/* =========================================================
   Printing Cost Calculator - Modern UI Styles
   Supports light/dark themes via [data-theme="dark"]
   ========================================================= */

/* -----------------------
   THEME TOKENS
   ----------------------- */

:root {
  /* Brand palette (light theme) */
  --color-navy: #072448;
  --color-teal: #4ed4d2;
  --color-teal-strong: #119290;
  --color-yellow: #ffcb00;
  --color-orange: #f8aa4b;
  --color-coral: #ff6150;

  /* Greys / neutrals */
  --grey-25: #f9fafb;
  --grey-50: #f3f4f6;
  --grey-100: #e5e7eb;
  --grey-200: #d1d5db;
  --grey-300: #9ca3af;
  --grey-400: #6b7280;
  --grey-500: #4b5563;
  --grey-700: #374151;
  --grey-900: #111827;

  /* Core surfaces */
  --bg-primary: var(--grey-50);     /* page background */
  --bg-secondary: #ffffff;          /* main panels */
  --bg-tertiary: #f6f7fb;           /* secondary panels / results wrap */
  --bg-hover: #eef2ff;              /* soft hover for light theme */

  /* Text */
  --text-primary: var(--grey-900);
  --text-secondary: var(--grey-500);
  --text-muted: var(--grey-400);

  /* Borders & shadows */
  --border-color: var(--grey-200);
  --border-light: #edf0f5;
  --shadow-soft: 0 1px 2px rgba(15, 23, 42, 0.08);
  --shadow-strong: 0 8px 16px rgba(15, 23, 42, 0.16);

  /* Header */
  --header-bg: var(--color-navy);
  --header-text: #ffffff;

  /* Inputs */
  --input-border: var(--grey-200);
  --input-bg: #ffffff;
  --input-focus: var(--color-teal-strong);
  --input-placeholder: var(--grey-300);

  /* Accent & feedback */
  --accent: var(--color-teal);
  --accent-strong: var(--color-teal-strong);
  --accent-soft-bg: rgba(78, 212, 210, 0.12);
  --accent-soft-border: rgba(78, 212, 210, 0.7);

  --danger: var(--color-coral);
  --danger-bg-soft: rgba(255, 97, 80, 0.08);
  --warning: var(--color-orange);
  --warning-bg-soft: rgba(248, 170, 75, 0.08);
  --info: var(--color-teal);
  --info-bg-soft: rgba(78, 212, 210, 0.08);

  /* Savings visuals */
  --savings-positive-bg: #e0fbe5;
  --savings-positive-border: #16a34a;
  --savings-negative-bg: #ffe4e1;
  --savings-negative-border: #ef4444;
  --savings-neutral-bg: #e5e7eb;
  --savings-neutral-border: #6b7280;
  --savings-explanation-color: #4b5563;
  --savings-total-text: #0f766e;

  /* Radii & spacing */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 0.75rem;
  --space-lg: 1rem;
  --space-xl: 1.5rem;

  /* Transitions */
  --transition-fast: 0.14s ease-out;
  --transition-med: 0.18s ease-out;
}

/* Dark theme overrides */
[data-theme="dark"] {
  --bg-primary: #050816;
  --bg-secondary: #101827;
  --bg-tertiary: #111827;
  --bg-hover: #1f2937;

  --text-primary: #e5e7eb;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;

  --border-color: #374151;
  --border-light: #1f2937;

  --header-bg: #050816;
  --header-text: #e5e7eb;

  --input-border: #4b5563;
  --input-bg: #0b1220;
  --input-focus: #38bdf8;
  --input-placeholder: #6b7280;

  --accent: #4ed4d2;
  --accent-strong: #22c1c1;
  --accent-soft-bg: rgba(34, 193, 193, 0.16);
  --accent-soft-border: rgba(148, 246, 246, 0.8);

  --danger-bg-soft: rgba(127, 29, 29, 0.4);
  --warning-bg-soft: rgba(161, 98, 7, 0.4);
  --info-bg-soft: rgba(15, 118, 110, 0.4);

  --savings-positive-bg: #e0fbe5;
  --savings-positive-border: #16a34a;
  --savings-negative-bg: #ffe4e1;
  --savings-negative-border: #ef4444;
  --savings-neutral-bg: #e5e7eb;
  --savings-neutral-border: #6b7280;
  --savings-explanation-color: #4b5563;
  --savings-total-text: #0f766e;
}

