/* ==========================================================================
   KAÇA SATMALIYIM? - MODERN E-TİCARET KÂR VE FİYAT HESAPLAYICI (SPA)
   Slogan: "Doğru fiyatla, daha kârlı sat."
   Geliştirici: Bir metindijital.com ürünüdür.
   Açık Tema (Light Mode): Ana zemin #FFFFFF, Yumuşak Griler, Yeşil (#2ECC71),
   Kırmızı (#E74C3C), Kurumsal Mavi (#3498DB).
   ========================================================================== */

/* 1. Kök Değişkenler ve Renk Paleti */
:root {
  --bg-primary: #FFFFFF;
  --bg-secondary: #F8FAFC;
  --bg-card: #FFFFFF;
  --bg-input: #F8FAFC;
  --bg-hover: #F1F5F9;

  --text-main: #0F172A;
  --text-body: #334155;
  --text-muted: #64748B;
  --text-light: #94A3B8;

  --border-color: #E2E8F0;
  --border-light: #F1F5F9;
  --border-focus: #3498DB;

  /* Temel Renkler */
  --color-green: #2ECC71;
  --color-green-dark: #27AE60;
  --color-green-bg: #EAFAF1;
  --color-green-border: #A9DFBF;

  --color-red: #E74C3C;
  --color-red-dark: #C0392B;
  --color-red-bg: #FDEDEC;
  --color-red-border: #F5B7B1;

  --color-blue: #3498DB;
  --color-blue-dark: #2980B9;
  --color-blue-bg: #EBF5FB;
  --color-blue-subtle: #F0F7FD;

  --color-purple: #8E44AD;
  --color-purple-bg: #F5EEF8;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.02);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.06), 0 2px 4px -2px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.03);
  --shadow-glow-blue: 0 0 0 3px rgba(52, 152, 219, 0.18);
  --shadow-glow-red: 0 0 0 3px rgba(231, 76, 60, 0.2);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 22px;

  --transition-speed: 0.22s;
  
  /* Modern Web Font Stack (Genel modern sitelerin kullandığı font ailesi) */
  --font-stack: 'Plus Jakarta Sans', 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

/* 2. Sıfırlama ve Temel Tipografi */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: var(--font-stack);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.55;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

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

/* 3. Sayfa Üstbilgisi (Header) */
.app-header {
  background: #FFFFFF;
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 2rem;
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: var(--shadow-sm);
}

.header-inner {
  max-width: 1240px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.25rem;
}

.brand-wrapper {
  display: flex;
  align-items: center;
  gap: 1rem;
  text-decoration: none;
}

.brand-logo-img {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  object-fit: cover;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
  transition: transform var(--transition-speed);
}

.brand-wrapper:hover .brand-logo-img {
  transform: scale(1.04);
}

.brand-title {
  font-size: 1.5rem;
  font-weight: 800;
  color: #0F172A;
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.brand-subtitle {
  font-size: 0.875rem;
  font-weight: 500;
  color: #475569;
  letter-spacing: -0.01em;
  margin-top: 2px;
}

.brand-subtitle .brand-highlight {
  color: var(--color-green-dark);
  font-weight: 700;
}

/* Header Sağ Menü & Aksiyonlar */
.header-actions {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  flex-wrap: wrap;
}

.btn-header-action {
  background: var(--bg-secondary);
  color: var(--text-body);
  border: 1px solid var(--border-color);
  padding: 0.5rem 0.9rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: all var(--transition-speed);
}

.btn-header-action:hover {
  background: #E2E8F0;
  color: #0F172A;
}

/* Reklam ve İletişim Butonları (Header) */
.btn-header-ad {
  background: #FFF7ED;
  color: #C2410C;
  border: 1px solid #FFEDD5;
  font-weight: 700;
}

.btn-header-ad:hover {
  background: #FFEDD5;
  color: #9A3412;
  border-color: #FDBA74;
}

.btn-header-contact {
  background: var(--color-blue-bg);
  color: var(--color-blue-dark);
  border: 1px solid #D0E1FD;
  font-weight: 700;
}

