/* ============================================================
   Invoice Generator – Complete Stylesheet
   Author: Invoice Generator
   Description: Full design system with light/dark mode,
                all component styles, and page-specific CSS.
   ============================================================ */

/* ── Google Fonts preloaded via HTML ── */

/* ════════════════════════════════════════
   1. CSS CUSTOM PROPERTIES (Design Tokens)
   ════════════════════════════════════════ */
:root {
  /* Brand Colors */
  --primary:          #4F46E5;
  --primary-dark:     #3730A3;
  --primary-light:    #818CF8;
  --secondary:        #7C3AED;
  --accent:           #06B6D4;
  --success:          #10B981;
  --warning:          #F59E0B;
  --error:            #EF4444;
  --info:             #3B82F6;

  /* Light Mode Colors */
  --bg:               #F8F9FF;
  --bg-secondary:     #FFFFFF;
  --bg-card:          #FFFFFF;
  --bg-input:         #F1F5F9;
  --text-primary:     #0F172A;
  --text-secondary:   #475569;
  --text-muted:       #94A3B8;
  --border:           #E2E8F0;
  --border-focus:     #4F46E5;
  --shadow-sm:        0 1px 3px rgba(15,23,42,0.08), 0 1px 2px rgba(15,23,42,0.04);
  --shadow:           0 4px 6px rgba(15,23,42,0.07), 0 2px 4px rgba(15,23,42,0.05);
  --shadow-md:        0 10px 15px rgba(15,23,42,0.08), 0 4px 6px rgba(15,23,42,0.04);
  --shadow-lg:        0 20px 25px rgba(15,23,42,0.10), 0 10px 10px rgba(15,23,42,0.04);
  --shadow-xl:        0 25px 50px rgba(15,23,42,0.15);
  --radius-sm:        6px;
  --radius:           12px;
  --radius-lg:        18px;
  --radius-xl:        24px;
  --radius-full:      9999px;

  /* Typography */
  --font-body:        'Inter', sans-serif;
  --font-heading:     'Poppins', sans-serif;
  --font-size-xs:     0.75rem;
  --font-size-sm:     0.875rem;
  --font-size-base:   1rem;
  --font-size-lg:     1.125rem;
  --font-size-xl:     1.25rem;
  --font-size-2xl:    1.5rem;
  --font-size-3xl:    1.875rem;
  --font-size-4xl:    2.25rem;
  --font-size-5xl:    3rem;

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

  /* Layout */
  --container-max:    1280px;
  --header-h:         72px;
  --section-pad:      100px;
}

/* Dark Mode */
[data-theme="dark"] {
  --bg:               #0D1117;
  --bg-secondary:     #161B22;
  --bg-card:          #1C2333;
  --bg-input:         #1C2333;
  --text-primary:     #F0F6FC;
  --text-secondary:   #8B949E;
  --text-muted:       #484F58;
  --border:           #30363D;
  --border-focus:     #818CF8;
  --shadow-sm:        0 1px 3px rgba(0,0,0,0.3), 0 1px 2px rgba(0,0,0,0.2);
  --shadow:           0 4px 6px rgba(0,0,0,0.25), 0 2px 4px rgba(0,0,0,0.18);
  --shadow-md:        0 10px 15px rgba(0,0,0,0.3), 0 4px 6px rgba(0,0,0,0.2);
  --shadow-lg:        0 20px 25px rgba(0,0,0,0.35), 0 10px 10px rgba(0,0,0,0.25);
  --shadow-xl:        0 25px 50px rgba(0,0,0,0.5);
}

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

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

body {
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  color: var(--text-primary);
  background-color: var(--bg);
  line-height: 1.7;
  transition: background-color var(--transition-slow), color var(--transition-slow);
  overflow-x: hidden;
}

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

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

a:hover { color: var(--primary-dark); }

ul, ol { list-style: none; }

button {
  font-family: var(--font-body);
  cursor: pointer;
  border: none;
  background: none;
}

input, textarea, select {
  font-family: var(--font-body);
  font-size: var(--font-size-base);
}

h1,h2,h3,h4,h5,h6 {
  font-family: var(--font-heading);
  line-height: 1.25;
  color: var(--text-primary);
}

/* Skip link for accessibility */
.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  padding: 0.5rem 1rem;
  background: var(--primary);
  color: #fff;
  border-radius: var(--radius-sm);
  z-index: 9999;
  transition: top var(--transition-fast);
}
.skip-link:focus { top: 1rem; }

/* ════════════════════════════════════════
   3. UTILITY CLASSES
   ════════════════════════════════════════ */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section-pad { padding: var(--section-pad) 0; }
.section-pad-sm { padding: 60px 0; }

.text-gradient {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.9rem;
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.badge-primary {
  background: rgba(79,70,229,0.12);
  color: var(--primary);
  border: 1px solid rgba(79,70,229,0.2);
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-header .badge { margin-bottom: 1rem; }

