:root {
  --color-primary: #e63946;
  --color-primary-dark: #b4232f;
  --color-accent: #ffb703;
  --color-secondary: #4cc9f0;
  --color-bg: #0a0f1c;
  --color-bg-alt: #111a2e;
  --color-card: #15203a;
  --color-text: #e8eaf0;
  --color-text-muted: #9aa6bf;
  --color-border: #263253;
  --font-base: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  --radius: 10px;
  --max-width: 1120px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-base);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
}

img { max-width: 100%; height: auto; display: block; }

.section__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 4rem 1.5rem;
}

section { scroll-margin-top: 80px; }

/* Header / Nav */
.site-header {
  position: sticky;
  top: 0;
  background: rgba(10, 15, 28, 0.95);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--color-border);
  z-index: 10;
}

.nav {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0.85rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--color-text);
  text-decoration: none;
  letter-spacing: 0.3px;
}

.nav__logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: #0a0f1c;
  font-weight: 900;
  font-size: 1rem;
}

.nav__logo-img { width: 34px; height: 34px; border-radius: 8px; display: block; }

.nav__logo span.brand-que { color: var(--color-accent); }

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

.nav__links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav__links a {
  color: var(--color-text);
  text-decoration: none;
  font-size: 0.95rem;
}

.nav__links a:hover { color: var(--color-accent); }

.nav__cta {
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius);
  padding: 0.45rem 1rem;
  font-weight: 700;
}

.nav__cta:hover { background: var(--color-primary-dark); color: #fff; }

/* Hero */
.hero {
  position: relative;
  background:
    radial-gradient(900px 400px at 80% -10%, rgba(230, 57, 70, 0.18), transparent 60%),
    radial-gradient(700px 400px at 10% 120%, rgba(76, 201, 240, 0.12), transparent 60%),
    linear-gradient(135deg, var(--color-bg-alt) 0%, var(--color-bg) 100%);
  color: var(--color-text);
  text-align: center;
  overflow: hidden;
}

.hero__content {
  max-width: 820px;
  margin: 0 auto;
  padding: 5.5rem 1.5rem 4.5rem;
}

.hero__logo {
  width: 110px;
  height: 110px;
  border-radius: 22px;
  margin: 0 auto 1.5rem;
  display: block;
  box-shadow: 0 10px 30px rgba(230, 57, 70, 0.35);
}

.hero__badge {
  display: inline-block;
  background: rgba(255, 183, 3, 0.12);
  border: 1px solid rgba(255, 183, 3, 0.45);
  color: var(--color-accent);
  font-weight: 700;
  font-size: 0.82rem;
  letter-spacing: 0.4px;
  text-transform: uppercase;
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  margin-bottom: 1.5rem;
}

.hero__content h1 {
  font-size: clamp(1.9rem, 5vw, 3rem);
  line-height: 1.15;
  margin-bottom: 1.25rem;
  color: #fff;
}

.hero__content h1 .accent { color: var(--color-primary); }

.hero__tagline {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: 1rem;
}

.hero__content p {
  font-size: 1.08rem;
  margin-bottom: 2rem;
  color: var(--color-text-muted);
}

.hero__actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 0.8rem 1.9rem;
  border-radius: var(--radius);
  text-decoration: none;
  font-weight: 700;
  transition: transform 0.15s ease, background 0.15s ease;
}

.btn:hover { transform: translateY(-2px); }

.btn--primary { background: var(--color-primary); color: #fff; }
.btn--primary:hover { background: var(--color-primary-dark); }

.btn--ghost {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}
.btn--ghost:hover { border-color: var(--color-accent); color: var(--color-accent); }

/* Problem / Solution */
.problem h2 { font-size: 1.6rem; margin-bottom: 0.75rem; }
.problem__col--problem h2 { color: var(--color-primary); }
.problem__col--solution h2 { color: var(--color-accent); }

.problem__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2.5rem;
}

.problem__col {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.75rem;
}

.problem__col--problem { border-left: 4px solid var(--color-primary); }
.problem__col--solution { border-left: 4px solid var(--color-accent); }

.problem__col p { color: var(--color-text-muted); }

/* Generic section headings */
.tech h2, .features h2, .screenshots h2, .impact h2, .flow h2, .cta h2 {
  color: var(--color-accent);
}

.tech { background: var(--color-bg-alt); }
.tech h2 { font-size: 1.85rem; margin-bottom: 0.75rem; }

.section__intro { color: var(--color-text-muted); margin-bottom: 2.5rem; max-width: 680px; }

