/* ============================== */
/* RESET & BASE
/* ============================== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg: #ffffff;
  --bg-secondary: #f8f9fa;
  --bg-card: #ffffff;
  --text: #1a1a2e;
  --text-secondary: #4a4a5a;
  --text-muted: #6b6b7b;
  --border: #e2e4ea;
  --border-hover: #c8cad4;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --accent-light: #eff4ff;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 4px 12px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 4px 24px rgba(0, 0, 0, 0.08);
  --radius: 8px;
  --radius-lg: 12px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
  --transition: 0.2s ease;
  --max-width: 1100px;
  --nav-height: 64px;
}

[data-theme="dark"] {
  --bg: #0f0f1a;
  --bg-secondary: #181825;
  --bg-card: #1e1e30;
  --text: #e8e8f0;
  --text-secondary: #b0b0c0;
  --text-muted: #8888a0;
  --border: #2a2a40;
  --border-hover: #3a3a50;
  --accent: #3b82f6;
  --accent-hover: #60a5fa;
  --accent-light: #1a2740;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 4px 24px rgba(0, 0, 0, 0.4);
}

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeSpeed;
  transition: background var(--transition), color var(--transition);
}

/* Touch responsiveness optimization: eliminate 300ms mobile tap delay */
button,
input,
select,
textarea,
a,
.dropdown-toggle,
.faq-question {
  touch-action: manipulation;
}

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

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

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

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

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

/* ============================== */
/* NAVBAR
/* ============================== */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  height: var(--nav-height);
  display: flex;
  align-items: center;
  transition: background var(--transition), border var(--transition);
}

.nav-container {
  max-width: var(--max-width);
  width: 100%;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text);
  letter-spacing: -0.02em;
}

.nav-logo:hover {
  color: var(--accent);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--text);
  border-radius: var(--radius);
  min-width: 44px;
  min-height: 44px;
}

.nav-toggle:hover {
  background: var(--bg-secondary);
}

.hamburger {
  display: block;
  width: 24px;
  height: 2px;
  background: currentColor;
  position: relative;
  transition: background 0.2s;
}

.hamburger::before,
.hamburger::after {
  content: '';
  position: absolute;
  width: 24px;
  height: 2px;
  background: currentColor;
  left: 0;
  transition: transform 0.2s, top 0.2s;
}

.hamburger::before {
  top: -6px;
}

.hamburger::after {
  top: 6px;
}

.nav-toggle[aria-expanded="true"] .hamburger {
  background: transparent;
}

.nav-toggle[aria-expanded="true"] .hamburger::before {
  transform: rotate(45deg);
  top: 0;
}

.nav-toggle[aria-expanded="true"] .hamburger::after {
  transform: rotate(-45deg);
  top: 0;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
}

.nav-menu li {
  display: inline-block;
}

.nav-menu a {
  display: inline-block;
  padding: 8px 16px;
  color: var(--text-secondary);
  font-size: 0.9rem;
  border-radius: var(--radius);
  transition: background var(--transition), color var(--transition);
}

.nav-menu a:hover {
  background: var(--bg-secondary);
  color: var(--text);
}

.nav-menu a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.nav-theme-item {
  margin-left: 4px;
}

.theme-toggle {
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  border-radius: var(--radius);
  color: var(--text-secondary);
  font-size: 1.1rem;
  min-width: 44px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition), color var(--transition);
}

.theme-toggle:hover {
  background: var(--bg-secondary);
  color: var(--text);
}

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

/* ============================== */
/* HERO
/* ============================== */
.hero {
  padding: 48px 0 32px;
  text-align: center;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  transition: background var(--transition), border var(--transition);
}

.hero h1 {
  font-size: 2.8rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 8px;
  background: linear-gradient(135deg, var(--accent), #7c3aed);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 16px;
}

.hero-badge {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.hero-badge span {
  padding: 4px 0;
}

.hero-badge span:first-child {
  color: #16a34a;
  font-weight: 500;
}

.hero-cta {
  display: inline-block;
  margin-top: 20px;
  padding: 12px 32px;
  background: var(--accent);
  color: #fff;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 1rem;
  transition: background var(--transition), transform 0.15s;
}

.hero-cta:hover {
  background: var(--accent-hover);
  color: #fff;
  transform: translateY(-1px);
}

