/* ==========================================================================
   INVOICEGEN DESIGN SYSTEM & TOKENS
   Aesthetic: Clean White & Emerald Green Fintech SaaS
   ========================================================================== */

/* --------------------------------------------------------------------------
   SELF-HOSTED FONTS & ZERO-SHIFT STABILIZATION
   Eliminates FOUT, FOIT, and Layout Shifts from Frame 0
   -------------------------------------------------------------------------- */
@font-face {
  font-family: 'Plus Jakarta Sans';
  font-style: normal;
  font-weight: 200 800;
  font-display: swap;
  src: url('/assets/fonts/plus-jakarta-sans-variable.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url('/assets/fonts/jetbrains-mono-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* Fallback Font Metric Overrides (Matches Segoe UI / Apple System to Plus Jakarta Sans) */
@font-face {
  font-family: 'Plus Jakarta Sans Fallback';
  src: local('Segoe UI'), local('Roboto'), local('Helvetica Neue'), local('Arial');
  ascent-override: 102%;
  descent-override: 28%;
  line-gap-override: 0%;
  size-adjust: 101%;
}

:root {
  /* Brand Green Palette */
  --primary-50: #ecfdf5;
  --primary-100: #d1fae5;
  --primary-200: #a7f3d0;
  --primary-300: #6ee7b7;
  --primary-400: #34d399;
  --primary-500: #10b981;
  --primary-600: #059669; /* Main Brand */
  --primary-700: #047857;
  --primary-800: #065f46;
  --primary-900: #064e3b;
  --primary-glow: transparent;

  /* Neutrals & Slate */
  --color-white: #ffffff;
  --bg-page: #f8fafc;
  --bg-surface: #ffffff;
  --bg-card: #ffffff;
  --bg-muted: #f1f5f9;
  --bg-subtle: #f8fafc;

  /* Borders */
  --border-subtle: #f1f5f9;
  --border-light: #e2e8f0;
  --border-medium: #cbd5e1;
  --border-focus: var(--primary-500);

  /* Typography Colors */
  --text-main: #0f172a;
  --text-secondary: #334155;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  --text-inverse: #ffffff;

  /* Accent & Status */
  --danger-50: #fef2f2;
  --danger-500: #ef4444;
  --danger-600: #dc2626;
  --warning-50: #fffbeb;
  --warning-500: #f59e0b;
  --info-50: #eff6ff;
  --info-500: #3b82f6;

  /* Fonts */
  --font-sans: 'Plus Jakarta Sans', 'Plus Jakarta Sans Fallback', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Elevation & Shadows */
  --shadow-xs: 0 1px 2px 0 rgba(15, 23, 42, 0.04);
  --shadow-sm: 0 1px 3px 0 rgba(15, 23, 42, 0.06), 0 1px 2px -1px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.07), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.04);
  --shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(15, 23, 42, 0.15);
  --shadow-emerald: 0 2px 4px rgba(15, 23, 42, 0.06);

  /* Radius */
  --radius-xs: 4px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 350ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Layout */
  --max-width: 1240px;
  --header-height: 64px;
}

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

html {
  font-size: 16px;
  overflow-y: scroll;
  scrollbar-gutter: stable;
  -webkit-text-size-adjust: 100%;
}

.lang-switcher-container {
  display: inline-flex;
  align-items: center;
  min-width: 76px;
  min-height: 34px;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-page);
  color: var(--text-main);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  overflow-x: hidden;
}

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

input, button, textarea, select {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

/* Layout Containers */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

@media (min-width: 768px) {
  .container {
    padding-left: 32px;
    padding-right: 32px;
  }
}

/* Button Utilities */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  font-size: 0.9375rem;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast), color var(--transition-fast), transform var(--transition-fast), opacity var(--transition-fast);
  white-space: nowrap;
  user-select: none;
}

.btn-primary {
  background-color: var(--primary-600);
  color: var(--color-white);
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background-color: var(--primary-700);
  box-shadow: var(--shadow-md);
}

.btn-primary:active {
  background-color: var(--primary-800);
}

.btn-secondary {
  background-color: var(--color-white);
  color: var(--text-main);
  border-color: var(--border-light);
  box-shadow: var(--shadow-xs);
}