/* -----------------------
   GLOBAL & LAYOUT
   ----------------------- */

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

body {
  font-family: "Roboto", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  transition:
    background-color 0.25s ease,
    color 0.25s ease;
}

main {
  padding: 1.5rem 0 2rem;
}

.container {
  width: 100%;
  max-width: 1440px;
  padding: 0 1.5rem;
  margin: 0 auto;
}

/* -----------------------
   HEADER & NAV
   ----------------------- */

header {
  background: var(--header-bg);
  color: var(--header-text);
  padding: 0.9rem 0;
  box-shadow: 0 2px 4px rgba(15, 23, 42, 0.4);
}

header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

header h1 {
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

nav {
  display: flex;
  align-items: center;
  gap: 1rem;
}

nav a {
  color: var(--header-text);
  text-decoration: none;
  padding: 0.45rem 0.9rem;
  border-radius: 999px;
  font-size: 0.92rem;
  font-weight: 500;
  opacity: 0.9;
  transition:
    background-color var(--transition-med),
    opacity var(--transition-fast),
    transform var(--transition-fast);
}

nav a:hover {
  background-color: rgba(255, 255, 255, 0.12);
  opacity: 1;
  transform: translateY(-1px);
}

/* Header utilities */

.user-info {
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.85rem;
}

.logout-btn {
  background: var(--danger);
  border: none;
  color: #fff;
  padding: 0.45rem 0.9rem;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition:
    background-color var(--transition-med),
    box-shadow var(--transition-fast),
    transform var(--transition-fast);
}

.logout-btn:hover {
  background: #e6393a;
  box-shadow: 0 4px 10px rgba(220, 53, 69, 0.45);
  transform: translateY(-1px);
}

/* Lang + theme toggles */

.lang-toggle {
  display: inline-flex;
  align-items: center;
  background: rgba(15, 23, 42, 0.45);
  border-radius: 999px;
  padding: 0.15rem;
  gap: 0.2rem;
}

.lang-btn {
  border: none;
  outline: none;
  background: transparent;
  color: var(--header-text);
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  opacity: 0.7;
  transition:
    background-color var(--transition-med),
    opacity var(--transition-fast);
}

.lang-btn:hover {
  background: rgba(255, 255, 255, 0.16);
  opacity: 1;
}

.lang-btn.active {
  background: rgba(255, 255, 255, 0.24);
  opacity: 1;
}

.theme-toggle {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.45);
  color: var(--header-text);
  border-radius: 999px;
  padding: 0.35rem 0.8rem;
  font-size: 0.85rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition:
    background-color var(--transition-med),
    border-color var(--transition-med),
    transform var(--transition-fast);
}

.theme-toggle:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.75);
  transform: translateY(-1px);
}

/* User menu */

.user-menu {
  position: relative;
}

.user-menu-toggle {
  background: rgba(15, 23, 42, 0.5);
  color: var(--header-text);
  border-radius: 999px;
  border: none;
  padding: 0.35rem 0.9rem;
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition:
    background-color var(--transition-med),
    transform var(--transition-fast);
}

.user-menu-toggle:hover {
  background: rgba(255, 255, 255, 0.14);
  transform: translateY(-1px);
}

.user-menu-dropdown {
  position: absolute;
  top: calc(100% + 0.4rem);
  right: 0;
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-strong);
  min-width: 240px;
  padding: 0.75rem 0;
  z-index: 40;
}

.user-menu-header {
  padding: 0.5rem 1rem 0.4rem;
  border-bottom: 1px solid var(--border-light);
}

.user-menu-header strong {
  display: block;
  font-size: 0.92rem;
  margin-bottom: 0.1rem;
}

.user-role {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.user-menu-item {
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
  cursor: default;
}

.user-menu-item label {
  display: block;
  margin-bottom: 0.25rem;
}

.user-printer-select {
  width: 100%;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
  padding: 0.4rem 0.5rem;
  font-size: 0.86rem;
}

.user-printer-select:focus {
  outline: none;
  border-color: var(--input-focus);
  box-shadow: 0 0 0 1px rgba(56, 189, 248, 0.5);
}

.user-menu-footer {
  padding: 0.6rem 1rem 0.4rem;
  border-top: 1px solid var(--border-light);
  display: flex;
  justify-content: flex-end;
}

/* -----------------------
   PANELS & SECTIONS
   ----------------------- */

.calculator-container {
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  padding: 1.5rem 1.75rem;
  box-shadow: var(--shadow-soft);

