/**
 * ZenNudge Marketing Landing Page Styles
 * =======================================
 * Based on Zen Nudge Design System v2.2.0
 * Mobile-first, accessible, performance-optimized
 */

/* ==========================================================================
   CSS VARIABLES (Design System Tokens)
   ========================================================================== */

:root {
  /* Colors - Primary (Zen Teal) */
  --color-primary-50: #EFF5F6;
  --color-primary-100: #DEECED;
  --color-primary-200: #C6DDE0;
  --color-primary-300: #A5CACE;
  --color-primary-400: #5B9EA6;
  --color-primary-500: #4D868D;
  --color-primary-600: #406F74;
  --color-primary-700: #32575B;
  --color-primary-800: #243F42;
  --color-primary-900: #17282A;

  /* Colors - Secondary (Nudge Slate) */
  --color-secondary-50: #EBEFF1;
  --color-secondary-100: #D7DEE2;
  --color-secondary-200: #B9C6CD;
  --color-secondary-300: #90A5B0;
  --color-secondary-400: #365C70;
  --color-secondary-500: #2E4E5F;
  --color-secondary-600: #26404E;
  --color-secondary-700: #1E333E;
  --color-secondary-800: #16252D;
  --color-secondary-900: #0E171C;

  /* Colors - Accent (Goal Gold) */
  --color-accent-50: #FCF7EE;
  --color-accent-100: #F9EFDD;
  --color-accent-200: #F5E3C3;
  --color-accent-300: #EFD4A0;
  --color-accent-400: #E2B053;
  --color-accent-500: #C09647;
  --color-accent-600: #9E7B3A;
  --color-accent-700: #7C612E;
  --color-accent-800: #5A4621;
  --color-accent-900: #382C15;

  /* Colors - Accent Light (Path Aqua) */
  --color-accent-light-50: #F5FAFB;
  --color-accent-light-100: #EBF6F7;
  --color-accent-light-200: #DCEFF2;
  --color-accent-light-300: #C7E6EA;
  --color-accent-light-400: #9AD1D9;
  --color-accent-light-500: #83B2B8;
  --color-accent-light-600: #6C9298;
  --color-accent-light-700: #557377;
  --color-accent-light-800: #3E5457;
  --color-accent-light-900: #263436;

  /* Colors - Neutral */
  --color-neutral-50: #F0F7FA;
  --color-neutral-100: #DCE4E9;
  --color-neutral-200: #C9D2D8;
  --color-neutral-300: #ABB6BE;
  --color-neutral-400: #8E9AA5;
  --color-neutral-500: #7A8894;
  --color-neutral-600: #677683;
  --color-neutral-700: #536372;
  --color-neutral-800: #405061;
  --color-neutral-900: #2C3E50;

  /* Semantic Colors */
  --color-success: #30B350;
  --color-warning: #FFCC00;
  --color-error: #FF3B30;
  --color-info: #007AFF;

  /* Background & Surface */
  --color-background: #F0F7FA;
  --color-surface: #FFFFFF;
  --color-surface-muted: #DCE4E9;

  /* Text */
  --color-text-primary: #2C3E50;
  --color-text-secondary: #365C70;
  --color-text-muted: #677683;
  --color-text-inverse: #F0F7FA;
  --color-link: #406F74;
  --color-link-hover: #32575B;
  --color-link-visited: #32575B;
  --color-text-on-primary: #2C3E50;
  --color-text-on-secondary: #F0F7FA;
  --color-text-on-accent: #2C3E50;

  /* Typography */
  --font-family-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', Roboto, 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;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.625;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.25rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(44, 62, 80, 0.1), 0 1px 2px rgba(44, 62, 80, 0.06);
  --shadow-md: 0 4px 6px rgba(44, 62, 80, 0.1), 0 2px 4px rgba(44, 62, 80, 0.06);
  --shadow-lg: 0 10px 15px rgba(44, 62, 80, 0.1), 0 4px 6px rgba(44, 62, 80, 0.05);
  --shadow-xl: 0 20px 25px rgba(44, 62, 80, 0.1), 0 10px 10px rgba(44, 62, 80, 0.04);
  --shadow-primary: 0 4px 14px rgba(91, 158, 166, 0.4);
  --shadow-accent: 0 4px 14px rgba(226, 176, 83, 0.4);

