/* ==========================================================================
   Haydar Mühendislik - Tanıtım Sitesi Stilleri
   Tema: Koyu lacivert zemin + altın/bronz vurgu (profesyonel kurumsal tema)
   ========================================================================== */

/* ---------- Değişkenler (Renk Paleti) ---------- */
:root {
  /* Ana vurgu rengi: sıcak altın/bronz tonu (eski yeşilin yerine) */
  --color-primary: #C9A468;
  --color-primary-light: #E0C08A;
  --color-secondary: #4FA3C7;     /* etkileşim/hover için parlak mavi */
  --color-accent: #C9A468;
  --color-accent-light: #E4CE9C;

  --color-navy: #16233D;          /* header/footer laciverti */
  --color-navy-light: #22345A;

  --color-cream: #F7F5EF;         /* logo rozetleri için sabit açık ton */

  --color-bg: #101A2C;            /* koyu lacivert sayfa zemini */
  --color-surface: #1C2C4A;       /* bölüm panelleri (orta lacivert) */
  --color-surface-alt: #24365C;   /* ikinci derece panel tonu */
  --color-text: #ECEFF4;          /* açık gri-beyaz metin */
  --color-text-muted: #9DA8BE;
  --color-border: #2B3B5C;

  /* Hero için "havadan arazi" duotone tonları (soğuk gri-mavi -> sıcak bronz) */
  --hero-cool-dark: #223138;
  --hero-cool-light: #4F6E78;
  --hero-warm-light: #B98A52;
  --hero-warm-dark: #6E4A26;

  --shadow-soft: 0 10px 30px rgba(3, 8, 18, 0.45);
  --shadow-medium: 0 14px 40px rgba(3, 8, 18, 0.55);

  --radius-md: 12px;
  --radius-lg: 20px;

  --container-width: 1140px;
  --transition: 0.25s ease;
}

/* ---------- Reset ---------- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: auto;
  height: 100%;
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* İçerik kısa olsa bile footer'ı büyük ekranlarda ekranın altına sabitler */
main {
  flex: 1 0 auto;
  display: flex;
  flex-direction: column;
}

/* Sayfadaki tek bölüm (hero, hizmetler, hakkımızda vb.) mevcut alanı doldurur
   böylece arka plan (fotoğraf/renk) footer'a kadar uzar */
main > section {
  flex: 1 0 auto;
}

.site-footer {
  flex-shrink: 0;
}

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

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

ul {
  list-style: none;
}

h1, h2, h3, h4 {
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 700;
  line-height: 1.25;
  color: var(--color-primary);
}

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Butonlar ---------- */
.btn {
  display: inline-block;
  padding: 14px 28px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform var(--transition), box-shadow var(--transition), background-color var(--transition), color var(--transition);
  border: 2px solid transparent;
  cursor: pointer;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-navy);
  box-shadow: var(--shadow-soft);
}

.btn-primary:hover {
  background-color: var(--color-primary-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
}

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

.btn-outline:hover {
  background-color: var(--color-primary);
  color: var(--color-navy);
  transform: translateY(-2px);
}

/* ==========================================================================
   HEADER
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-navy);
  border-bottom: 1px solid var(--color-navy-light);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 10px;
  padding-bottom: 10px;
}

.logo {
  display: flex;
  align-items: center;
  color: var(--color-primary);
  background-color: var(--color-cream);
  padding: 6px 16px;
  border-radius: 12px;
}

.logo-image {
  height: 48px;
  width: auto;
  display: block;
}

.main-nav ul {
  display: flex;
  gap: 32px;
}

.main-nav a {
  font-weight: 600;
  font-size: 0.95rem;
  color: #EDEFF3;
  position: relative;
  padding-bottom: 4px;
  transition: color var(--transition);
}

.main-nav a:hover {
  color: var(--color-accent-light);
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-accent);
  transition: width var(--transition);
}

.main-nav a:hover::after {
  width: 100%;
}

/* Aktif sayfanın menü linki */
.main-nav a.active {
  color: var(--color-accent-light);
}

.main-nav a.active::after {
  width: 100%;
}

/* Mobil menü butonu */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: #EDEFF3;
  transition: transform var(--transition), opacity var(--transition);
}

/* ==========================================================================
   HERO
   ========================================================================== */
.hero {
  position: relative;
  overflow: hidden;
  padding: 140px 0 120px;
  background-color: var(--hero-cool-dark); /* görsel yüklenene kadar yedek renk */
}

/* Havadan arazi fotoğrafı - yavaşça yakınlaşan/kayan katman */
.hero-photo {
  position: absolute;
  inset: -20px;
  z-index: 0;
  background-image: url('hero-bg.jpg');
  background-size: cover;
  background-position: center 55%;
  animation: heroZoom 26s ease-in-out infinite alternate;
  will-change: transform;
}

@keyframes heroZoom {
  0%   { transform: scale(1) translate(0, 0); }
  100% { transform: scale(1.12) translate(-1%, -1%); }
}