/* ============================== */
/* GENERATOR
/* ============================== */
.generator {
  padding: 40px 0 24px;
}

.generator h2 {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

.invoice-form {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.form-section {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px 24px 24px;
  background: var(--bg-card);
  transition: background var(--transition), border var(--transition);
}

.form-section legend {
  font-weight: 600;
  font-size: 1.05rem;
  padding: 0 8px;
  color: var(--text-secondary);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px 20px;
  margin-top: 12px;
}

.form-row:first-of-type {
  margin-top: 4px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.form-group.full-width {
  grid-column: 1 / -1;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 1rem;
  font-family: inherit;
  background: var(--bg);
  color: var(--text);
  transition: border var(--transition), background var(--transition), color var(--transition);
  width: 100%;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

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

.form-group textarea {
  resize: vertical;
  min-height: 60px;
}

.form-group input[type="file"] {
  display: none;
}

/* Logo Upload */
.logo-upload-group .logo-upload-wrapper {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 2px;
}

.logo-upload-btn {
  padding: 8px 18px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.9rem;
  cursor: pointer;
  color: var(--text);
  transition: background var(--transition), border var(--transition);
}

.logo-upload-btn:hover {
  background: var(--border);
}

.logo-remove-btn {
  padding: 8px 16px;
  background: #fee2e2;
  border: 1px solid #fca5a5;
  border-radius: var(--radius);
  font-size: 0.85rem;
  cursor: pointer;
  color: #991b1b;
  transition: background var(--transition);
}

.logo-remove-btn:hover {
  background: #fecaca;
}

.logo-preview {
  display: flex;
  align-items: center;
  margin-left: 4px;
}

.logo-preview img {
  max-height: 48px;
  max-width: 120px;
  object-fit: contain;
  border-radius: 4px;
  border: 1px solid var(--border);
  padding: 4px;
  background: #fff;
}

/* Items Table */
.items-table-wrapper {
  overflow-x: auto;
  margin: 4px 0 8px;
}

.items-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.items-table th {
  text-align: left;
  padding: 8px 10px;
  font-weight: 600;
  color: var(--text-secondary);
  border-bottom: 2px solid var(--border);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.items-table td {
  padding: 6px 10px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

.items-table .item-desc {
  min-width: 120px;
}

.items-table .item-qty,
.items-table .item-price,
.items-table .item-total {
  min-width: 80px;
  max-width: 120px;
}

.items-table input {
  width: 100%;
  padding: 6px 8px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.9rem;
  background: var(--bg);
  color: var(--text);
  transition: border var(--transition), background var(--transition);
}

.items-table input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.items-table .item-total {
  font-weight: 500;
  color: var(--text-secondary);
  text-align: right;
}

.remove-item-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: #ef4444;
  font-size: 1.2rem;
  padding: 4px 8px;
  border-radius: 4px;
  transition: background var(--transition);
}

.remove-item-btn:hover {
  background: #fee2e2;
}

.add-item-btn {
  padding: 8px 20px;
  background: var(--bg-secondary);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 0.95rem;
  color: var(--text-secondary);
  transition: background var(--transition), border var(--transition);
}

.add-item-btn:hover {
  background: var(--border);
  border-color: var(--border-hover);
}

/* Discount Input */
.discount-input-wrapper {
  display: flex;
  gap: 6px;
}

.discount-input-wrapper input {
  flex: 1;
  min-width: 0;
}

.discount-input-wrapper select {
  width: auto;
  padding: 10px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  color: var(--text);
  font-size: 1rem;
}

/* Form Actions */
.form-actions {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  padding-top: 4px;
}

.reset-btn {
  padding: 10px 24px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.95rem;
  cursor: pointer;
  color: var(--text);
  transition: background var(--transition), border var(--transition);
}

.reset-btn:hover {
  background: #fee2e2;
  border-color: #fca5a5;
  color: #991b1b;
}

/* ============================== */
/* ACTIONS
/* ============================== */
.actions {
  padding: 8px 0 20px;
}

.actions-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

.action-btn {
  padding: 12px 28px;
  border: none;
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition), transform 0.15s;
}

.action-btn:hover {
  transform: translateY(-1px);
}

.action-btn.primary {
  background: var(--accent);
  color: #fff;
}

.action-btn.primary:hover {
  background: var(--accent-hover);
}

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

.action-btn.secondary:hover {
  background: var(--border);
}

/* ============================== */
/* PREVIEW
/* ============================== */
.preview {
  padding: 16px 0 40px;
}

