/* =============================================
   DTM Pazarlama — Professional Website Styles
   White-dominant, elegant, minimal
   ============================================= */

:root {
  --color-white: #ffffff;
  --color-off-white: #fafafa;
  --color-light: #f5f5f5;
  --color-border: #e8e8e8;
  --color-muted: #888888;
  --color-text: #333333;
  --color-dark: #1a1a1a;
  --color-black: #000000;

  --font-serif: 'Playfair Display', Georgia, serif;
  --font-sans: 'Montserrat', 'Helvetica Neue', sans-serif;

  --header-height: 80px;
  --section-padding: 100px;
  --container-width: 1200px;
  --transition: 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition);
}

ul {
  list-style: none;
}

.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: var(--section-padding) 0;
}

.section__tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: 16px;
}

.section__title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 600;
  color: var(--color-dark);
  line-height: 1.25;
  margin-bottom: 20px;
}

.section__desc {
  font-size: 17px;
  color: var(--color-muted);
  max-width: 560px;
  line-height: 1.8;
}

.section__header {
  text-align: center;
  margin-bottom: 64px;
}

.section__header .section__desc {
  margin: 0 auto;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
}

.btn--primary {
  background: var(--color-dark);
  color: var(--color-white);
  border-color: var(--color-dark);
}

.btn--primary:hover {
  background: var(--color-black);
  border-color: var(--color-black);
}

.btn--outline {
  background: transparent;
  color: var(--color-dark);
  border-color: var(--color-dark);
}

.btn--outline:hover {
  background: var(--color-dark);
  color: var(--color-white);
}

.btn--dark {
  background: var(--color-white);
  color: var(--color-dark);
  border-color: var(--color-white);
  white-space: nowrap;
}

.btn--dark:hover {
  background: transparent;
  color: var(--color-white);
}

/* =============================================
   Header / Navigation
   ============================================= */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.header--scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.04);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav__logo img {
  height: 52px;
  width: auto;
}

.nav__menu {
  display: flex;
  align-items: center;
  gap: 40px;
}

.nav__link {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--color-text);
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-dark);
  transition: width var(--transition);
}

.nav__link:hover::after,
.nav__link.active::after {
  width: 100%;
}

.nav__link--cta {
  padding: 10px 24px;
  border: 1.5px solid var(--color-dark);
  transition: all var(--transition);
}

.nav__link--cta::after {
  display: none;
}

.nav__link--cta:hover {
  background: var(--color-dark);
  color: var(--color-white);
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-dark);
  transition: all var(--transition);
}

/* =============================================
   Hero
   ============================================= */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: var(--header-height);
  overflow: hidden;
  background: var(--color-white);
}

.hero__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 80% 20%, rgba(0,0,0,0.02) 0%, transparent 60%),
    radial-gradient(ellipse at 20% 80%, rgba(0,0,0,0.015) 0%, transparent 50%);
  pointer-events: none;
}

.hero__content {
  position: relative;
  text-align: center;
  max-width: 780px;
  padding: 60px 24px;
}

.hero__tag {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: 24px;
}

.hero__title {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 600;
  color: var(--color-dark);
  line-height: 1.15;
  margin-bottom: 28px;
}

.hero__desc {
  font-size: 18px;
  color: var(--color-muted);
  line-height: 1.8;
  max-width: 580px;
  margin: 0 auto 40px;
}

.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: 12px;
  color: var(--color-muted);
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.hero__scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--color-muted), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.4; transform: scaleY(1); }
  50% { opacity: 1; transform: scaleY(1.2); }
}

/* =============================================
   Stats
   ============================================= */
.stats {
  background: var(--color-off-white);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: 48px 0;
}

.stats__grid {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  flex-wrap: wrap;
}

.stats__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 16px 48px;
  text-align: center;
}

.stats__number {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 4px;
}

.stats__label {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-muted);
}

.stats__divider {
  width: 1px;
  height: 48px;
  background: var(--color-border);
}

/* =============================================
   About
   ============================================= */
.about {
  background: var(--color-white);
}

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

.about__visual {
  display: flex;
  justify-content: center;
}

.about__image-frame {
  position: relative;
  width: 100%;
  max-width: 420px;
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-off-white);
  border: 1px solid var(--color-border);
}

.about__pattern {
  position: absolute;
  inset: 20px;
  border: 1px solid var(--color-border);
  pointer-events: none;
}