  /* New: keep the calculator comfortably narrow */
  max-width: 1100px;
  margin: 1.25rem auto 0; /* center horizontally */
}

.database-container {
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  padding: 1.5rem 1.75rem;
  box-shadow: var(--shadow-soft);
  margin-top: 1.5rem;
}


h2 {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

h3 {
  font-size: 1.1rem;
  font-weight: 600;
}

/* Sections inside calculator / DB pages */

.db-section {
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  padding: 1rem 1.1rem 1.1rem;
  margin-bottom: 1rem;
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.section-header h3 {
  margin: 0;
  font-size: 1rem;
}

/* -----------------------
   FORMS
   ----------------------- */

.calculator-form {
  margin-bottom: 1.5rem;
}

#dynamic_fields {
  margin-top: 0.75rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.9rem 1rem;
}

.form-row-dimensions {
  grid-template-columns: minmax(120px, 1.2fr) 1fr auto 1fr;
}

.swap-btn-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  margin-bottom: 0.85rem;
}

.swap-btn-container label {
  visibility: hidden;
  margin-bottom: 0.25rem;
  font-size: 0.9rem;
}

.btn-swap {
  width: 2.2rem;
  height: 2.2rem;
  border-radius: 50%;
  border: 1px solid var(--input-border);
  background: var(--input-bg);
  color: var(--text-primary);
  font-size: 1.1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
  padding: 0;
  line-height: 1;
}

.btn-swap:hover {
  border-color: var(--input-focus);
  background: var(--bg-hover);
}

@media (max-width: 600px) {
  .form-row-dimensions {
    grid-template-columns: 1fr auto 1fr;
  }
  .form-row-dimensions > .form-group:first-child {
    grid-column: 1 / -1;
  }
}

.form-group {
  margin-bottom: 0.85rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.25rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.55rem 0.65rem;
  font-size: 0.95rem;
  font-family: inherit;
  border-radius: var(--radius-md);
  border: 1px solid var(--input-border);
  background-color: var(--input-bg);
  color: var(--text-primary);
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast),
    background-color var(--transition-fast),
    transform var(--transition-fast);
}

.form-group textarea {
  min-height: 3.5rem;
  resize: vertical;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--input-placeholder);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--input-focus);
  box-shadow: 0 0 0 1px rgba(56, 189, 248, 0.45);
  transform: translateY(-0.5px);
}

/* Checkbox / radio groups */

.checkbox-group {
  margin: 0.25rem 0 0.75rem;
}

.checkbox-group label {
  font-size: 0.9rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.checkbox-group input[type="checkbox"],
.checkbox-group input[type="radio"] {
  width: 1rem;
  height: 1rem;
  border-radius: 0.25rem;
  border: 1px solid var(--input-border);
}

/* Expandable details in results */

.details-expandable,
.finishing-expandable {
  margin-top: 0.5rem;
  border-radius: var(--radius-md);
  border: 1px dashed var(--border-color);
  padding: 0.6rem 0.75rem;
  font-size: 0.9rem;
}

/* Production / finishing detail containers */

#production_details,
#optimized_production_details,
#finishing_details,
#optimized_finishing_details {
  margin-top: 0.5rem;
  display: block; /* stack items */
}

#production_details div,
#optimized_production_details div,
#finishing_details div,
#optimized_finishing_details div {
  font-size: 0.86rem;
  color: var(--text-secondary);
  padding: 0.15rem 0;
  border-bottom: 1px dashed var(--border-light);
}

/* Remove the bottom border on the last item in each group */
#production_details div:last-child,
#optimized_production_details div:last-child,
#finishing_details div:last-child,
#optimized_finishing_details div:last-child {
  border-bottom: none;
}

/* Finishing detail breakdown (for LF operations with itemized costs) */
.finishing-detail {
  font-size: 0.85em;
  color: var(--muted);
  margin-left: 1rem;
}


/* -----------------------
   BUTTONS
   ----------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.45rem 0.9rem;
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  background: var(--border-light);
  color: var(--text-primary);
  transition:
    background-color var(--transition-med),
    border-color var(--transition-med),
    color var(--transition-med),
    box-shadow var(--transition-fast),
    transform var(--transition-fast);
}

.btn-sm {
  padding: 0.3rem 0.6rem;
  font-size: 0.8rem;
}

.btn-primary {
  background: var(--accent);
  border-color: var(--accent-strong);
  color: #042f32;
}