.section-title {
  font-size: clamp(1.75rem, 4vw, var(--font-size-4xl));
  font-weight: 700;
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ════════════════════════════════════════
   4. BUTTONS
   ════════════════════════════════════════ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-base);
  font-weight: 600;
  font-family: var(--font-body);
  transition: all var(--transition);
  border: 2px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.1);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.btn:hover::before { opacity: 1; }

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(79,70,229,0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(79,70,229,0.45);
  color: #ffffff;
}

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

.btn-outline {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}

.btn-outline:hover {
  background: var(--primary);
  color: #ffffff;
  transform: translateY(-2px);
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-primary);
  border-color: var(--border);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.btn-success {
  background: linear-gradient(135deg, var(--success), #059669);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(16,185,129,0.35);
}

.btn-success:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(16,185,129,0.45);
  color: #ffffff;
}

.btn-danger {
  background: linear-gradient(135deg, var(--error), #DC2626);
  color: #ffffff;
}

.btn-danger:hover {
  transform: translateY(-2px);
  color: #ffffff;
}

.btn-sm {
  padding: 0.5rem 1.1rem;
  font-size: var(--font-size-sm);
}

.btn-lg {
  padding: 1rem 2.25rem;
  font-size: var(--font-size-lg);
  border-radius: var(--radius);
}

.btn-icon {
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: var(--radius-sm);
}

.btn-icon-sm {
  width: 32px;
  height: 32px;
  padding: 0;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
}

/* ════════════════════════════════════════
   5. CARDS
   ════════════════════════════════════════ */
.card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  padding: 1.75rem;
  transition: transform var(--transition), box-shadow var(--transition);
  box-shadow: var(--shadow-sm);
}

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

.card-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(79,70,229,0.12), rgba(124,58,237,0.12));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--primary);
  margin-bottom: 1.25rem;
  transition: transform var(--transition);
}

.card:hover .card-icon { transform: scale(1.1) rotate(-5deg); }

.card-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.card-text {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  line-height: 1.6;
}

/* ════════════════════════════════════════
   6. FORMS
   ════════════════════════════════════════ */
.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.4rem;
  letter-spacing: 0.02em;
}

.form-label .required { color: var(--error); margin-left: 2px; }

.form-control {
  width: 100%;
  padding: 0.7rem 1rem;
  background: var(--bg-input);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: var(--font-size-base);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-slow);
  outline: none;
}

.form-control:focus {
  border-color: var(--border-focus);
  background: var(--bg-card);
  box-shadow: 0 0 0 3px rgba(79,70,229,0.15);
}

.form-control::placeholder { color: var(--text-muted); }

.form-control.is-invalid {
  border-color: var(--error);
  box-shadow: 0 0 0 3px rgba(239,68,68,0.12);
}

.invalid-feedback {
  font-size: var(--font-size-xs);
  color: var(--error);
  margin-top: 0.3rem;
  display: none;
}

.form-control.is-invalid ~ .invalid-feedback { display: block; }

textarea.form-control { resize: vertical; min-height: 100px; }

select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2394A3B8' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  padding-right: 2.5rem;
  cursor: pointer;
}

/* ════════════════════════════════════════
   7. HEADER & NAVIGATION
   ════════════════════════════════════════ */
#site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-h);
  z-index: 1000;
  background: rgba(248,249,255,0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: all var(--transition);
}

[data-theme="dark"] #site-header {
  background: rgba(13,17,23,0.85);
}

#site-header.scrolled {
  border-bottom-color: var(--border);
  box-shadow: var(--shadow);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

/* Logo */
.site-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  flex-shrink: 0;
}

.site-logo img {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  object-fit: cover;
}

.logo-text {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: var(--font-size-lg);
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.logo-text span { color: var(--primary); }

/* Nav */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-link {
  position: relative;
  padding: 0.5rem 0.85rem;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 0.85rem;
  right: 0.85rem;
  height: 2px;
  background: var(--primary);
  border-radius: var(--radius-full);
  transform: scaleX(0);
  transition: transform var(--transition);
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary);
}

.nav-link:hover::after,
.nav-link.active::after {
  transform: scaleX(1);
}

/* Header Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* Theme Toggle */
.theme-toggle {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: var(--bg-input);
  border: 1.5px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  color: var(--text-secondary);
  font-size: 1rem;
  flex-shrink: 0;
}

.theme-toggle:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  transform: rotate(20deg);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast);
}

.hamburger:hover { background: var(--bg-input); }

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: var(--radius-full);
  transition: all var(--transition);
}

.hamburger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger.active span:nth-child(2) { opacity: 0; }

.hamburger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Nav Overlay */
.mobile-nav {
  display: none;
  position: fixed;
  top: var(--header-h);
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--bg);
  z-index: 999;
  padding: 2rem 1.5rem;
  overflow-y: auto;
  animation: slideDown 0.3s ease;
}

.mobile-nav.open { display: block; }

.mobile-nav .nav-link {
  display: block;
  padding: 1rem 0;
  font-size: var(--font-size-lg);
  border-bottom: 1px solid var(--border);
  border-radius: 0;
}

