/* ==========================================================================
   NumberFilter Landing Page - Modern CSS Styles
   ========================================================================== */

/* CSS Variables for Design System */
:root {
  /* Primary Colors */
  --primary-color: #4dabf7;
  --primary-dark: #339af0;
  --primary-light: #74c0fc;
  
  /* Secondary Colors */
  --secondary-color: #6c5ce7;
  --secondary-dark: #5f3dc4;
  --secondary-light: #a29bfe;
  
  /* Neutral Colors */
  --white: #ffffff;
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;
  
  /* Semantic Colors */
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;
  --info: #3b82f6;
  
  /* Typography */
  --font-primary: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --font-heading: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  
  /* Font Sizes */
  --text-xs: 0.75rem;     /* 12px */
  --text-sm: 0.875rem;    /* 14px */
  --text-base: 1rem;      /* 16px */
  --text-lg: 1.125rem;    /* 18px */
  --text-xl: 1.25rem;     /* 20px */
  --text-2xl: 1.5rem;     /* 24px */
  --text-3xl: 1.875rem;   /* 30px */
  --text-4xl: 2.25rem;    /* 36px */
  --text-5xl: 3rem;       /* 48px */
  --text-6xl: 3.75rem;    /* 60px */
  
  /* Spacing */
  --space-1: 0.25rem;     /* 4px */
  --space-2: 0.5rem;      /* 8px */
  --space-3: 0.75rem;     /* 12px */
  --space-4: 1rem;        /* 16px */
  --space-5: 1.25rem;     /* 20px */
  --space-6: 1.5rem;      /* 24px */
  --space-8: 2rem;        /* 32px */
  --space-10: 2.5rem;     /* 40px */
  --space-12: 3rem;       /* 48px */
  --space-16: 4rem;       /* 64px */
  --space-20: 5rem;       /* 80px */
  --space-24: 6rem;       /* 96px */
  --space-32: 8rem;       /* 128px */
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
  
  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-normal: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;
  
  /* Z-Index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
  --z-toast: 1080;
}

/* ==========================================================================
   Base Styles
   ========================================================================== */

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-primary);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--gray-700);
  background-color: var(--white);
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.2;
  color: var(--gray-900);
  margin-bottom: var(--space-4);
}

h1 { font-size: var(--text-5xl); }
h2 { font-size: var(--text-4xl); }
h3 { font-size: var(--text-3xl); }
h4 { font-size: var(--text-2xl); }
h5 { font-size: var(--text-xl); }
h6 { font-size: var(--text-lg); }

p {
  margin-bottom: var(--space-4);
  color: var(--gray-600);
}

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

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

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

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

@media (max-width: 768px) {
  .container {
    padding: 0 var(--space-4);
  }
}

/* Section Headers */
.section-header {
  text-align: center;
  margin-bottom: var(--space-16);
}

.section-title {
  font-size: var(--text-4xl);
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: var(--space-4);
}

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

@media (max-width: 768px) {
  .section-title {
    font-size: var(--text-3xl);
  }
  
  .section-subtitle {
    font-size: var(--text-base);
  }
}

/* Gradient Text */
.gradient-text {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Buttons */
.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-6);
  border-radius: var(--radius-lg);
  font-weight: 500;
  text-decoration: none;
  transition: all var(--transition-fast);
  cursor: pointer;
  border: none;
  font-size: var(--text-base);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
  color: var(--white);
  box-shadow: var(--shadow-md);
}

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

.btn-secondary {
  background: var(--white);
  color: var(--gray-700);
  border: 1px solid var(--gray-200);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background: var(--gray-50);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
  color: var(--gray-700);
}

/* ==========================================================================
   Navigation
   ========================================================================== */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--gray-200);
  z-index: var(--z-fixed);
  transition: all var(--transition-fast);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.logo-img {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
}

.logo-text {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--gray-900);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.nav-link {
  color: var(--gray-600);
  font-weight: 500;
  transition: color var(--transition-fast);
  position: relative;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-color);
  transition: width var(--transition-fast);
}

.nav-link:hover::after {
  width: 100%;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: var(--space-1);
  cursor: pointer;
}

.nav-toggle span {
  width: 25px;
  height: 3px;
  background: var(--gray-700);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}

@media (max-width: 768px) {
  .nav-container {
    padding: 0 var(--space-4);
  }
  
  .nav-menu {
    display: none;
  }
  
  .nav-toggle {
    display: flex;
  }
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
  overflow: hidden;
  padding-top: 70px;
}

.hero-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
  position: relative;
  z-index: 2;
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

.hero-text {
  animation: fadeInUp 1s ease-out;
}

.hero-title {
  font-size: var(--text-6xl);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: var(--space-6);
  color: var(--gray-900);
}

.hero-description {
  font-size: var(--text-xl);
  color: var(--gray-600);
  margin-bottom: var(--space-8);
  line-height: 1.7;
}

.hero-cta {
  display: flex;
  gap: var(--space-4);
  margin-bottom: var(--space-12);
}