.btn-header-contact:hover {
  background: #DCEAFE;
  color: #1D4ED8;
}

/* 4. Ana Düzen (Grid Layout) */
.main-wrapper {
  max-width: 1240px;
  margin: 2rem auto;
  padding: 0 1.5rem;
  width: 100%;
  flex: 1;
}

.calculator-grid {
  display: grid;
  grid-template-columns: 1.05fr 1.15fr;
  gap: 2rem;
  align-items: start;
}

/* 5. Sol Kolon: Giriş Alanları (Inputs Panel) */
.inputs-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
}

.card-title-group {
  margin-bottom: 1.75rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: #0F172A;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  letter-spacing: -0.02em;
}

.card-badge {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 0.65rem;
  border-radius: 9999px;
  background: var(--color-blue-bg);
  color: var(--color-blue-dark);
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: #334155;
  margin-bottom: 0.4rem;
}

.form-label .optional-tag {
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--text-muted);
  margin-left: 0.35rem;
}

.input-container {
  position: relative;
  display: flex;
  align-items: center;
}

.input-prefix {
  position: absolute;
  left: 1rem;
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.95rem;
  pointer-events: none;
}

.form-input {
  width: 100%;
  padding: 0.75rem 1rem 0.75rem 2.5rem;
  background-color: var(--bg-input);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 500;
  color: #0F172A;
  outline: none;
  transition: all var(--transition-speed);
}

.form-input:focus {
  background-color: #FFFFFF;
  border-color: var(--border-focus);
  box-shadow: var(--shadow-glow-blue);
}

.form-input::placeholder {
  color: var(--text-light);
}

/* Komisyon Hızlı Seçim Butonları */
.quick-pills {
  display: flex;
  gap: 0.4rem;
  margin-top: 0.5rem;
  flex-wrap: wrap;
}

.quick-pill {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
  color: #475569;
  padding: 0.22rem 0.65rem;
  cursor: pointer;
  transition: all 0.15s ease;
}

.quick-pill:hover {
  background: #E2E8F0;
  color: #0F172A;
}

.quick-pill.active {
  background: var(--color-blue);
  color: #FFFFFF;
  border-color: var(--color-blue);
}

/* 6. Sağ Kolon: Sonuç Paneli (Results Panel) */
.results-card {
  background: var(--bg-card);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-md);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

/* ZARAR DURUMU STİLLERİ (LOSS STATE) */
.results-card.loss-state {
  background-color: #FDEDEC !important;
  border-color: var(--color-red) !important;
  box-shadow: 0 12px 28px -6px rgba(231, 76, 60, 0.25), 0 0 0 1px #E74C3C !important;
}

.loss-alert-banner {
  display: none;
  background-color: var(--color-red);
  color: #FFFFFF;
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  margin-bottom: 1.5rem;
  animation: shakeAlert 0.4s ease;
  box-shadow: 0 4px 12px rgba(231, 76, 60, 0.3);
}

.results-card.loss-state .loss-alert-banner {
  display: block;
}

@keyframes shakeAlert {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-4px); }
  40%, 80% { transform: translateX(4px); }
}

.loss-alert-header {
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: 0.01em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.loss-alert-desc {
  font-size: 0.875rem;
  margin-top: 0.4rem;
  opacity: 0.95;
  line-height: 1.45;
}

/* Büyük Yeşil Kutu: Zarar Etmeme Fiyatı */
.break-even-box {
  background: var(--color-green-bg);
  border: 2px solid var(--color-green);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  text-align: center;
  margin-bottom: 1.5rem;
  transition: all var(--transition-speed);
}

.break-even-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-green-dark);
  margin-bottom: 0.35rem;
}

.break-even-price {
  font-size: 2.6rem;
  font-weight: 800;
  color: #1E8449;
  letter-spacing: -0.04em;
  line-height: 1.1;
}

.break-even-desc {
  font-size: 0.85rem;
  color: #27AE60;
  margin-top: 0.4rem;
  font-weight: 600;
}

/* Hedef Kârlı Fiyat Bilgi Kartı */
.target-price-box {
  background: #F8FAFC;
  border: 1px dashed #CBD5E1;
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.target-price-label {
  font-size: 0.875rem;
  font-weight: 700;
  color: #334155;
}

