/* 
======================================================================
  TOROS GRUP İNŞAAT SANAYİ VE TİCARET LİMİTED ŞİRKETİ
  Prestijli Kurumsal Mimari Web Stilleri (Mesa & Kiler GYO Referanslı)
  Yazı Tipleri: Urbanist (Başlık), Montserrat (Alt Başlık), Inter (Gövde Metni)
======================================================================
*/

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Montserrat:wght@400;500;600;700;800;900&family=Urbanist:wght@400;500;600;700;800;900&display=swap');

:root {
  --bg-main: #F8F9FB;
  --bg-surface: #FFFFFF;
  --bg-card: #FFFFFF;
  --bg-muted: #F1F4F9;
  --bg-dark: #0B0E14;
  --bg-dark-surface: #131822;

  --text-dark-900: #0A0E17;
  --text-dark-800: #0F172A;
  --text-dark-700: #1E293B;
  --text-muted: #64748B;
  --text-light: #F8FAFC;

  --gold-light: #F6ECE0;
  --gold-base: #C5A880;
  --gold-bright: #D4AF37;
  --gold-dark: #9E7D50;
  --gold-glow: rgba(197, 168, 128, 0.25);

  --font-heading: 'Urbanist', 'Montserrat', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-subheading: 'Montserrat', sans-serif;
  --font-body: 'Inter', 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  
  --shadow-subtle: 0 4px 20px -2px rgba(0, 0, 0, 0.05);
  --shadow-medium: 0 10px 30px -5px rgba(0, 0, 0, 0.08);
  --shadow-elevated: 0 20px 45px -10px rgba(0, 0, 0, 0.12), 0 0 20px -5px rgba(197, 168, 128, 0.15);
  
  --transition-smooth: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-luxury: all 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}

/* Reset & Genel Tipografi */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-family: var(--font-body);
  background-color: var(--bg-main);
  color: var(--text-dark-700);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  word-wrap: break-word;
  overflow-wrap: break-word;
  letter-spacing: -0.01em;
  max-width: 100%;
  overflow-x: hidden;
}

body {
  overflow-x: hidden;
  max-width: 100%;
  line-height: 1.7;
  width: 100%;
  background-color: var(--bg-main);
  font-family: var(--font-body);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  letter-spacing: -0.015em;
  color: var(--text-dark-900);
  word-break: break-word;
  overflow-wrap: break-word;
  font-weight: 800;
  line-height: 1.32;
  padding-bottom: 0.08em;
  text-rendering: optimizeLegibility;
}

.font-heading {
  font-family: var(--font-heading);
}

.font-subheading {
  font-family: var(--font-subheading);
}

/* Özel Kaydırma Çubuğu */
::-webkit-scrollbar {
  width: 9px;
}
::-webkit-scrollbar-track {
  background: #F1F4F9;
}
::-webkit-scrollbar-thumb {
  background: #CBD5E1;
  border-radius: 4px;
  border: 2px solid #F1F4F9;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--gold-base);
}

/* Mesa & Kiler Tarzı Mimari Çizgili Arka Planlar */
.mesa-light-grid {
  background-image: 
    linear-gradient(to right, rgba(15, 23, 42, 0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(15, 23, 42, 0.04) 1px, transparent 1px);
  background-size: 60px 60px;
}

.mesa-dot-light {
  background-image: radial-gradient(rgba(197, 168, 128, 0.25) 1.5px, transparent 1.5px);
  background-size: 30px 30px;
}

/* Altın Gradient & Tipografi (G, Ğ ve harf altlarının kesilmesini önleyen özel kutu modeli) */
.gold-gradient-text {
  background: linear-gradient(135deg, #B8860B 0%, #D4AF37 45%, #C5A880 75%, #8B6914 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: inline-block;
  font-family: var(--font-heading);
  padding-top: 0.06em;
  padding-bottom: 0.2em;
  margin-bottom: -0.2em;
  padding-left: 0.02em;
  padding-right: 0.06em;
  vertical-align: baseline;
  line-height: inherit;
}

.gold-gradient-bg {
  background: linear-gradient(135deg, #E2CEB5 0%, #C5A880 50%, #A0825A 100%);
}

/* Prestij Kartları */
.mesa-white-card {
  background: #FFFFFF;
  border: 1px solid rgba(226, 232, 240, 0.9);
  border-radius: 12px;
  box-shadow: var(--shadow-subtle);
  transition: var(--transition-smooth);
}
.mesa-white-card:hover {
  border-color: rgba(197, 168, 128, 0.6);
  transform: translateY(-5px);
  box-shadow: var(--shadow-elevated);
}