/* Marka renkleriyle bütünleştiren ve okunurluğu sağlayan duotone karartma */
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(125deg,
    rgba(34, 49, 56, 0.78) 0%,
    rgba(34, 49, 56, 0.5) 35%,
    rgba(110, 74, 38, 0.4) 70%,
    rgba(110, 74, 38, 0.68) 100%);
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 2;
  opacity: 0.6;
}

.hero-bg svg {
  width: 100%;
  height: 100%;
}

.contour {
  fill: none;
  stroke-width: 1.6;
  stroke: #F7F5EF;
}

.c1 { opacity: 0.45; }
.c2 { opacity: 0.28; }
.c3 { opacity: 0.36; }
.c4 { opacity: 0.2; }
.c5 { opacity: 0.25; }
.c6 { opacity: 0.16; }

/* Kontur çizgilerine yavaş, akışkan bir "nehir" animasyonu */
.contour {
  animation: floatLines 16s ease-in-out infinite;
}
.c2 { animation-delay: -3s; }
.c3 { animation-delay: -6s; }
.c4 { animation-delay: -9s; }
.c5 { animation-delay: -12s; }
.c6 { animation-delay: -15s; }

@keyframes floatLines {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(-12px, -10px); }
}

.hero-inner {
  position: relative;
  z-index: 3;
  max-width: 720px;
}

.hero-eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-accent-light);
  margin-bottom: 16px;
}

.hero h1 {
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  margin-bottom: 20px;
  color: #FBFAF6;
}

.hero-subtitle {
  font-size: 1.05rem;
  color: rgba(247, 245, 239, 0.88);
  margin-bottom: 32px;
  max-width: 600px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

/* ==========================================================================
   ORTAK BÖLÜM STİLLERİ
   ========================================================================== */
.section {
  padding: 90px 0;
}

/* Hero'suz sayfalarda ilk bölümün header altında rahat durması için */
.page-top {
  padding-top: 140px;
}

.section-heading {
  max-width: 640px;
  margin: 0 auto 56px;
  text-align: center;
}

.section-eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 12px;
}

.section-heading h2 {
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  margin-bottom: 14px;
}

.section-desc {
  color: var(--color-text-muted);
}

/* ==========================================================================
   HİZMETLER
   ========================================================================== */
.services {
  background-color: var(--color-surface);
}

/* Asimetrik "bento" grid: 3 sütun, kartlar farklı boyut/konumlarda */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-auto-rows: minmax(190px, auto);
  gap: 24px;
}

/* Masaüstünde her kartın grid içindeki konumu (1. Harita, 4. Maden Planlama öne çıkan) */
.cards-grid .card:nth-child(1) { grid-column: 1 / 3; grid-row: 1; }
.cards-grid .card:nth-child(2) { grid-column: 1 / 2; grid-row: 2; }
.cards-grid .card:nth-child(3) { grid-column: 2 / 3; grid-row: 2; }
.cards-grid .card:nth-child(4) { grid-column: 3 / 4; grid-row: 1 / 3; }
.cards-grid .card:nth-child(5) { grid-column: 1 / 2; grid-row: 3; }
.cards-grid .card:nth-child(6) { grid-column: 2 / 4; grid-row: 3; }

.card {
  position: relative;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-medium);
  border-color: var(--color-secondary);
}

.card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 68px;
  height: 68px;
  border-radius: 50%;
  background-color: var(--color-primary);
  color: var(--color-navy);
  margin-bottom: 24px;
  flex-shrink: 0;
  transition: transform var(--transition);
}

.card:hover .card-icon {
  transform: scale(1.08) rotate(-4deg);
}

.card-icon svg {
  width: 34px;
  height: 34px;
}

.card h3 {
  font-size: 1.25rem;
  margin-bottom: 12px;
}

.card p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* Öne çıkan kart (Maden Planlama ve 3B Modelleme): diğer koyu kartların arasında altın zemin ile öne çıkar */
.card-featured {
  background: linear-gradient(150deg, var(--hero-warm-light) 0%, var(--color-primary) 50%, var(--color-accent-light) 130%);
  border-color: transparent;
}

.card-featured::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 85% 15%, rgba(255, 255, 255, 0.25), transparent 55%);
  pointer-events: none;
}

.card-featured .card-icon {
  background-color: rgba(22, 35, 61, 0.16);
  color: var(--color-navy);
}

.card-featured h3 {
  color: var(--color-navy);
}

.card-featured p {
  color: rgba(22, 35, 61, 0.75);
}

.card-featured:hover {
  border-color: transparent;
}

/* ==========================================================================
   HAKKIMIZDA
   ========================================================================== */
.about-inner {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 60px;
  align-items: center;
}

.about-text p {
  color: var(--color-text-muted);
  margin-bottom: 18px;
}

.about-stats {
  display: flex;
  gap: 36px;
  margin-top: 28px;
}

.about-stats li {
  display: flex;
  flex-direction: column;
}

.about-stats strong {
  font-family: Georgia, serif;
  font-size: 1.8rem;
  color: var(--color-primary);
}