.target-price-sub {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.target-price-value {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--color-blue);
  letter-spacing: -0.02em;
}

/* Planlanan Satış Fiyatı Giriş Bölümü */
.planned-section {
  background: #FFFFFF;
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  margin-bottom: 1.5rem;
  transition: all var(--transition-speed);
}

.results-card.loss-state .planned-section {
  border-color: var(--color-red-border);
  background: #FFF5F5;
}

.planned-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.6rem;
}

.planned-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: #0F172A;
}

.quick-apply-btn {
  background: none;
  border: none;
  color: var(--color-blue);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: underline;
  padding: 0;
}

.quick-apply-btn:hover {
  color: var(--color-blue-dark);
}

/* Kâr / Zarar & Metrikler Tablosu */
.metrics-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 1rem;
}

.metric-item {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.85rem 1rem;
  transition: all var(--transition-speed);
}

.results-card.loss-state .metric-item {
  background: #FFFFFF;
  border-color: #FCDAD7;
}

.metric-label {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.25rem;
}

.metric-val {
  font-size: 1.25rem;
  font-weight: 800;
  color: #0F172A;
  letter-spacing: -0.02em;
}

.metric-val.profit {
  color: var(--color-green-dark);
}

.metric-val.loss {
  color: var(--color-red);
}

/* Masraf ve Dağılım Özeti */
.cost-breakdown {
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
}

.breakdown-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0.35rem;
}

.breakdown-row.total {
  font-weight: 800;
  color: #0F172A;
  border-top: 1px dashed var(--border-color);
  padding-top: 0.5rem;
  margin-top: 0.5rem;
}

/* Aksiyon Butonları */
.action-btn-group {
  margin-top: 1.75rem;
}

.btn-primary {
  width: 100%;
  background: var(--color-blue);
  color: #FFFFFF;
  border: none;
  border-radius: var(--radius-md);
  padding: 1rem 1.5rem;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  box-shadow: 0 4px 14px rgba(52, 152, 219, 0.35);
  transition: all var(--transition-speed);
}

.btn-primary:hover {
  background: var(--color-blue-dark);
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(52, 152, 219, 0.42);
}

.btn-primary:active {
  transform: translateY(0);
}

/* ==========================================================================
   7. REKLAM VE İLETİŞİM DOKUNMA NOKTALARI (2-3 ADET ALAN)
   ========================================================================== */

/* Dokunma Noktası 2: Orta Sponsorluk & Reklam Banner Kutusu */
.ad-banner-section {
  max-width: 1240px;
  margin: 2.5rem auto 0;
  padding: 0 1.5rem;
}

.ad-banner-card {
  background: linear-gradient(135deg, #FFFBEB 0%, #FEF3C7 100%);
  border: 1.5px dashed #F59E0B;
  border-radius: var(--radius-lg);
  padding: 1.5rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-speed);
}

.ad-banner-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.ad-banner-info {
  flex: 1;
  min-width: 280px;
}

.ad-badge {
  display: inline-block;
  background: #F59E0B;
  color: #FFFFFF;
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.2rem 0.6rem;
  border-radius: 9999px;
  margin-bottom: 0.45rem;
}

.ad-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: #78350F;
  letter-spacing: -0.02em;
}

.ad-desc {
  font-size: 0.875rem;
  color: #92400E;
  margin-top: 0.25rem;
  line-height: 1.45;
}

.ad-banner-buttons {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.btn-ad-cta {
  background: #D97706;
  color: #FFFFFF;
  border: none;
  padding: 0.65rem 1.25rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-speed);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.btn-ad-cta:hover {
  background: #B45309;
}

.btn-ad-contact {
  background: #FFFFFF;
  color: #78350F;
  border: 1px solid #FCD34D;
  padding: 0.65rem 1.25rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-speed);
}

.btn-ad-contact:hover {
  background: #FEF3C7;
}

/* Dokunma Noktası 3: Sayfa Altı Çift Çağrı Kartı (Call-To-Action) */
.cta-cards-section {
  max-width: 1240px;
  margin: 2rem auto;
  padding: 0 1.5rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.cta-card {
  background: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all var(--transition-speed);
}