  /* Transitions */
  --duration-fast: 150ms;
  --duration-normal: 250ms;
  --ease-out: cubic-bezier(0, 0, 0.2, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);

  /* Layout */
  --container-max: 1200px;
  --touch-target-min: 44px;

  /* Phone Mockup */
  --color-phone-frame: #1a1a1a;
  --color-phone-frame-light: #2d2d2d;
  --color-phone-notch: #000000;

  /* Progress bar gradient */
  --color-success-light: #4ADE80;

  /* Header background with transparency */
  --color-header-bg: rgba(240, 247, 250, 0.95);
}

/* ==========================================================================
   BASE STYLES
   ========================================================================== */

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

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

body {
  font-family: var(--font-family-sans);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--color-link);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out);
}

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

a:focus-visible {
  outline: 2px solid var(--color-primary-400);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* ==========================================================================
   LAYOUT
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

@media (min-width: 768px) {
  .container {
    padding: 0 var(--space-6);
  }
}

@media (min-width: 1024px) {
  .container {
    padding: 0 var(--space-8);
  }
}

/* ==========================================================================
   HEADER
   ========================================================================== */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1030;
  background-color: var(--color-header-bg);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-neutral-200);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  display: flex;
  align-items: center;
}

.logo:hover {
  opacity: 0.9;
}

.logo-img {
  height: 36px;
  width: auto;
}

.nav {
  display: none;
  gap: var(--space-8);
}

@media (min-width: 768px) {
  .nav {
    display: flex;
  }
}

.nav-link {
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-sm);
  padding: var(--space-2) 0;
}

.nav-link:hover {
  color: var(--color-primary-500);
}

.mobile-menu-btn {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
  background: none;
  border: none;
  cursor: pointer;
  min-width: var(--touch-target-min);
  min-height: var(--touch-target-min);
  align-items: center;
  justify-content: center;
}

.mobile-menu-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-text-primary);
  border-radius: var(--radius-full);
  transition: all var(--duration-fast) var(--ease-out);
}

.mobile-menu-btn.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-btn.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

@media (min-width: 768px) {
  .mobile-menu-btn {
    display: none;
  }
}

/* Mobile Nav */
.nav.mobile-open {
  display: flex;
  flex-direction: column;
  position: absolute;
  top: 64px;
  left: 0;
  right: 0;
  background-color: var(--color-surface);
  padding: var(--space-4);
  gap: var(--space-4);
  border-bottom: 1px solid var(--color-neutral-200);
  box-shadow: var(--shadow-lg);
}

/* ==========================================================================
   BUTTONS
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-family-sans);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  line-height: 1;
  text-decoration: none;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  min-height: var(--touch-target-min);
  transition: all var(--duration-fast) var(--ease-out);
}

.btn:focus-visible {
  outline: 2px solid var(--color-primary-400);
  outline-offset: 2px;
}

.btn-primary {
  background-color: var(--color-accent-400);
  color: var(--color-text-on-accent);
  box-shadow: var(--shadow-accent);
}

.btn-primary:hover {
  background-color: var(--color-accent-500);
  color: var(--color-text-on-accent);
  box-shadow: 0 6px 20px rgba(226, 176, 83, 0.45);
  transform: translateY(-2px);
}

.btn-primary:active {
  background-color: var(--color-accent-600);
  color: var(--color-text-on-accent);
  transform: translateY(0);
}

.btn-large {
  padding: var(--space-4) var(--space-8);
  font-size: var(--font-size-lg);
  min-height: 56px;
}