.preview h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.preview-wrapper {
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  padding: 24px;
  border: 1px solid var(--border);
  transition: background var(--transition), border var(--transition);
  overflow-x: auto;
}

.invoice-document {
  max-width: 794px;
  margin: 0 auto;
  background: #fff;
  color: #1a1a2e;
  padding: 48px 56px;
  border-radius: 8px;
  box-shadow: var(--shadow-lg);
  font-family: 'Helvetica', 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.5;
  min-height: 400px;
}

/* Invoice Document Styles */
.invoice-document .inv-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 28px;
  flex-wrap: wrap;
  gap: 16px;
}

.invoice-document .inv-title {
  font-size: 2rem;
  font-weight: 700;
  color: #1a1a2e;
  letter-spacing: -0.02em;
}

.invoice-document .inv-logo {
  max-height: 56px;
  max-width: 160px;
  object-fit: contain;
}

.invoice-document .inv-meta-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px 32px;
  margin-bottom: 28px;
  font-size: 0.9rem;
}

.invoice-document .inv-meta-item {
  display: flex;
  flex-direction: column;
}

.invoice-document .inv-meta-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #6b6b7b;
  font-weight: 600;
}

.invoice-document .inv-meta-value {
  font-weight: 500;
}

.invoice-document .inv-parties {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 28px;
  font-size: 0.9rem;
}

.invoice-document .inv-party h4 {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #6b6b7b;
  margin-bottom: 4px;
  font-weight: 600;
}

.invoice-document .inv-party p {
  margin: 0;
  line-height: 1.5;
}

.invoice-document .inv-party .party-name {
  font-weight: 600;
}

.invoice-document .inv-items-table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0 24px;
  font-size: 0.9rem;
}

.invoice-document .inv-items-table th {
  text-align: left;
  padding: 8px 10px;
  border-bottom: 2px solid #d1d5db;
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: #4a4a5a;
}

.invoice-document .inv-items-table td {
  padding: 8px 10px;
  border-bottom: 1px solid #e5e7eb;
}

.invoice-document .inv-items-table .amount-cell {
  text-align: right;
}

.invoice-document .inv-summary {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  margin-top: 16px;
  font-size: 0.95rem;
}

.invoice-document .inv-summary-row {
  display: flex;
  justify-content: space-between;
  width: 240px;
  padding: 4px 0;
}

.invoice-document .inv-summary-row.total {
  font-weight: 700;
  font-size: 1.1rem;
  border-top: 2px solid #d1d5db;
  padding-top: 8px;
  margin-top: 4px;
}

.invoice-document .inv-summary-row.balance {
  font-weight: 700;
  font-size: 1.15rem;
  color: #2563eb;
  border-top: 2px solid #2563eb;
  padding-top: 8px;
  margin-top: 4px;
}

.invoice-document .inv-notes {
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid #e5e7eb;
  font-size: 0.85rem;
  color: #4a4a5a;
}

.invoice-document .inv-notes h4 {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #6b6b7b;
  margin-bottom: 4px;
}

/* ============================== */
/* SEO CONTENT
/* ============================== */
.seo-content {
  padding: 40px 0 16px;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  transition: background var(--transition), border var(--transition);
  content-visibility: auto;
  contain-intrinsic-size: 1px 700px;
}

.seo-content h2 {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.seo-content h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 28px 0 12px;
}

.seo-content p {
  margin-bottom: 16px;
  color: var(--text-secondary);
  font-size: 1.05rem;
}

.seo-content ul,
.seo-content ol {
  margin: 12px 0 20px 24px;
  color: var(--text-secondary);
  font-size: 1.05rem;
}

.seo-content ul li,
.seo-content ol li {
  margin-bottom: 6px;
}

.seo-content strong {
  color: var(--text);
}

/* ============================== */
/* FAQ
/* ============================== */
.faq {
  padding: 40px 0 48px;
  content-visibility: auto;
  contain-intrinsic-size: 1px 600px;
}

.faq h2 {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 28px;
  letter-spacing: -0.02em;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
  max-width: 780px;
  margin: 0 auto;
}

.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border var(--transition);
}