.cta-card:hover {
  border-color: var(--color-blue);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.cta-card-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.cta-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}

.cta-icon.ad {
  background: #FEF3C7;
  color: #D97706;
}

.cta-icon.contact {
  background: var(--color-blue-bg);
  color: var(--color-blue);
}

.cta-card-title {
  font-size: 1.1rem;
  font-weight: 800;
  color: #0F172A;
}

.cta-card-desc {
  font-size: 0.875rem;
  color: var(--text-body);
  line-height: 1.5;
  margin-bottom: 1.25rem;
}

.btn-card-action {
  align-self: flex-start;
  padding: 0.55rem 1.15rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
  border: none;
  transition: all var(--transition-speed);
}

.btn-card-action.ad {
  background: var(--color-blue);
  color: #FFFFFF;
}

.btn-card-action.ad:hover {
  background: var(--color-blue-dark);
}

.btn-card-action.contact {
  background: var(--bg-secondary);
  color: #0F172A;
  border: 1px solid var(--border-color);
}

.btn-card-action.contact:hover {
  background: #E2E8F0;
}

/* ==========================================================================
   8. SEO VE REHBER BÖLÜMÜ (SEO CONTENT & FAQ)
   ========================================================================== */
.seo-guide-section {
  max-width: 1240px;
  margin: 1rem auto 3rem;
  padding: 0 1.5rem;
}

.seo-card {
  background: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  box-shadow: var(--shadow-sm);
}

.seo-card h2 {
  font-size: 1.35rem;
  font-weight: 800;
  color: #0F172A;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

.seo-card p {
  font-size: 0.925rem;
  color: var(--text-body);
  line-height: 1.65;
  margin-bottom: 1.25rem;
}

.faq-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.faq-item {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
}

.faq-question {
  font-size: 0.95rem;
  font-weight: 700;
  color: #0F172A;
  margin-bottom: 0.5rem;
}

.faq-answer {
  font-size: 0.85rem;
  color: var(--text-body);
  line-height: 1.55;
}

/* ==========================================================================
   9. GELİŞMİŞ FOOTER (METİNDİJİTAL.COM ÜRÜNÜ)
   ========================================================================== */
.app-footer {
  background: #FFFFFF;
  border-top: 1px solid var(--border-color);
  padding: 3.5rem 1.5rem 1.5rem;
  margin-top: auto;
}

.footer-inner {
  max-width: 1240px;
  margin: 0 auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 3rem;
}

.footer-brand {
  max-width: 360px;
}

.footer-logo-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.footer-logo-img {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
}

.footer-brand-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: #0F172A;
  letter-spacing: -0.02em;
}

.footer-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 1.25rem;
}

/* Özel metindijital.com rozeti */
.metin-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: #F1F5F9;
  border: 1px solid #CBD5E1;
  padding: 0.45rem 0.9rem;
  border-radius: 9999px;
  font-size: 0.825rem;
  color: #1E293B;
  font-weight: 600;
  transition: all var(--transition-speed);
}

.metin-badge:hover {
  background: #E2E8F0;
  color: #0F172A;
  border-color: #94A3B8;
}

.metin-badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #2563EB;
}

.footer-col h4 {
  font-size: 0.925rem;
  font-weight: 700;
  color: #0F172A;
  margin-bottom: 1.15rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.65rem;
}

.footer-links a {
  font-size: 0.875rem;
  color: var(--text-body);
  transition: color var(--transition-speed);
}

.footer-links a:hover {
  color: var(--color-blue);
}

.footer-bottom-bar {
  border-top: 1px solid var(--border-color);
  padding-top: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-bottom-left a {
  color: #0F172A;
  font-weight: 700;
}

.footer-bottom-left a:hover {
  color: var(--color-blue);
  text-decoration: underline;
}

/* 10. Modallar (Görsel Önizleme & İletişim Formu) */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(15, 23, 42, 0.65);
  backdrop-filter: blur(4px);
  z-index: 100;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.modal-overlay.active {
  display: flex;
}

.modal-content {
  background: #FFFFFF;
  border-radius: var(--radius-lg);
  max-width: 580px;
  width: 100%;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  animation: modalFadeIn 0.25s ease;
}

