/* ============================================
   Can Transfer & Yachting — VIP Rezervasyon
   ============================================ */

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

:root {
  /* Colors */
  --color-primary: #1B2B4A;
  --color-primary-light: #2D4063;
  --color-accent: #0369A1;
  --color-accent-light: #38BDF8;
  --color-gold: #D4A853;
  --color-gold-light: #F0D989;
  --color-bg: #F1F5F9;
  --color-surface: #FFFFFF;
  --color-text: #0F172A;
  --color-text-secondary: #64748B;
  --color-muted: #E2E8F0;
  --color-border: #CBD5E1;
  --color-error: #DC2626;
  --color-success: #059669;

  /* Typography */
  --font-heading: 'Cormorant', Georgia, serif;
  --font-body: 'Montserrat', -apple-system, sans-serif;

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;

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

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.08);
  --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.10);
  --shadow-lg: 0 8px 30px rgba(15, 23, 42, 0.12);
  --shadow-xl: 0 20px 60px rgba(15, 23, 42, 0.18);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
}

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

body {
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
  min-height: 100dvh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* --- Screens --- */
.screen {
  display: none;
  width: 100%;
  min-height: 100vh;
  min-height: 100dvh;
}
.screen.active {
  display: flex;
}

/* ============================================
   LOGIN SCREEN
   ============================================ */
#login-screen {
  align-items: center;
  justify-content: center;
  position: relative;
  padding: var(--space-md);
  background: linear-gradient(135deg, var(--color-primary) 0%, #1a2744 50%, var(--color-primary-light) 100%);
  overflow: hidden;
}

.login-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(212, 168, 83, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 50%, rgba(3, 105, 161, 0.10) 0%, transparent 50%);
  pointer-events: none;
}

.login-card {
  position: relative;
  width: 100%;
  max-width: 400px;
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl) var(--space-xl);
  box-shadow: var(--shadow-xl);
  animation: loginIn 0.5s ease-out;
}

@keyframes loginIn {
  from { opacity: 0; transform: translateY(20px) scale(0.97); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.login-brand {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.login-logo {
  font-size: 2.5rem;
  color: var(--color-gold);
  margin-bottom: var(--space-sm);
  display: block;
}

.login-title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.75rem;
  color: var(--color-primary);
  line-height: 1.2;
  letter-spacing: 0.02em;
}

.login-subtitle {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  margin-top: var(--space-xs);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* ============================================
   FORM ELEMENTS
   ============================================ */
.input-group {
  margin-bottom: var(--space-md);
  flex: 1;
  min-width: 0;
}

.input-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
  letter-spacing: 0.01em;
}

.required {
  color: var(--color-error);
}

input[type="text"],
input[type="password"],
input[type="date"],
input[type="number"],
textarea,
select {
  width: 100%;
  font-family: var(--font-body);
  font-size: 0.95rem;
  padding: 12px 14px;
  background: var(--color-bg);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}

input:focus,
textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(3, 105, 161, 0.12);
}

input::placeholder,
textarea::placeholder {
  color: #94A3B8;
}

textarea {
  resize: vertical;
  min-height: 60px;
  line-height: 1.5;
}

/* Password wrapper */
.password-wrapper {
  position: relative;
}
.password-wrapper input {
  padding-right: 44px;
}
.password-toggle {
  position: absolute;
  right: 4px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  padding: 10px;
  cursor: pointer;
  color: var(--color-text-secondary);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast);
}
.password-toggle:hover {
  color: var(--color-text);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 12px 20px;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
}
.btn-primary:hover {
  background: #075985;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(3, 105, 161, 0.3);
}
.btn-primary:active {
  transform: translateY(0);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-secondary);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
}
.btn-ghost:hover {
  background: rgba(15, 23, 42, 0.06);
  color: var(--color-text);
}

.btn-full {
  width: 100%;
}

.btn-lg {
  padding: 16px 24px;
  font-size: 1rem;
  border-radius: var(--radius-md);
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none !important;
}

/* Error */
.error-msg {
  font-size: 0.85rem;
  color: var(--color-error);
  text-align: center;
  margin-top: var(--space-md);
  font-weight: 500;
}

/* ============================================
   FORM SCREEN
   ============================================ */
#form-screen {
  flex-direction: column;
}

/* Header */
.form-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-lg);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-muted);
  position: sticky;
  top: 0;
  z-index: 10;
  box-shadow: var(--shadow-sm);
}

.header-brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.header-logo {
  font-size: 1.5rem;
  color: var(--color-gold);
}

.header-title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--color-primary);
  display: block;
  line-height: 1.2;
}

.header-label {
  font-size: 0.7rem;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 500;
}

/* Form container */
.form-container {
  flex: 1;
  padding: var(--space-lg);
  max-width: 680px;
  width: 100%;
  margin: 0 auto;
}

.form-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  animation: formIn 0.4s ease-out;
}

@keyframes formIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

.form-card-header {
  padding: var(--space-lg) var(--space-xl);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: #fff;
}

.form-card-header h2 {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.4rem;
  line-height: 1.3;
}

.form-card-header p {
  font-size: 0.85rem;
  opacity: 0.8;
  margin-top: var(--space-xs);
  font-weight: 400;
}

/* Form sections */
form {
  padding: var(--space-lg) var(--space-xl) var(--space-xl);
}

.form-section {
  border: none;
  padding: 0;
  margin-bottom: var(--space-lg);
}

.section-title {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 2px solid var(--color-muted);
  width: 100%;
}

