/* ==========================================================================
   NEXT GENERATION ACADEMY (NGA) - DESIGN SYSTEM & STYLESHEET
   Aesthetics: Apple + Modern High-Tech Startup + International Academy
   ========================================================================== */

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

:root {
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: 'Outfit', sans-serif;

  /* Color Palette */
  --bg-dark: #070b14;
  --bg-card: #0f172a;
  --bg-card-hover: #17233e;
  --bg-glass: rgba(15, 23, 42, 0.75);
  --border-light: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(99, 102, 241, 0.5);

  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --primary-glow: rgba(99, 102, 241, 0.35);

  --cyan: #06b6d4;
  --purple: #a855f7;
  --emerald: #10b981;
  --amber: #f59e0b;
  --rose: #f43f5e;

  --grad-hero: linear-gradient(135deg, #6366f1 0%, #a855f7 50%, #06b6d4 100%);
  --grad-card: linear-gradient(180deg, rgba(30, 41, 59, 0.6) 0%, rgba(15, 23, 42, 0.8) 100%);
  --grad-glow: radial-gradient(circle at 50% 0%, rgba(99, 102, 241, 0.15) 0%, transparent 70%);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 30px;
  --radius-full: 9999px;

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.2);

  --transition-fast: 0.18s ease;
  --transition-base: 0.28s ease;
}

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

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  background-image: 
    radial-gradient(ellipse at 20% 0%, rgba(99, 102, 241, 0.12) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(6, 182, 212, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 80%, rgba(168, 85, 247, 0.07) 0%, transparent 60%);
  background-attachment: fixed;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

ul {
  list-style: none;
}

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

.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ==========================================================================
   HEADER & NAVIGATION
   Desktop: 2-Tier Header (Top: Logo + Phone + Buttons / Bottom: Full Nav Menu)
   Mobile: 1-Tier Header (Logo + Hamburger ONLY - NO buttons in header)
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(7, 11, 20, 0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-light);
  transition: all var(--transition-base);
}

/* --- Top Row: Logo, Phone & CTAs --- */
.header-top {
  padding: 14px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

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

.brand-wrapper {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
}

.brand-logo-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, #6366f1, #06b6d4);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 20px rgba(99, 102, 241, 0.4);
  position: relative;
  overflow: hidden;
}

.brand-logo-icon svg {
  width: 24px;
  height: 24px;
  fill: #ffffff;
}

.brand-text-wrap {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: #ffffff;
  line-height: 1.1;
}

.brand-title span {
  background: linear-gradient(90deg, #6366f1, #06b6d4);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-tagline {
  font-size: 11px;
  color: var(--text-muted);
  font-weight: 500;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

/* Header Top Actions (Desktop Only) */
.header-top-actions {
  display: flex;
  align-items: center;
  gap: 20px;
}

.header-phone-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-light);
  color: var(--text-main);
  font-weight: 600;
  font-size: 13.5px;
  transition: all var(--transition-fast);
}

.header-phone-link:hover {
  background: rgba(99, 102, 241, 0.12);
  border-color: var(--primary);
  color: #ffffff;
  transform: translateY(-1px);
}

.header-phone-icon {
  width: 16px;
  height: 16px;
  color: var(--cyan);
}

.header-actions-group {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* --- Bottom Row: Menu Placed Directly Under Logo --- */
.header-nav-bar {
  background: rgba(10, 16, 29, 0.6);
  padding: 4px 0;
}

.nav-links-list {
  display: flex;
  align-items: center;
  gap: 4px;
  overflow-x: auto;
  white-space: nowrap;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.nav-links-list::-webkit-scrollbar {
  display: none;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  padding: 10px 14px;
  font-size: 13.5px;
  font-weight: 600;
  color: #cbd5e1;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  letter-spacing: -0.2px;
}

.nav-link:hover {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.06);
}

.nav-link.active {
  color: #ffffff;
  background: rgba(99, 102, 241, 0.15);
  border: 1px solid rgba(99, 102, 241, 0.3);
}

.nav-badge-pill {
  font-size: 10px;
  padding: 2px 6px;
  border-radius: 999px;
  background: linear-gradient(90deg, #ec4899, #8b5cf6);
  color: #ffffff;
  margin-left: 6px;
  font-weight: 700;
}