.mobile-nav .nav-link::after { display: none; }

/* ════════════════════════════════════════
   8. HERO SECTION
   ════════════════════════════════════════ */
.hero {
  padding-top: calc(var(--header-h) + 80px);
  padding-bottom: 100px;
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 20% 50%, rgba(79,70,229,0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 80% 20%, rgba(124,58,237,0.1) 0%, transparent 50%),
              radial-gradient(ellipse at 60% 80%, rgba(6,182,212,0.08) 0%, transparent 50%);
  pointer-events: none;
}

/* Floating shapes */
.hero-shape {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.35;
  pointer-events: none;
  animation: floatShape 8s ease-in-out infinite;
}

.hero-shape-1 {
  width: 400px;
  height: 400px;
  background: var(--primary);
  top: -100px;
  left: -100px;
  animation-delay: 0s;
}

.hero-shape-2 {
  width: 300px;
  height: 300px;
  background: var(--secondary);
  top: 200px;
  right: -80px;
  animation-delay: -3s;
}

.hero-shape-3 {
  width: 200px;
  height: 200px;
  background: var(--accent);
  bottom: -50px;
  left: 40%;
  animation-delay: -6s;
}

@keyframes floatShape {
  0%, 100% { transform: translate(0, 0); }
  33% { transform: translate(20px, -20px); }
  66% { transform: translate(-15px, 15px); }
}

.hero-content {
  position: relative;
  z-index: 2;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  background: rgba(79,70,229,0.1);
  border: 1px solid rgba(79,70,229,0.25);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  color: var(--primary);
  font-weight: 500;
  margin-bottom: 1.5rem;
  animation: fadeInDown 0.6s ease;
}

.hero-title {
  font-size: clamp(2.2rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
  animation: fadeInUp 0.7s ease 0.1s both;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, var(--font-size-xl));
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 2.5rem;
  max-width: 520px;
  animation: fadeInUp 0.7s ease 0.2s both;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 3rem;
  animation: fadeInUp 0.7s ease 0.3s both;
}

.hero-trust {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  animation: fadeInUp 0.7s ease 0.4s both;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.trust-item i {
  color: var(--success);
  font-size: 0.9rem;
}

.hero-image-wrapper {
  position: relative;
  animation: fadeInRight 0.8s ease 0.2s both;
}

.hero-image-wrapper img {
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  width: 100%;
}

.hero-float-card {
  position: absolute;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.85rem 1.1rem;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: var(--font-size-sm);
  font-weight: 600;
  animation: floatCard 3s ease-in-out infinite;
}

.hero-float-card .fc-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}

.hero-float-card-1 { bottom: 80px; left: -40px; animation-delay: 0s; }
.hero-float-card-2 { top: 60px; right: -30px; animation-delay: -1.5s; }
.hero-float-card-3 { top: 50%; right: -20px; animation-delay: -0.8s; }

@keyframes floatCard {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* ════════════════════════════════════════
   9. STATS BAR
   ════════════════════════════════════════ */
.stats-bar {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 2rem 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  text-align: center;
}

.stat-item .stat-number {
  font-family: var(--font-heading);
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--primary);
  display: block;
}

.stat-item .stat-label {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-top: 0.25rem;
}

/* ════════════════════════════════════════
   10. BENEFITS / FEATURES GRID
   ════════════════════════════════════════ */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem 1.75rem;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(79,70,229,0.3);
}

.feature-card:hover::before { transform: scaleX(1); }

/* ════════════════════════════════════════
   11. HOW IT WORKS
   ════════════════════════════════════════ */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  position: relative;
}

.steps-grid::before {
  content: '';
  position: absolute;
  top: 40px;
  left: 12.5%;
  right: 12.5%;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  z-index: 0;
}

.step-card {
  text-align: center;
  position: relative;
  z-index: 1;
}

.step-number {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: var(--font-size-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.25rem;
  box-shadow: 0 4px 14px rgba(79,70,229,0.4);
  transition: transform var(--transition);
}

.step-card:hover .step-number { transform: scale(1.1); }

.step-icon {
  font-size: 1.5rem;
  color: var(--primary);
  margin-bottom: 0.75rem;
}

.step-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.step-desc {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

/* ════════════════════════════════════════
   12. INVOICE PREVIEW SECTION
   ════════════════════════════════════════ */
.preview-section {
  background: var(--bg-secondary);
}

.preview-mockup {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

.preview-mockup-header {
  padding: 1rem 1.5rem;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.mockup-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255,255,255,0.4);
}

.preview-mockup img {
  width: 100%;
  display: block;
}

/* ════════════════════════════════════════
   13. WHO CAN USE IT
   ════════════════════════════════════════ */
.users-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
}

.user-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  text-align: center;
  transition: all var(--transition);
}

.user-card:hover {
  border-color: var(--primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.user-card .user-icon {
  font-size: 2rem;
  margin-bottom: 0.75rem;
  display: block;
}