.hero-stats {
  display: flex;
  gap: var(--space-8);
}

.stat-item {
  text-align: center;
}

.stat-number {
  display: block;
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: var(--space-1);
}

.stat-label {
  font-size: var(--text-sm);
  color: var(--gray-500);
}

.hero-image {
  position: relative;
  animation: fadeInRight 1s ease-out 0.2s both;
}

.phone-mockup {
  position: relative;
  max-width: 350px;
  margin: 0 auto;
}

.phone-screen {
  width: 100%;
  height: auto;
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-2xl);
}

.floating-elements {
  position: absolute;
  inset: 0;
}

.floating-card {
  position: absolute;
  background: var(--white);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--gray-700);
  animation: float 3s ease-in-out infinite;
}

.floating-card i {
  color: var(--primary-color);
}

.card-1 {
  top: 10%;
  right: -20%;
  animation-delay: 0s;
}

.card-2 {
  top: 50%;
  left: -25%;
  animation-delay: 1s;
}

.card-3 {
  bottom: 15%;
  right: -15%;
  animation-delay: 2s;
}

.hero-background {
  position: absolute;
  inset: 0;
  z-index: 1;
}

.bg-shape {
  position: absolute;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(77, 171, 247, 0.1) 0%, rgba(108, 92, 231, 0.1) 100%);
  animation: float 6s ease-in-out infinite;
}

.shape-1 {
  width: 200px;
  height: 200px;
  top: 10%;
  left: 10%;
  animation-delay: 0s;
}

.shape-2 {
  width: 150px;
  height: 150px;
  top: 60%;
  right: 15%;
  animation-delay: 2s;
}

.shape-3 {
  width: 100px;
  height: 100px;
  bottom: 20%;
  left: 20%;
  animation-delay: 4s;
}

@media (max-width: 1024px) {
  .hero-content {
    grid-template-columns: 1fr;
    gap: var(--space-12);
    text-align: center;
  }
  
  .hero-title {
    font-size: var(--text-5xl);
  }
  
  .hero-description {
    font-size: var(--text-lg);
  }
  
  .floating-card {
    display: none;
  }
}

@media (max-width: 768px) {
  .hero-container {
    padding: 0 var(--space-4);
  }
  
  .hero-title {
    font-size: var(--text-4xl);
  }
  
  .hero-description {
    font-size: var(--text-base);
  }
  
  .hero-cta {
    flex-direction: column;
    align-items: center;
  }
  
  .hero-stats {
    justify-content: center;
    gap: var(--space-6);
  }
}

/* ==========================================================================
   Features Section
   ========================================================================== */

.features {
  padding: var(--space-24) 0;
  background: var(--white);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-8);
}

.feature-category {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  border: 1px solid var(--gray-100);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.feature-category::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color) 0%, var(--secondary-color) 100%);
}

.feature-category:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
}

.category-header {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.category-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: var(--text-2xl);
}

.category-title {
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--gray-900);
  margin: 0;
}

.feature-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.feature-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  transition: background-color var(--transition-fast);
}

.feature-item:hover {
  background: var(--gray-50);
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: var(--text-lg);
  flex-shrink: 0;
}

.feature-content h4 {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: var(--space-1);
}

.feature-content p {
  font-size: var(--text-sm);
  color: var(--gray-600);
  margin: 0;
  line-height: 1.5;
}

@media (max-width: 768px) {
  .features-grid {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
  
  .feature-category {
    padding: var(--space-6);
  }
}

/* ==========================================================================
   Screenshots Section
   ========================================================================== */

.screenshots {
  padding: var(--space-24) 0;
  background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
}

.screenshots-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-8);
}

.screenshot-item {
  text-align: center;
}

.screenshot-frame {
  position: relative;
  background: var(--white);
  padding: var(--space-2);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-lg);
  margin-bottom: var(--space-4);
  transition: all var(--transition-normal);
  overflow: hidden;
}

.screenshot-frame:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
}

.screenshot-frame::before {
  content: '';
  position: absolute;
  top: var(--space-2);
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 6px;
  background: var(--gray-900);
  border-radius: var(--radius-full);
}

.screenshot-img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-xl);
  display: block;
}

.screenshot-info h4 {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: var(--space-2);
}

.screenshot-info p {
  font-size: var(--text-sm);
  color: var(--gray-600);
  margin: 0;
}

@media (max-width: 768px) {
  .screenshots-container {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
  }
}

@media (max-width: 480px) {
  .screenshots-container {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   Download Section
   ========================================================================== */

.download {
  padding: var(--space-24) 0;
  background: var(--white);
}

.download-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

.download-title {
  font-size: var(--text-4xl);
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: var(--space-4);
}

.download-description {
  font-size: var(--text-lg);
  color: var(--gray-600);
  margin-bottom: var(--space-8);
  line-height: 1.7;
}

.download-features {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}

.download-feature {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-base);
  color: var(--gray-700);
}

.download-feature i {
  color: var(--success);
  font-size: var(--text-lg);
}

.download-buttons {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.app-store-button img {
  height: 60px;
  transition: transform var(--transition-fast);
}