.app-store-badge {
  display: inline-block;
  transition: transform var(--duration-fast) var(--ease-out);
  border-radius: var(--radius-md);
}

.app-store-badge:hover {
  transform: translateY(-2px);
}

.app-store-badge:focus-visible {
  outline: 2px solid var(--color-primary-400);
  outline-offset: 4px;
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */

.hero {
  padding-top: calc(64px + var(--space-16));
  padding-bottom: var(--space-16);
  background: linear-gradient(180deg, var(--color-background) 0%, var(--color-accent-light-200) 100%);
}

.hero-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-12);
}

@media (min-width: 1024px) {
  .hero-container {
    flex-direction: row;
    justify-content: space-between;
    gap: var(--space-16);
  }
}

.hero-content {
  text-align: center;
  max-width: 560px;
}

@media (min-width: 1024px) {
  .hero-content {
    text-align: left;
    flex: 1;
  }
}

.hero-title {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-text-primary);
  margin-bottom: var(--space-6);
  text-wrap: balance;
}

@media (min-width: 768px) {
  .hero-title {
    font-size: var(--font-size-4xl);
  }
}

@media (min-width: 1024px) {
  .hero-title {
    font-size: var(--font-size-5xl);
  }
}

.hero-subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-8);
}

.hero-cta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
}

@media (min-width: 1024px) {
  .hero-cta {
    align-items: flex-start;
  }
}

/* Phone Mockup */
.hero-image {
  flex-shrink: 0;
}

.phone-mockup {
  width: 280px;
  height: 560px;
  background: linear-gradient(145deg, var(--color-phone-frame) 0%, var(--color-phone-frame-light) 100%);
  border-radius: 40px;
  padding: 12px;
  box-shadow: var(--shadow-xl), 0 0 0 1px rgba(255, 255, 255, 0.1);
  position: relative;
}

.phone-mockup::before {
  content: '';
  position: absolute;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 24px;
  background: var(--color-phone-notch);
  border-radius: 12px;
}

.phone-screen {
  width: 100%;
  height: 100%;
  background: var(--color-background);
  border-radius: 32px;
  overflow: hidden;
  padding: var(--space-4);
  padding-top: var(--space-12);
}

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

.app-header {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding-bottom: var(--space-4);
}

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

.app-balance {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
}

.app-card {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  padding: var(--space-4);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-neutral-200);
}

.goal-item {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
}

.goal-icon {
  color: var(--color-success);
  flex-shrink: 0;
}

.goal-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.goal-name {
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
}

.goal-progress {
  height: 6px;
  background: var(--color-neutral-200);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--color-success), var(--color-success-light));
  border-radius: var(--radius-full);
}

.goal-amount {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

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

.bill-icon {
  color: var(--color-warning);
  flex-shrink: 0;
}

.bill-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.bill-name {
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
}

.bill-due {
  font-size: var(--font-size-xs);
  color: var(--color-warning);
  font-weight: var(--font-weight-medium);
}

.bill-amount {
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
}

/* ==========================================================================
   STATS BAR
   ========================================================================== */

.stats-bar {
  background: var(--color-secondary-700);
  padding: var(--space-12) 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
}

@media (min-width: 768px) {
  .stats-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
  }
}

.stat-card {
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.stat-number {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-accent-400);
  line-height: 1;
}

@media (min-width: 768px) {
  .stat-number {
    font-size: var(--font-size-5xl);
  }
}

.stat-label {
  font-size: var(--font-size-base);
  color: var(--color-text-inverse);
  line-height: var(--line-height-normal);
}

.stat-source {
  font-size: var(--font-size-xs);
  color: var(--color-neutral-200);
}

/* ==========================================================================
   PROBLEM SECTION
   ========================================================================== */

.problem-section {
  padding: var(--space-20) 0;
  background: var(--color-surface);
}

.problem-content {
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}

.section-title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-6);
  text-align: center;
  text-wrap: balance;
}