.faq-item:focus-within {
  border-color: var(--accent);
}

.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  background: var(--bg-card);
  border: none;
  font-size: 1rem;
  font-weight: 500;
  color: var(--text);
  cursor: pointer;
  font-family: inherit;
  text-align: left;
  transition: background var(--transition);
}

.faq-question:hover {
  background: var(--bg-secondary);
}

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

.faq-icon {
  font-size: 1.3rem;
  font-weight: 300;
  transition: transform 0.25s ease;
  color: var(--text-muted);
  flex-shrink: 0;
  margin-left: 16px;
}

.faq-question[aria-expanded="true"] .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.3s ease;
  background: var(--bg-secondary);
}

.faq-answer[aria-hidden="false"] {
  max-height: 400px;
  padding: 16px 20px 20px;
}

.faq-answer p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.98rem;
  line-height: 1.6;
}

.faq-answer strong {
  color: var(--text);
}

/* ============================== */
/* FOOTER
/* ============================== */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 40px 0 20px;
  transition: background var(--transition), border var(--transition);
  content-visibility: auto;
  contain-intrinsic-size: 1px 400px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 28px;
}

.footer-brand .footer-logo {
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--text);
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-top: 6px;
}

.footer-brand .footer-tagline {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--accent);
  margin-top: 4px;
}

.footer-nav ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.footer-nav a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  transition: color var(--transition);
}

.footer-nav a:hover {
  color: var(--text);
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ============================== */
/* RESPONSIVE
/* ============================== */
@media (max-width: 820px) {
  .form-row {
    grid-template-columns: 1fr;
  }

  .invoice-document {
    padding: 32px 28px;
  }

  .invoice-document .inv-meta-grid {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .invoice-document .inv-parties {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }
}

@media (max-width: 700px) {
  .nav-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .nav-menu {
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--bg);
    flex-direction: column;
    align-items: stretch;
    padding: 12px 20px 20px;
    border-bottom: 1px solid var(--border);
    gap: 2px;
    display: none;
    box-shadow: var(--shadow-lg);
    transition: background var(--transition), border var(--transition);
  }

  .nav-menu.open {
    display: flex;
  }

  .nav-menu a {
    padding: 12px 16px;
    width: 100%;
  }

  .nav-theme-item {
    margin-left: 0;
    display: flex;
    justify-content: flex-start;
    padding: 4px 0;
  }

  .theme-toggle {
    padding: 12px 16px;
    width: 100%;
    text-align: left;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .hero-badge {
    font-size: 0.8rem;
    gap: 4px;
  }

  .generator h2 {
    font-size: 1.4rem;
  }

  .form-section {
    padding: 16px 16px 20px;
  }

  .invoice-document {
    padding: 24px 18px;
    font-size: 0.85rem;
  }

  .invoice-document .inv-title {
    font-size: 1.5rem;
  }

  .invoice-document .inv-summary-row {
    width: 180px;
  }

  .actions-bar {
    gap: 8px;
  }

  .action-btn {
    padding: 10px 18px;
    font-size: 0.9rem;
    flex: 1 1 auto;
    min-width: 80px;
  }

  .seo-content h2 {
    font-size: 1.4rem;
  }

  .seo-content p,
  .seo-content ul,
  .seo-content ol {
    font-size: 0.98rem;
  }

  .faq h2 {
    font-size: 1.4rem;
  }

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

  .footer-bottom {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 14px;
  }

  .hero {
    padding: 32px 0 24px;
  }

  .hero h1 {
    font-size: 1.7rem;
  }

  .invoice-document {
    padding: 18px 12px;
    font-size: 0.8rem;
  }

  .invoice-document .inv-title {
    font-size: 1.3rem;
  }

  .invoice-document .inv-items-table {
    font-size: 0.8rem;
  }

  .invoice-document .inv-items-table th,
  .invoice-document .inv-items-table td {
    padding: 4px 6px;
  }

  .invoice-document .inv-summary-row {
    width: 150px;
    font-size: 0.85rem;
  }

  .invoice-document .inv-logo {
    max-height: 40px;
    max-width: 120px;
  }
}

/* ============================== */
/* PRINT STYLES
/* ============================== */
@media print {
  body * {
    visibility: hidden;
  }

  .preview-wrapper,
  .preview-wrapper *,
  .invoice-document,
  .invoice-document * {
    visibility: visible !important;
  }

