/* ═══════════════════════════════════════════════════════
   ORTAK KASA — Design System & Global Styles
   ═══════════════════════════════════════════════════════ */

/* ─── CSS Custom Properties ─── */
:root {
  /* Colors — Dark Theme */
  --bg-primary: #06060f;
  --bg-secondary: #0c0c1d;
  --bg-card: rgba(255, 255, 255, 0.04);
  --bg-card-hover: rgba(255, 255, 255, 0.07);
  --bg-card-solid: #12122a;

  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-medium: rgba(255, 255, 255, 0.12);
  --border-strong: rgba(255, 255, 255, 0.2);

  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-inverse: #0f172a;

  /* Accent Gradient */
  --accent-start: #8b5cf6;
  --accent-end: #3b82f6;
  --accent-solid: #7c3aed;
  --accent-light: rgba(139, 92, 246, 0.15);
  --accent-glow: rgba(139, 92, 246, 0.3);

  /* Status */
  --success: #10b981;
  --success-light: rgba(16, 185, 129, 0.15);
  --danger: #ef4444;
  --danger-light: rgba(239, 68, 68, 0.15);
  --warning: #f59e0b;
  --warning-light: rgba(245, 158, 11, 0.15);

  /* Typography */
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-heading: 'Outfit', 'Inter', sans-serif;

  --fs-xs: 0.75rem;
  --fs-sm: 0.875rem;
  --fs-base: 1rem;
  --fs-lg: 1.125rem;
  --fs-xl: 1.25rem;
  --fs-2xl: 1.5rem;
  --fs-3xl: 2rem;
  --fs-4xl: 2.5rem;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 0.75rem;
  --space-base: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-full: 999px;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 20px var(--accent-glow);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
  --transition-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  font-size: 16px;
  /* Prevent double-tap zoom on mobile */
  touch-action: manipulation;
}

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

/* Animated background */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 600px 600px at 15% 85%, rgba(139, 92, 246, 0.12), transparent),
    radial-gradient(ellipse 500px 500px at 85% 15%, rgba(59, 130, 246, 0.1), transparent),
    radial-gradient(ellipse 400px 400px at 50% 50%, rgba(139, 92, 246, 0.05), transparent);
  z-index: -1;
  animation: bgPulse 20s ease-in-out infinite alternate;
  pointer-events: none;
}

@keyframes bgPulse {
  0% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.7; transform: scale(1.05); }
  100% { opacity: 1; transform: scale(1); }
}

input, button, textarea, select {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  /* Prevent iOS auto-zoom on input focus — minimum 16px */
  touch-action: manipulation;
}

a {
  color: var(--accent-solid);
  text-decoration: none;
}

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

ul, ol {
  list-style: none;
}

/* ─── Typography ─── */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
}

/* ─── App Layout ─── */
#app {
  max-width: 520px;
  margin: 0 auto;
  padding: 0 var(--space-base);
  padding-bottom: 140px; /* Increased to ensure wizard-nav doesn't block content */
  min-height: 100vh;
}

/* ─── Header ─── */
#app-header {
  text-align: center;
  padding: clamp(0.75rem, 3vw, 2rem) 0 clamp(0.5rem, 2vw, 1.5rem);
}

.header-content {
  animation: fadeInDown 600ms ease-out;
}

.logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
}

.logo-icon {
  font-size: clamp(1.5rem, 5vw, 2rem);
  filter: drop-shadow(0 0 8px rgba(139, 92, 246, 0.5));
  animation: logoFloat 3s ease-in-out infinite;
}

@keyframes logoFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-4px); }
}

.logo h1 {
  font-size: clamp(1.5rem, 5vw, 2rem);
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent-start), var(--accent-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.header-subtitle {
  color: var(--text-secondary);
  font-size: var(--fs-sm);
  margin-top: 2px;
  letter-spacing: 0.02em;
}

/* ─── Glass Card ─── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  margin-bottom: var(--space-base);
}

.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  margin-bottom: var(--space-base);
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.glass-card:hover {
  border-color: var(--border-medium);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-base);
}

.card-title {
  font-size: var(--fs-lg);
  font-weight: 600;
}

/* ─── Badge ─── */
.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-full);
  font-size: var(--fs-xs);
  font-weight: 600;
  background: var(--accent-light);
  color: var(--accent-start);
  letter-spacing: 0.02em;
}

/* ─── Input ─── */
.input-label {
  display: block;
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: var(--space-sm);
}

.input-group {
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 0 var(--space-base);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  overflow: hidden;
}

.input-group:focus-within {
  border-color: var(--accent-solid);
  box-shadow: 0 0 0 3px var(--accent-light);
}

.input-icon {
  font-size: var(--fs-lg);
  margin-right: var(--space-sm);
  flex-shrink: 0;
}

.input-field {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  padding: var(--space-md) 0;
  color: var(--text-primary);
  /* Minimum 16px to prevent iOS auto-zoom on focus */
  font-size: max(var(--fs-base), 16px);
  min-width: 0;
}

.input-field::placeholder {
  color: var(--text-muted);
}

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

/* ─── Buttons ─── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-lg);
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
  letter-spacing: 0.01em;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0);
  transition: background var(--transition-fast);
}