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

.problem-text {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-4);
}

.problem-text:last-child {
  margin-bottom: 0;
}

/* ==========================================================================
   FEATURES SECTION
   ========================================================================== */

.features-section {
  padding: var(--space-20) 0;
  background: var(--color-neutral-50);
}

.section-subtitle {
  text-align: center;
  font-size: var(--font-size-lg);
  color: var(--color-text-muted);
  margin-bottom: var(--space-12);
}


.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
}

@media (min-width: 768px) {
  .features-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
  }
}

.feature-card {
  background: var(--color-surface);
  padding: var(--space-8);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-neutral-200);
  text-align: center;
  transition: all var(--duration-normal) var(--ease-out);
}

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

.feature-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-4);
  background: var(--color-accent-light-100);
  border-radius: var(--radius-xl);
  color: var(--color-primary-600);
}

.feature-icon svg {
  width: 32px;
  height: 32px;
}

.feature-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-3);
}

.feature-description {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-4);
}

.feature-outcome {
  display: inline-block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-success);
  padding: var(--space-2) var(--space-4);
  background: rgba(48, 179, 80, 0.1);
  border-radius: var(--radius-full);
}

/* ==========================================================================
   HOW IT WORKS
   ========================================================================== */

.how-it-works {
  padding: var(--space-20) 0;
  background: var(--color-surface);
}

.steps-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  margin-top: var(--space-12);
}

@media (min-width: 768px) {
  .steps-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
  }
}

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

@media (min-width: 768px) {
  .step-card:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 40px;
    right: -12px;
    width: 24px;
    height: 2px;
    background: var(--color-neutral-300);
  }
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--color-primary-400) 0%, var(--color-primary-500) 100%);
  color: var(--color-text-primary);
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-4);
  box-shadow: var(--shadow-primary);
}

.step-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-3);
}

.step-description {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

/* ==========================================================================
   TRUST SECTION
   ========================================================================== */

.trust-section {
  padding: var(--space-20) 0;
  background: var(--color-neutral-50);
}

.trust-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  margin-top: var(--space-12);
}

@media (min-width: 768px) {
  .trust-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.trust-card {
  background: var(--color-surface);
  padding: var(--space-6);
  border-radius: var(--radius-xl);
  text-align: center;
  border: 1px solid var(--color-neutral-200);
}

.trust-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  margin: 0 auto var(--space-4);
  background: var(--color-accent-light-100);
  border-radius: var(--radius-full);
  color: var(--color-secondary-400);
}

.trust-icon svg {
  width: 28px;
  height: 28px;
}

.trust-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.trust-description {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

.trust-footer {
  text-align: center;
  margin-top: var(--space-8);
}

.trust-link {
  font-weight: var(--font-weight-medium);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* ==========================================================================
   FINAL CTA
   ========================================================================== */

.final-cta {
  padding: var(--space-24) 0;
  background: linear-gradient(180deg, var(--color-surface) 0%, var(--color-accent-light-100) 100%);
  text-align: center;
}

.cta-title {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
  text-wrap: balance;
}

@media (min-width: 768px) {
  .cta-title {
    font-size: var(--font-size-4xl);
  }
}

.cta-subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-10);
}

.cta-buttons {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
}

/* ==========================================================================
   FOOTER
   ========================================================================== */

.footer {
  background: var(--color-secondary-400);
  padding: var(--space-12) 0 var(--space-8);
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-6);
  padding-bottom: var(--space-8);
  border-bottom: 1px solid var(--color-secondary-500);
}

@media (min-width: 768px) {
  .footer-content {
    flex-direction: row;
    justify-content: space-between;
  }
}

.footer-brand {
  display: flex;
  align-items: center;
}

.footer-brand .logo-img {
  height: 32px;
  width: auto;
  filter: brightness(0) invert(1);
}

.footer-nav {
  display: flex;
  gap: var(--space-6);
  flex-wrap: wrap;
  justify-content: center;
}

