:root {
  --bg: #f3f4f3;
  --surface: #ffffff;
  --surface-2: #eceae4;
  --ink: #161a1d;
  --muted: #6e7475;
  --navy: #15191d;
  --blue: #2c3438;
  --teal: #5f6a6d;
  --green: #1f9d62;
  --red: #c93e36;
  --amber: #d3a13a;
  --amber-dark: #9d7426;
  --silver: #cfd2cf;
  --steel: #7f8584;
  --charcoal: #111416;
  --border: #d8d6cf;
  --shadow: 0 18px 42px rgba(17, 20, 22, 0.13);
  --gold-shadow: 0 18px 38px rgba(157, 116, 38, 0.20);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Inter", "Segoe UI", Arial, sans-serif;
  line-height: 1.5;
}

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

a {
  color: inherit;
  text-decoration: none;
}

.container {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  min-height: 76px;
  padding: 0 max(20px, calc((100vw - 1180px) / 2));
  background: rgba(243, 244, 243, 0.94);
  border-bottom: 1px solid rgba(216, 214, 207, 0.82);
  backdrop-filter: blur(14px);
}

.topbar.is-elevated {
  box-shadow: 0 10px 28px rgba(17, 41, 54, 0.08);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  color: var(--navy);
}

.brand img {
  width: 46px;
  height: 46px;
  object-fit: contain;
}

.nav {
  display: flex;
  align-items: center;
  gap: 22px;
  color: #2e3639;
  font-weight: 700;
  font-size: 14px;
}

.nav a:hover {
  color: var(--amber);
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--navy);
}

.hero {
  position: relative;
  min-height: 680px;
  padding: 110px 0 70px;
  background: linear-gradient(120deg, #f8f7f2 0%, #eceae4 48%, #d6d2c8 100%);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url("img/malzemecim-pro-logo.png");
  background-position: right 9% center;
  background-repeat: no-repeat;
  background-size: 580px;
  opacity: 0.22;
}

.hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 120px;
  background: #eceae4;
  z-index: 0;
}

.hero-inner {
  position: relative;
  z-index: 1;
}

.hero-copy {
  max-width: 690px;
  padding-top: 30px;
}

.eyebrow,
.section-kicker {
  margin: 0 0 10px;
  color: var(--amber);
  font-weight: 800;
  text-transform: uppercase;
  font-size: 13px;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 18px;
  color: var(--navy);
  font-size: 64px;
  line-height: 1.05;
  font-weight: 900;
}

h2 {
  color: var(--navy);
  font-size: 34px;
  line-height: 1.18;
  margin-bottom: 14px;
}

h3 {
  color: var(--navy);
  font-size: 19px;
  margin-bottom: 8px;
}

.lead {
  max-width: 650px;
  color: #41525b;
  font-size: 20px;
  margin-bottom: 28px;
}

.hero-actions,
.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 26px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 12px 18px;
  border-radius: var(--radius);
  font-weight: 800;
  border: 1px solid transparent;
}

.btn.primary {
  background: linear-gradient(135deg, var(--charcoal), #343a3d 52%, var(--amber));
  color: #fff;
}

.btn.secondary {
  background: var(--surface);
  color: var(--navy);
  border-color: var(--border);
}

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

.btn,
.download-card,
.feature-card,
.architecture article,
.ui-preview,
.security-list div {
  transition: transform 160ms ease, box-shadow 160ms ease, border-color 160ms ease;
}

.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.trust-row span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 38px;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: #30454e;
  font-weight: 700;
  font-size: 13px;
}

.section {
  padding: 74px 0;
}

.intro-band,
.product-band,
.contact-band {
  background: var(--surface-2);
}

.intro-grid,
.product-grid,
.security-grid,
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 46px;
  align-items: center;
}

.intro-grid p:last-child,
.product-grid p,
.security-grid p,
.contact-grid p,
.section-head p {
  color: var(--muted);
  font-size: 17px;
}

.section-head {
  max-width: 760px;
  margin-bottom: 30px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.feature-card,
.architecture article,
.download-card,
.ui-preview,
.security-list div {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: 0 8px 20px rgba(17, 41, 54, 0.05);
}

.feature-card {
  padding: 22px;
}

.feature-card svg,
.security-list svg,
.download-card svg {
  color: var(--amber);
}

.feature-card p,
.architecture p,
.download-card span,
.download-card small {
  color: var(--muted);
}

.check-list {
  display: grid;
  gap: 10px;
  padding: 0;
  margin: 22px 0 0;
  list-style: none;
}

.check-list li {
  display: flex;
  gap: 10px;
  align-items: center;
  font-weight: 700;
}

.check-list svg {
  color: var(--green);
  flex: 0 0 auto;
}

.ui-preview {
  padding: 20px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.preview-bar {
  display: flex;
  gap: 7px;
  margin-bottom: 18px;
}

.preview-bar span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border);
}

.preview-title {
  font-size: 22px;
  font-weight: 900;
  color: var(--navy);
  margin-bottom: 16px;
}