/* Mobile Hamburger Toggle */
.mobile-nav-toggle {
  display: none;
  background: transparent;
  border: none;
  color: #ffffff;
  cursor: pointer;
  padding: 8px;
  border-radius: var(--radius-sm);
}

.mobile-nav-toggle:focus {
  outline: none;
}

/* ==========================================================================
   MOBILE DRAWER / MENU
   Contains all links + CTA buttons + Phone number
   ========================================================================== */
.mobile-drawer-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  z-index: 1998;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.mobile-drawer-overlay.open {
  display: block;
  opacity: 1;
}

.mobile-drawer {
  position: fixed;
  top: 0;
  right: -340px;
  width: 320px;
  max-width: 85vw;
  height: 100vh;
  background: #0d1424;
  border-left: 1px solid var(--border-light);
  z-index: 1999;
  display: flex;
  flex-direction: column;
  transition: right 0.32s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: -10px 0 40px rgba(0, 0, 0, 0.6);
  overflow-y: auto;
}

.mobile-drawer.open {
  right: 0;
}

.mobile-drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px;
  border-bottom: 1px solid var(--border-light);
}

.mobile-drawer-close {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-light);
  color: #cbd5e1;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.mobile-drawer-body {
  padding: 20px;
  flex: 1;
}

.mobile-menu-links {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.mobile-menu-links .nav-link {
  padding: 12px 14px;
  font-size: 15px;
  width: 100%;
}

.mobile-drawer-actions {
  padding: 20px;
  border-top: 1px solid var(--border-light);
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: #090e1a;
}

/* ==========================================================================
   BUTTONS & UI CONTROLS
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
  white-space: nowrap;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, #6366f1, #4f46e5);
  color: #ffffff;
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.35);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #4f46e5, #4338ca);
  box-shadow: 0 6px 22px rgba(99, 102, 241, 0.5);
  transform: translateY(-1px);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-light);
  color: #ffffff;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-1px);
}

.btn-accent {
  background: linear-gradient(135deg, #06b6d4, #3b82f6);
  color: #ffffff;
  box-shadow: 0 4px 16px rgba(6, 182, 212, 0.35);
}

.btn-accent:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(6, 182, 212, 0.5);
}

.btn-outline {
  background: transparent;
  border: 1px solid rgba(99, 102, 241, 0.4);
  color: #cbd5e1;
}

.btn-outline:hover {
  background: rgba(99, 102, 241, 0.1);
  color: #ffffff;
  border-color: var(--primary);
}

.btn-lg {
  padding: 14px 28px;
  font-size: 16px;
  border-radius: var(--radius-md);
}

.btn-sm {
  padding: 6px 12px;
  font-size: 12.5px;
}

.btn-block {
  width: 100%;
}

/* ==========================================================================
   CARDS & CONTAINERS
   ========================================================================== */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.card:hover {
  border-color: rgba(99, 102, 241, 0.3);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

.card-glass {
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 11.5px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-primary { background: rgba(99, 102, 241, 0.15); color: #818cf8; border: 1px solid rgba(99, 102, 241, 0.3); }
.badge-cyan { background: rgba(6, 182, 212, 0.15); color: #22d3ee; border: 1px solid rgba(6, 182, 212, 0.3); }
.badge-emerald { background: rgba(16, 185, 129, 0.15); color: #34d399; border: 1px solid rgba(16, 185, 129, 0.3); }
.badge-amber { background: rgba(245, 158, 11, 0.15); color: #fbbf24; border: 1px solid rgba(245, 158, 11, 0.3); }
.badge-rose { background: rgba(244, 63, 94, 0.15); color: #fb7185; border: 1px solid rgba(244, 63, 94, 0.3); }

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero-section {
  padding: 80px 0 60px;
  position: relative;
  text-align: center;
  overflow: hidden;
}

.hero-pill-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  background: rgba(99, 102, 241, 0.12);
  border: 1px solid rgba(99, 102, 241, 0.3);
  font-size: 13px;
  font-weight: 600;
  color: #a5b4fc;
  margin-bottom: 24px;
}

.hero-pill-badge .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #22d3ee;
  box-shadow: 0 0 10px #22d3ee;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(38px, 6vw, 68px);
  font-weight: 900;
  letter-spacing: -1.5px;
  line-height: 1.08;
  max-width: 900px;
  margin: 0 auto 20px;
  color: #ffffff;
}