.section-title svg {
  color: var(--color-accent);
  flex-shrink: 0;
}

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

.form-row-4 {
  grid-template-columns: 1fr 1fr 1fr;
}

.input-group-2 {
  grid-column: span 1;
}

.input-group-grow {
  flex: 1;
}

.input-group-price {
  max-width: 160px;
  flex-shrink: 0;
}

/* Toggle */
.toggle-group {
  display: flex;
  gap: var(--space-sm);
}

.toggle-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 14px 16px;
  background: var(--color-bg);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.toggle-btn:has(input:checked) {
  border-color: var(--color-accent);
  background: rgba(3, 105, 161, 0.06);
}

.toggle-btn:has(input:checked) .toggle-icon svg {
  stroke: var(--color-accent);
}

.toggle-btn:has(input:checked) .toggle-text {
  color: var(--color-accent);
  font-weight: 600;
}

.toggle-icon {
  display: flex;
  align-items: center;
}
.toggle-icon svg {
  stroke: var(--color-text-secondary);
  transition: stroke var(--transition-fast);
}

.toggle-text {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

/* Flight block */
.flight-block {
  margin-bottom: var(--space-md);
}

.flight-label {
  margin-bottom: var(--space-sm);
}

.flight-badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 12px;
  border-radius: 20px;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.flight-badge.arrival {
  background: rgba(3, 105, 161, 0.12);
  color: var(--color-accent);
}

.flight-badge.departure {
  background: rgba(212, 168, 83, 0.15);
  color: #a07d32;
}

.return-block {
  overflow: hidden;
  max-height: 0;
  opacity: 0;
  transition: max-height 0.4s ease, opacity 0.3s ease, margin 0.3s ease;
  margin: 0;
}

.return-block.visible {
  max-height: 300px;
  opacity: 1;
  margin-bottom: var(--space-md);
}

/* Time select group */
.time-select-group {
  display: flex;
  align-items: center;
  gap: 6px;
}

.time-select {
  flex: 1;
  text-align: center;
  font-family: var(--font-body);
  font-size: 0.95rem;
  padding: 12px 6px;
  background: var(--color-bg);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  -webkit-appearance: none;
  appearance: none;
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' fill='%2364748B'%3E%3Cpath d='M0 0l5 6 5-6z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 8px center;
  padding-right: 28px;
}

.time-select:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(3, 105, 161, 0.12);
}

.time-sep {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-text-secondary);
  line-height: 1;
  flex-shrink: 0;
}

/* Price input group */
.price-input-group {
  position: relative;
  display: flex;
  align-items: center;
}

.price-currency {
  position: absolute;
  left: 14px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  pointer-events: none;
  z-index: 1;
}

.price-input-group input {
  padding-left: 30px;
}

/* Form actions */
.form-actions {
  margin-top: var(--space-lg);
  padding-top: var(--space-lg);
  border-top: 2px solid var(--color-muted);
}

.form-actions-row {
  display: flex;
  gap: var(--space-md);
}

.btn-flex {
  flex: 1;
}

.btn-gold {
  background: transparent;
  color: #a07d32;
  border: 2px solid var(--color-gold);
}
.btn-gold:hover {
  background: var(--color-gold);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(212, 168, 83, 0.3);
}
.btn-gold:active {
  transform: translateY(0);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 600px) {
  .login-card {
    padding: var(--space-xl) var(--space-lg);
    border-radius: var(--radius-lg);
  }

  .login-title {
    font-size: 1.5rem;
  }

  .form-header {
    padding: var(--space-sm) var(--space-md);
  }
  .header-title {
    font-size: 0.95rem;
  }
  .header-label {
    font-size: 0.65rem;
  }

  .form-container {
    padding: var(--space-md);
  }

  form {
    padding: var(--space-md);
  }

  .form-card-header {
    padding: var(--space-md) var(--space-lg);
  }
  .form-card-header h2 {
    font-size: 1.2rem;
  }

  .form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .form-row-4 {
    grid-template-columns: 1fr;
  }

  .input-group-price {
    max-width: 100%;
  }

  .toggle-group {
    flex-direction: column;
  }

  .toggle-btn {
    padding: 12px 14px;
  }

  .btn-lg {
    padding: 14px 20px;
    font-size: 0.95rem;
  }

  .form-actions-row {
    flex-direction: row;
    gap: var(--space-sm);
  }
  .btn-flex {
    min-width: 0;
  }
}

@media (min-width: 601px) and (max-width: 900px) {
  .form-row-4 {
    grid-template-columns: 1fr 1fr;
  }
  .form-row-4 .input-group:last-child {
    grid-column: span 2;
  }
}

/* ============================================
   GUEST LIST (multi-passenger)
   ============================================ */
#guest-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.guest-entry {
  background: var(--color-bg);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-sm) var(--space-md);
  transition: border-color var(--transition-fast);
}

.guest-entry:first-child .btn-remove-guest {
  display: none;
}

.guest-entry-row {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: var(--space-sm);
  align-items: end;
}

.guest-entry-row .input-group {
  margin-bottom: 0;
}

.btn-remove-guest {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  background: transparent;
  border: 1.5px solid var(--color-error);
  border-radius: var(--radius-sm);
  color: var(--color-error);
  cursor: pointer;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.btn-remove-guest:hover {
  background: var(--color-error);
  color: #fff;
}

.btn-add-guest {
  width: 100%;
  margin-top: var(--space-xs);
  padding: 10px;
  font-size: 0.85rem;
  background: transparent;
  border: 2px dashed var(--color-border);
  color: var(--color-text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.btn-add-guest:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: rgba(3, 105, 161, 0.04);
}

/* Loading spinner animation */
@keyframes spin {
  to { transform: rotate(360deg); }
}

.btn-loader svg {
  animation: spin 0.8s linear infinite;
}

.btn.loading .btn-text {
  visibility: hidden;
}
.btn.loading .btn-loader {
  display: flex !important;
  position: absolute;
}