.user-card .user-name {
  font-weight: 600;
  font-size: var(--font-size-sm);
  color: var(--text-primary);
}

/* ════════════════════════════════════════
   14. SEO CONTENT SECTION
   ════════════════════════════════════════ */
.seo-content {
  background: var(--bg-secondary);
}

.seo-content h2 {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin: 2.5rem 0 1rem;
  padding-top: 1rem;
  color: var(--text-primary);
}

.seo-content h2:first-child { margin-top: 0; }

.seo-content h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin: 1.75rem 0 0.75rem;
  color: var(--text-primary);
}

.seo-content p {
  color: var(--text-secondary);
  margin-bottom: 1rem;
  line-height: 1.8;
}

.seo-content ul {
  list-style: disc;
  padding-left: 1.5rem;
  margin-bottom: 1rem;
  color: var(--text-secondary);
}

.seo-content ul li { margin-bottom: 0.4rem; line-height: 1.7; }

.seo-content-inner {
  max-width: 860px;
  margin: 0 auto;
}

/* ════════════════════════════════════════
   15. FAQ ACCORDION
   ════════════════════════════════════════ */
.faq-list { max-width: 800px; margin: 0 auto; }

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 0.75rem;
  overflow: hidden;
  transition: box-shadow var(--transition);
}

.faq-item.active {
  box-shadow: var(--shadow-md);
  border-color: rgba(79,70,229,0.3);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  cursor: pointer;
  font-weight: 600;
  font-size: var(--font-size-base);
  color: var(--text-primary);
  gap: 1rem;
}

.faq-question i {
  flex-shrink: 0;
  color: var(--primary);
  font-size: 0.85rem;
  transition: transform var(--transition);
}

.faq-item.active .faq-question i { transform: rotate(180deg); }

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
}

.faq-item.active .faq-answer { max-height: 400px; }

.faq-answer-inner {
  padding: 0 1.5rem 1.25rem;
  color: var(--text-secondary);
  line-height: 1.7;
  font-size: var(--font-size-sm);
}

/* ════════════════════════════════════════
   16. CTA SECTION
   ════════════════════════════════════════ */
.cta-section {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  text-align: center;
  padding: 80px 0;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.cta-section h2 {
  color: #fff;
  font-size: clamp(1.75rem, 4vw, 3rem);
  font-weight: 800;
  margin-bottom: 1rem;
  position: relative;
}

.cta-section p {
  color: rgba(255,255,255,0.85);
  font-size: var(--font-size-lg);
  margin-bottom: 2.5rem;
  max-width: 550px;
  margin-left: auto;
  margin-right: auto;
  position: relative;
}

.btn-cta {
  background: #fff;
  color: var(--primary);
  font-weight: 700;
  padding: 1rem 2.5rem;
  border-radius: var(--radius);
  font-size: var(--font-size-lg);
  box-shadow: 0 8px 30px rgba(0,0,0,0.2);
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: all var(--transition);
}

.btn-cta:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.3);
  color: var(--primary);
}

/* ════════════════════════════════════════
   17. INVOICE TOOL PAGE
   ════════════════════════════════════════ */
.tool-page {
  padding-top: calc(var(--header-h) + 30px);
  padding-bottom: 60px;
}

.tool-header {
  padding: 2rem 0;
  margin-bottom: 2rem;
}

.tool-header h1 {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 700;
}

.tool-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-top: 1rem;
}

/* Two Column Layout */
.tool-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: start;
}

/* Form Panel */
.form-panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.form-panel-section {
  padding: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.form-panel-section:last-child { border-bottom: none; }

.panel-section-title {
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.panel-section-title i {
  color: var(--primary);
  font-size: 0.95rem;
}

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

/* Logo Upload */
.logo-upload-area {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
}

.logo-upload-area:hover,
.logo-upload-area.drag-over {
  border-color: var(--primary);
  background: rgba(79,70,229,0.05);
}

.logo-upload-area input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
  width: 100%;
  height: 100%;
}

.logo-preview-img {
  max-height: 80px;
  max-width: 200px;
  border-radius: var(--radius-sm);
  margin: 0 auto 0.75rem;
  display: none;
  object-fit: contain;
}

.logo-preview-img.visible { display: block; }

/* Invoice Items Table */
.items-table-wrapper {
  overflow-x: auto;
  margin-bottom: 1rem;
}

.items-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 700px;
}

.items-table th {
  background: var(--bg-input);
  padding: 0.6rem 0.75rem;
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--text-secondary);
  text-align: left;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--border);
}

.items-table td {
  padding: 0.5rem 0.35rem;
  vertical-align: middle;
  border-bottom: 1px solid var(--border);
}

.items-table tr:last-child td { border-bottom: none; }

.items-table .form-control {
  padding: 0.45rem 0.6rem;
  font-size: var(--font-size-sm);
}

