display: flex;
  flex-direction: column;
}

.nav-brand-name {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--white);
  letter-spacing: 0.08em;
  line-height: 1.1;
}

.nav-brand-sub {
  font-size: 0.65rem;
  color: rgba(255,255,255,.55);
  letter-spacing: 0.05em;
  font-weight: 400;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-links a {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,.8);
  padding: 8px 16px;
  border-radius: var(--radius);
  transition: var(--transition);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 4px; left: 16px; right: 16px;
  height: 2px;
  background: var(--red-main);
  transform: scaleX(0);
  transition: transform var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--white);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  transform: scaleX(1);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* Language Toggle */
.lang-toggle {
  display: flex;
  align-items: center;
  gap: 0;
  background: rgba(255,255,255,.1);
  border-radius: 20px;
  padding: 3px;
  border: 1px solid rgba(255,255,255,.15);
}

.lang-btn {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: rgba(255,255,255,.55);
  padding: 4px 12px;
  border-radius: 16px;
  transition: var(--transition);
  cursor: pointer;
}

.lang-btn.active {
  background: var(--red-main);
  color: var(--white);
}

/* Hamburger */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  cursor: pointer;
}

.nav-hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: var(--transition);
}

.nav-hamburger.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* Mobile Menu */
.nav-mobile {
  display: none;
  position: fixed;
  top: var(--nav-h);
  left: 0; right: 0;
  background: var(--blue-deep);
  padding: 20px 24px 28px;
  flex-direction: column;
  gap: 4px;
  border-top: 1px solid rgba(255,255,255,.08);
  z-index: 999;
  box-shadow: 0 8px 32px rgba(0,0,0,.3);
}

.nav-mobile.open { display: flex; }

.nav-mobile a {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255,255,255,.75);
  padding: 12px 16px;
  border-radius: var(--radius);
  transition: var(--transition);
  border-left: 3px solid transparent;
}

.nav-mobile a:hover,
.nav-mobile a.active {
  color: var(--white);
  background: rgba(255,255,255,.06);
  border-left-color: var(--red-main);
}

.nav-mobile .lang-toggle {
  align-self: flex-start;
  margin-top: 12px;
}

/* ── Page Header (inner pages) ── */
.page-header {
  background: linear-gradient(135deg, var(--blue-deep) 0%, var(--blue-mid) 100%);
  padding: 140px 0 72px;
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 80% at 80% 50%, rgba(30,77,183,.3) 0%, transparent 60%),
    repeating-linear-gradient(
      -45deg,
      transparent,
      transparent 40px,
      rgba(255,255,255,.015) 40px,
      rgba(255,255,255,.015) 80px
    );
}

.page-header::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--red-main), var(--red-bright), var(--red-main));
}

.page-header .container { position: relative; z-index: 1; }

.page-header-label {
  font-family: var(--font-display);
  font-size: 0.75rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--red-bright);
  margin-bottom: 12px;
}

.page-header h1 {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  color: var(--white);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* ── Footer ── */
.footer {
  background: var(--blue-deep);
  color: rgba(255,255,255,.7);
  position: relative;
  overflow: hidden;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--red-main), var(--blue-bright), var(--red-main));
}

.footer-top {
  padding: 72px 0 48px;
  display: grid;
  grid-template-columns: 1.8fr 1fr 1fr;
  gap: 48px;
}

.footer-brand img {
  height: 48px;
  width: auto;
  filter: brightness(0) invert(1);
  margin-bottom: 16px;
}

.footer-brand-name {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--white);
  letter-spacing: 0.08em;
  margin-bottom: 12px;
}

.footer-tagline {
  font-size: 0.9rem;
  color: rgba(255,255,255,.45);
  line-height: 1.7;
  margin-bottom: 24px;
}

.footer-socials {
  display: flex;
  gap: 10px;
}

.footer-social-btn {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.12);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,.6);
  transition: var(--transition);
  font-size: 0.85rem;
}

.footer-social-btn:hover {
  background: var(--red-main);
  border-color: var(--red-main);
  color: var(--white);
  transform: translateY(-2px);
}