  .preview-wrapper {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: #fff !important;
    padding: 0 !important;
    border: none !important;
    border-radius: 0 !important;
    overflow: visible !important;
  }

  .invoice-document {
    max-width: 100% !important;
    padding: 40px 48px !important;
    box-shadow: none !important;
    border-radius: 0 !important;
    min-height: auto !important;
  }

  .navbar,
  .hero,
  .generator,
  .actions,
  .seo-content,
  .faq,
  .footer {
    display: none !important;
  }

  .invoice-document .inv-summary-row.balance {
    color: #2563eb !important;
  }

  @page {
    margin: 12mm 14mm;
    size: A4;
  }

  .invoice-document .inv-items-table {
    page-break-inside: auto;
  }

  .invoice-document .inv-items-table tr {
    page-break-inside: avoid;
    page-break-after: auto;
  }

  .invoice-document .inv-items-table tbody tr:last-child {
    page-break-after: auto;
  }
}
/* ============================== */
/* MOBILE ITEMS TABLE FIX
/* ============================== */

/* Items Table - Mobile Responsive */
@media (max-width: 700px) {
  .items-table-wrapper {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin: 4px -4px 8px;
    padding: 0 4px;
  }

  .items-table {
    font-size: 0.85rem;
    min-width: 480px;
  }

  .items-table th {
    font-size: 0.75rem;
    padding: 6px 6px;
    white-space: nowrap;
  }

  .items-table td {
    padding: 4px 4px;
  }

  .items-table .item-desc {
    min-width: 100px;
  }

  .items-table .item-qty,
  .items-table .item-price,
  .items-table .item-total {
    min-width: 60px;
    max-width: 90px;
  }

  .items-table input {
    padding: 4px 6px;
    font-size: 0.85rem;
    min-height: 36px;
  }

  .remove-item-btn {
    font-size: 1rem;
    padding: 4px 6px;
    min-height: 36px;
    min-width: 32px;
  }

  .add-item-btn {
    padding: 10px 16px;
    font-size: 0.9rem;
    width: 100%;
  }
}

@media (max-width: 480px) {
  .items-table {
    font-size: 0.8rem;
    min-width: 380px;
  }

  .items-table .item-desc {
    min-width: 80px;
  }

  .items-table .item-qty,
  .items-table .item-price,
  .items-table .item-total {
    min-width: 50px;
    max-width: 70px;
  }

  .items-table input {
    font-size: 0.8rem;
    padding: 3px 4px;
    min-height: 32px;
  }

  .items-table th {
    font-size: 0.7rem;
    padding: 4px 4px;
  }

  .items-table td {
    padding: 3px 3px;
  }

  .remove-item-btn {
    font-size: 0.9rem;
    padding: 2px 4px;
    min-height: 32px;
    min-width: 28px;
  }
}

/* ============================== */
/* FORM IMPROVEMENTS FOR MOBILE
/* ============================== */

@media (max-width: 700px) {
  .form-section {
    padding: 14px 12px 18px;
  }

  .form-section legend {
    font-size: 0.95rem;
    padding: 0 6px;
  }

  .form-row {
    gap: 12px 12px;
    margin-top: 8px;
  }

  .form-group label {
    font-size: 0.8rem;
  }

  .form-group input,
  .form-group select,
  .form-group textarea {
    padding: 10px 12px;
    font-size: 16px !important;
    /* Prevents iOS zoom */
    min-height: 44px;
  }

  .discount-input-wrapper select {
    padding: 10px 8px;
    font-size: 16px !important;
    min-height: 44px;
  }

  .logo-upload-wrapper {
    flex-wrap: wrap;
    gap: 8px;
  }

  .logo-upload-btn,
  .logo-remove-btn {
    padding: 8px 14px;
    font-size: 0.85rem;
    min-height: 40px;
    flex: 1;
    min-width: 80px;
    text-align: center;
  }

  .logo-preview img {
    max-height: 40px;
    max-width: 100px;
  }

  .reset-btn {
    width: 100%;
    justify-content: center;
    padding: 12px 20px;
    font-size: 0.95rem;
    min-height: 44px;
  }

  .form-actions {
    justify-content: stretch;
  }
}

@media (max-width: 480px) {
  .form-section {
    padding: 12px 10px 16px;
    border-radius: 8px;
  }

