/* ===== DEĞİŞKENLER ===== */
:root {
  --blue: #0077b6;
  --blue-dark: #023e8a;
  --blue-light: #48cae4;
  --cyan: #00b4d8;
  --sand: #f8fbfd;
  --ink: #14303f;
  --gray: #5b6b75;
  --line: #e4edf2;
  --white: #ffffff;
  --radius: 16px;
  --shadow: 0 10px 30px rgba(2, 62, 138, 0.08);
  --shadow-lg: 0 20px 50px rgba(2, 62, 138, 0.15);
  --max: 1180px;
}

/* ===== RESET ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 90px; }
body {
  font-family: 'Poppins', system-ui, -apple-system, sans-serif;
  color: var(--ink);
  background: var(--white);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

.container { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 20px; }

/* ===== BUTONLAR ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px; padding: 14px 28px; border-radius: 50px;
  font-weight: 600; font-size: 1rem; cursor: pointer;
  border: 2px solid transparent; transition: all .25s ease; white-space: nowrap;
}
.btn-primary { background: var(--blue); color: #fff; box-shadow: 0 8px 20px rgba(0,119,182,.3); }
.btn-primary:hover { background: var(--blue-dark); transform: translateY(-2px); box-shadow: 0 12px 26px rgba(0,119,182,.4); }
.btn-outline { background: transparent; color: var(--blue); border-color: var(--blue); }
.btn-outline:hover { background: var(--blue); color: #fff; }
.btn-block { width: 100%; }

/* ===== ÜST BAR ===== */
.topbar { background: var(--blue-dark); color: #dff3ff; font-size: .85rem; }
.topbar-inner { display: flex; gap: 22px; justify-content: center; padding: 8px 20px; flex-wrap: wrap; }
.topbar-item { transition: color .2s; }
.topbar-item:hover { color: #fff; }

/* ===== HEADER ===== */
.header {
  position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,.92);
  backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); transition: box-shadow .3s;
}
.header.scrolled { box-shadow: var(--shadow); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }

.logo { display: flex; align-items: center; gap: 10px; font-size: 1.25rem; font-weight: 600; }
.logo-img { height: 46px; width: auto; border-radius: 10px; object-fit: contain; }
.logo-text strong { color: var(--blue); }

.nav { display: flex; align-items: center; gap: 6px; }
.nav-link { padding: 8px 16px; border-radius: 8px; font-weight: 500; color: var(--ink); transition: all .2s; }
.nav-link:hover { color: var(--blue); background: var(--sand); }
.nav-cta { margin-left: 8px; padding: 10px 22px; background: var(--blue); color: #fff; border-radius: 50px; font-weight: 600; transition: all .2s; }
.nav-cta:hover { background: var(--blue-dark); }

.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 6px; }
.nav-toggle span { width: 26px; height: 3px; background: var(--ink); border-radius: 3px; transition: all .3s; }
.nav-toggle.active span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* ===== HERO ===== */
.hero { position: relative; background: linear-gradient(160deg, #e8f6fc 0%, #f8fbfd 60%); padding: 60px 0 120px; overflow: hidden; }
.hero-inner { display: grid; grid-template-columns: 1.1fr .9fr; align-items: center; gap: 40px; }
.hero-badge { display: inline-block; background: #fff; color: var(--blue); padding: 7px 16px; border-radius: 50px; font-size: .85rem; font-weight: 600; box-shadow: var(--shadow); margin-bottom: 20px; }
.hero h1 { font-size: clamp(2rem, 5vw, 3.2rem); line-height: 1.15; font-weight: 800; margin-bottom: 18px; }
.highlight { color: var(--blue); position: relative; }
.hero p { font-size: 1.1rem; color: var(--gray); max-width: 520px; margin-bottom: 30px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 40px; }
.hero-stats { display: flex; gap: 36px; flex-wrap: wrap; }
.stat strong { display: block; font-size: 1.8rem; font-weight: 800; color: var(--blue-dark); }
.stat span { font-size: .9rem; color: var(--gray); }

