/* ========================================
   BANANABADANA - Muz Sarısı Tema
   Production-Ready CSS
   ======================================== */

:root {
  /* Ana Renkler - Apple Modern */
  --primary-yellow: #FFE066;
  --primary-yellow-hover: #FFF3B0;
  --accent-yellow: #FFD43B;
  --text-primary: #1D1D1F;
  --text-secondary: #6F6F77;
  --white: #FFFFFF;
  --bg-primary: #FFFFFF;
  --bg-secondary: #FAFAFA;
  --bg-tertiary: #F5F5F7;
  --border-color: #E5E5EA;

  /* Duygusal Renkler - Soft Tones */
  --success: #34C759;
  --success-light: #D1EDDA;
  --warning: #FFC107;
  --error: #F44336;
  --info: #2196F3;
  --dark-gray: #1D1D1F;

  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", Inter, Segoe UI, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;
  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;

  /* Shadows - Soft & Modern */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 8px 24px rgba(0, 0, 0, 0.12);

  /* Border Radius - Apple Style */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 18px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 300ms ease-in-out;
  --transition-slow: 500ms ease-in-out;

  /* Z-Index */
  --z-hide: -1;
  --z-auto: auto;
  --z-base: 0;
  --z-dropdown: 100;
  --z-sticky: 500;
  --z-fixed: 1000;
  --z-modal: 10000;
}

/* ========================================
   RESET & BASE STYLES
   ======================================== */

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  overflow-x: hidden;
}

/* ========================================
   TYPOGRAPHY
   ======================================== */

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: var(--line-height-tight);
  margin-bottom: var(--spacing-lg);
  color: var(--text-primary);
}

h1 { font-size: var(--font-size-4xl); letter-spacing: -0.02em; }
h2 { font-size: var(--font-size-3xl); letter-spacing: -0.01em; }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); font-weight: 600; }
h5 { font-size: var(--font-size-lg); font-weight: 600; }
h6 { font-size: var(--font-size-base); font-weight: 600; }

p {
  margin-bottom: var(--spacing-md);
  line-height: var(--line-height-relaxed);
  color: var(--text-secondary);
}

a {
  color: var(--primary-yellow);
  text-decoration: none;
  transition: color var(--transition-base);
}

a:hover {
  color: var(--accent-yellow);
}

/* ========================================
   BUTTONS
   ======================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  font-size: var(--font-size-base);
  font-weight: 600;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  white-space: nowrap;
  gap: var(--spacing-sm);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Variants */
.btn-primary {
  background-color: var(--primary-yellow);
  color: var(--text-primary);
  box-shadow: var(--shadow-md);
  border: 1px solid transparent;
}

.btn-primary:hover:not(:disabled) {
  background-color: var(--primary-yellow-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover:not(:disabled) {
  background-color: var(--bg-secondary);
  border-color: var(--text-secondary);
}

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

.btn-dark:hover:not(:disabled) {
  background-color: #0A0A0B;
}

/* Sizes */
.btn-sm { padding: var(--spacing-sm) var(--spacing-md); font-size: var(--font-size-sm); }
.btn-lg { padding: var(--spacing-lg) var(--spacing-2xl); font-size: var(--font-size-lg); }

.btn-block { width: 100%; }

/* ========================================
   CARD COMPONENT
   ======================================== */

.card {
  background-color: var(--white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  border: 1px solid var(--border-color);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.card-header {
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
}

.card-body { }

.card-footer {
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--border-color);
}

/* ========================================
   CONTAINER & GRID
   ======================================== */

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.grid {
  display: grid;
  gap: var(--spacing-xl);
}

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

@media (max-width: 768px) {
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
}

/* ========================================
   HEADER & NAVIGATION
   ======================================== */

header {
  background-color: var(--white);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md) 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--primary-yellow);
  text-decoration: none;
}

.logo img {
  height: 40px;
  width: auto;
}

nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-2xl);
}

.nav-links {
  display: flex;
  list-style: none;
  gap: var(--spacing-2xl);
  align-items: center;
}

.nav-links a {
  color: var(--text-primary);
  font-weight: 500;
  position: relative;
  transition: all var(--transition-fast);
}

.nav-links a:hover {
  color: var(--primary-yellow);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary-yellow);
  transition: width var(--transition-fast);
}

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

.hamburger {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
}

.hamburger span {
  width: 24px;
  height: 3px;
  background-color: var(--text-primary);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

/* Mobile Menu */
@media (max-width: 768px) {
  .hamburger { display: flex; }

  nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--white);
    flex-direction: column;
    gap: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base);
    box-shadow: var(--shadow-md);
  }

  nav.active {
    max-height: 400px;
  }

  .nav-links {
    flex-direction: column;
    gap: var(--spacing-md);
    padding: var(--spacing-xl) var(--spacing-lg);
    width: 100%;
  }

  .nav-links a::after {
    display: none;
  }
}

/* ========================================
   HERO SECTION
   ======================================== */

.hero {
  background: linear-gradient(180deg, var(--white) 0%, var(--bg-secondary) 100%);
  padding: 80px 0;
  text-align: center;
  color: var(--text-primary);
}

.hero-content h1 {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--spacing-lg);
  animation: slideDown var(--transition-slow) ease-out;
}

.hero-content p {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-2xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  animation: slideUp var(--transition-slow) ease-out 0.2s both;
}