.btn-secondary:hover {
  background-color: var(--bg-subtle);
  border-color: var(--border-medium);
  color: var(--primary-700);
}

.btn-outline {
  background-color: transparent;
  color: var(--primary-600);
  border-color: var(--primary-300);
}

.btn-outline:hover {
  background-color: var(--primary-50);
  border-color: var(--primary-600);
}

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

.btn-ghost:hover {
  background-color: var(--bg-muted);
  color: var(--text-main);
}

.btn-sm {
  padding: 6px 14px;
  font-size: 0.8125rem;
  border-radius: var(--radius-sm);
}

.btn-lg {
  padding: 14px 28px;
  font-size: 1.0625rem;
  border-radius: var(--radius-md);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 4px 10px;
  border-radius: 4px;
}

.badge-green {
  background-color: var(--primary-50);
  color: var(--primary-700);
  border: 1px solid var(--primary-200);
}

.badge-gray {
  background-color: var(--bg-muted);
  color: var(--text-muted);
  border: 1px solid var(--border-light);
}

/* Inputs & Form Controls */
.input-text, .input-select, .input-textarea {
  width: 100%;
  padding: 9px 12px;
  background-color: var(--color-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  font-size: 0.875rem;
  transition: border-color var(--transition-fast);
}

.input-text:focus, .input-select:focus, .input-textarea:focus {
  outline: none;
  border-color: var(--primary-600);
  box-shadow: 0 0 0 2px rgba(15, 23, 42, 0.08);
}

.input-text::placeholder, .input-textarea::placeholder {
  color: var(--text-light);
}

/* Typography Utilities */
.text-gradient {
  background: linear-gradient(135deg, var(--primary-700) 0%, var(--primary-500) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary-700);
  font-weight: 700;
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-tag::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--primary-500);
  box-shadow: 0 0 0 4px var(--primary-100);
}

.section-title {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-main);
  line-height: 1.2;
}

@media (min-width: 768px) {
  .section-title {
    font-size: 2.75rem;
  }
}

.section-desc {
  font-size: 1.125rem;
  color: var(--text-muted);
  max-width: 680px;
  margin-top: 12px;
  line-height: 1.6;
}

/* ==========================================================================
   SMOOTH SITE STABILITY & MICRO-INTERACTIONS
   Rock-solid stability, zero layout shifts, zero jumping/bumping
   ========================================================================== */

/* Universal Clean Boxy SaaS Card */
.saas-card,
.seo-article,
.pricing-tier-card,
.pricing-v2-card,
.feature-box-card,
.template-showcase-card,
.blog-article-card,
.about-content-section,
.about-card-stat,
.security-card,
.contact-card,
.gateway-card {
  background-color: var(--color-white);
  border: 1px solid var(--border-light);
  border-radius: 8px !important;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.04);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.saas-card:hover,
.seo-article:hover,
.blog-article-card:hover,
.about-content-section:hover,
.about-card-stat:hover,
.security-card:hover,
.contact-card:hover,
.gateway-card:hover,
.feature-box-card:hover,
.pricing-v2-card:hover {
  border-color: var(--border-medium);
  box-shadow: 0 6px 16px -2px rgba(15, 23, 42, 0.06);
}

/* Universal Clean Box Icons Frame */
.box-icon-frame {
  width: 44px;
  height: 44px;
  border-radius: 8px;
  background-color: var(--primary-50);
  border: 1px solid var(--primary-100);
  color: var(--primary-700);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

.box-icon-frame.icon-neutral {
  background-color: #f8fafc;
  border-color: #e2e8f0;
  color: #0f172a;
}

.box-icon-frame.icon-sm {
  width: 36px;
  height: 36px;
  border-radius: 6px;
}

.box-icon-frame.icon-lg {
  width: 48px;
  height: 48px;
  border-radius: 8px;
}

.box-icon-frame svg {
  stroke-width: 2.2;
}

.box-icon-frame:hover {
  background-color: var(--primary-100);
  border-color: var(--primary-300);
}