.hero-visual { display: grid; place-items: center; }
.hero-card {
  width: min(340px, 80%); aspect-ratio: 1; border-radius: 30px; display: grid; place-items: center;
  font-size: 8rem; background: linear-gradient(145deg, var(--blue-light), var(--blue));
  box-shadow: var(--shadow-lg); animation: float 4s ease-in-out infinite;
}
.hero-img {
  width: min(380px, 90%); aspect-ratio: 1; object-fit: cover; border-radius: 30px;
  box-shadow: var(--shadow-lg); animation: float 4s ease-in-out infinite;
}
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-16px); } }

.hero-wave { position: absolute; bottom: -1px; left: 0; width: 100%; height: 80px;
  background: var(--white); clip-path: ellipse(75% 100% at 50% 100%); }

/* ===== FEATURES ===== */
.features { background: var(--white); padding: 50px 0; }
.features-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.feature { text-align: center; padding: 28px 20px; border-radius: var(--radius); border: 1px solid var(--line); transition: all .25s; }
.feature:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: transparent; }
.feature-icon { font-size: 2.4rem; margin-bottom: 12px; }
.feature h3 { font-size: 1.1rem; margin-bottom: 6px; }
.feature p { color: var(--gray); font-size: .92rem; }

/* ===== BÖLÜM GENEL ===== */
.section { padding: 80px 0; }
.section-tag { display: inline-block; color: var(--blue); font-weight: 700; text-transform: uppercase; letter-spacing: 1px; font-size: .82rem; margin-bottom: 10px; }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 50px; }
.section h2 { font-size: clamp(1.7rem, 4vw, 2.4rem); font-weight: 800; margin-bottom: 12px; }
.section-sub { color: var(--gray); font-size: 1.05rem; }

/* ===== HAKKIMIZDA ===== */
.about { background: var(--sand); }
.about-inner { display: grid; grid-template-columns: .85fr 1.15fr; gap: 50px; align-items: center; }
.about-visual { position: relative; display: grid; place-items: center; }
.about-emoji { width: 100%; aspect-ratio: 4/3; border-radius: var(--radius); display: grid; place-items: center; font-size: 7rem; background: linear-gradient(145deg, #caf0f8, #90e0ef); box-shadow: var(--shadow); }
.about-img { width: 100%; aspect-ratio: 4/3; border-radius: var(--radius); object-fit: cover; box-shadow: var(--shadow); }
.about-badge { position: absolute; top: 16px; right: 16px; background: var(--blue); color: #fff; padding: 12px 18px; border-radius: 14px; font-weight: 800; box-shadow: var(--shadow-lg); z-index: 2; }
.about-content h2 { margin-bottom: 16px; }
.about-content p { color: var(--gray); margin-bottom: 14px; }
.about-list { display: grid; gap: 10px; margin-top: 18px; }
.about-list li { font-weight: 500; }

/* ===== ÜRÜNLER ===== */
.products-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.product-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: all .25s; }
.product-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); border-color: transparent; }
.product-img { position: relative; aspect-ratio: 4/3; overflow: hidden; background: linear-gradient(145deg, #e8f6fc, #caf0f8); }
.product-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.product-card:hover .product-img img { transform: scale(1.06); }
.product-body { padding: 20px 22px 26px; text-align: center; }
.product-card h3 { font-size: 1.15rem; margin-bottom: 8px; }
.product-card p { color: var(--gray); font-size: .92rem; }

/* ===== İLETİŞİM ===== */
.contact { background: var(--sand); }
.contact-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 34px; align-items: start; }
.contact-info { display: grid; gap: 16px; }
.contact-item { display: flex; align-items: center; gap: 16px; background: #fff; padding: 18px 20px; border-radius: var(--radius); border: 1px solid var(--line); transition: all .2s; }
.contact-item:hover { box-shadow: var(--shadow); transform: translateX(4px); }
.contact-ic { font-size: 1.5rem; width: 48px; height: 48px; display: grid; place-items: center; background: var(--sand); border-radius: 12px; flex-shrink: 0; }
.contact-item strong { display: block; font-size: 1rem; }
.contact-item span { color: var(--gray); font-size: .9rem; }