  .form-row {
    gap: 10px;
  }

  .form-group input,
  .form-group select,
  .form-group textarea {
    padding: 8px 10px;
    font-size: 16px !important;
    min-height: 40px;
    border-radius: 6px;
  }

  .form-group label {
    font-size: 0.78rem;
  }

  .discount-input-wrapper {
    flex-wrap: wrap;
  }

  .discount-input-wrapper input {
    flex: 1;
    min-width: 60px;
  }

  .discount-input-wrapper select {
    width: auto;
    min-width: 50px;
    flex: 0 0 auto;
  }

  .logo-upload-btn,
  .logo-remove-btn {
    padding: 6px 12px;
    font-size: 0.8rem;
    min-height: 36px;
  }
}

/* ============================== */
/* PREVIEW MOBILE IMPROVEMENTS
/* ============================== */

@media (max-width: 700px) {
  .preview-wrapper {
    padding: 12px;
    border-radius: 8px;
  }

  .invoice-document {
    padding: 20px 16px;
    font-size: 0.8rem;
    border-radius: 4px;
  }

  .invoice-document .inv-title {
    font-size: 1.3rem;
  }

  .invoice-document .inv-header {
    margin-bottom: 16px;
    gap: 10px;
  }

  .invoice-document .inv-logo {
    max-height: 40px;
    max-width: 100px;
  }

  .invoice-document .inv-meta-grid {
    grid-template-columns: 1fr 1fr;
    gap: 6px 16px;
    margin-bottom: 16px;
    font-size: 0.8rem;
  }

  .invoice-document .inv-parties {
    grid-template-columns: 1fr;
    gap: 12px;
    margin-bottom: 16px;
    font-size: 0.8rem;
  }

  .invoice-document .inv-party {
    text-align: left !important;
  }

  .invoice-document .inv-items-table {
    font-size: 0.75rem;
    margin: 12px 0 16px;
  }

  .invoice-document .inv-items-table th,
  .invoice-document .inv-items-table td {
    padding: 4px 6px;
  }

  .invoice-document .inv-items-table th {
    font-size: 0.65rem;
  }

  .invoice-document .inv-summary {
    font-size: 0.8rem;
    align-items: stretch;
  }

  .invoice-document .inv-summary-row {
    width: 100%;
    padding: 3px 0;
  }

  .invoice-document .inv-summary-row.total {
    font-size: 0.95rem;
    padding-top: 6px;
    margin-top: 2px;
  }

  .invoice-document .inv-summary-row.balance {
    font-size: 0.95rem;
    padding-top: 6px;
    margin-top: 2px;
  }

  .invoice-document .inv-notes {
    margin-top: 16px;
    padding-top: 12px;
    font-size: 0.75rem;
  }
}

@media (max-width: 480px) {
  .preview-wrapper {
    padding: 8px;
  }

  .invoice-document {
    padding: 14px 10px;
    font-size: 0.7rem;
  }

  .invoice-document .inv-title {
    font-size: 1.1rem;
  }

  .invoice-document .inv-meta-grid {
    grid-template-columns: 1fr;
    gap: 4px;
    font-size: 0.75rem;
  }

  .invoice-document .inv-parties {
    font-size: 0.75rem;
    gap: 10px;
  }

  .invoice-document .inv-items-table {
    font-size: 0.7rem;
  }

  .invoice-document .inv-items-table th,
  .invoice-document .inv-items-table td {
    padding: 3px 4px;
  }

  .invoice-document .inv-summary {
    font-size: 0.75rem;
  }

  .invoice-document .inv-summary-row.total {
    font-size: 0.85rem;
  }

  .invoice-document .inv-summary-row.balance {
    font-size: 0.85rem;
  }
}

/* ============================== */
/* ACTIONS BAR MOBILE
/* ============================== */

@media (max-width: 700px) {
  .actions {
    padding: 4px 0 16px;
  }

  .actions-bar {
    flex-direction: column;
    gap: 8px;
  }

  .action-btn {
    padding: 12px 20px;
    font-size: 0.95rem;
    width: 100%;
    justify-content: center;
    min-height: 48px;
    border-radius: 8px;
  }
}

@media (max-width: 480px) {
  .action-btn {
    padding: 10px 16px;
    font-size: 0.9rem;
    min-height: 44px;
  }
}