/* Sarı/Altın Çerçeveli Kurumsal Kart (Hakkımızda / Vizyon / Misyon) */
.mesa-gold-framed-card {
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-left: 5px solid #D4AF37;
  border-radius: 12px;
  box-shadow: var(--shadow-medium);
  transition: var(--transition-smooth);
}
.mesa-gold-framed-card:hover {
  box-shadow: var(--shadow-elevated);
  border-color: #CBD5E1;
  border-left-color: #B8860B;
}

/* Header & Sticky Nav */
.mesa-header-nav {
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  background: #FFFFFF;
}
.mesa-header-nav.scrolled {
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(197, 168, 128, 0.35);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
  padding-top: 0.65rem;
  padding-bottom: 0.65rem;
}

/* Navigasyon Linkleri */
.mesa-nav-link {
  position: relative;
  font-family: var(--font-subheading);
  font-size: 0.875rem;
  font-weight: 600;
  color: #334155;
  letter-spacing: 0.01em;
  transition: color 0.25s ease;
  white-space: nowrap;
  padding: 0.5rem 0;
}
.mesa-nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2.5px;
  background: linear-gradient(90deg, #D4AF37, #C5A880);
  transition: width 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}
.mesa-nav-link:hover,
.mesa-nav-link.active {
  color: #0F172A;
}
.mesa-nav-link:hover::after,
.mesa-nav-link.active::after {
  width: 100%;
}

/* Buton Tasarımları */
.btn-mesa-gold {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: linear-gradient(135deg, #DFCAAD 0%, #C5A880 50%, #A98758 100%);
  color: #0F172A;
  font-family: var(--font-subheading);
  font-weight: 700;
  padding: 0.75rem 1.4rem;
  font-size: 0.8125rem;
  border-radius: 6px;
  position: relative;
  overflow: hidden;
  z-index: 1;
  transition: var(--transition-smooth);
  box-shadow: 0 4px 15px -2px rgba(197, 168, 128, 0.45);
  text-align: center;
  letter-spacing: 0.01em;
}
@media (min-width: 640px) {
  .btn-mesa-gold {
    padding: 0.85rem 1.85rem;
    font-size: 0.875rem;
    gap: 0.6rem;
  }
}
.btn-mesa-gold::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
  transition: left 0.6s ease;
  z-index: -1;
}
.btn-mesa-gold:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 22px -3px rgba(197, 168, 128, 0.65);
  color: #000000;
}
.btn-mesa-gold:hover::before {
  left: 100%;
}

.btn-mesa-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: transparent;
  color: #0F172A;
  font-family: var(--font-subheading);
  font-weight: 600;
  padding: 0.75rem 1.4rem;
  font-size: 0.8125rem;
  border-radius: 6px;
  border: 1.5px solid #CBD5E1;
  transition: var(--transition-smooth);
  text-align: center;
}
@media (min-width: 640px) {
  .btn-mesa-outline {
    padding: 0.85rem 1.85rem;
    font-size: 0.875rem;
    gap: 0.6rem;
  }
}
.btn-mesa-outline:hover {
  border-color: var(--gold-base);
  background: rgba(197, 168, 128, 0.1);
  color: #0F172A;
  transform: translateY(-2px);
}

/* Kalite Standartları Kartı */
.mesa-standard-card {
  position: relative;
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 10px;
  padding: 1.35rem 1.25rem;
  box-shadow: var(--shadow-subtle);
  transition: var(--transition-smooth);
}
@media (min-width: 640px) {
  .mesa-standard-card {
    padding: 2rem 1.75rem;
  }
}
.mesa-standard-card:hover {
  background: #FFFFFF;
  border-color: var(--gold-base);
  transform: translateY(-5px);
  box-shadow: var(--shadow-elevated);
}
.mesa-standard-icon-box {
  width: 50px;
  height: 50px;
  border-radius: 8px;
  background: rgba(197, 168, 128, 0.12);
  border: 1px solid rgba(197, 168, 128, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #B8860B;
  transition: var(--transition-smooth);
}
@media (min-width: 640px) {
  .mesa-standard-icon-box {
    width: 58px;
    height: 58px;
  }
}
.mesa-standard-card:hover .mesa-standard-icon-box {
  background: linear-gradient(135deg, #D4AF37, #C5A880);
  color: #0F172A;
  transform: scale(1.06);
}

