/* ============================================================
   MAIN.CSS — Premium Global Design System
   Turkish Industrial Machinery Website
   ============================================================ */

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

/* ── Design Tokens — Havai Mavisi (Fresh Sky Blue) ────────── */
:root {
  /* Brand Colors (Havai Mavisi & Ferah Çelik) */
  --color-primary:        #0284C7;   /* Canlı Havai Mavisi */
  --color-primary-dark:   #0B2545;   /* Derin Çelik Havai Lacivert */
  --color-primary-light:  #38BDF8;   /* Parlak Açık Havai Mavi */
  --color-primary-faint:  #F0F9FF;   /* Ferah Buz Mavisi */

  /* Accent (Electric Sky Blue) */
  --color-accent:         #0EA5E9;   /* Elektrik Havai Mavisi */
  --color-accent-hover:   #0284C7;
  --color-accent-faint:   #E0F2FE;
  --color-accent-light:   #7DD3FC;

  /* Surfaces (Temiz & Ferah) */
  --color-surface:        #F8FAFC;
  --color-white:          #FFFFFF;
  --color-surface-warm:   #F0F9FF;

  /* Grays (Temiz Havai Nötr Gri Paleti) */
  --color-gray-100:       #F1F5F9;
  --color-gray-200:       #E2E8F0;
  --color-gray-300:       #CBD5E1;
  --color-gray-400:       #94A3B8;
  --color-gray-500:       #64748B;
  --color-gray-600:       #475569;
  --color-gray-700:       #334155;
  --color-gray-800:       #1E293B;
  --color-gray-900:       #0F172A;

  /* Status */
  --color-success:        #059669;
  --color-success-bg:     #ECFDF5;
  --color-warning:        #D97706;
  --color-warning-bg:     #FFFBEB;
  --color-whatsapp:       #25D366;
  --color-whatsapp-hover: #1DAE55;

  /* Typography */
  --font-family:          'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-xs:         0.75rem;    /* 12px */
  --font-size-sm:         0.875rem;   /* 14px */
  --font-size-base:       1rem;       /* 16px */
  --font-size-md:         1.125rem;   /* 18px */
  --font-size-lg:         1.375rem;   /* 22px */
  --font-size-xl:         1.75rem;    /* 28px */
  --font-size-2xl:        2.5rem;     /* 40px */
  --font-size-3xl:        3.25rem;    /* 52px */
  --font-size-4xl:        4rem;       /* 64px */

  /* Spacing (Daha Nefesli) */
  --space-1:   0.25rem;
  --space-2:   0.5rem;
  --space-3:   0.75rem;
  --space-4:   1rem;
  --space-5:   1.25rem;
  --space-6:   1.5rem;
  --space-8:   2rem;
  --space-10:  2.5rem;
  --space-12:  3rem;
  --space-16:  4rem;
  --space-20:  6rem;
  --space-24:  8rem;

  /* Layout */
  --max-width:      1200px;
  --sidebar-width:  260px;
  --header-height:  72px;

  /* Border */
  --radius-sm:  4px;
  --radius:     8px;
  --radius-md:  12px;
  --radius-lg:  16px;
  --radius-xl:  24px;

  /* Shadows (Çelik Derinliği) */
  --shadow-xs:  0 1px 3px rgba(11,29,53,0.07);
  --shadow-sm:  0 2px 8px rgba(11,29,53,0.09);
  --shadow:     0 4px 16px rgba(11,29,53,0.11);
  --shadow-md:  0 8px 28px rgba(11,29,53,0.14);
  --shadow-lg:  0 16px 48px rgba(11,29,53,0.18);
  --shadow-xl:  0 24px 64px rgba(11,29,53,0.22);
  --shadow-glow-accent: 0 0 24px rgba(37,99,235,0.35);
  --shadow-glow-primary: 0 0 24px rgba(37,99,235,0.3);

  /* Transitions */
  --transition:       0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow:  0.4s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  color: var(--color-gray-600);
  background-color: var(--color-surface);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

:where(a, button, input, select, textarea, [role="button"]):focus-visible {
  outline: 3px solid var(--color-primary-light);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

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

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

ul, ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

/* ── Layout ─────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-6);
  padding-right: var(--space-6);
}

.section {
  padding: var(--space-20) 0;
  position: relative;
}

.section--alt {
  background-color: var(--color-gray-100);
}

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

/* ── Typography ─────────────────────────────────────────── */
h1, h2, h3, h4, h5, h6 {
  color: var(--color-gray-800);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 { font-size: var(--font-size-3xl); font-weight: 900; }
h2 { font-size: var(--font-size-2xl); font-weight: 800; }
h3 { font-size: var(--font-size-xl);  font-weight: 700; }
h4 { font-size: var(--font-size-lg); }
h5 { font-size: var(--font-size-md); }
h6 { font-size: var(--font-size-base); }

p {
  color: var(--color-gray-500);
  line-height: 1.8;
}

/* Gradient Text Effect */
.text-gradient {
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-gradient-hero {
  background: linear-gradient(135deg, #FFFFFF 0%, #93C5FD 60%, #60A5FA 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-title {
  font-size: var(--font-size-2xl);
  color: var(--color-gray-800);
  font-weight: 800;
  margin-bottom: var(--space-4);
  letter-spacing: -0.03em;
  position: relative;
}