.item-total-cell {
  font-weight: 600;
  color: var(--text-primary);
  font-size: var(--font-size-sm);
  white-space: nowrap;
  padding: 0.5rem 0.75rem;
}

/* Totals Section */
.totals-panel {
  max-width: 380px;
  margin-left: auto;
}

.total-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border);
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.total-row:last-child { border-bottom: none; }

.total-row.total-grand {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--text-primary);
  border-top: 2px solid var(--border);
  margin-top: 0.5rem;
  padding-top: 0.75rem;
}

.total-row.total-balance {
  font-weight: 700;
  color: var(--primary);
}

.total-value { font-weight: 600; color: var(--text-primary); }

/* Preview Panel */
.preview-panel {
  position: sticky;
  top: calc(var(--header-h) + 20px);
}

.preview-panel-header {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-bottom: none;
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.preview-title {
  font-weight: 700;
  font-size: var(--font-size-base);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.preview-actions { display: flex; gap: 0.5rem; }

.invoice-preview-container {
  background: #e5e7eb;
  border: 1px solid var(--border);
  border-radius: 0 0 var(--radius-xl) var(--radius-xl);
  padding: 1.5rem;
  overflow-y: auto;
  max-height: calc(100vh - 200px);
}

/* ─────────────────────────────────
   INVOICE DOCUMENT (the actual A4)
   ───────────────────────────────── */
#invoice-document {
  background: #ffffff;
  width: 100%;
  max-width: 794px;
  margin: 0 auto;
  padding: 48px;
  border-radius: 6px;
  box-shadow: 0 4px 24px rgba(0,0,0,0.18);
  color: #111827;
  font-family: 'Inter', sans-serif;
  font-size: 12px;
  line-height: 1.5;
}

#invoice-document .inv-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 36px;
  padding-bottom: 24px;
  border-bottom: 2px solid #e5e7eb;
}

#invoice-document .inv-brand .inv-logo {
  max-width: 130px;
  max-height: 70px;
  object-fit: contain;
  margin-bottom: 10px;
}

#invoice-document .inv-business-name {
  font-size: 16px;
  font-weight: 700;
  color: #111827;
  margin-bottom: 4px;
}

#invoice-document .inv-business-details {
  font-size: 11px;
  color: #6b7280;
  line-height: 1.6;
}

#invoice-document .inv-title-block { text-align: right; }

#invoice-document .inv-title {
  font-size: 28px;
  font-weight: 800;
  color: #4F46E5;
  letter-spacing: -0.03em;
  margin-bottom: 8px;
}

#invoice-document .inv-meta { font-size: 11px; color: #6b7280; line-height: 1.8; }
#invoice-document .inv-meta strong { color: #111827; }

#invoice-document .inv-parties {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 30px;
}

#invoice-document .inv-party-label {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #9ca3af;
  margin-bottom: 6px;
}

#invoice-document .inv-party-name {
  font-size: 13px;
  font-weight: 700;
  color: #111827;
  margin-bottom: 3px;
}

#invoice-document .inv-party-details { font-size: 11px; color: #6b7280; line-height: 1.6; }

#invoice-document .inv-status-badge {
  display: inline-flex;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  margin-top: 6px;
}

#invoice-document .status-paid { background: #d1fae5; color: #065f46; }
#invoice-document .status-unpaid { background: #fee2e2; color: #991b1b; }
#invoice-document .status-draft { background: #f3f4f6; color: #374151; }
#invoice-document .status-overdue { background: #fef3c7; color: #92400e; }

#invoice-document .inv-items-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 24px;
}

#invoice-document .inv-items-table thead tr {
  background: #4F46E5;
  color: #ffffff;
}

#invoice-document .inv-items-table th {
  padding: 9px 12px;
  font-size: 10px;
  font-weight: 600;
  text-align: left;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

#invoice-document .inv-items-table th:last-child,
#invoice-document .inv-items-table td:last-child {
  text-align: right;
}

#invoice-document .inv-items-table td {
  padding: 8px 12px;
  font-size: 11px;
  color: #374151;
  border-bottom: 1px solid #f3f4f6;
}

#invoice-document .inv-items-table tbody tr:nth-child(even) td {
  background: #fafafa;
}

#invoice-document .inv-totals {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 24px;
}

#invoice-document .inv-totals-inner {
  width: 280px;
}

#invoice-document .inv-total-row {
  display: flex;
  justify-content: space-between;
  padding: 5px 0;
  font-size: 11px;
  color: #6b7280;
  border-bottom: 1px solid #f3f4f6;
}

#invoice-document .inv-total-row.grand {
  font-size: 14px;
  font-weight: 700;
  color: #111827;
  border-bottom: none;
  padding-top: 8px;
}

#invoice-document .inv-total-row.balance {
  font-weight: 700;
  color: #4F46E5;
}

#invoice-document .inv-notes {
  margin-bottom: 20px;
  padding: 14px 16px;
  background: #f9fafb;
  border-radius: 6px;
  border-left: 3px solid #4F46E5;
}