.btn-primary:hover {
  background: var(--accent-strong);
  border-color: var(--accent-strong);
  box-shadow: 0 6px 14px rgba(17, 146, 144, 0.35);
  transform: translateY(-1px);
}

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

.btn-secondary:hover {
  background: var(--bg-hover);
  border-color: var(--accent);
  color: var(--text-primary);
}

.btn-success {
  background: #16a34a;
  border-color: #15803d;
  color: #f9fafb;
}

.btn-success:hover {
  background: #15803d;
  border-color: #15803d;
  box-shadow: 0 6px 14px rgba(34, 197, 94, 0.35);
  transform: translateY(-1px);
}

.btn-danger {
  background: var(--danger);
  border-color: #dc2626;
  color: #fff;
}

.btn-danger:hover {
  background: #e11d48;
  border-color: #be123c;
  box-shadow: 0 6px 14px rgba(248, 113, 113, 0.45);
  transform: translateY(-1px);
}

.btn:disabled {
  opacity: 0.55;
  cursor: default;
  box-shadow: none;
  transform: none;
}

/* -----------------------
   BADGES
   ----------------------- */

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.1rem 0.45rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  border: 1px solid transparent;
}

.badge-calc {
  background: var(--accent-soft-bg);
  border-color: var(--accent-soft-border);
  color: var(--accent-strong);
}

.badge-admin {
  background: rgba(248, 170, 75, 0.16);
  border-color: var(--color-orange);
  color: #92400e;
}

.badge-editor {
  background: rgba(78, 212, 210, 0.16);
  border-color: var(--accent);
  color: #0f766e;
}

.badge-user {
  background: rgba(148, 163, 184, 0.2);
  border-color: #9ca3af;
  color: #475569;
}

.badge-active {
  background: rgba(22, 163, 74, 0.12);
  border-color: #22c55e;
  color: #166534;
}

.badge-inactive {
  background: rgba(148, 163, 184, 0.16);
  border-color: #9ca3af;
  color: #475569;
}

.badge-custom {
  background: rgba(234, 179, 8, 0.12);
  border-color: #facc15;
  color: #854d0e;
}

.badge-oversized {
  background: rgba(239, 68, 68, 0.1);
  border-color: #fb7185;
  color: #b91c1c;
}

.badge-sra1,
.badge-sra2,
.badge-sra3,
.badge-sra4 {
  background: rgba(15, 23, 42, 0.04);
  border-color: rgba(15, 23, 42, 0.16);
  color: var(--text-secondary);
}

/* -----------------------
   RESULTS & OPTIMIZATION
   ----------------------- */

.results-container {
  margin-top: 1.5rem;
  background: var(--bg-tertiary);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(7, 36, 72, 0.14);
  padding: 1.35rem 1.35rem 1.1rem;
}

.calculation-box {
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  padding: 1rem 1.15rem;
  margin-bottom: 1rem;
  box-shadow: var(--shadow-soft);
}

.calculation-box h4 {
  font-size: 1rem;
  font-weight: 600;
  margin: 0 0 0.6rem;
  padding-bottom: 0.35rem;
  border-bottom: 2px solid rgba(7, 36, 72, 0.18);
}

/* Error box for calculation errors */

.error-box {
  background: var(--savings-negative-bg);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--savings-negative-border);
  padding: 0.8rem 0.9rem;
  margin-bottom: 1rem;
}

.error-box #error_message {
  color: #9f1239;
  font-weight: 600;
  font-size: 0.95rem;
}

/* Price display */

.price-display {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem 2rem;
  margin-bottom: 0.45rem;
  align-items: baseline;
}

.price-item {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.price-value {
  font-weight: 600;
  font-size: 1.02rem;
  color: var(--text-primary);
}

.price-display-large {
  font-size: 1.2rem;
  font-weight: 600;
}

/* Optimization / savings */

.optimization-section {
  margin-top: 0.7rem;
  border-top: 1px dashed var(--border-color);
  padding-top: 0.65rem;
}

.optimization-box h4 {
  border-bottom-color: var(--accent-strong);
}

.optimization-warning {
  margin-top: 0.6rem;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.savings-breakdown {
  margin-top: 0.55rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.45rem 0.9rem;
}

.savings-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.55rem 0.65rem;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  font-size: 0.93rem;
}