.hero-cta {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

@media (max-width: 768px) {
  .hero {
    padding: var(--spacing-2xl) 0;
  }

  .hero-content h1 {
    font-size: var(--font-size-3xl);
  }

  .hero-content p {
    font-size: var(--font-size-lg);
  }
}

/* ========================================
   SECTION STYLES
   ======================================== */

section {
  padding: 60px 0;
}

section.alt {
  background-color: var(--bg-secondary);
}

.section-title {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.section-title h2 {
  position: relative;
  display: inline-block;
}

.section-title h2::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background-color: var(--primary-yellow);
  border-radius: var(--radius-sm);
}

/* ========================================
   FOOTER
   ======================================== */

footer {
  background-color: var(--dark-gray);
  color: var(--white);
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

.footer-section h3 {
  color: var(--primary-yellow);
  margin-bottom: var(--spacing-md);
}

.footer-section a {
  color: var(--gray-light);
  display: block;
  margin-bottom: var(--spacing-sm);
}

.footer-section a:hover {
  color: var(--primary-yellow);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-lg);
  border-top: 1px solid rgba(255, 212, 0, 0.2);
  font-size: var(--font-size-sm);
}

/* ========================================
   FORMS
   ======================================== */

form {
  max-width: 600px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: var(--spacing-lg);
}

label {
  display: block;
  font-weight: var(--font-weight-medium);
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
  font-size: var(--font-size-sm);
}

input,
textarea,
select {
  width: 100%;
  padding: 12px var(--spacing-md);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  font-family: inherit;
  transition: all var(--transition-base);
  background-color: var(--bg-primary);
  color: var(--text-primary);
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--primary-yellow);
  box-shadow: 0 0 0 3px rgba(255, 224, 102, 0.15);
}

textarea {
  resize: vertical;
  min-height: 120px;
}

/* ========================================
   ANIMATIONS
   ======================================== */

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* ========================================
   UTILITY CLASSES
   ======================================== */

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-primary { color: var(--primary-yellow); }
.text-dark { color: var(--text-primary); }
.text-light { color: var(--bg-secondary); }
.text-muted { color: var(--text-secondary); }

.bg-primary { background-color: var(--primary-yellow); }
.bg-dark { background-color: var(--text-primary); }
.bg-light { background-color: var(--bg-secondary); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }

.py-1 { padding: var(--spacing-sm) 0; }
.py-2 { padding: var(--spacing-md) 0; }
.py-3 { padding: var(--spacing-lg) 0; }
.py-4 { padding: var(--spacing-xl) 0; }

.hidden { display: none; }
.visible { display: block; }

/* ========================================
   WHATSAPP FLOATING BUTTON
   ======================================== */

.whatsapp-btn {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background-color: #25D366;
  background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="white"><path d="M17.472 14.382c-.297-.149-1.758-.867-2.03-.967-.273-.099-.471-.148-.67.15-.197.297-.767.966-.94 1.164-.173.199-.347.223-.644.075-.297-.15-1.255-.463-2.39-1.475-.883-.788-1.48-1.761-1.653-2.059-.173-.297-.018-.458.13-.606.134-.133.298-.347.446-.52.149-.174.198-.298.298-.497.099-.198.05-.371-.025-.52-.075-.149-.669-1.612-.916-2.207-.242-.579-.487-.5-.67-.51-.173-.008-.371-.01-.57-.01-.198 0-.52.074-.792.372-.272.297-1.04 1.016-1.04 2.479 0 1.462 1.065 2.875 1.213 3.074.149.198 2.096 3.2 5.076 4.487.709.306 1.262.489 1.694.625.712.227 1.36.195 1.871.118.571-.085 1.758-.719 2.006-1.413.248-.694.248-1.289.173-1.413-.074-.124-.272-.198-.57-.347m-5.421-7.403h-.004c-1.025 0-2.031.313-2.89.893l-.4.294-4.145-.992.992 4.083-.309.488a4.77 4.77 0 1 0 9.024-2.766m9.854-5.540C19.502 1.244 15.56 0 12.3 0 6.288 0 1.493 4.787 1.493 10.8c0 1.965.526 3.88 1.526 5.545L0 24l8.934-2.32c1.719.922 3.6 1.43 5.366 1.43h5.004c6.012 0 10.807-4.787 10.807-10.8 0-2.89-.732-5.637-2.089-8.079Z"/></svg>');
  background-position: center;
  background-repeat: no-repeat;
  background-size: 32px 32px;
  box-shadow: 0 4px 16px rgba(37, 211, 102, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  z-index: 1000;
  transition: all 300ms ease-in-out;
}

.whatsapp-btn:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 24px rgba(37, 211, 102, 0.4);
  background-color: #20BA5A;
}

.whatsapp-btn:active {
  transform: scale(0.95);
}

@media (max-width: 768px) {
  .whatsapp-btn {
    bottom: 20px;
    right: 20px;
    width: 56px;
    height: 56px;
    background-size: 28px 28px;
  }
}

/* ========================================
   ACCESSIBILITY
   ======================================== */

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

:focus-visible {
  outline: 2px solid var(--primary-yellow);
  outline-offset: 2px;
}

/* ========================================
   PRINT STYLES
   ======================================== */

@media print {
  * {
    background: transparent !important;
    color: black !important;
    box-shadow: none !important;
    text-shadow: none !important;
  }

  a {
    text-decoration: underline;
  }

  img {
    max-width: 100% !important;
  }
}