#invoice-document .inv-notes-label {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #9ca3af;
  margin-bottom: 5px;
}

#invoice-document .inv-notes-text { font-size: 11px; color: #374151; }

#invoice-document .inv-payment {
  margin-bottom: 20px;
  padding: 14px 16px;
  background: #f0f9ff;
  border-radius: 6px;
  border-left: 3px solid #06B6D4;
}

#invoice-document .inv-payment-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
  font-size: 11px;
}

#invoice-document .inv-payment-item label {
  font-size: 10px;
  color: #9ca3af;
  font-weight: 600;
  display: block;
  margin-bottom: 1px;
}

#invoice-document .inv-footer {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-top: 30px;
  padding-top: 16px;
  border-top: 1px solid #e5e7eb;
}

#invoice-document .inv-thankyou {
  font-size: 12px;
  font-style: italic;
  color: #6b7280;
}

#invoice-document .inv-signature {
  text-align: right;
  min-width: 160px;
}

#invoice-document .inv-signature-line {
  border-bottom: 1px solid #374151;
  margin-bottom: 5px;
  height: 40px;
}

#invoice-document .inv-signature img {
  max-height: 50px;
  max-width: 150px;
  object-fit: contain;
}

#invoice-document .inv-signature-label {
  font-size: 10px;
  color: #9ca3af;
  text-align: center;
}

#invoice-document .inv-terms {
  margin-bottom: 20px;
  font-size: 10px;
  color: #9ca3af;
  line-height: 1.6;
}

/* Colour themes for invoice */
#invoice-document.theme-blue .inv-items-table thead tr { background: #2563eb; }
#invoice-document.theme-blue .inv-title { color: #2563eb; }
#invoice-document.theme-green .inv-items-table thead tr { background: #059669; }
#invoice-document.theme-green .inv-title { color: #059669; }
#invoice-document.theme-red .inv-items-table thead tr { background: #dc2626; }
#invoice-document.theme-red .inv-title { color: #dc2626; }
#invoice-document.theme-orange .inv-items-table thead tr { background: #d97706; }
#invoice-document.theme-orange .inv-title { color: #d97706; }
#invoice-document.theme-teal .inv-items-table thead tr { background: #0891b2; }
#invoice-document.theme-teal .inv-title { color: #0891b2; }

/* Compact layout */
#invoice-document.compact { padding: 30px; font-size: 11px; }
#invoice-document.compact .inv-title { font-size: 22px; }
#invoice-document.compact .inv-header { margin-bottom: 20px; padding-bottom: 16px; }

/* Signature Tabs */
.sig-tabs { display: flex; gap: 0.5rem; margin-bottom: 1rem; }
.sig-tab {
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--border);
  font-size: var(--font-size-xs);
  font-weight: 600;
  cursor: pointer;
  background: var(--bg-input);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}
.sig-tab.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

.sig-canvas {
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-input);
  width: 100%;
  height: 100px;
  cursor: crosshair;
  display: block;
}

/* Colour Picker Swatches */
.colour-swatches {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-top: 0.5rem;
}

.colour-swatch {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  cursor: pointer;
  border: 2.5px solid transparent;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.colour-swatch:hover { transform: scale(1.15); }
.colour-swatch.active { border-color: var(--text-primary); }

/* Toggle switches */
.toggle-switch {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  cursor: pointer;
}

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

.toggle-track {
  width: 40px;
  height: 22px;
  background: var(--bg-input);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-full);
  position: relative;
  transition: background var(--transition-fast);
  flex-shrink: 0;
}

.toggle-track::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--text-muted);
  transition: left var(--transition-fast), background var(--transition-fast);
}

.toggle-switch input:checked + .toggle-track {
  background: var(--primary);
  border-color: var(--primary);
}

.toggle-switch input:checked + .toggle-track::after {
  left: 18px;
  background: #fff;
}

.toggle-label { font-size: var(--font-size-sm); color: var(--text-secondary); }

/* ════════════════════════════════════════
   18. MODAL
   ════════════════════════════════════════ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
  backdrop-filter: blur(4px);
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: all;
}

.modal-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  max-width: 440px;
  width: 100%;
  box-shadow: var(--shadow-xl);
  transform: scale(0.9) translateY(20px);
  transition: transform var(--transition);
}

.modal-overlay.active .modal-box {
  transform: scale(1) translateY(0);
}

.modal-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.modal-text {
  color: var(--text-secondary);
  margin-bottom: 2rem;
  line-height: 1.6;
}

.modal-actions { display: flex; gap: 0.75rem; justify-content: flex-end; }

/* ════════════════════════════════════════
   19. TOAST NOTIFICATIONS
   ════════════════════════════════════════ */
.toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 3000;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.toast {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-primary);
  min-width: 280px;
  animation: toastIn 0.3s ease;
}

.toast.success { border-left: 4px solid var(--success); }
.toast.error { border-left: 4px solid var(--error); }
.toast.warning { border-left: 4px solid var(--warning); }
.toast.info { border-left: 4px solid var(--info); }