@keyframes modalFadeIn {
  from { opacity: 0; transform: scale(0.96); }
  to { opacity: 1; transform: scale(1); }
}

.modal-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-title {
  font-size: 1.2rem;
  font-weight: 800;
  color: #0F172A;
  letter-spacing: -0.02em;
}

.modal-close-btn {
  background: none;
  border: none;
  font-size: 1.6rem;
  color: var(--text-muted);
  cursor: pointer;
  line-height: 1;
}

.modal-close-btn:hover {
  color: #0F172A;
}

.modal-body {
  padding: 1.5rem;
  overflow-y: auto;
  background: #FFFFFF;
}

.modal-preview-img {
  max-width: 100%;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
  display: block;
  margin: 0 auto;
}

.modal-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
  background: #FFFFFF;
}

/* İletişim & Reklam Formu Sekmeleri */
.modal-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.75rem;
}

.modal-tab-btn {
  background: none;
  border: none;
  padding: 0.5rem 1rem;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-muted);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: all var(--transition-speed);
}

.modal-tab-btn.active {
  background: var(--color-blue-bg);
  color: var(--color-blue-dark);
}

.modal-form-group {
  margin-bottom: 1rem;
}

.modal-form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: #334155;
  margin-bottom: 0.35rem;
}

.modal-form-input, .modal-form-textarea, .modal-form-select {
  width: 100%;
  padding: 0.7rem 0.9rem;
  background: var(--bg-input);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 0.925rem;
  color: #0F172A;
  outline: none;
  font-family: inherit;
  transition: all var(--transition-speed);
}

.modal-form-input:focus, .modal-form-textarea:focus, .modal-form-select:focus {
  background: #FFFFFF;
  border-color: var(--border-focus);
  box-shadow: var(--shadow-glow-blue);
}

/* 11. Mobil Uyumluluk (Responsive Media Queries) */
@media (max-width: 960px) {
  .calculator-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
  
  .cta-cards-section {
    grid-template-columns: 1fr;
  }
  
  .faq-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  .app-header {
    padding: 0.85rem 1rem;
  }

  .header-actions {
    width: 100%;
    justify-content: flex-start;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 1.75rem;
  }

  .inputs-card, .results-card {
    padding: 1.25rem;
  }

  .break-even-price {
    font-size: 2.1rem;
  }

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

  .ad-banner-card {
    padding: 1.25rem;
  }
}

/* ==========================================================================
   12. PİYASA FİYAT RADARI VE BENZER ÜRÜN MOTORU (ULTRA-PREMIUM REDESIGN)
   ========================================================================== */
.market-engine-section {
  max-width: 1240px;
  margin: 3rem auto 0;
  padding: 0 1.5rem;
}

.market-card {
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  box-shadow: 0 10px 30px -5px rgba(0, 0, 0, 0.04), 0 4px 12px -2px rgba(0, 0, 0, 0.02);
  position: relative;
  overflow: hidden;
  transition: all var(--transition-speed);
}

.market-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #4F46E5 0%, #06B6D4 50%, #10B981 100%);
}

.market-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.25rem;
  margin-bottom: 1.75rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid #F1F5F9;
}

.market-title-group {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.market-icon {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, #4F46E5 0%, #3730A3 100%);
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  box-shadow: 0 8px 16px -2px rgba(79, 70, 229, 0.35);
}

.market-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: #0F172A;
  letter-spacing: -0.03em;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.market-live-pill {
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: #EEF2FF;
  color: #4F46E5;
  padding: 0.2rem 0.6rem;
  border-radius: 9999px;
  border: 1px solid #C7D2FE;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.market-live-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #10B981;
  box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.25);
  animation: pulseDot 2s infinite;
}

@keyframes pulseDot {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.5); }
  70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.market-subtitle {
  font-size: 0.88rem;
  color: #64748B;
  margin-top: 0.2rem;
}

.market-query-badge {
  background: #F8FAFC;
  border: 1px solid #E2E8F0;
  color: #1E293B;
  font-size: 0.85rem;
  font-weight: 700;
  padding: 0.45rem 1rem;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  box-shadow: var(--shadow-sm);
}