.about-stats span {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.about-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  background-color: var(--color-cream);
  padding: 15%;
}

.about-logo {
  width: 100%;
  height: auto;
}

/* Vizyon / Misyon */
.vm-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 64px;
}

.vm-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.vm-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-medium);
  border-color: var(--color-secondary);
}

.vm-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background-color: var(--color-primary);
  color: var(--color-navy);
  margin-bottom: 20px;
}

.vm-card h3 {
  font-size: 1.2rem;
  margin-bottom: 12px;
}

.vm-card p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* ==========================================================================
   İLETİŞİM
   ========================================================================== */
.contact {
  background-color: var(--color-surface);
}

.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 48px;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.contact-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.contact-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background-color: var(--color-accent-light);
  color: var(--color-navy);
  flex-shrink: 0;
}

.contact-item h4 {
  font-size: 1rem;
  margin-bottom: 4px;
}

.contact-item p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* Form */
.contact-form {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.form-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-row label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text);
}

.form-row input,
.form-row textarea {
  font-family: inherit;
  font-size: 0.95rem;
  padding: 12px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-surface);
  color: var(--color-text);
  resize: vertical;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-row input:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--color-secondary);
  box-shadow: 0 0 0 3px rgba(79, 163, 199, 0.25);
}

.form-row input::placeholder,
.form-row textarea::placeholder {
  color: var(--color-text-muted);
}

.form-submit {
  align-self: flex-start;
  border: none;
}

.form-submit:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

.form-status {
  font-size: 0.9rem;
  font-weight: 600;
  min-height: 1.2em;
}

.form-status-success {
  color: #7FCBA4;
}

.form-status-error {
  color: #E38181;
}

/* ==========================================================================
   404 SAYFASI
   ========================================================================== */
.not-found-inner {
  max-width: 640px;
  text-align: center;
  margin: 0 auto;
}

.not-found-title {
  font-size: clamp(2.2rem, 6vw, 4rem);
  margin: 12px 0 20px;
}

.not-found-desc {
  color: var(--color-text-muted);
  margin-bottom: 32px;
}

.not-found-actions {
  justify-content: center;
}

/* Konum haritası */
.contact-map {
  grid-column: 1 / -1;
  margin-top: 8px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-soft);
}

.contact-map iframe {
  width: 100%;
  height: 380px;
  display: block;
  border: 0;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer {
  background-color: var(--color-navy);
  color: #EAF1EC;
  padding: 28px 0;
  border-top: 1px solid var(--color-navy-light);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-inner p {
  font-size: 0.85rem;
  opacity: 0.85;
}

.social-links {
  display: flex;
  gap: 14px;
}

.social-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.1);
  color: #EAF1EC;
  transition: background-color var(--transition), transform var(--transition);
}

.social-icon:hover {
  background-color: var(--color-accent);
  color: var(--color-navy);
  transform: translateY(-2px);
}

/* ==========================================================================
   RESPONSIVE - TABLET
   ========================================================================== */
@media (max-width: 900px) {
  .cards-grid {
    grid-template-columns: 1fr 1fr;
    grid-auto-rows: auto;
  }

  /* Bento düzeni dar ekranda basit 2 sütuna döner */
  .cards-grid .card:nth-child(1),
  .cards-grid .card:nth-child(2),
  .cards-grid .card:nth-child(3),
  .cards-grid .card:nth-child(4),
  .cards-grid .card:nth-child(5),
  .cards-grid .card:nth-child(6) {
    grid-column: auto;
    grid-row: auto;
  }

  .cards-grid .card:nth-child(1),
  .cards-grid .card:nth-child(4) {
    grid-column: 1 / 3;
  }

  .about-inner {
    grid-template-columns: 1fr;
  }

  .about-visual {
    order: -1;
    max-width: 320px;
    margin: 0 auto;
  }

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

/* ==========================================================================
   RESPONSIVE - MOBİL
   ========================================================================== */
@media (max-width: 640px) {
  .nav-toggle {
    display: flex;
  }

  .logo-image {
    height: 40px;
  }

  .main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition);
  }

  .main-nav.open {
    max-height: 300px;
  }

  .main-nav ul {
    flex-direction: column;
    gap: 0;
    padding: 8px 24px 20px;
  }

  .main-nav ul li {
    border-top: 1px solid var(--color-border);
  }

  .main-nav ul li a {
    display: block;
    padding: 14px 0;
    color: var(--color-text);
  }

  .main-nav ul li a:hover {
    color: var(--color-primary);
  }

  .hero {
    padding: 90px 0 70px;
    text-align: center;
  }

  .page-top {
    padding-top: 100px;
  }

  .hero-inner {
    margin: 0 auto;
  }

  .hero-actions {
    justify-content: center;
  }

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

  .cards-grid .card:nth-child(1),
  .cards-grid .card:nth-child(4) {
    grid-column: auto;
  }

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

  .about-stats {
    flex-wrap: wrap;
    gap: 24px;
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
}