.tech__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.tech__card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.tech__card:hover { border-color: var(--color-accent); transform: translateY(-3px); }

.tech__card h3 { font-size: 1.05rem; margin-bottom: 0.5rem; color: var(--color-secondary); }
.tech__card p { color: var(--color-text-muted); font-size: 0.95rem; }

/* Components (4 komponen) */
.components { }
.components h2 { font-size: 1.85rem; margin-bottom: 0.75rem; color: var(--color-accent); }

.components__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
  counter-reset: komp;
}

.component__card {
  position: relative;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.75rem 1.5rem 1.5rem;
}

.component__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  font-weight: 800;
  margin-bottom: 0.9rem;
}

.component__card h3 { font-size: 1.05rem; margin-bottom: 0.4rem; color: var(--color-text); }
.component__card p { color: var(--color-text-muted); font-size: 0.92rem; }

/* Features */
.features h2 {
  font-size: 1.85rem;
  margin-bottom: 2.5rem;
  text-align: center;
}

.features__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
}

.feature__card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
}

.feature__card .feature__icon { font-size: 1.5rem; margin-bottom: 0.5rem; display: block; }
.feature__card h3 { font-size: 1rem; margin-bottom: 0.5rem; color: var(--color-accent); }
.feature__card p { color: var(--color-text-muted); font-size: 0.9rem; }

.features__integration {
  text-align: center;
  margin-top: 2.5rem;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* Screenshots / gallery */
.screenshots { background: var(--color-bg-alt); }

.screenshots h2 {
  font-size: 1.85rem;
  margin-bottom: 2.5rem;
  text-align: center;
}

.screenshots__wide {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  max-width: 900px;
  margin: 0 auto;
}

.screenshots__wide figure {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
}

.screenshots__wide figcaption {
  padding: 1rem 1.5rem;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  text-align: center;
}

/* Flow / cara berfungsi */
.flow h2 { font-size: 1.85rem; margin-bottom: 2.5rem; text-align: center; }

.flow__steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.25rem;
}

.flow__step {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  text-align: center;
}

.flow__step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: #0a0f1c;
  font-weight: 900;
  margin-bottom: 0.75rem;
}

.flow__step h3 { font-size: 1rem; margin-bottom: 0.4rem; color: var(--color-secondary); }
.flow__step p { color: var(--color-text-muted); font-size: 0.9rem; }

/* Impact */
.impact h2 {
  font-size: 1.85rem;
  margin-bottom: 2.5rem;
  text-align: center;
}

.impact__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  text-align: center;
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem 1rem;
}

.stat__value {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--color-accent);
}

.stat__label {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

/* Recognition */
.recognition {
  background: var(--color-bg-alt);
  text-align: center;
  border-top: 2px solid var(--color-primary);
  border-bottom: 2px solid var(--color-primary);
}

.recognition h2 { font-size: 1.5rem; margin-bottom: 0.75rem; color: var(--color-accent); }
.recognition p { max-width: 680px; margin: 0 auto; color: var(--color-text-muted); }
.recognition .recognition__note { margin-top: 1rem; font-size: 0.85rem; color: var(--color-text-muted); font-style: italic; }

/* CTA */
.cta { text-align: center; }
.cta h2 { font-size: 1.85rem; margin-bottom: 0.75rem; }
.cta p { color: var(--color-text-muted); margin-bottom: 1.75rem; }

/* Footer */
.site-footer {
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  text-align: center;
  padding: 2rem 1.5rem;
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

.footer__brand {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.footer__brand-line {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.footer__brand strong { color: var(--color-text); }

/* Responsive nav */
@media (max-width: 760px) {
  .nav__toggle { display: block; }
  .nav__links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    align-items: flex-start;
    padding: 1rem 1.5rem;
    gap: 1rem;
    display: none;
  }
  .nav__links--open { display: flex; }
  .nav__cta { align-self: flex-start; }
}

/* Poster projek */
.poster { background: var(--color-bg); }
.poster h2 { font-size: 1.85rem; margin-bottom: 1.5rem; color: var(--color-accent); text-align: center; }
.poster__frame {
  display: block;
  max-width: 720px;
  margin: 0 auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.45);
  transition: transform 0.15s ease;
}
.poster__frame:hover { transform: translateY(-3px); }
.poster__frame img { width: 100%; height: auto; display: block; }
.poster__hint { text-align: center; margin-top: 0.9rem; color: var(--color-text-muted); font-size: 0.85rem; }