.section-subtitle {
  font-size: var(--font-size-md);
  color: var(--color-gray-500);
  max-width: 600px;
  line-height: 1.7;
}

/* Section eyebrow (üst küçük etiket) */
.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-4);
}

.section-eyebrow::before {
  content: '';
  display: block;
  width: 32px;
  height: 2px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-light));
  border-radius: 2px;
  box-shadow: 0 0 8px rgba(37,99,235,0.5);
}

.section-header {
  margin-bottom: var(--space-12);
}

.section-header--center {
  text-align: center;
}

.section-header--center .section-subtitle {
  margin: 0 auto;
}

.section-header--center .section-eyebrow {
  justify-content: center;
}

.section-header--center .section-eyebrow::before {
  display: none;
}

/* ── Buttons (Premium Tasarım) ───────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.75rem 1.75rem;
  font-size: var(--font-size-sm);
  font-weight: 600;
  line-height: 1;
  border-radius: var(--radius);
  border: 2px solid transparent;
  transition: all var(--transition);
  cursor: pointer;
  white-space: nowrap;
  text-decoration: none;
  letter-spacing: 0.02em;
  position: relative;
  overflow: hidden;
}

.btn:active {
  transform: translateY(1px) scale(0.98);
}

/* Ripple efekti */
.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at var(--ripple-x, 50%) var(--ripple-y, 50%), rgba(255,255,255,0.3) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.4s ease;
}

.btn:active::after {
  opacity: 1;
}

.btn-primary {
  background: linear-gradient(135deg, #0EA5E9, #0284C7);
  color: var(--color-white);
  border-color: transparent;
  box-shadow: 0 4px 16px rgba(14, 165, 233, 0.35);
}

.btn-primary:hover {
  box-shadow: 0 8px 28px rgba(14, 165, 233, 0.5);
  transform: translateY(-2px);
  background: linear-gradient(135deg, #38BDF8, #0EA5E9);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-white);
  border-color: rgba(255,255,255,0.35);
  backdrop-filter: blur(4px);
}

.btn-secondary:hover {
  background-color: rgba(255,255,255,0.1);
  border-color: var(--color-white);
  transform: translateY(-2px);
}

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

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

.btn-ghost {
  background-color: transparent;
  color: var(--color-gray-600);
  border-color: var(--color-gray-300);
}

.btn-ghost:hover {
  background-color: var(--color-gray-100);
  border-color: var(--color-gray-400);
  color: var(--color-gray-700);
}

.btn-whatsapp {
  background: linear-gradient(135deg, #25D366, #128C7E);
  color: var(--color-white);
  border-color: transparent;
  box-shadow: 0 4px 12px rgba(37,211,102,0.3);
}

.btn-whatsapp:hover {
  box-shadow: 0 8px 24px rgba(37,211,102,0.4);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: var(--font-size-xs);
  border-radius: var(--radius-sm);
}

.btn-lg {
  padding: 1rem 2.25rem;
  font-size: var(--font-size-base);
  border-radius: var(--radius-md);
}

.btn-full {
  width: 100%;
}

/* ── Badges (Premium) ───────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.3rem 0.75rem;
  font-size: var(--font-size-xs);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-radius: var(--radius);
}

.badge-new {
  background: linear-gradient(135deg, #EFF6FF, #DBEAFE);
  color: var(--color-primary-light);
  border: 1px solid rgba(59,130,246,0.2);
}

.badge-used {
  background: linear-gradient(135deg, #FFFBEB, #FEF3C7);
  color: var(--color-warning);
  border: 1px solid rgba(217,119,6,0.2);
}

.badge-featured {
  background: linear-gradient(135deg, var(--color-accent-faint), #FDE68A);
  color: var(--color-accent-hover);
  border: 1px solid rgba(212,160,23,0.2);
}

/* ── Form Elements ──────────────────────────────────────── */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-label {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-gray-700);
}

.form-label .required {
  color: var(--color-accent);
  margin-left: 2px;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: var(--font-size-sm);
  color: var(--color-gray-700);
  background-color: var(--color-white);
  border: 1.5px solid var(--color-gray-200);
  border-radius: var(--radius);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 4px rgba(37,99,235,0.12);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-gray-400);
}

.form-textarea {
  resize: vertical;
  min-height: 100px;
  line-height: 1.6;
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%234A5568' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  padding-right: 2.5rem;
  cursor: pointer;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

/* ── Divider ─────────────────────────────────────────────── */
.divider {
  border: none;
  border-top: 1px solid var(--color-gray-200);
  margin: var(--space-6) 0;
}

/* ── Breadcrumb ─────────────────────────────────────────── */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
  margin-bottom: var(--space-6);
}