/* Kurumsal Tab Yapısı */
.mesa-tab-btn {
  font-family: var(--font-subheading);
  font-weight: 700;
  letter-spacing: 0.01em;
  padding: 0.65rem 1.15rem;
  font-size: 0.8125rem;
  border-bottom: 2px solid transparent;
  color: #64748B;
  transition: var(--transition-smooth);
  white-space: nowrap;
}
@media (min-width: 640px) {
  .mesa-tab-btn {
    padding: 0.85rem 1.75rem;
    font-size: 0.875rem;
  }
}
.mesa-tab-btn.active {
  color: #0F172A;
  border-color: #D4AF37;
  background: #FFFFFF;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}
.mesa-tab-btn:hover {
  color: #0F172A;
}

/* Modallar */
.modal-overlay-backdrop {
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}
.modal-overlay-backdrop.active {
  opacity: 1;
  visibility: visible;
}
.modal-container-box {
  transform: translateY(20px) scale(0.97);
  opacity: 0;
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.35s ease;
}
.modal-overlay-backdrop.active .modal-container-box {
  transform: translateY(0) scale(1);
  opacity: 1;
}

/* Floating Butonlar - Zarif ve Dengeli Boyutlandırma */
.floating-whatsapp {
  position: fixed;
  bottom: 1.25rem;
  right: 1.25rem;
  width: 44px;
  height: 44px;
  background: #25D366;
  color: #FFFFFF;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(37, 211, 102, 0.4);
  z-index: 90;
  transition: var(--transition-smooth);
}
@media (min-width: 640px) {
  .floating-whatsapp {
    bottom: 1.5rem;
    right: 1.5rem;
    width: 48px;
    height: 48px;
  }
}
.floating-whatsapp:hover {
  transform: scale(1.08) rotate(4deg);
  box-shadow: 0 8px 24px rgba(37, 211, 102, 0.6);
}

.floating-scroll-top {
  position: fixed;
  bottom: 4.4rem;
  right: 1.35rem;
  width: 38px;
  height: 38px;
  background: #FFFFFF;
  border: 1.5px solid #CBD5E1;
  color: #0F172A;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: var(--transition-smooth);
  box-shadow: 0 3px 12px rgba(0, 0, 0, 0.08);
  z-index: 89;
}
@media (min-width: 640px) {
  .floating-scroll-top {
    bottom: 5rem;
    right: 1.65rem;
    width: 40px;
    height: 40px;
  }
}
.floating-scroll-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.floating-scroll-top:hover {
  background: #D4AF37;
  color: #0F172A;
  border-color: #D4AF37;
  transform: translateY(-2px);
}

/* Form Girdileri */
.mesa-input-field {
  width: 100%;
  background: #F8FAFC;
  border: 1.5px solid #E2E8F0;
  border-radius: 6px;
  padding: 0.8rem 1rem;
  color: #0F172A;
  font-family: var(--font-body);
  font-size: 0.875rem;
  transition: var(--transition-smooth);
}
@media (min-width: 640px) {
  .mesa-input-field {
    padding: 0.9rem 1.15rem;
  }
}
.mesa-input-field:focus {
  outline: none;
  border-color: #D4AF37;
  background: #FFFFFF;
  box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.2);
}
.mesa-input-field::placeholder {
  color: #94A3B8;
}

/* Toast Bildirim */
.corporate-toast {
  position: fixed;
  top: 1.5rem;
  right: 1.5rem;
  max-width: 90vw;
  width: 420px;
  padding: 1.1rem 1.35rem;
  background: #0F172A;
  border-left: 4px solid #D4AF37;
  border-radius: 6px;
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.35);
  z-index: 9999;
  transform: translateX(120%);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  color: #FFFFFF;
}
.corporate-toast.show {
  transform: translateX(0);
}

/* Mobil Görünüm Kenar Boşlukları ve Taşma Önleme */
@media (max-width: 640px) {
  section {
    padding-left: 1.25rem !important;
    padding-right: 1.25rem !important;
  }
  main {
    padding-left: 1.25rem !important;
    padding-right: 1.25rem !important;
  }
  .mesa-header-nav {
    padding-left: 1.25rem !important;
    padding-right: 1.25rem !important;
  }
  footer {
    padding-left: 1.25rem !important;
    padding-right: 1.25rem !important;
  }
  .mesa-white-card,
  .mesa-gold-framed-card {
    padding: 1.25rem 1rem !important;
  }
  h1 {
    line-height: 1.28 !important;
    padding-bottom: 0.1em;
  }
  h2 {
    line-height: 1.3 !important;
    padding-bottom: 0.08em;
  }
  h3 {
    line-height: 1.32 !important;
    padding-bottom: 0.06em;
  }
}