.toast i.success { color: var(--success); }
.toast i.error { color: var(--error); }
.toast i.warning { color: var(--warning); }
.toast i.info { color: var(--info); }

@keyframes toastIn {
  from { transform: translateX(100px); opacity: 0; }
  to   { transform: translateX(0); opacity: 1; }
}

/* ════════════════════════════════════════
   20. BREADCRUMB
   ════════════════════════════════════════ */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.breadcrumb a { color: var(--text-secondary); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { color: var(--text-muted); font-size: 0.75rem; }
.breadcrumb .current { color: var(--text-primary); font-weight: 500; }

/* ════════════════════════════════════════
   21. FOOTER
   ════════════════════════════════════════ */
.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 70px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand .site-logo { margin-bottom: 1rem; }

.footer-desc {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 1.25rem;
}

.social-links {
  display: flex;
  gap: 0.6rem;
}

.social-link {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  background: var(--bg-input);
  border: 1.5px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  font-size: 0.9rem;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.social-link:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  transform: translateY(-2px);
}

.footer-heading {
  font-size: var(--font-size-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
}

.footer-links { display: flex; flex-direction: column; gap: 0.6rem; }

.footer-link {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.footer-link:hover { color: var(--primary); }
.footer-link i { font-size: 0.7rem; }

/* Newsletter */
.newsletter-text {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-bottom: 1rem;
  line-height: 1.6;
}

.newsletter-form {
  display: flex;
  gap: 0.5rem;
}

.newsletter-form .form-control {
  flex: 1;
  padding: 0.65rem 1rem;
  font-size: var(--font-size-sm);
}

/* Footer Bottom */
.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 1.25rem 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.copyright {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}

.footer-bottom-links {
  display: flex;
  gap: 1.25rem;
}

.footer-bottom-links a {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}

.footer-bottom-links a:hover { color: var(--primary); }

/* Back to Top */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 44px;
  height: 44px;
  background: var(--primary);
  color: #fff;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 14px rgba(79,70,229,0.4);
  cursor: pointer;
  transition: all var(--transition);
  opacity: 0;
  pointer-events: none;
  transform: translateY(20px);
  z-index: 900;
}

.back-to-top.visible {
  opacity: 1;
  pointer-events: all;
  transform: translateY(0);
}

.back-to-top:hover { transform: translateY(-3px); box-shadow: 0 6px 20px rgba(79,70,229,0.5); }

/* ════════════════════════════════════════
   22. INNER PAGE HERO (About, Contact, etc.)
   ════════════════════════════════════════ */
.page-hero {
  padding: calc(var(--header-h) + 60px) 0 60px;
  background: linear-gradient(135deg, rgba(79,70,229,0.07) 0%, rgba(124,58,237,0.05) 100%);
  border-bottom: 1px solid var(--border);
}

.page-hero h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  margin-bottom: 1rem;
}

.page-hero p {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  max-width: 580px;
}

/* ════════════════════════════════════════
   23. ABOUT PAGE
   ════════════════════════════════════════ */
.about-content {
  max-width: 860px;
  margin: 0 auto;
}

.about-content h2 {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin: 2.5rem 0 1rem;
  color: var(--text-primary);
}

.about-content h2:first-child { margin-top: 0; }

.about-content p {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 1rem;
}

.about-content ul {
  list-style: none;
  margin-bottom: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.about-content ul li {
  display: flex;
  gap: 0.6rem;
  align-items: flex-start;
  color: var(--text-secondary);
}

.about-content ul li::before {
  content: '\f00c';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  color: var(--success);
  font-size: 0.8rem;
  margin-top: 0.2rem;
  flex-shrink: 0;
}

/* ════════════════════════════════════════
   24. CONTACT PAGE
   ════════════════════════════════════════ */
.contact-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 4rem;
  align-items: start;
}

.contact-info-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 2rem;
}

.contact-info-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
}

.contact-info-item:last-child { border-bottom: none; }

.contact-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, rgba(79,70,229,0.12), rgba(124,58,237,0.12));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  flex-shrink: 0;
}

.contact-info-label {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.contact-info-value {
  font-weight: 500;
  color: var(--text-primary);
}

/* Alert / Notice boxes */
.notice-box {
  background: rgba(245,158,11,0.1);
  border: 1px solid rgba(245,158,11,0.3);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  margin-bottom: 1.5rem;
}

.notice-box i { color: var(--warning); flex-shrink: 0; margin-top: 0.1rem; }

/* Form success/error messages */
.form-message {
  padding: 1rem 1.25rem;
  border-radius: var(--radius);
  font-size: var(--font-size-sm);
  font-weight: 500;
  display: none;
  align-items: center;
  gap: 0.75rem;
  margin-top: 1rem;
}

.form-message.show { display: flex; }
.form-message.success { background: rgba(16,185,129,0.1); color: var(--success); border: 1px solid rgba(16,185,129,0.25); }
.form-message.error { background: rgba(239,68,68,0.1); color: var(--error); border: 1px solid rgba(239,68,68,0.25); }