/* Hızlı Kategori Seçim Çipleri */
.category-chips {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}

.category-chip {
  background: #F8FAFC;
  border: 1px solid #E2E8F0;
  padding: 0.4rem 0.95rem;
  border-radius: 9999px;
  font-size: 0.82rem;
  font-weight: 600;
  color: #475569;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.category-chip:hover {
  background: #F1F5F9;
  color: #0F172A;
  border-color: #CBD5E1;
  transform: translateY(-1px);
}

.category-chip.active {
  background: #0F172A;
  color: #FFFFFF;
  border-color: #0F172A;
  box-shadow: 0 4px 10px rgba(15, 23, 42, 0.2);
}

/* 3 Büyük Fiyat Metrik Kartı */
.market-stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.market-stat-box {
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: var(--radius-md);
  padding: 1.5rem 1.25rem;
  text-align: center;
  transition: all 0.25s ease;
  position: relative;
  overflow: hidden;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.02);
}

.market-stat-box:hover {
  border-color: #CBD5E1;
  box-shadow: 0 8px 20px -4px rgba(0, 0, 0, 0.06);
  transform: translateY(-2px);
}

.market-stat-box.low {
  background: linear-gradient(180deg, #F0F9FF 0%, #FFFFFF 100%);
  border-color: #BAE6FD;
}

.market-stat-box.avg {
  background: linear-gradient(180deg, #EEF2FF 0%, #FFFFFF 100%);
  border-color: #C7D2FE;
  box-shadow: 0 4px 14px rgba(79, 70, 229, 0.08);
}

.market-stat-box.high {
  background: linear-gradient(180deg, #F0FDF4 0%, #FFFFFF 100%);
  border-color: #BBF7D0;
}

.market-stat-label {
  font-size: 0.76rem;
  font-weight: 800;
  color: #64748B;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.4rem;
}

.market-stat-price {
  font-size: 2.1rem;
  font-weight: 800;
  color: #0F172A;
  letter-spacing: -0.04em;
  line-height: 1.1;
}

.market-stat-price.low {
  color: #0284C7;
}

.market-stat-price.avg {
  color: #4338CA;
}

.market-stat-price.high {
  color: #15803D;
}

.market-stat-hint {
  font-size: 0.77rem;
  color: #64748B;
  margin-top: 0.35rem;
  font-weight: 500;
}

/* YENİ: Görsel Fiyat Yelpazesi ve Konumlandırma Çubuğu (Market Range Visualizer) */
.market-range-visualizer {
  background: #F8FAFC;
  border: 1px solid #E2E8F0;
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.5rem;
}

.range-bar-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  font-weight: 700;
  color: #475569;
  margin-bottom: 0.75rem;
}

.range-track-container {
  position: relative;
  height: 10px;
  background: #E2E8F0;
  border-radius: 9999px;
  overflow: visible;
  margin: 1rem 0 1.25rem;
}

.range-track-fill {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(90deg, #38BDF8 0%, #818CF8 50%, #34D399 100%);
  border-radius: 9999px;
}

.range-marker-user {
  position: absolute;
  top: -6px;
  transform: translateX(-50%);
  width: 22px;
  height: 22px;
  background: #EF4444;
  border: 3px solid #FFFFFF;
  border-radius: 50%;
  box-shadow: 0 2px 6px rgba(239, 68, 68, 0.4);
  transition: left 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 10;
}

.range-marker-label {
  position: absolute;
  top: -30px;
  left: 50%;
  transform: translateX(-50%);
  background: #0F172A;
  color: #FFFFFF;
  font-size: 0.7rem;
  font-weight: 800;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  white-space: nowrap;
}

.range-marker-label::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 50%;
  transform: translateX(-50%);
  border-width: 4px 4px 0;
  border-style: solid;
  border-color: #0F172A transparent;
  display: block;
  width: 0;
}

.range-legend-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: #64748B;
}

/* Stratejik Rekabet & Konumlandırma İpucu */
.market-insight-bar {
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-left: 4px solid #4F46E5;
  border-radius: var(--radius-sm);
  padding: 1.15rem 1.35rem;
  margin-bottom: 2rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.92rem;
  color: #1E293B;
  line-height: 1.6;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.02);
}

