/* ═══════════════════════════════════════
   ÖZAYDIN ÇELİK YAPI — STYLESHEET
   Katalog ağırlıklı · Sıcak beyaz tema
   Referans his: oskacelikev.com
   ═══════════════════════════════════════ */

/* ─── RESET & CUSTOM PROPERTIES ─── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --white:   #FFFFFF;
  --cream:   #F7F5F1;
  --dark:    #1A1A1A;
  --mid:     #555555;
  --light:   #E8E5DF;
  --accent:  #B8962E;
  --accent2: #D4B896;
  --nav-h:   72px;
  --radius:  6px;
  --shadow:  0 2px 16px rgba(0,0,0,0.08);
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Inter', sans-serif;
  font-weight: 400;
  color: var(--dark);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

ul {
  list-style: none;
}

button {
  cursor: pointer;
  font-family: inherit;
}

/* ─── UTILITY ─── */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.section {
  padding: 72px 0;
}

.section__header {
  text-align: center;
  margin-bottom: 48px;
}

.section__title {
  font-family: 'Playfair Display', serif;
  font-size: clamp(1.75rem, 3.5vw, 2.6rem);
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 12px;
  line-height: 1.25;
}

.section__sub {
  font-size: 1rem;
  color: var(--mid);
  font-weight: 300;
  max-width: 540px;
  margin: 0 auto;
}

/* ─── BUTTONS ─── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: var(--radius);
  font-family: 'Inter', sans-serif;
  font-size: 0.92rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  border: 2px solid transparent;
  transition: background .2s, color .2s, border-color .2s, transform .15s;
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-1px);
}

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

.btn--accent:hover {
  background: #a07a1e;
  border-color: #a07a1e;
}

.btn--outline {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,0.7);
}

.btn--outline:hover {
  background: rgba(255,255,255,0.15);
  border-color: var(--white);
}

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

.btn--white:hover {
  background: var(--cream);
}

.btn--whatsapp {
  background: #25D366;
  color: var(--white);
  border-color: #25D366;
}

.btn--whatsapp:hover {
  background: #1da851;
  border-color: #1da851;
}

.btn--full {
  width: 100%;
  justify-content: center;
}

/* ─── NAV ─── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 900;
  background: var(--white);
  border-bottom: 2px solid var(--accent);
  height: var(--nav-h);
  transition: box-shadow .3s;
}

.nav--scrolled {
  box-shadow: 0 2px 20px rgba(0,0,0,0.10);
}

.nav__inner {
  display: flex;
  align-items: center;
  height: var(--nav-h);
  gap: 16px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.nav__logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
}

.nav__logo-img {
  height: 50px;
  width: auto;
  object-fit: contain;
}

.nav__logo-img--light {
  filter: brightness(10);
}

.nav__links {
  display: none;
  flex: 1;
  justify-content: center;
  align-items: center;
  gap: 0;
}

.nav__links li a {
  display: block;
  padding: 8px 16px;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--dark);
  letter-spacing: 0.02em;
  transition: color .2s;
}

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

.nav__actions {
  display: none;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.nav__phone {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--dark);
  transition: color .2s;
}

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

/* Hamburger */
.hamburger {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 28px;
  height: 20px;
  background: none;
  border: none;
  margin-left: auto;
  padding: 0;
  flex-shrink: 0;
}

.hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--dark);
  border-radius: 2px;
  transition: transform .3s, opacity .3s;
}

.hamburger.active span:nth-child(1) {
  transform: translateY(9px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: translateY(-9px) rotate(-45deg);
}

/* Mobile nav overlay */
.nav__links.open {
  display: flex;
  flex-direction: column;
  position: fixed;
  top: var(--nav-h);
  left: 0;
  right: 0;
  background: var(--white);
  border-bottom: 2px solid var(--accent);
  padding: 16px 0 24px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.12);
  z-index: 899;
  gap: 0;
}

.nav__links.open li a {
  padding: 12px 24px;
  font-size: 1rem;
  border-bottom: 1px solid var(--light);
}

@media (min-width: 768px) {
  .hamburger {
    display: none;
  }

  .nav__links {
    display: flex;
  }

  .nav__actions {
    display: flex;
  }
}

/* ─── HERO ─── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: flex-end;
  padding-top: var(--nav-h);
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  background-color: #2a2a2a;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.50);
}