.footer-col h4 {
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--white);
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(255,255,255,.08);
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul li a {
  font-size: 0.9rem;
  color: rgba(255,255,255,.5);
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-col ul li a::before {
  content: '›';
  color: var(--red-main);
  font-size: 1rem;
}

.footer-col ul li a:hover {
  color: var(--white);
  padding-left: 4px;
}

.footer-bottom {
  padding: 20px 0;
  border-top: 1px solid rgba(255,255,255,.07);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-copy {
  font-size: 0.8rem;
  color: rgba(255,255,255,.3);
}

.footer-badge {
  font-family: var(--font-heading);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,.2);
}

/* ── Divider ── */
.red-divider {
  width: 48px;
  height: 3px;
  background: var(--red-main);
  margin: 20px 0;
}

/* ── Cards ── */
.card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
}

/* ── Partner / Client Logo Grid ── */
.logo-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
}

.logo-item {
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius);
  padding: 20px 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  flex: 0 0 auto;
  min-height: 96px;
}

.logo-item img {
  height: 52px;
  width: auto;
  max-width: 160px;
  object-fit: contain;
  filter: grayscale(100%);
  opacity: 0.6;
  transition: var(--transition);
}

.logo-item:hover {
  border-color: var(--blue-light);
  box-shadow: var(--shadow-sm);
}

.logo-item:hover img {
  filter: grayscale(0%);
  opacity: 1;
}

/* ── WhatsApp Button (shared across all pages) ── */
.wa-btn {
  position: fixed;
  bottom: 32px;
  left: 32px;
  z-index: 900;
  display: flex;
  align-items: center;
  gap: 10px;
  background: #25d366;
  color: var(--white);
  padding: 13px 20px 13px 16px;
  border-radius: 50px;
  box-shadow: 0 4px 20px rgba(37,211,102,.45);
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: var(--transition);
}

.wa-btn:hover {
  background: #1ebe5d;
  transform: translateY(-3px);
  box-shadow: 0 8px 28px rgba(37,211,102,.55);
}

.wa-label { white-space: nowrap; }

@media (max-width: 768px) {
  .wa-btn { bottom: 20px; left: 20px; padding: 12px 14px; }
  .wa-label { display: none; }
}

/* ── Accordion ── */
.accordion-item {
  border: 1px solid var(--gray-100);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 8px;
}

.accordion-header {
  width: 100%;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--white);
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--blue-dark);
  text-align: left;
  transition: var(--transition);
  cursor: pointer;
}

.accordion-header:hover {
  background: var(--gray-50);
}

.accordion-header.open {
  background: var(--blue-dark);
  color: var(--white);
}

.accordion-icon {
  width: 24px; height: 24px;
  border-radius: 50%;
  background: var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  line-height: 1;
  flex-shrink: 0;
  transition: var(--transition);
}

.accordion-header.open .accordion-icon {
  background: var(--red-main);
  color: var(--white);
  transform: rotate(45deg);
}

.accordion-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4,0,0.2,1);
}

.accordion-body.open {
  max-height: 400px;
}

.accordion-content {
  padding: 20px 24px;
  color: var(--gray-600);
  line-height: 1.75;
  border-top: 1px solid var(--gray-100);
}

/* ── Scroll to Top ── */
.scroll-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px; height: 44px;
  background: var(--red-main);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  box-shadow: 0 4px 16px rgba(220,38,38,.4);
  cursor: pointer;
  opacity: 0;
  transform: translateY(16px);
  transition: var(--transition);
  z-index: 900;
  border: none;
}

.scroll-top.visible {
  opacity: 1;
  transform: translateY(0);
}

.scroll-top:hover {
  background: var(--red-dark);
  transform: translateY(-3px);
}

/* ── AOS overrides ── */
[data-aos] { pointer-events: none; }
[data-aos].aos-animate { pointer-events: auto; }

/* ── Responsive ── */
@media (max-width: 1024px) {
  .footer-top { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 768px) {
  :root { --nav-h: 64px; }

  .nav-links, .nav-right { display: none; }
  .nav-hamburger { display: flex; }

  .section { padding: 64px 0; }
  .section-sm { padding: 48px 0; }

  .footer-top { grid-template-columns: 1fr; gap: 32px; }

  .footer-bottom {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }

  .scroll-top { bottom: 20px; right: 20px; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
}