/* ============================
   DENIZVAN — style.css
   ============================ */

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

:root {
  --navy:     #050E1F;
  --deep:     #0A1A33;
  --mid:      #0D2A4A;
  --ocean:    #0E4D7B;
  --sky:      #1A8FD1;
  --aqua:     #00C8E0;
  --foam:     #E8F8FB;
  --white:    #FFFFFF;
  --off:      #C8DDE8;
  --muted:    #6FA3BF;
  --accent:   #00E5C0;

  --font-display: 'Bebas Neue', sans-serif;
  --font-body:    'DM Sans', sans-serif;

  --radius:   12px;
  --radius-sm: 6px;
  --trans:    0.3s ease;
  --nav-h:    72px;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--navy);
  color: var(--off);
  line-height: 1.7;
  overflow-x: hidden;
}

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

/* ── CONTAINER ── */
.container { max-width: 1160px; margin: 0 auto; padding: 0 24px; }

/* ── BUTTONS ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 100px;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: var(--trans);
  white-space: nowrap;
}
.btn--primary {
  background: var(--accent);
  color: var(--navy);
}
.btn--primary:hover { background: #00ffd5; transform: translateY(-2px); }

.btn--outline {
  background: transparent;
  color: var(--white);
  border: 1.5px solid rgba(255,255,255,0.3);
}
.btn--outline:hover { border-color: var(--accent); color: var(--accent); }

.btn--ghost {
  background: rgba(255,255,255,0.08);
  color: var(--white);
  border: 1.5px solid rgba(255,255,255,0.15);
}
.btn--ghost:hover { background: rgba(255,255,255,0.15); }

/* ── NAV ── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 40px;
  background: rgba(5,14,31,0.7);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  transition: background var(--trans);
}
.nav__logo {
  font-family: var(--font-display);
  font-size: 28px;
  letter-spacing: 3px;
  color: var(--white);
}
.nav__logo span { color: var(--accent); }

.nav__links {
  display: flex;
  gap: 36px;
}
.nav__links a {
  font-size: 14px;
  font-weight: 400;
  color: var(--off);
  letter-spacing: 0.5px;
  transition: color var(--trans);
}
.nav__links a:hover { color: var(--accent); }

.nav__burger {
  display: none;
  background: none;
  border: none;
  color: var(--white);
  font-size: 22px;
  cursor: pointer;
}

/* ── HERO ── */
.hero {
  min-height: 100vh;
  background: linear-gradient(160deg, var(--deep) 0%, var(--mid) 50%, var(--ocean) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: var(--nav-h) 24px 0;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 50% 120%, rgba(0,200,224,0.15) 0%, transparent 60%),
    radial-gradient(ellipse 40% 40% at 80% 20%, rgba(0,229,192,0.08) 0%, transparent 50%);
  pointer-events: none;
}

.hero__waves {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  pointer-events: none;
}
.hero__waves svg { width: 100%; height: auto; display: block; }

.hero__content {
  text-align: center;
  position: relative;
  z-index: 1;
  max-width: 800px;
  animation: fadeUp 1s ease both;
}

.hero__tag {
  display: inline-block;
  background: rgba(0,229,192,0.12);
  color: var(--accent);
  border: 1px solid rgba(0,229,192,0.3);
  padding: 6px 18px;
  border-radius: 100px;
  font-size: 13px;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 28px;
}

.hero__title {
  font-family: var(--font-display);
  font-size: clamp(80px, 14vw, 160px);
  line-height: 0.9;
  color: var(--white);
  letter-spacing: 4px;
  margin-bottom: 28px;
}
.hero__title .accent { color: var(--aqua); }

.hero__sub {
  font-size: clamp(16px, 2vw, 20px);
  font-weight: 300;
  color: var(--off);
  margin-bottom: 44px;
  line-height: 1.7;
}

.hero__actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

.hero__scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
}
.scroll__line {
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, var(--muted), transparent);
  animation: pulse 2s ease-in-out infinite;
}