.market-insight-icon {
  font-size: 1.75rem;
  flex-shrink: 0;
}

/* Benzer Ürünler Kart Izgarası */
.similar-products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.product-compare-card {
  background: #FFFFFF;
  border: 1.5px solid #F1F5F9;
  border-radius: var(--radius-md);
  padding: 1.35rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.03);
  position: relative;
}

.product-compare-card:hover {
  border-color: #C7D2FE;
  box-shadow: 0 10px 25px -5px rgba(79, 70, 229, 0.1), 0 8px 10px -6px rgba(79, 70, 229, 0.04);
  transform: translateY(-3px);
}

.card-top-info {
  margin-bottom: 1rem;
}

.card-badge-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.65rem;
}

.marketplace-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.72rem;
  font-weight: 800;
  padding: 0.22rem 0.6rem;
  border-radius: 9999px;
  letter-spacing: 0.04em;
}

.marketplace-badge.trendyol {
  background: #FFF4EC;
  color: #EA580C;
  border: 1px solid #FFD8BE;
}

.marketplace-badge.hepsiburada {
  background: #FFF1E8;
  color: #FF6000;
  border: 1px solid #FFD4BC;
}

.marketplace-badge.amazon {
  background: #0F172A;
  color: #FF9900;
  border: 1px solid #334155;
}

.marketplace-badge.n11 {
  background: #FDF2F2;
  color: #DC2626;
  border: 1px solid #FECACA;
}

.marketplace-badge.genel {
  background: #F1F5F9;
  color: #334155;
  border: 1px solid #E2E8F0;
}

.product-rating-tag {
  font-size: 0.75rem;
  color: #B45309;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.2rem;
}

.compare-product-title {
  font-size: 0.94rem;
  font-weight: 700;
  color: #0F172A;
  line-height: 1.45;
  margin-bottom: 0.5rem;
}

.compare-product-specs {
  font-size: 0.77rem;
  color: #64748B;
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 0.5rem;
}

.spec-pill {
  background: #F8FAFC;
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  border: 1px solid #E2E8F0;
}

.compare-price-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 0.85rem;
  padding-top: 0.85rem;
  border-top: 1px dashed #E2E8F0;
}

.compare-price-val {
  font-size: 1.45rem;
  font-weight: 800;
  color: #0F172A;
  letter-spacing: -0.03em;
}

.btn-apply-price {
  background: #EEF2FF;
  color: #4F46E5;
  border: 1px solid #C7D2FE;
  padding: 0.5rem 0.95rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: all 0.2s ease;
}

.btn-apply-price:hover {
  background: #4F46E5;
  color: #FFFFFF;
  border-color: #4F46E5;
  box-shadow: 0 4px 10px rgba(79, 70, 229, 0.3);
  transform: translateY(-1px);
}

/* Canlı Pazaryeri Arama Butonları (Branded) */
.live-search-links {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  flex-wrap: wrap;
  padding-top: 1.5rem;
  border-top: 1px solid #F1F5F9;
}

.live-search-label {
  font-size: 0.88rem;
  font-weight: 800;
  color: #1E293B;
  margin-right: 0.5rem;
}

.btn-live-search {
  background: #FFFFFF;
  border: 1.5px solid #E2E8F0;
  padding: 0.55rem 1.1rem;
  border-radius: var(--radius-sm);
  font-size: 0.825rem;
  font-weight: 700;
  color: #334155;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  transition: all 0.2s ease;
  box-shadow: var(--shadow-sm);
}

.btn-live-search:hover {
  background: #F8FAFC;
  border-color: #CBD5E1;
  color: #0F172A;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-live-search.ty:hover {
  border-color: #F97316;
  color: #EA580C;
}

.btn-live-search.hb:hover {
  border-color: #FF6000;
  color: #FF6000;
}

.btn-live-search.amz:hover {
  border-color: #0F172A;
  color: #0F172A;
}

.btn-live-search.gg:hover {
  border-color: #2563EB;
  color: #2563EB;
}

@media (max-width: 768px) {
  .market-card {
    padding: 1.5rem;
  }
  .market-stats-grid {
    grid-template-columns: 1fr;
  }
}