.breadcrumb a {
  color: var(--color-accent);
  transition: color var(--transition);
}

.breadcrumb a:hover {
  color: var(--color-accent-hover);
  text-decoration: underline;
}

.breadcrumb-sep {
  color: var(--color-gray-400);
}

/* ── Alert / Notice ──────────────────────────────────────── */
.alert {
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius);
  font-size: var(--font-size-sm);
  border-left: 4px solid;
}

.alert-info {
  background-color: var(--color-primary-faint);
  border-color: var(--color-primary-light);
  color: var(--color-primary);
}

.alert-success {
  background-color: var(--color-success-bg);
  border-color: var(--color-success);
  color: var(--color-success);
}

.alert-warning {
  background-color: var(--color-warning-bg);
  border-color: var(--color-warning);
  color: var(--color-warning);
}

/* ── Scroll Reveal Animations ─────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-left.revealed {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-right.revealed {
  opacity: 1;
  transform: translateX(0);
}

.reveal-scale {
  opacity: 0;
  transform: scale(0.9);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-scale.revealed {
  opacity: 1;
  transform: scale(1);
}

/* Staggered animation delay for grid children */
.reveal-stagger > *:nth-child(1) { transition-delay: 0ms; }
.reveal-stagger > *:nth-child(2) { transition-delay: 80ms; }
.reveal-stagger > *:nth-child(3) { transition-delay: 160ms; }
.reveal-stagger > *:nth-child(4) { transition-delay: 240ms; }
.reveal-stagger > *:nth-child(5) { transition-delay: 320ms; }
.reveal-stagger > *:nth-child(6) { transition-delay: 400ms; }

/* ── Glassmorphism Helper ─────────────────────────────────── */
.glass {
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.glass-dark {
  background: rgba(10, 22, 40, 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}


/* ── Floating WhatsApp Button ─────────────────────────────── */
.floating-whatsapp {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, #25D366, #128C7E);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 20px rgba(37,211,102,0.4);
  z-index: 1000;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition);
  animation: whatsapp-pulse 2s infinite;
}

.floating-whatsapp:hover {
  transform: scale(1.1);
  box-shadow: 0 8px 30px rgba(37,211,102,0.5);
}

.floating-whatsapp svg {
  width: 28px;
  height: 28px;
  fill: white;
}

@keyframes whatsapp-pulse {
  0%   { box-shadow: 0 6px 20px rgba(37,211,102,0.4); }
  50%  { box-shadow: 0 6px 20px rgba(37,211,102,0.4), 0 0 0 12px rgba(37,211,102,0.1); }
  100% { box-shadow: 0 6px 20px rgba(37,211,102,0.4), 0 0 0 24px rgba(37,211,102,0); }
}

/* ── Utility ─────────────────────────────────────────────── */
.text-center { text-align: center; }
.text-right  { text-align: right; }
.text-sm     { font-size: var(--font-size-sm); }
.text-xs     { font-size: var(--font-size-xs); }
.text-muted  { color: var(--color-gray-500); }
.text-primary { color: var(--color-primary); }
.text-accent  { color: var(--color-accent); }
.text-white   { color: var(--color-white); }

.fw-600 { font-weight: 600; }
.fw-700 { font-weight: 700; }

.mt-2  { margin-top: var(--space-2); }
.mt-4  { margin-top: var(--space-4); }
.mt-6  { margin-top: var(--space-6); }
.mt-8  { margin-top: var(--space-8); }
.mb-2  { margin-bottom: var(--space-2); }
.mb-4  { margin-bottom: var(--space-4); }
.mb-6  { margin-bottom: var(--space-6); }

.flex   { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2  { gap: var(--space-2); }
.gap-4  { gap: var(--space-4); }
.gap-6  { gap: var(--space-6); }

.hidden { display: none !important; }

/* ── Counter Animation ────────────────────────────────────── */
@keyframes count-up {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Shimmer Loading ──────────────────────────────────────── */
@keyframes shimmer {
  0%   { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

.skeleton {
  background: linear-gradient(90deg, #F1F5F9 25%, #E2E8F0 50%, #F1F5F9 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius);
}

/* ── Responsive ─────────────────────────────────────────── */
@media (max-width: 768px) {
  :root {
    --font-size-4xl: 2.5rem;
    --font-size-3xl: 2rem;
    --font-size-2xl: 1.75rem;
    --font-size-xl:  1.375rem;
    --space-20: 4rem;
    --space-16: 3rem;
    --space-24: 5rem;
  }

  .container {
    padding-left: var(--space-5);
    padding-right: var(--space-5);
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .section-header--center {
    text-align: left;
  }

  .section-header--center .section-eyebrow {
    justify-content: flex-start;
  }

  .floating-whatsapp {
    width: 52px;
    height: 52px;
    bottom: 16px;
    right: 16px;
  }

  .floating-whatsapp svg {
    width: 24px;
    height: 24px;
  }
}

@media (max-width: 480px) {
  :root {
    --font-size-3xl: 1.75rem;
    --font-size-2xl: 1.5rem;
  }
}