/* ── SECTION HEADERS ── */
.section__tag {
  display: inline-block;
  color: var(--accent);
  font-size: 12px;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.section__header { text-align: center; margin-bottom: 60px; }
.section__header h2 {
  font-family: var(--font-display);
  font-size: clamp(36px, 5vw, 56px);
  color: var(--white);
  letter-spacing: 2px;
}

/* ── FEATURES ── */
.features {
  padding: 100px 0;
  background: var(--navy);
}

.features__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.feature__card {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: var(--radius);
  padding: 36px 28px;
  transition: var(--trans);
}
.feature__card:hover {
  background: rgba(0,200,224,0.06);
  border-color: rgba(0,200,224,0.2);
  transform: translateY(-4px);
}
.feature__icon { font-size: 32px; margin-bottom: 20px; }
.feature__card h3 {
  font-size: 18px;
  font-weight: 500;
  color: var(--white);
  margin-bottom: 10px;
}
.feature__card p { font-size: 14px; color: var(--muted); line-height: 1.7; }

/* ── VISION ── */
.vision {
  padding: 100px 0;
  background: linear-gradient(135deg, var(--deep) 0%, var(--mid) 100%);
  border-top: 1px solid rgba(255,255,255,0.05);
  border-bottom: 1px solid rgba(255,255,255,0.05);
}

.vision__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.vision__text h2 {
  font-family: var(--font-display);
  font-size: clamp(36px, 4vw, 52px);
  color: var(--white);
  letter-spacing: 2px;
  margin-bottom: 20px;
}
.vision__text p {
  font-size: 15px;
  color: var(--muted);
  margin-bottom: 16px;
  line-height: 1.8;
}
.vision__text .btn { margin-top: 8px; }

.vision__stats {
  display: flex;
  flex-direction: column;
  gap: 40px;
}
.stat__num {
  font-family: var(--font-display);
  font-size: 56px;
  color: var(--accent);
  letter-spacing: 2px;
  line-height: 1;
}
.stat__num span {
  font-size: 24px;
  margin-left: 4px;
  color: var(--aqua);
}
.stat__label { font-size: 14px; color: var(--muted); margin-top: 4px; }

/* ── CTA ── */
.cta {
  padding: 100px 0;
  background: var(--navy);
  text-align: center;
}
.cta h2 {
  font-family: var(--font-display);
  font-size: clamp(32px, 4vw, 48px);
  color: var(--white);
  letter-spacing: 2px;
  margin-bottom: 16px;
}
.cta p { color: var(--muted); font-size: 16px; margin-bottom: 36px; }

.cta__form {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}
.cta__form input[type="email"] {
  padding: 13px 24px;
  border-radius: 100px;
  border: 1px solid rgba(255,255,255,0.15);
  background: rgba(255,255,255,0.06);
  color: var(--white);
  font-family: var(--font-body);
  font-size: 15px;
  width: 300px;
  outline: none;
  transition: border-color var(--trans);
}
.cta__form input[type="email"]::placeholder { color: var(--muted); }
.cta__form input[type="email"]:focus { border-color: var(--accent); }

/* ── FOOTER ── */
.footer {
  background: var(--deep);
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 60px 0 0;
}
.footer__inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
}
.footer__brand p { color: var(--muted); font-size: 14px; margin-top: 12px; line-height: 1.6; }

.footer__links h4 {
  font-size: 13px;
  font-weight: 500;
  color: var(--white);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.footer__links li { margin-bottom: 10px; }
.footer__links a { font-size: 14px; color: var(--muted); transition: color var(--trans); }
.footer__links a:hover { color: var(--accent); }

.footer__bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 20px 0;
  text-align: center;
}
.footer__bottom p { font-size: 13px; color: var(--muted); }

/* ── PAGE BANNER (inner pages) ── */
.page__banner {
  background: linear-gradient(160deg, var(--deep) 0%, var(--mid) 60%, var(--ocean) 100%);
  padding: calc(var(--nav-h) + 60px) 24px 80px;
  text-align: center;
}
.page__banner h1 {
  font-family: var(--font-display);
  font-size: clamp(48px, 7vw, 80px);
  color: var(--white);
  letter-spacing: 3px;
}
.page__banner p { color: var(--off); font-size: 18px; margin-top: 16px; }