.btn:hover::after {
  background: rgba(255, 255, 255, 0.1);
}

.btn:active {
  transform: scale(0.97);
}

.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
}

.btn:disabled::after {
  display: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-start), var(--accent-end));
  color: white;
  box-shadow: var(--shadow-sm), 0 0 16px rgba(139, 92, 246, 0.2);
}

.btn-primary:hover {
  box-shadow: var(--shadow-md), 0 0 24px rgba(139, 92, 246, 0.35);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(0) scale(0.97);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-medium);
}

.btn-outline:hover {
  border-color: var(--accent-solid);
  color: var(--accent-start);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
}

.btn-ghost:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

.btn-danger {
  background: var(--danger-light);
  color: var(--danger);
  border: 1px solid rgba(239, 68, 68, 0.2);
}

.btn-danger:hover {
  background: rgba(239, 68, 68, 0.25);
  border-color: rgba(239, 68, 68, 0.4);
}

.btn-success {
  background: linear-gradient(135deg, var(--success), #059669);
  color: white;
}

.btn-lg {
  padding: var(--space-base) var(--space-xl);
  font-size: var(--fs-base);
  border-radius: var(--radius-md);
}

.btn-sm {
  padding: var(--space-xs) var(--space-md);
  font-size: var(--fs-xs);
}

.btn-full {
  width: 100%;
}

.btn-icon {
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: var(--radius-md);
  font-size: var(--fs-xl);
  flex-shrink: 0;
}

.btn-icon-left {
  font-size: var(--fs-xl);
  line-height: 1;
}

/* ─── Modal ─── */
.modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-base);
  padding-top: env(safe-area-inset-top, var(--space-base));
  padding-bottom: env(safe-area-inset-bottom, var(--space-base));
  transition: opacity var(--transition-base);
}

.modal.hidden {
  opacity: 0;
  pointer-events: none;
}

.modal.hidden .modal-content {
  transform: translateY(20px);
}

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  cursor: pointer;
}

.modal-content {
  position: relative;
  width: 100%;
  max-width: 480px;
  max-height: 85vh;
  overflow-y: auto;
  background: var(--bg-card-solid);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-xl) var(--radius-xl) var(--radius-lg) var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-lg);
  transition: transform var(--transition-base);
  z-index: 1;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-lg);
}

.modal-title {
  font-size: var(--fs-xl);
  font-weight: 700;
}

.modal-close {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: var(--fs-base);
}

.modal-close:hover {
  background: var(--danger-light);
  color: var(--danger);
  border-color: rgba(239, 68, 68, 0.3);
}

.modal-body {
  margin-bottom: var(--space-base);
}

.modal-footer-actions {
  display: flex;
  gap: var(--space-base);
  justify-content: space-between;
  margin-top: var(--space-lg);
}

/* ─── Tabs ─── */
.modal-tabs {
  display: flex;
  gap: var(--space-xs);
  margin-bottom: var(--space-lg);
  background: rgba(255, 255, 255, 0.03);
  border-radius: var(--radius-md);
  padding: var(--space-xs);
  border: 1px solid var(--border-subtle);
}

.tab-btn {
  flex: 1;
  padding: var(--space-md) var(--space-sm);
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: var(--fs-xs);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.tab-btn.active {
  background: linear-gradient(135deg, var(--accent-start), var(--accent-end));
  color: white;
  box-shadow: var(--shadow-sm);
}

.tab-btn:not(.active):hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
  animation: fadeIn 300ms ease-out;
}

/* ─── Upload Area ─── */
.upload-area {
  border: 2px dashed var(--border-medium);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl) var(--space-lg);
  text-align: center;
  transition: border-color var(--transition-fast), background var(--transition-fast);
  cursor: pointer;
}

.upload-area:hover {
  border-color: var(--accent-solid);
  background: var(--accent-light);
}

.upload-area.drag-over {
  border-color: var(--accent-solid);
  background: var(--accent-light);
}

.upload-icon {
  font-size: 3rem;
  margin-bottom: var(--space-base);
}

.upload-text {
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
}

.upload-subtext {
  font-size: var(--fs-sm);
  color: var(--text-muted);
  margin-bottom: var(--space-lg);
}

.file-input {
  display: none;
}

/* Upload buttons container */
.upload-buttons {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
  flex-wrap: wrap;
}

/* ─── Loading State ─── */
.loading-state {
  text-align: center;
  padding: var(--space-2xl) var(--space-lg);
}

.spinner {
  width: 48px;
  height: 48px;
  border: 3px solid var(--border-subtle);
  border-top-color: var(--accent-solid);
  border-radius: 50%;
  margin: 0 auto var(--space-lg);
  animation: spin 800ms linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.loading-text {
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
}

.loading-subtext {
  font-size: var(--fs-sm);
  color: var(--text-muted);
}

/* ─── Review Form ─── */
.review-form {
  animation: fadeIn 300ms ease-out;
}

.review-title {
  font-size: var(--fs-lg);
  font-weight: 700;
  margin-bottom: var(--space-xs);
}