.app-store-button:hover img {
  transform: scale(1.05);
}

.qr-code {
  text-align: center;
}

.qr-img {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-md);
  margin-bottom: var(--space-2);
}

.qr-text {
  font-size: var(--text-sm);
  color: var(--gray-500);
}

.download-visual {
  text-align: center;
}

.download-phone {
  position: relative;
  max-width: 300px;
  margin: 0 auto;
}

.download-preview {
  width: 100%;
  height: auto;
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-2xl);
}

@media (max-width: 1024px) {
  .download-content {
    grid-template-columns: 1fr;
    gap: var(--space-12);
    text-align: center;
  }
  
  .download-features {
    justify-content: center;
  }
}

@media (max-width: 768px) {
  .download-features {
    grid-template-columns: 1fr;
  }
  
  .download-buttons {
    flex-direction: column;
    gap: var(--space-6);
  }
}

/* ==========================================================================
   Contact Section
   ========================================================================== */

.contact {
  padding: var(--space-24) 0;
  background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
}

.contact-content {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-16);
  align-items: start;
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.contact-method {
  display: flex;
  gap: var(--space-6);
  padding: var(--space-8);
  background: var(--white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
}

.contact-method:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.contact-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: var(--text-2xl);
  flex-shrink: 0;
}

.contact-info h4 {
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: var(--space-2);
}

.contact-info p {
  font-size: var(--text-base);
  color: var(--gray-600);
  margin-bottom: var(--space-3);
}

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

.contact-links {
  display: flex;
  gap: var(--space-4);
}

.contact-links a {
  color: var(--primary-color);
  font-weight: 500;
  text-decoration: underline;
}

.contact-qr {
  display: flex;
  justify-content: center;
}

.qr-container {
  text-align: center;
  background: var(--white);
  padding: var(--space-8);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
}

.contact-qr-img {
  width: 200px;
  height: 200px;
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-4);
}

.qr-container p {
  font-size: var(--text-base);
  color: var(--gray-700);
  font-weight: 500;
  margin: 0;
}

@media (max-width: 1024px) {
  .contact-content {
    grid-template-columns: 1fr;
    gap: var(--space-12);
  }
}

@media (max-width: 768px) {
  .contact-method {
    flex-direction: column;
    text-align: center;
    gap: var(--space-4);
  }
  
  .contact-qr-img {
    width: 150px;
    height: 150px;
  }
}

/* ==========================================================================
   Footer
   ========================================================================== */

.footer {
  background: var(--gray-900);
  color: var(--white);
  padding: var(--space-12) 0;
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.footer-logo-img {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
}

.footer-logo-text {
  font-size: var(--text-xl);
  font-weight: 700;
}

.footer-text p {
  margin: 0;
  color: var(--gray-400);
  font-size: var(--text-sm);
}

.footer-links {
  display: flex;
  gap: var(--space-6);
}

.footer-links a {
  color: var(--gray-400);
  font-size: var(--text-sm);
  transition: color var(--transition-fast);
}

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

@media (max-width: 768px) {
  .footer-content {
    flex-direction: column;
    text-align: center;
    gap: var(--space-6);
  }
  
  .footer-links {
    flex-wrap: wrap;
    justify-content: center;
  }
}

/* ==========================================================================
   Back to Top Button
   ========================================================================== */

.back-to-top {
  position: fixed;
  bottom: var(--space-8);
  right: var(--space-8);
  width: 50px;
  height: 50px;
  background: var(--primary-color);
  color: var(--white);
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  font-size: var(--text-lg);
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-fast);
  opacity: 0;
  visibility: hidden;
  z-index: var(--z-fixed);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

/* ==========================================================================
   Animations
   ========================================================================== */

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes float {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-10px);
  }
}

/* AOS Animation Overrides */
[data-aos="fade-up"] {
  transform: translate3d(0, 50px, 0);
  opacity: 0;
}

[data-aos="fade-up"].aos-animate {
  transform: translate3d(0, 0, 0);
  opacity: 1;
}

/* ==========================================================================
   Utility Classes
   ========================================================================== */

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.hidden { display: none; }
.visible { display: block; }

.mt-0 { margin-top: 0; }
.mt-4 { margin-top: var(--space-4); }
.mt-8 { margin-top: var(--space-8); }

.mb-0 { margin-bottom: 0; }
.mb-4 { margin-bottom: var(--space-4); }
.mb-8 { margin-bottom: var(--space-8); }

.p-4 { padding: var(--space-4); }
.p-8 { padding: var(--space-8); }

.rounded { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }

/* ==========================================================================
   Print Styles
   ========================================================================== */

@media print {
  * {
    background: transparent !important;
    color: black !important;
    box-shadow: none !important;
    text-shadow: none !important;
  }
  
  .navbar,
  .back-to-top,
  .floating-elements {
    display: none !important;
  }
  
  body {
    font-size: 12pt;
    line-height: 1.5;
  }
  
  h1, h2, h3, h4, h5, h6 {
    page-break-after: avoid;
  }
}
/* 微信下载弹窗样式 */