.savings-item strong {
  display: block;
  margin-bottom: 0.25rem;
}

.savings-value {
  display: block;
  font-size: 1.14rem;
  font-weight: 600;
  margin-top: 0.1rem;
}

.savings-icon {
  font-size: 1rem;
}

/* Positive / negative / neutral states */

.savings-item.positive {
  background: var(--savings-positive-bg);
  border-color: var(--savings-positive-border);
  color: #166534;
}

.savings-item.negative {
  background: var(--savings-negative-bg);
  border-color: var(--savings-negative-border);
  color: #9f1239;
}

.savings-item.neutral {
  background: var(--savings-neutral-bg);
  border-color: var(--savings-neutral-border);
  color: #374151;
}

.savings-item.total {
  margin-top: 0.4rem;
  background: #e0f2fe;
  border-color: #0ea5e9;
  font-weight: 600;
  color: #075985;
}

.savings-explanation {
  margin-top: 0.55rem;
  font-size: 0.86rem;
  color: var(--savings-explanation-color);
}

/* -----------------------
   TABLES (DB + TIERS)
   ----------------------- */

.table-responsive {
  overflow-x: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
}

/* Shared table base */

.db-table,
.tiers-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.86rem;
}

.db-table thead,
.tiers-table thead {
  background: rgba(7, 36, 72, 0.06);
}

.db-table thead tr th,
.tiers-table thead th {
  text-align: left;
  padding: 0.55rem 0.75rem;
  font-weight: 600;
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
}

/* Sortable headers */

.db-table thead th.sortable {
  cursor: pointer;
  position: relative;
  user-select: none;
}

.db-table thead th.sortable:hover {
  background: rgba(7, 36, 72, 0.09);
}

.db-table thead th.sortable.sort-asc,
.db-table thead th.sortable.sort-desc {
  background: rgba(7, 36, 72, 0.12);
}

.sort-arrow {
  margin-left: 0.25rem;
  font-size: 0.7rem;
  opacity: 0.7;
}

/* Body rows */

.db-table tbody tr,
.tiers-table tbody tr {
  border-bottom: 1px solid var(--border-color);
  transition:
    background-color var(--transition-fast),
    transform var(--transition-fast);
}

.db-table tbody tr:last-child,
.tiers-table tbody tr:last-child {
  border-bottom: none;
}

.db-table tbody tr td,
.tiers-table tbody td {
  padding: 0.5rem 0.75rem;
  vertical-align: middle;
}

.db-table tbody tr td:first-child,
.tiers-table tbody td:first-child {
  font-weight: 500;
  color: var(--text-secondary);
}

.db-table tbody tr:hover,
.tiers-table tbody tr:hover {
  background-color: rgba(148, 163, 184, 0.12);
  transform: translateY(-1px);
}

/* Tiers area */

.tiers-container {
  margin-top: 0.75rem;
}

.tiers-container h4 {
  font-size: 0.95rem;
  margin-bottom: 0.35rem;
}

.tiers-section {
  margin-bottom: 0.75rem;
}

.tiers-section h5 {
  font-size: 0.9rem;
  margin-bottom: 0.25rem;
}

.tiers-section:last-child {
  margin-bottom: 0;
}

.tiers-table .btn-sm {
  font-size: 0.78rem;
  padding: 0.25rem 0.5rem;
}

/* DB table actions */

.db-table .btn-sm {
  font-size: 0.78rem;
  padding: 0.26rem 0.55rem;
}

.db-table .btn-sm:last-child {
  margin-left: 0.2rem;
}

/* -----------------------
   INFO TEXT & FLASH
   ----------------------- */

.info-text {
  margin-bottom: 0.9rem;
  padding: 0.6rem 0.85rem;
  border-radius: var(--radius-md);
  background: var(--info-bg-soft);
  color: var(--text-secondary);
  font-size: 0.86rem;
  border-left: 4px solid var(--info);
}

/* Flask flash messages */

.flash-messages {
  margin-bottom: 1rem;
}

.flash {
  padding: 0.7rem 0.9rem;
  border-radius: var(--radius-md);
  margin-bottom: 0.6rem;
  border-left: 4px solid;
  font-size: 0.9rem;
}

.flash-success {
  background: #e0fbe5;
  color: #166534;
  border-left-color: #22c55e;
}

.flash-error {
  background: #ffe4e6;
  color: #9f1239;
  border-left-color: #e11d48;
}