.preview-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-bottom: 16px;
}

.preview-metrics div {
  padding: 14px;
  border-radius: var(--radius);
  background: linear-gradient(135deg, #f9f8f3, #ece8dc);
}

.preview-metrics strong {
  display: block;
  color: var(--amber);
  font-size: 26px;
}

.preview-metrics small {
  color: var(--muted);
  font-weight: 700;
}

.preview-table {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.preview-row {
  display: grid;
  grid-template-columns: 1.2fr 0.7fr 1fr;
}

.preview-row span {
  padding: 12px;
  border-bottom: 1px solid var(--border);
  color: #233740;
  font-size: 14px;
}

.preview-row.head span {
  background: linear-gradient(135deg, #111416, #252b2f);
  color: #fff;
  font-weight: 800;
}

.preview-row:last-child span {
  border-bottom: 0;
}

.architecture {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.architecture article {
  padding: 20px;
}

.architecture article span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  margin-bottom: 16px;
  border-radius: 50%;
  background: linear-gradient(135deg, #f7ecd0, #d3a13a);
  color: var(--amber);
  font-weight: 900;
}

.security-band {
  background: var(--surface);
}

.security-list {
  display: grid;
  gap: 12px;
}

.security-list div {
  display: grid;
  grid-template-columns: 38px 1fr;
  align-items: center;
  padding: 15px;
  color: #263b45;
  font-weight: 700;
}

.downloads {
  background: linear-gradient(120deg, #f8f7f2 0%, #eceae4 48%, #d6d2c8 100%);
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.download-card {
  display: grid;
  gap: 8px;
  min-height: 190px;
  padding: 24px;
}

.download-card strong {
  color: var(--navy);
  font-size: 24px;
}

.download-card small {
  word-break: break-word;
}

.download-card:hover {
  border-color: var(--amber);
  box-shadow: var(--shadow);
}

.download-card.soon {
  border-style: dashed;
}

.download-card.soon svg {
  color: var(--amber);
}

.contact-actions {
  justify-content: flex-end;
  margin-bottom: 0;
}

.footer {
  background: linear-gradient(135deg, #111416, #252b2f);
  color: #dbe7eb;
  padding: 24px 0;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  font-size: 14px;
}

svg {
  width: 20px;
  height: 20px;
  stroke-width: 2.2;
}

@media (max-width: 960px) {
  .hero {
    min-height: 640px;
  }

  .hero-bg {
    background-size: 430px;
    background-position: right -90px center;
  }

  h1 {
    font-size: 50px;
  }

  h2 {
    font-size: 29px;
  }

  .feature-grid,
  .architecture,
  .download-grid,
  .intro-grid,
  .product-grid,
  .security-grid,
  .contact-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 720px) {
  .container {
    width: min(100% - 28px, 1180px);
  }

  .topbar {
    min-height: 68px;
    padding: 0 14px;
  }

  .brand img {
    width: 40px;
    height: 40px;
  }

  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .nav {
    position: absolute;
    top: 68px;
    left: 14px;
    right: 14px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface);
    box-shadow: var(--shadow);
  }

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

  .nav a {
    padding: 12px;
    border-radius: var(--radius);
  }

  .hero {
    min-height: 620px;
    padding: 88px 0 52px;
  }

  .hero-bg {
    background-size: 330px;
    background-position: right -150px top 90px;
    opacity: 0.13;
  }

  .hero-copy {
    padding-top: 8px;
  }

  h1 {
    font-size: 42px;
  }

  h2 {
    font-size: 26px;
  }

  .lead {
    font-size: 18px;
  }

  .section {
    padding: 54px 0;
  }

  .feature-grid,
  .architecture,
  .download-grid,
  .intro-grid,
  .product-grid,
  .security-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .preview-metrics,
  .preview-row {
    grid-template-columns: 1fr;
  }

  .preview-row span {
    border-bottom: 1px solid var(--border);
  }

  .contact-actions {
    justify-content: flex-start;
  }

  .footer-inner {
    flex-direction: column;
  }
}

/* Logo paleti: grafit, metalik gumus ve altin vurgu */
.brand img,
.hero-bg {
  filter: drop-shadow(0 16px 26px rgba(17, 20, 22, 0.18));
}

.brand span,
h1,
h2,
h3 {
  letter-spacing: 0;
}

.eyebrow,
.section-kicker {
  color: var(--amber-dark);
}

.btn.primary {
  box-shadow: var(--gold-shadow);
}

.btn.secondary,
.trust-row span,
.feature-card,
.architecture article,
.download-card,
.ui-preview,
.security-list div {
  border-color: rgba(127, 133, 132, 0.26);
}

.feature-card svg,
.security-list svg,
.download-card svg,
.check-list svg {
  color: var(--amber-dark);
}

.preview-row.head span {
  background: linear-gradient(135deg, #15191d, #2f3639);
}

.preview-metrics strong,
.download-card strong {
  color: var(--charcoal);
}

.download-card:hover {
  border-color: var(--amber);
  box-shadow: var(--gold-shadow);
}

.footer {
  border-top: 3px solid var(--amber);
}