/* ============================== */
/* CONTAINER PADDING FIX
/* ============================== */

@media (max-width: 480px) {
  .container {
    padding: 0 12px;
  }
}




/* ============================== */
/* NAVBAR DROPDOWN
/* ============================== */

.nav-dropdown {
  position: relative;
}

.dropdown-toggle {
  cursor: pointer;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 12px 0;
  min-width: 260px;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity 0.2s, transform 0.2s, visibility 0.2s;
  list-style: none;
  z-index: 1000;
}

.nav-dropdown:hover .dropdown-menu,
.nav-dropdown:focus-within .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-category {
  padding: 0 16px;
}

.dropdown-category .category-label {
  display: block;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  padding: 6px 0 4px;
}

.dropdown-tools {
  list-style: none;
  padding: 0;
  margin: 0 0 6px 0;
}

.dropdown-tools li {
  display: block !important;
}

.dropdown-tools a {
  display: block !important;
  padding: 4px 8px !important;
  font-size: 0.85rem !important;
  color: var(--text-secondary) !important;
  border-radius: var(--radius) !important;
  transition: background var(--transition), color var(--transition);
}

.dropdown-tools a:hover {
  background: var(--bg-secondary) !important;
  color: var(--text) !important;
}

.dropdown-tools .coming-soon {
  display: block;
  padding: 4px 8px;
  font-size: 0.85rem;
  color: var(--text-muted);
  opacity: 0.6;
}

.dropdown-divider {
  height: 1px;
  background: var(--border);
  margin: 6px 16px;
  display: block !important;
}

.dropdown-menu .view-all {
  display: block !important;
  padding: 8px 16px !important;
  font-weight: 600;
  color: var(--accent) !important;
  text-align: center;
}

.dropdown-menu .view-all:hover {
  background: var(--bg-secondary) !important;
}

/* ============================== */
/* TOOLS PAGE
/* ============================== */

.tools-hero {
  padding: 48px 0 32px;
  text-align: center;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  transition: background var(--transition), border var(--transition);
}

.tools-hero h1 {
  font-size: 2.8rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 8px;
  background: linear-gradient(135deg, var(--accent), #7c3aed);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.tools-hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.tools-directory-page {
  padding: 40px 0 60px;
}

.tools-grid {
  display: flex;
  flex-direction: column;
  gap: 32px;
  max-width: 900px;
  margin: 0 auto;
}

.tool-category {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px 28px;
  transition: background var(--transition), border var(--transition);
}

.tool-category h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 4px;
}

.tool-category .category-desc {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 16px;
}

.tool-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

.tool-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: background var(--transition), border var(--transition), transform 0.2s, box-shadow 0.2s;
}

.tool-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.tool-card .tool-icon {
  font-size: 2rem;
  flex-shrink: 0;
}

.tool-card .tool-info {
  flex: 1;
  min-width: 0;
}

.tool-card .tool-info h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 2px;
}

.tool-card .tool-info p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 4px;
  line-height: 1.4;
}

.tool-card .tool-link {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition);
}

.tool-card .tool-link:hover {
  color: var(--accent-hover);
  text-decoration: underline;
}

.tool-card.coming-soon {
  opacity: 0.7;
}

.tool-card.coming-soon:hover {
  transform: none;
  box-shadow: none;
}

.coming-soon-badge {
  display: inline-block;
  padding: 2px 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ============================== */
/* RESPONSIVE - DROPDOWN
/* ============================== */

@media (max-width: 700px) {
  .nav-dropdown {
    position: static;
  }

  .dropdown-menu {
    position: static;
    box-shadow: none;
    border: none;
    border-left: 2px solid var(--border);
    margin: 4px 0 4px 16px;
    padding: 4px 0 4px 12px;
    opacity: 1;
    visibility: visible;
    transform: none;
    display: none;
    background: transparent;
    min-width: auto;
  }

  .nav-dropdown:hover .dropdown-menu,
  .nav-dropdown:focus-within .dropdown-menu {
    display: block;
  }

  .dropdown-category {
    padding: 0;
  }

  .dropdown-tools a {
    padding: 6px 8px !important;
  }

  .dropdown-divider {
    margin: 4px 0;
  }

  .dropdown-menu .view-all {
    padding: 8px 0 !important;
    text-align: left;
  }
}