/* ── CONTACT PAGE ── */
.contact__section { padding: 80px 0; }
.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 60px;
  align-items: start;
}
.contact__info h3 {
  font-family: var(--font-display);
  font-size: 28px;
  color: var(--white);
  letter-spacing: 1px;
  margin-bottom: 16px;
}
.contact__info p { color: var(--muted); font-size: 15px; margin-bottom: 32px; }
.contact__detail {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  color: var(--off);
  font-size: 15px;
}
.contact__detail strong { color: var(--accent); min-width: 80px; }

.form__group { margin-bottom: 20px; }
.form__group label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--off);
  margin-bottom: 8px;
  letter-spacing: 0.5px;
}
.form__group input,
.form__group textarea,
.form__group select {
  width: 100%;
  padding: 13px 18px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-sm);
  color: var(--white);
  font-family: var(--font-body);
  font-size: 15px;
  outline: none;
  transition: border-color var(--trans);
}
.form__group textarea { resize: vertical; min-height: 120px; }
.form__group select option { background: var(--deep); }
.form__group input:focus,
.form__group textarea:focus,
.form__group select:focus { border-color: var(--accent); }

/* ── KONSEPT PAGE ── */
.konsept__section { padding: 80px 0; }
.konsept__block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  margin-bottom: 80px;
}
.konsept__block.reverse { direction: rtl; }
.konsept__block.reverse > * { direction: ltr; }
.konsept__visual {
  background: rgba(0,200,224,0.05);
  border: 1px solid rgba(0,200,224,0.15);
  border-radius: var(--radius);
  height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 80px;
}
.konsept__text h3 {
  font-family: var(--font-display);
  font-size: 36px;
  color: var(--white);
  letter-spacing: 1px;
  margin-bottom: 16px;
}
.konsept__text p { color: var(--muted); font-size: 15px; line-height: 1.8; margin-bottom: 12px; }

/* ── GALERI PAGE ── */
.galeri__section { padding: 80px 0; }
.galeri__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}
.galeri__card {
  background: rgba(0,200,224,0.04);
  border: 1px solid rgba(0,200,224,0.1);
  border-radius: var(--radius);
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 12px;
  color: var(--muted);
  font-size: 14px;
  transition: var(--trans);
  overflow: hidden;
  position: relative;
}
.galeri__card:hover { border-color: rgba(0,229,192,0.4); background: rgba(0,200,224,0.08); }
.galeri__card span { font-size: 40px; }

/* ── ALERTS ── */
.alert {
  padding: 14px 20px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  margin-bottom: 20px;
}
.alert--success { background: rgba(0,229,192,0.1); border: 1px solid rgba(0,229,192,0.3); color: var(--accent); }
.alert--error   { background: rgba(220,50,50,0.1); border: 1px solid rgba(220,50,50,0.3); color: #ff6b6b; }

/* ── 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; }
}

/* ── RESPONSIVE ── */
@media (max-width: 900px) {
  .nav__links, .nav .btn--outline { display: none; }
  .nav__burger { display: block; }
  .nav { padding: 0 20px; }

  .vision__inner,
  .contact__grid,
  .konsept__block { grid-template-columns: 1fr; gap: 40px; }
  .konsept__block.reverse { direction: ltr; }

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

@media (max-width: 600px) {
  .footer__inner { grid-template-columns: 1fr; }
  .hero__actions { flex-direction: column; align-items: center; }
  .cta__form { flex-direction: column; align-items: center; }
  .cta__form input[type="email"] { width: 100%; max-width: 340px; }
}

/* ── MOBILE NAV OPEN ── */
.nav.open .nav__links {
  display: flex;
  flex-direction: column;
  position: absolute;
  top: var(--nav-h);
  left: 0; right: 0;
  background: var(--deep);
  padding: 24px;
  gap: 20px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}