.hero__content {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px 64px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
}

.hero__text {
  max-width: 600px;
}

.hero__eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--accent2);
  text-transform: uppercase;
  margin-bottom: 16px;
}

.hero__title {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2.2rem, 5.5vw, 4rem);
  font-weight: 700;
  color: var(--white);
  line-height: 1.15;
  margin-bottom: 20px;
}

.hero__desc {
  font-size: 1rem;
  font-weight: 300;
  color: rgba(255,255,255,0.80);
  line-height: 1.7;
  margin-bottom: 28px;
  max-width: 480px;
}

.hero__btns {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero__badges {
  display: none;
  flex-direction: column;
  gap: 10px;
  flex-shrink: 0;
}

.hero__badge {
  background: rgba(0,0,0,0.55);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.15);
  color: var(--white);
  font-size: 0.85rem;
  font-weight: 500;
  padding: 12px 18px;
  border-radius: var(--radius);
  white-space: nowrap;
}

@media (min-width: 900px) {
  .hero__badges {
    display: flex;
  }
}

/* ─── YAPI TİPLERİ ─── */
.yapi-tipleri {
  background: var(--white);
}

.yapi-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

@media (min-width: 640px) {
  .yapi-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.yapi-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--light);
  transition: box-shadow .3s, transform .3s;
}

.yapi-card:hover {
  box-shadow: 0 8px 32px rgba(0,0,0,0.13);
  transform: translateY(-3px);
}

.yapi-card__img-wrap {
  aspect-ratio: 3/2;
  overflow: hidden;
}

.yapi-card__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}

.yapi-card:hover .yapi-card__img {
  transform: scale(1.04);
}

.yapi-card__body {
  padding: 24px;
}

.yapi-card__icon {
  font-size: 1.6rem;
  margin-bottom: 10px;
}

.yapi-card__title {
  font-family: 'Playfair Display', serif;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 8px;
}

.yapi-card__desc {
  font-size: 0.9rem;
  font-weight: 300;
  color: var(--mid);
  line-height: 1.65;
  margin-bottom: 16px;
}

.yapi-card__link {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.01em;
  transition: color .2s;
}

.yapi-card__link:hover {
  color: #8a6e1e;
}

/* ─── İSTATİSTİK BANDI ─── */
.stats {
  background: var(--cream);
  padding: 64px 0;
  border-top: 1px solid var(--light);
  border-bottom: 1px solid var(--light);
}

.stats__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px 24px;
  text-align: center;
}

@media (min-width: 768px) {
  .stats__grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.stats__val {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 2px;
  margin-bottom: 8px;
}

.stats__number {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
}

.stats__suffix {
  font-family: 'Playfair Display', serif;
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
}

.stats__label {
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--mid);
  line-height: 1.4;
}

/* ─── HİZMETLER ─── */
.hizmetler {
  background: var(--white);
}

.hizmetler__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
}

@media (min-width: 768px) {
  .hizmetler__layout {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }
}

.hizmetler__desc {
  font-size: 1rem;
  font-weight: 300;
  color: var(--mid);
  line-height: 1.75;
  margin-bottom: 24px;
}

.hizmetler__vurgu {
  background: var(--cream);
  border-left: 3px solid var(--accent);
  padding: 18px 20px;
  font-size: 0.95rem;
  color: var(--dark);
  line-height: 1.6;
  margin-bottom: 24px;
  border-radius: 0 var(--radius) var(--radius) 0;
}

.hizmetler__foto {
  width: 100%;
  border-radius: var(--radius);
  object-fit: cover;
  aspect-ratio: 4/3;
}

.hizmetler__liste {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

.hizmetler__liste li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 0;
  font-size: 0.9rem;
  color: var(--dark);
  font-weight: 400;
  border-bottom: 1px solid var(--light);
}

.hizmetler__liste li:last-child {
  border-bottom: none;
}

.hizmetler__check {
  color: var(--accent);
  font-weight: 600;
  flex-shrink: 0;
  line-height: 1.6;
}