.about__logo {
  width: 70%;
  position: relative;
  z-index: 1;
}

.about__text p {
  margin-bottom: 20px;
  color: var(--color-muted);
  line-height: 1.85;
}

.about__text p strong {
  color: var(--color-dark);
}

.about__features {
  margin-top: 32px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.about__features li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-dark);
}

.about__features svg {
  flex-shrink: 0;
  color: var(--color-dark);
}

/* =============================================
   Products
   ============================================= */
.products {
  background: var(--color-off-white);
}

.products__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.product-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  padding: 40px 32px;
  transition: box-shadow var(--transition), transform var(--transition);
}

.product-card:hover {
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.06);
  transform: translateY(-4px);
}

.product-card__icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border);
  margin-bottom: 24px;
  color: var(--color-dark);
}

.product-card__title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 12px;
}

.product-card__desc {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.75;
}

/* =============================================
   CTA Banner
   ============================================= */
.cta-banner {
  background: var(--color-dark);
  padding: 64px 0;
}

.cta-banner__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}

.cta-banner__text h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: 8px;
}

.cta-banner__text p {
  color: rgba(255, 255, 255, 0.65);
  font-size: 15px;
}

/* =============================================
   Contact
   ============================================= */
.contact {
  background: var(--color-white);
}

.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
  align-items: start;
}

.contact__cards {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-card {
  display: flex;
  gap: 20px;
  padding: 28px;
  background: var(--color-off-white);
  border: 1px solid var(--color-border);
  transition: box-shadow var(--transition);
}

.contact-card:hover {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.contact-card__icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  color: var(--color-dark);
}

.contact-card__title {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: 8px;
}

.contact-card__value {
  display: block;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-dark);
  line-height: 1.6;
  transition: color var(--transition);
}

a.contact-card__value:hover {
  color: var(--color-muted);
}

.contact-card__value + .contact-card__value {
  margin-top: 4px;
}

.contact__map {
  height: 420px;
  border: 1px solid var(--color-border);
  overflow: hidden;
}

.contact__map iframe {
  width: 100%;
  height: 100%;
  filter: grayscale(20%);
}

/* =============================================
   Footer
   ============================================= */
.footer {
  background: var(--color-off-white);
  border-top: 1px solid var(--color-border);
}

.footer__inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 48px;
  padding: 64px 24px 48px;
  align-items: start;
}

.footer__brand img {
  height: 48px;
  width: auto;
  margin-bottom: 12px;
}

.footer__brand p {
  font-size: 14px;
  color: var(--color-muted);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer__links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text);
  transition: color var(--transition);
}

.footer__links a:hover {
  color: var(--color-muted);
}

.footer__contact {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer__contact a {
  font-size: 14px;
  color: var(--color-muted);
  transition: color var(--transition);
}

.footer__contact a:hover {
  color: var(--color-dark);
}

.footer__bottom {
  border-top: 1px solid var(--color-border);
  padding: 20px 0;
}

.footer__bottom p {
  font-size: 13px;
  color: var(--color-muted);
  text-align: center;
}

/* =============================================
   Responsive
   ============================================= */
@media (max-width: 1024px) {
  :root {
    --section-padding: 72px;
  }

  .about__grid {
    gap: 48px;
  }

  .products__grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .contact__map {
    height: 320px;
  }

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

@media (max-width: 768px) {
  :root {
    --header-height: 70px;
    --section-padding: 56px;
  }

  .nav__toggle {
    display: flex;
  }

  .nav__menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-white);
    flex-direction: column;
    padding: 32px 24px;
    gap: 24px;
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-110%);
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition);
  }

  .nav__menu.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .nav__toggle.open span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }

  .nav__toggle.open span:nth-child(2) {
    opacity: 0;
  }

  .nav__toggle.open span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  .hero__scroll {
    display: none;
  }

  .stats__divider {
    display: none;
  }

  .stats__item {
    padding: 12px 24px;
    width: 50%;
  }

  .about__grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .about__image-frame {
    max-width: 300px;
    margin: 0 auto;
  }

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

  .cta-banner__inner {
    flex-direction: column;
    text-align: center;
  }

  .footer__inner {
    grid-template-columns: 1fr;
    gap: 32px;
    text-align: center;
  }

  .footer__brand img {
    margin: 0 auto 12px;
  }

  .footer__links {
    align-items: center;
  }

  .footer__contact {
    align-items: center;
  }
}

@media (max-width: 480px) {
  .hero__actions {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    max-width: 280px;
  }
}