.review-subtitle {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
}

.review-actions {
  display: flex;
  gap: var(--space-base);
  justify-content: space-between;
  margin-top: var(--space-lg);
}

/* ─── Bank Transactions List ─── */
.bank-transactions-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.bank-transaction-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-base);
  transition: border-color var(--transition-fast);
}

.bank-transaction-item.selected {
  border-color: var(--accent-solid);
  background: var(--accent-light);
}

.bank-transaction-item .checkbox-custom {
  flex-shrink: 0;
}

.bank-transaction-item .transaction-info {
  flex: 1;
  min-width: 0;
}

.bank-transaction-item .transaction-title-input {
  width: 100%;
  background: none;
  border: none;
  outline: none;
  color: var(--text-primary);
  /* Minimum 16px to prevent iOS auto-zoom */
  font-size: max(var(--fs-sm), 16px);
  font-weight: 500;
  padding: 2px 0;
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-fast);
}

.bank-transaction-item .transaction-title-input:focus {
  border-bottom-color: var(--accent-solid);
}

.bank-transaction-item .transaction-amount-input {
  width: 90px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--accent-start);
  /* Minimum 16px to prevent iOS auto-zoom */
  font-size: max(var(--fs-sm), 16px);
  font-weight: 700;
  padding: 4px 8px;
  text-align: right;
  outline: none;
  transition: border-color var(--transition-fast);
}

.bank-transaction-item .transaction-amount-input:focus {
  border-color: var(--accent-solid);
}

/* ─── Checkbox Custom ─── */
.checkbox-wrapper {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  cursor: pointer;
  user-select: none;
}

.checkbox-wrapper input[type="checkbox"] {
  display: none;
}

.checkbox-custom {
  width: 22px;
  height: 22px;
  border: 2px solid var(--border-medium);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  flex-shrink: 0;
  font-size: var(--fs-xs);
  color: transparent;
}

.checkbox-wrapper input[type="checkbox"]:checked + .checkbox-custom {
  background: linear-gradient(135deg, var(--accent-start), var(--accent-end));
  border-color: var(--accent-solid);
  color: white;
}

.checkbox-label {
  font-size: var(--fs-sm);
  font-weight: 500;
}

/* ─── Empty State ─── */
.empty-state {
  text-align: center;
  padding: var(--space-2xl) var(--space-lg);
  animation: fadeIn 400ms ease-out;
}

.empty-icon {
  font-size: 3.5rem;
  margin-bottom: var(--space-base);
  opacity: 0.6;
}

.empty-text {
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: var(--space-xs);
}

.empty-subtext {
  font-size: var(--fs-sm);
  color: var(--text-muted);
}

/* ─── Toast Notifications ─── */
.toast-container {
  position: fixed;
  top: var(--space-lg);
  left: 50%;
  transform: translateX(-50%);
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  width: 90%;
  max-width: 400px;
  pointer-events: none;
}

.toast {
  background: var(--bg-card-solid);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-base);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  box-shadow: var(--shadow-lg);
  animation: toastIn 400ms var(--transition-spring);
  pointer-events: all;
  font-size: var(--fs-sm);
  font-weight: 500;
}

.toast.toast-out {
  animation: toastOut 300ms ease-in forwards;
}

.toast-icon {
  font-size: var(--fs-lg);
  flex-shrink: 0;
}

.toast.success { border-color: rgba(16, 185, 129, 0.3); }
.toast.error { border-color: rgba(239, 68, 68, 0.3); }
.toast.info { border-color: rgba(59, 130, 246, 0.3); }

@keyframes toastIn {
  from {
    opacity: 0;
    transform: translateY(-16px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes toastOut {
  to {
    opacity: 0;
    transform: translateY(-16px) scale(0.95);
  }
}

/* ─── Utility Classes ─── */
.hidden {
  display: none !important;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
}

/* ─── Animations ─── */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

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

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

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(24px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-4px); }
  75% { transform: translateX(4px); }
}

/* ─── Scrollbar ─── */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--border-medium);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--border-strong);
}

/* ─── Responsive ─── */
@media (min-width: 768px) {
  .modal-content {
    border-radius: var(--radius-xl);
    max-height: 85vh;
  }
}

/* ─── Responsive ─── */
@media (max-width: 480px) {
  /* Do NOT reduce font-size below 16px — it causes iOS auto-zoom on inputs */

  .tab-btn {
    font-size: 0.75rem;
    padding: var(--space-sm) var(--space-xs);
  }

  .btn {
    padding: var(--space-sm) var(--space-md);
  }

  .btn-lg {
    padding: var(--space-sm) var(--space-lg);
  }

  .card, .glass-card {
    padding: var(--space-md);
  }

  .input-group {
    padding: 0 var(--space-sm);
  }

  .modal-content {
    padding: var(--space-md);
    max-height: 90vh;
  }

  .upload-buttons {
    flex-direction: column;
    align-items: stretch;
  }

  .upload-buttons .btn {
    width: 100%;
  }
}

@media (max-width: 380px) {
  /* Still keep 16px base to prevent iOS zoom */
}