.contact-form { background: #fff; padding: 30px; border-radius: var(--radius); box-shadow: var(--shadow); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-weight: 500; font-size: .9rem; margin-bottom: 6px; }
.form-group input, .form-group textarea {
  width: 100%; padding: 13px 16px; border: 1.5px solid var(--line); border-radius: 12px;
  font-family: inherit; font-size: 1rem; color: var(--ink); transition: border-color .2s, box-shadow .2s; background: var(--sand);
}
.form-group input:focus, .form-group textarea:focus { outline: none; border-color: var(--blue); box-shadow: 0 0 0 3px rgba(0,119,182,.12); background: #fff; }
.form-group textarea { resize: vertical; }
.form-note { text-align: center; margin-top: 14px; font-weight: 600; min-height: 20px; }
.form-note.ok { color: #1b9c5c; }
.form-note.err { color: #d64545; }

/* ===== FOOTER ===== */
.footer { background: var(--ink); color: #c6d4dd; padding-top: 60px; }
.footer-inner { display: grid; grid-template-columns: 1.4fr 1fr 1.2fr; gap: 40px; padding-bottom: 40px; }
.footer-col h4 { color: #fff; margin-bottom: 16px; font-size: 1.1rem; }
.footer-col a, .footer-col span { display: block; color: #a9bcc7; margin-bottom: 10px; transition: color .2s; }
.footer-col a:hover { color: var(--blue-light); }
.footer-col p { color: #a9bcc7; margin-top: 14px; }
.logo-light .logo-text { color: #fff; }
.logo-light .logo-text strong { color: var(--blue-light); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); padding: 20px 0; text-align: center; font-size: .88rem; color: #8ba0ac; }

/* ===== WHATSAPP FLOAT ===== */
.whatsapp-float {
  position: fixed; right: 22px; bottom: 22px; z-index: 90;
  width: 60px; height: 60px; border-radius: 50%; background: #25d366; color: #fff;
  display: grid; place-items: center; box-shadow: 0 8px 24px rgba(37,211,102,.5);
  transition: transform .2s; animation: pulse 2.5s infinite;
}
.whatsapp-float svg { width: 32px; height: 32px; }
.whatsapp-float:hover { transform: scale(1.1); }
@keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(37,211,102,.5); } 70% { box-shadow: 0 0 0 16px rgba(37,211,102,0); } 100% { box-shadow: 0 0 0 0 rgba(37,211,102,0); } }

/* ===== RESPONSIVE / MOBİL ===== */
@media (max-width: 900px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-inner { grid-template-columns: 1fr; text-align: center; }
  .hero p { margin-left: auto; margin-right: auto; }
  .hero-actions, .hero-stats { justify-content: center; }
  .hero-visual { grid-row: 1; margin-bottom: 10px; }
  .about-inner { grid-template-columns: 1fr; gap: 34px; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  /* Mobil menü */
  .nav {
    position: fixed; top: 72px; right: 0; height: calc(100vh - 72px); width: min(80%, 300px);
    background: #fff; flex-direction: column; align-items: stretch; gap: 4px; padding: 24px;
    box-shadow: -10px 0 40px rgba(0,0,0,.12); transform: translateX(100%); transition: transform .3s ease; z-index: 99;
  }
  .nav.open { transform: translateX(0); }
  .nav-link { padding: 14px 16px; font-size: 1.05rem; border-bottom: 1px solid var(--line); border-radius: 0; }
  .nav-cta { margin: 16px 0 0; text-align: center; padding: 14px; }
  .nav-toggle { display: flex; }
}

@media (max-width: 560px) {
  .section { padding: 56px 0; }
  .hero { padding: 40px 0 90px; }
  .features-grid { grid-template-columns: 1fr; }
  .products-grid { grid-template-columns: 1fr 1fr; gap: 14px; }
  .product-card { padding: 24px 14px; }
  .product-emoji { font-size: 2.4rem; }
  .form-row { grid-template-columns: 1fr; gap: 0; }
  .footer-inner { grid-template-columns: 1fr; gap: 28px; }
  .hero-stats { gap: 24px; }
  .stat strong { font-size: 1.5rem; }
  .topbar-inner { gap: 14px; font-size: .78rem; }
  .contact-form { padding: 22px 18px; }
  .btn { width: 100%; }
  .hero-actions { flex-direction: column; }
}

@media (max-width: 380px) {
  .products-grid { grid-template-columns: 1fr; }
}