.hero-title .gradient-text {
  background: linear-gradient(135deg, #6366f1 10%, #a855f7 50%, #06b6d4 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: clamp(16px, 2.2vw, 21px);
  color: #94a3b8;
  max-width: 680px;
  margin: 0 auto 36px;
  line-height: 1.5;
}

.hero-ctas {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 50px;
}

/* 4-Step Cycle Ribbon */
.cycle-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  max-width: 1040px;
  margin: 0 auto;
  padding: 24px;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
}

.cycle-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
}

.cycle-step-num {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(99, 102, 241, 0.15);
  border: 1px solid var(--primary);
  color: #a5b4fc;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  margin-bottom: 10px;
}

.cycle-step-name {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: 0.5px;
}

.cycle-step-desc {
  font-size: 12px;
  color: var(--text-dim);
  margin-top: 4px;
}

/* ==========================================================================
   SECTIONS & GRIDS
   ========================================================================== */
.section {
  padding: 70px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 50px;
}

.section-tag {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--cyan);
  margin-bottom: 10px;
  display: block;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
  letter-spacing: -0.8px;
  color: #ffffff;
  margin-bottom: 14px;
}

.section-desc {
  font-size: 16px;
  color: var(--text-muted);
}

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

/* ==========================================================================
   PROJECT CARDS & STAGES
   ========================================================================== */
.project-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.project-stage-pill {
  font-size: 11px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 999px;
  background: rgba(6, 182, 212, 0.15);
  color: #22d3ee;
  border: 1px solid rgba(6, 182, 212, 0.3);
}

.project-stages-bar {
  display: flex;
  align-items: center;
  gap: 4px;
  margin: 14px 0;
}

.stage-step-dot {
  flex: 1;
  height: 5px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 999px;
  position: relative;
}

.stage-step-dot.active {
  background: linear-gradient(90deg, #6366f1, #06b6d4);
  box-shadow: 0 0 8px rgba(99, 102, 241, 0.6);
}

/* ==========================================================================
   RADAR CHART & FUTURE SCORE
   ========================================================================== */
.score-circle-display {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  width: 160px;
  height: 160px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.25) 0%, rgba(15, 23, 42, 0.8) 70%);
  border: 3px solid #6366f1;
  box-shadow: 0 0 30px rgba(99, 102, 241, 0.4);
  margin: 0 auto 20px;
}

.score-number {
  font-family: var(--font-display);
  font-size: 44px;
  font-weight: 900;
  color: #ffffff;
  line-height: 1;
}

.score-max {
  font-size: 13px;
  color: #94a3b8;
  font-weight: 600;
}

/* ==========================================================================
   FORMS & INPUTS
   ========================================================================== */
.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 13.5px;
  font-weight: 600;
  color: #cbd5e1;
  margin-bottom: 8px;
}

.form-control {
  width: 100%;
  padding: 12px 16px;
  background: #090e1a;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  color: #ffffff;
  font-size: 14.5px;
  transition: all var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
  background: #0f172a;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer {
  background: #050811;
  border-top: 1px solid var(--border-light);
  padding: 60px 0 30px;
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1.5fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-col-title {
  font-size: 14px;
  font-weight: 700;
  color: #ffffff;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 18px;
}

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

.footer-link {
  color: var(--text-dim);
  font-size: 13.5px;
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: #ffffff;
}

.footer-contact-box {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-phone-cta {
  font-size: 16px;
  font-weight: 700;
  color: #22d3ee;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12.5px;
  color: var(--text-dim);
}

/* ==========================================================================
   RESPONSIVE MEDIA QUERIES
   ========================================================================== */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  /* CRITICAL USER REQUIREMENT:
     Mobil görünümde header alanında BUTON OLMAYACAK!
     Masaüstü aksiyonları gizlenir, sadece hamburger ikonu görünür.
     Tüm butonlar hamburger menü içinde açılır. */
  .header-top-actions {
    display: none !important;
  }

  .header-nav-bar {
    display: none !important; /* Bottom row menu collapses into hamburger */
  }

  .mobile-nav-toggle {
    display: block !important;
  }

  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }

  .cycle-strip {
    grid-template-columns: 1fr;
    gap: 20px;
  }

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

  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
}