/* ─── PROJELER GALERİSİ ─── */
.projeler {
  background: var(--cream);
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 32px;
}

.filter-btn {
  padding: 8px 20px;
  border: 1.5px solid var(--light);
  background: var(--white);
  border-radius: 100px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--mid);
  transition: background .2s, color .2s, border-color .2s;
}

.filter-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.filter-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--white);
}

/* Masonry Grid */
.masonry {
  columns: 1;
  column-gap: 12px;
}

@media (min-width: 560px) {
  .masonry {
    columns: 2;
  }
}

@media (min-width: 900px) {
  .masonry {
    columns: 3;
  }
}

.masonry-item {
  break-inside: avoid;
  margin-bottom: 12px;
}

.masonry-item.hidden {
  display: none;
}

.masonry-card {
  position: relative;
  border-radius: 4px;
  overflow: hidden;
  cursor: pointer;
}

.masonry-card img {
  width: 100%;
  display: block;
  border-radius: 4px;
  transition: transform .4s ease;
}

.masonry-card:hover img {
  transform: scale(1.03);
}

.masonry-card__overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.48);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity .3s;
  border-radius: 4px;
}

.masonry-card:hover .masonry-card__overlay {
  opacity: 1;
}

.masonry-card__overlay span {
  color: var(--white);
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.04em;
}

.masonry-card__info {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.65) 0%, transparent 100%);
  color: rgba(255,255,255,0.90);
  font-size: 0.75rem;
  font-weight: 400;
  padding: 24px 10px 8px;
  pointer-events: none;
}

/* ─── LIGHTBOX ─── */
.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(0,0,0,0.93);
  align-items: center;
  justify-content: center;
}

.lightbox.open {
  display: flex;
}

.lightbox img {
  max-width: 90vw;
  max-height: 88vh;
  object-fit: contain;
  border-radius: 4px;
  display: block;
}

.lightbox-close {
  position: absolute;
  top: 1.2rem;
  right: 1.5rem;
  color: var(--white);
  font-size: 2.2rem;
  cursor: pointer;
  background: none;
  border: none;
  line-height: 1;
  opacity: 0.8;
  transition: opacity .2s;
}

.lightbox-close:hover {
  opacity: 1;
}

.lightbox-prev,
.lightbox-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255,255,255,0.12);
  color: var(--white);
  border: none;
  font-size: 2.2rem;
  padding: .4rem 1rem;
  cursor: pointer;
  border-radius: 3px;
  transition: background .2s;
  line-height: 1;
}

.lightbox-prev:hover,
.lightbox-next:hover {
  background: rgba(255,255,255,0.25);
}

.lightbox-prev {
  left: 1rem;
}

.lightbox-next {
  right: 1rem;
}

/* ─── DRONE VİDEO ─── */
.drone-video {
  background: var(--dark);
  padding: 80px 0;
  text-align: center;
}

.drone-video__title {
  font-family: 'Playfair Display', serif;
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 700;
  color: var(--white);
  margin-bottom: 32px;
}

.drone-video__embed {
  position: relative;
  max-width: 900px;
  margin: 0 auto 24px;
  aspect-ratio: 16/9;
  border-radius: var(--radius);
  overflow: hidden;
}

.drone-video__embed iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: none;
}

.drone-video__desc {
  font-size: 0.9rem;
  font-weight: 300;
  color: rgba(255,255,255,0.55);
  max-width: 500px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ─── SÜREÇ ─── */
.surec {
  background: var(--white);
}

.surec__timeline {
  display: flex;
  flex-direction: column;
  gap: 32px;
  position: relative;
}

@media (min-width: 768px) {
  .surec__timeline {
    flex-direction: row;
    justify-content: space-between;
    gap: 16px;
  }

  .surec__timeline::before {
    content: "";
    position: absolute;
    top: 28px;
    left: 5%;
    right: 5%;
    height: 1px;
    background: linear-gradient(to right, var(--accent), var(--accent2), var(--accent));
    z-index: 0;
  }
}

.surec__adim {
  flex: 1;
  text-align: center;
  position: relative;
  z-index: 1;
}

.surec__no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--white);
  font-family: 'Playfair Display', serif;
  font-size: 1.3rem;
  font-weight: 700;
  margin: 0 auto 8px;
}