.box-icon-frame.icon-neutral:hover {
  background-color: #f1f5f9;
  border-color: #cbd5e1;
  color: #00c875;
}

/* Micro-interaction on buttons (Rock-solid, zero text shaking/jumping) */
.btn:active,
.btn-login:active,
.btn-signup-free:active,
.btn-auth-primary:active,
.btn-use-template:active,
.btn-contact-submit:active,
.btn-generate-pdf:active,
.btn-cta-primary:active {
  opacity: 0.96;
}

/* Hero Badge Consistent with Homepage */
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 12px;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  background: var(--primary-50);
  color: var(--primary-700);
  border: 1px solid var(--primary-200);
  border-radius: 4px;
  margin-bottom: 14px;
  transition: background-color 0.15s ease, border-color 0.15s ease;
}

.hero-badge:hover {
  background: var(--primary-100);
  border-color: var(--primary-300);
}

.badge-dot {
  width: 6px;
  height: 6px;
  background: #00c875;
  border-radius: 50%;
  display: inline-block;
}

/* Rock-Solid Zero-Jitter Navigation (No artificial freeze or snapshot animation) */
.navbar-saas {
  view-transition-name: none;
}

/* Rock-Solid Brand & Favicon Stabilization (Futuristic Minimalist Identity) */
.brand-wrapper {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  user-select: none;
  transition: opacity 0.15s ease;
  white-space: nowrap;
  flex-shrink: 0;
}

.brand-wrapper:hover {
  opacity: 0.95;
}

.brand-logo-frame {
  width: 42px !important;
  height: 42px !important;
  min-width: 42px !important;
  min-height: 42px !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  flex-shrink: 0 !important;
}

.brand-icon-svg {
  width: 42px !important;
  height: 42px !important;
  min-width: 42px !important;
  min-height: 42px !important;
  display: block !important;
  flex-shrink: 0 !important;
  /* Zero animation - stable & rock-solid */
  transform: none !important;
  transition: none !important;
}

.brand-wrapper:hover .brand-icon-svg {
  transform: none !important;
}

.brand-name {
  font-family: var(--font-sans);
  font-size: 1.25rem !important;
  font-weight: 800 !important;
  color: #0f172a !important;
  letter-spacing: -0.03em !important;
  line-height: 1 !important;
  display: inline-flex !important;
  align-items: baseline !important;
  white-space: nowrap !important;
  flex-shrink: 0 !important;
}

.brand-name .accent,
.brand-name .brand-accent {
  color: inherit !important;
  background: none !important;
  -webkit-text-fill-color: initial !important;
  font-weight: 800 !important;
}

.brand-name .tld-net,
.brand-name .dot-net,
.brand-name .brand-badge,
.brand-name .badge-net {
  display: inline !important;
  font-family: var(--font-sans) !important;
  font-size: 1.28rem !important;
  font-weight: 800 !important;
  letter-spacing: -0.03em !important;
  color: #00c875 !important;
  background: transparent !important;
  border: none !important;
  padding: 0 !important;
  margin-left: 0 !important;
  line-height: 1 !important;
  vertical-align: baseline !important;
  -webkit-text-fill-color: #00c875 !important;
}

/* ==========================================================================
   GOOGLE AUTH BUTTONS & DIVIDER (Sleek SaaS Standard)
   ========================================================================== */
.btn-google-wide {
  width: 100%;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  background: #ffffff;
  color: #1e293b;
  border: 1px solid #cbd5e1;
  border-radius: 6px;
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.05);
  transition: background-color 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
  margin-bottom: 16px;
}

.btn-google-wide:hover {
  background: #f8fafc;
  border-color: #94a3b8;
  box-shadow: 0 2px 4px rgba(15, 23, 42, 0.08);
}

.btn-google-wide:active {
  background: #f1f5f9;
}

.auth-divider-line {
  display: flex;
  align-items: center;
  text-align: center;
  margin: 16px 0 20px;
  color: #94a3b8;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.auth-divider-line::before,
.auth-divider-line::after {
  content: '';
  flex: 1;
  border-bottom: 1px solid #e2e8f0;
}

.auth-divider-line span {
  padding: 0 12px;
}