@media (max-width: 768px) {
  .tools-hero h1 {
    font-size: 2rem;
  }

  .tools-hero-subtitle {
    font-size: 1rem;
  }

  .tools-directory-page {
    padding: 30px 0 40px;
  }

  .tool-category {
    padding: 18px 16px;
  }

  .tool-category h3 {
    font-size: 1rem;
  }

  .tool-cards {
    grid-template-columns: 1fr;
  }

  .tool-card {
    padding: 14px 16px;
  }

  .tool-card .tool-icon {
    font-size: 1.6rem;
  }
}

@media (max-width: 480px) {
  .tools-hero {
    padding: 32px 0 24px;
  }

  .tools-hero h1 {
    font-size: 1.7rem;
  }

  .tool-category {
    padding: 14px 12px;
    border-radius: var(--radius);
  }

  .tool-card {
    padding: 12px 14px;
    gap: 12px;
  }

  .tool-card .tool-icon {
    font-size: 1.4rem;
  }
}

[data-theme="dark"] .tool-card.coming-soon {
  opacity: 0.6;
}

[data-theme="dark"] .coming-soon-badge {
  background: var(--bg-secondary);
}
/* ============================== */
/* NAVBAR DROPDOWN - COMPLETE FIX
/* ============================== */

.nav-dropdown {
  position: relative;
}

.dropdown-toggle {
  cursor: pointer;
  display: inline-block;
  padding: 8px 16px;
  color: var(--text-secondary);
  font-size: 0.9rem;
  border-radius: var(--radius);
  transition: background var(--transition), color var(--transition);
  text-decoration: none;
}

.dropdown-toggle:hover {
  background: var(--bg-secondary);
  color: var(--text);
}

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

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 12px 0;
  min-width: 260px;
  box-shadow: var(--shadow-lg);
  list-style: none;
  z-index: 1000;

  /* Hidden by default */
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity 0.2s, transform 0.2s, visibility 0.2s;
}

/* Desktop: Hover par open */
@media (min-width: 701px) {
  .nav-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
}

/* Mobile: Open class se open */
.dropdown-menu.open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* ============================== */
/* MOBILE DROPDOWN STYLES
/* ============================== */

@media (max-width: 700px) {
  .nav-dropdown {
    position: static;
  }

  .dropdown-toggle {
    padding: 12px 16px;
    width: 100%;
    text-align: left;
    font-size: 1rem;
  }

  .dropdown-menu {
    position: static;
    box-shadow: none;
    border: none;
    border-left: 2px solid var(--border);
    margin: 4px 0 4px 16px;
    padding: 4px 0 4px 12px;
    background: transparent;
    min-width: auto;

    /* Mobile par hidden */
    opacity: 1;
    visibility: visible;
    transform: none;
    display: none;
  }

  .dropdown-menu.open {
    display: block;
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .dropdown-category {
    padding: 0;
  }

  .dropdown-tools a {
    padding: 6px 8px !important;
  }

  .dropdown-divider {
    margin: 4px 0;
  }

  .dropdown-menu .view-all {
    padding: 8px 0 !important;
    text-align: left;
  }
}

/* ============================== */
/* DROPDOWN COMMON STYLES
/* ============================== */

.dropdown-category {
  padding: 0 16px;
}

.dropdown-category .category-label {
  display: block;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  padding: 6px 0 4px;
}

.dropdown-tools {
  list-style: none;
  padding: 0;
  margin: 0 0 6px 0;
}

.dropdown-tools li {
  display: block !important;
}

.dropdown-tools a {
  display: block !important;
  padding: 4px 8px !important;
  font-size: 0.85rem !important;
  color: var(--text-secondary) !important;
  border-radius: var(--radius) !important;
  transition: background var(--transition), color var(--transition);
}

.dropdown-tools a:hover {
  background: var(--bg-secondary) !important;
  color: var(--text) !important;
}

.dropdown-tools .coming-soon {
  display: block;
  padding: 4px 8px;
  font-size: 0.85rem;
  color: var(--text-muted);
  opacity: 0.6;
}

.dropdown-divider {
  height: 1px;
  background: var(--border);
  margin: 6px 16px;
  display: block !important;
}

.dropdown-menu .view-all {
  display: block !important;
  padding: 8px 16px !important;
  font-weight: 600;
  color: var(--accent) !important;
  text-align: center;
}

.dropdown-menu .view-all:hover {
  background: var(--bg-secondary) !important;
}