.surec__ikon {
  font-size: 1.4rem;
  margin-bottom: 12px;
}

.surec__baslik {
  font-family: 'Playfair Display', serif;
  font-size: 1rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 8px;
}

.surec__aciklama {
  font-size: 0.85rem;
  font-weight: 300;
  color: var(--mid);
  line-height: 1.6;
}

/* ─── İLETİŞİM ─── */
.iletisim {
  background: var(--cream);
}

.iletisim__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
}

@media (min-width: 768px) {
  .iletisim__layout {
    grid-template-columns: 1fr 1.2fr;
    align-items: start;
  }
}

.iletisim__baslik {
  font-family: 'Playfair Display', serif;
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 8px;
}

.iletisim__altyazi {
  font-size: 0.95rem;
  font-weight: 300;
  color: var(--mid);
  margin-bottom: 24px;
}

.iletisim__liste {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 32px;
}

.iletisim__liste li {
  font-size: 0.95rem;
  color: var(--dark);
}

.iletisim__liste li a {
  color: var(--dark);
  transition: color .2s;
}

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

.iletisim__cta {
  background: var(--accent);
  border-radius: var(--radius);
  padding: 24px;
  color: var(--white);
  text-align: center;
}

.iletisim__cta-label {
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0.85;
  margin-bottom: 6px;
}

.iletisim__cta-tel {
  font-family: 'Playfair Display', serif;
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 16px;
}

/* Form */
.contact-form {
  background: var(--white);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-bottom: 16px;
}

@media (min-width: 480px) {
  .form-row {
    grid-template-columns: 1fr 1fr;
  }
}

.form-group {
  display: flex;
  flex-direction: column;
  margin-bottom: 16px;
}

.form-group label {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--dark);
  margin-bottom: 6px;
  letter-spacing: 0.02em;
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 11px 14px;
  border: 1.5px solid var(--light);
  border-radius: var(--radius);
  font-family: 'Inter', sans-serif;
  font-size: 0.9rem;
  color: var(--dark);
  background: var(--white);
  transition: border-color .2s;
  outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.form-group.error input,
.form-group.error select,
.form-group.error textarea {
  border-color: #e53e3e;
}

.form-error {
  display: none;
  font-size: 0.78rem;
  color: #e53e3e;
  margin-top: 4px;
}

.form-group.error .form-error {
  display: block;
}

/* ─── FOOTER ─── */
.footer {
  background: var(--dark);
  padding: 64px 0 0;
  color: rgba(255,255,255,0.70);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  margin-bottom: 48px;
}

@media (min-width: 640px) {
  .footer__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .footer__grid {
    grid-template-columns: 1.4fr 1fr 1fr;
  }
}

.footer__tagline {
  font-size: 0.85rem;
  font-weight: 300;
  color: rgba(255,255,255,0.50);
  margin: 12px 0 20px;
  line-height: 1.5;
}

.footer__sosyal-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,0.70);
  font-size: 0.85rem;
  transition: color .2s;
}

.footer__sosyal-link:hover {
  color: var(--accent2);
}

.footer__heading {
  font-family: 'Inter', sans-serif;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent2);
  margin-bottom: 16px;
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer__links a {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.65);
  transition: color .2s;
}

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

.footer__iletisim {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 20px;
}

.footer__iletisim li {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.65);
}

.footer__iletisim li a {
  color: rgba(255,255,255,0.65);
  transition: color .2s;
}

.footer__iletisim li a:hover {
  color: var(--white);
}

.footer__whatsapp {
  font-size: 0.85rem;
  padding: 10px 20px;
}

.footer__bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 20px 0;
  text-align: center;
}

.footer__bottom p {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.35);
}

/* ─── WHATSAPP FAB ─── */
.whatsapp-fab {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 800;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #25D366;
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(37,211,102,0.40);
  transition: transform .2s, box-shadow .2s;
}

.whatsapp-fab:hover {
  transform: translateY(-2px) scale(1.05);
  box-shadow: 0 6px 24px rgba(37,211,102,0.55);
}

/* ─── REVEAL ANIMATION ─── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .6s ease, transform .6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}