.flash-warning {
  background: #fef3c7;
  color: #92400e;
  border-left-color: #facc15;
}

.flash-info {
  background: #e0f2fe;
  color: #075985;
  border-left-color: #0ea5e9;
}

/* -----------------------
   MODALS
   ----------------------- */

.modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 1000;
  background-color: rgba(15, 23, 42, 0.75);
}

.modal-content {
  background-color: var(--bg-secondary);
  margin: 6vh auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  padding: 1.25rem 1.5rem;
  width: 90%;
  max-width: 620px;
  max-height: 80vh;
  overflow-y: auto;
  box-shadow: var(--shadow-strong);
}

.modal-actions {
  margin-top: 1rem;
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
}

.close {
  float: right;
  font-size: 1.6rem;
  font-weight: 500;
  color: var(--text-muted);
  cursor: pointer;
}

/* -----------------------
   TOASTS / NOTIFICATIONS
   ----------------------- */

#toast-container {
  position: fixed;
  z-index: 1100;
  top: 4.5rem;
  right: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.toast {
  min-width: 260px;
  max-width: 360px;
  padding: 0.7rem 0.9rem;
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  box-shadow: var(--shadow-soft);
  border-left: 4px solid transparent;
  animation: toast-in 0.18s ease-out;
}

.toast.fade-out {
  opacity: 0;
  transform: translateY(-4px);
  transition:
    opacity 0.18s ease-out,
    transform 0.18s ease-out;
}

.toast.success {
  background: #e0fbe5;
  border-left-color: #22c55e;
}

.toast.error {
  background: #ffe4e6;
  border-left-color: #e11d48;
}

.toast.warning {
  background: #fef3c7;
  border-left-color: #facc15;
}

.toast.info {
  background: #e0f2fe;
  border-left-color: #0ea5e9;
}

.toast-message {
  flex: 1;
  color: var(--text-primary);
}

.toast-close {
  border: none;
  background: transparent;
  font-size: 1rem;
  cursor: pointer;
  color: var(--text-muted);
}

.toast-close:hover {
  color: var(--text-secondary);
}

@keyframes toast-in {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* -----------------------
   LOGIN PAGE
   ----------------------- */

.login-container {
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.login-box {
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  padding: 1.6rem 1.8rem 1.4rem;
  max-width: 420px;
  width: 100%;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-soft);
}

.login-box h2 {
  text-align: center;
  margin-bottom: 1.2rem;
  color: var(--text-primary);
}

.login-info {
  margin-top: 1.3rem;
  padding-top: 0.9rem;
  border-top: 1px solid var(--border-light);
  font-size: 0.86rem;
  color: var(--text-muted);
  text-align: center;
}

/* -----------------------
   FOOTER
   ----------------------- */

footer {
  margin-top: 2rem;
  padding: 1rem 0 1.2rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}

footer p {
  text-align: center;
}

/* -----------------------
   RESPONSIVE TWEAKS
   ----------------------- */

@media (max-width: 960px) {
  header .container {
    flex-wrap: wrap;
    align-items: flex-start;
    gap: 0.9rem;
  }

  nav {
    flex-wrap: wrap;
    justify-content: flex-start;
  }

  .calculator-container,
  .database-container {
    padding: 1.25rem 1.25rem;
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 1rem;
  }

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

  .results-container {
    padding: 1rem 0.9rem;
  }

  .table-responsive {
    border-radius: var(--radius-md);
  }

  #toast-container {
    left: 0.75rem;
    right: 0.75rem;
  }

  .toast {
    width: 100%;
    max-width: none;
  }
}

@media (max-width: 480px) {
  header h1 {
    font-size: 1.05rem;
  }

  nav a {
    padding: 0.35rem 0.7rem;
  }

  .login-box {
    padding: 1.3rem 1.2rem 1.1rem;
  }
}

/* -----------------------
   DATABASE TABS
   ----------------------- */

.db-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 0.5rem;
}

.db-tab {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.6rem 1.2rem;
  font-size: 0.95rem;
  font-weight: 500;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.15s ease;
}

.db-tab:hover {
  background: var(--bg-hover);
  border-color: var(--accent);
  color: var(--text-primary);
}

.db-tab.active {
  background: var(--accent);
  border-color: var(--accent-strong);
  color: #042f32;
}

.db-section[data-tab-content] {
  display: none;
}

.db-section[data-tab-content].visible {
  display: block;
}