/* ════════════════════════════════════════
   25. POLICY / LEGAL PAGES
   ════════════════════════════════════════ */
.legal-content {
  max-width: 860px;
  margin: 0 auto;
}

.legal-content h2 {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin: 2.5rem 0 1rem;
  padding-top: 1rem;
  color: var(--text-primary);
  border-top: 1px solid var(--border);
}

.legal-content h2:first-child { border-top: none; margin-top: 0; }

.legal-content h3 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin: 1.5rem 0 0.75rem;
}

.legal-content p {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 1rem;
}

.legal-content ul, .legal-content ol {
  padding-left: 1.5rem;
  margin-bottom: 1rem;
  color: var(--text-secondary);
}

.legal-content ul { list-style: disc; }
.legal-content ol { list-style: decimal; }
.legal-content li { margin-bottom: 0.4rem; line-height: 1.7; }

.legal-meta {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.legal-meta i { color: var(--primary); }

/* ════════════════════════════════════════
   26. ANIMATIONS
   ════════════════════════════════════════ */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}

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

@keyframes fadeInRight {
  from { opacity: 0; transform: translateX(40px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-10px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Scroll-triggered animation classes */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.animated {
  opacity: 1;
  transform: translateY(0);
}

.animate-delay-1 { transition-delay: 0.1s; }
.animate-delay-2 { transition-delay: 0.2s; }
.animate-delay-3 { transition-delay: 0.3s; }
.animate-delay-4 { transition-delay: 0.4s; }
.animate-delay-5 { transition-delay: 0.5s; }

/* Respect reduced-motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .hero-shape { animation: none; }
  .hero-float-card { animation: none; }
}

/* ════════════════════════════════════════
   27. RESPONSIVE BREAKPOINTS
   ════════════════════════════════════════ */

/* ── 1200px ── */
@media (max-width: 1200px) {
  :root { --section-pad: 80px; }
  .tool-layout { grid-template-columns: 1fr; }
  .preview-panel { position: static; }
  .invoice-preview-container { max-height: 600px; }
}

/* ── 992px ── */
@media (max-width: 992px) {
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid::before { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
  .contact-grid { grid-template-columns: 1fr; gap: 2rem; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .hero { padding-top: calc(var(--header-h) + 50px); }
}

/* ── 768px ── */
@media (max-width: 768px) {
  :root { --section-pad: 60px; }
  .nav-menu { display: none; }
  .header-actions .btn { display: none; }
  .hamburger { display: flex; }
  .hero-title { font-size: 2rem; }
  .hero-cta { flex-direction: column; }
  .hero-cta .btn { width: 100%; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; align-items: center; text-align: center; }
  #invoice-document { padding: 24px; }
  #invoice-document .inv-parties { grid-template-columns: 1fr; }
  #invoice-document .inv-payment-grid { grid-template-columns: 1fr; }
}

/* ── 576px ── */
@media (max-width: 576px) {
  :root { --section-pad: 50px; }
  .section-title { font-size: 1.6rem; }
  .users-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-trust { flex-direction: column; gap: 0.75rem; }
  .hero-float-card { display: none; }
  .tool-actions { flex-direction: column; }
  .tool-actions .btn { width: 100%; }
  .steps-grid { grid-template-columns: 1fr; }
  .newsletter-form { flex-direction: column; }
}

/* ── 375px ── */
@media (max-width: 375px) {
  .container { padding: 0 1rem; }
  .hero-title { font-size: 1.75rem; }
  .users-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
}

/* ════════════════════════════════════════
   28. PRINT STYLES
   ════════════════════════════════════════ */
@media print {
  #site-header,
  #site-footer,
  .back-to-top,
  .toast-container,
  .modal-overlay,
  .tool-header,
  .form-panel,
  .preview-panel-header,
  .tool-actions,
  .btn { display: none !important; }

  body { background: #fff !important; color: #000 !important; }

  .invoice-preview-container {
    background: #fff !important;
    border: none !important;
    padding: 0 !important;
    max-height: none !important;
  }

  #invoice-document {
    box-shadow: none !important;
    padding: 0 !important;
    font-size: 11pt !important;
  }

  #invoice-document .inv-items-table thead tr {
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }
}

/* ════════════════════════════════════════
   29. LOCAL STORAGE NOTICE BANNER
   ════════════════════════════════════════ */
.ls-notice {
  background: rgba(6,182,212,0.08);
  border: 1px solid rgba(6,182,212,0.25);
  border-radius: var(--radius);
  padding: 0.75rem 1.25rem;
  font-size: var(--font-size-xs);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.ls-notice i { color: var(--accent); }

/* ════════════════════════════════════════
   30. SCROLL INDICATOR
   ════════════════════════════════════════ */
.scroll-indicator {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  z-index: 1001;
  transition: width 0.1s linear;
}