.footer-link {
  color: var(--color-neutral-100);
  font-size: var(--font-size-sm);
}

.footer-link:hover {
  color: var(--color-text-inverse);
}

.footer-bottom {
  padding-top: var(--space-8);
  text-align: center;
}

.copyright {
  color: var(--color-neutral-200);
  font-size: var(--font-size-sm);
}

/* ==========================================================================
   UTILITIES
   ========================================================================== */

/* Screen reader only */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Skip link for keyboard navigation */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  z-index: 9999;
  padding: var(--space-3) var(--space-6);
  background-color: var(--color-primary-400);
  color: var(--color-text-primary);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: top var(--duration-fast) var(--ease-out);
}

.skip-link:focus {
  top: var(--space-4);
  outline: 2px solid var(--color-primary-600);
  outline-offset: 2px;
}

/* Focus visible for keyboard navigation */
:focus:not(:focus-visible) {
  outline: none;
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ==========================================================================
   LEGAL PAGES (Privacy, Terms, Support)
   ========================================================================== */

.legal-page {
  padding-top: calc(64px + var(--space-12));
  padding-bottom: var(--space-16);
  background: var(--color-background);
  min-height: 100vh;
}

.legal-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

@media (min-width: 768px) {
  .legal-container {
    padding: 0 var(--space-6);
  }
}

.legal-header {
  margin-bottom: var(--space-10);
  padding-bottom: var(--space-6);
  border-bottom: 1px solid var(--color-neutral-200);
}

.legal-title {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

@media (min-width: 768px) {
  .legal-title {
    font-size: var(--font-size-4xl);
  }
}

.legal-effective-date {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.legal-content h2 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-top: var(--space-10);
  margin-bottom: var(--space-4);
}

@media (min-width: 768px) {
  .legal-content h2 {
    font-size: var(--font-size-2xl);
  }
}

.legal-content h3 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-top: var(--space-6);
  margin-bottom: var(--space-3);
}

.legal-content p {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-4);
}

.legal-content ul,
.legal-content ol {
  margin-bottom: var(--space-4);
  padding-left: var(--space-6);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

.legal-content li {
  margin-bottom: var(--space-2);
}

.legal-content a {
  color: var(--color-link);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.legal-content a:hover {
  color: var(--color-link-hover);
}

.legal-content strong {
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

.legal-content .highlight-box {
  background: var(--color-neutral-50);
  border-left: 4px solid var(--color-primary-400);
  padding: var(--space-4) var(--space-5);
  margin: var(--space-6) 0;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.legal-content .highlight-box p {
  margin-bottom: 0;
}

.legal-content .data-table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-6) 0;
  font-size: var(--font-size-sm);
}

.legal-content .data-table th,
.legal-content .data-table td {
  padding: var(--space-3) var(--space-4);
  text-align: left;
  border-bottom: 1px solid var(--color-neutral-200);
}

.legal-content .data-table th {
  background: var(--color-neutral-50);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

.legal-content .data-table td {
  color: var(--color-text-secondary);
}

.legal-content .data-table tr:last-child td {
  border-bottom: none;
}

@media (max-width: 640px) {
  .legal-content .data-table {
    display: block;
    overflow-x: auto;
  }
}

.legal-toc {
  background: var(--color-neutral-50);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  margin-bottom: var(--space-8);
}

.legal-toc-title {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-3);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.legal-toc-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.legal-toc-list li {
  margin-bottom: var(--space-2);
}

.legal-toc-list a {
  font-size: var(--font-size-sm);
  color: var(--color-link);
  text-decoration: none;
}

.legal-toc-list a:hover {
  text-decoration: underline;
}

/* Support Page Specific Styles */
.support-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  margin-top: var(--space-8);
}

@media (min-width: 768px) {
  .support-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.support-card {
  background: var(--color-surface);
  border: 1px solid var(--color-neutral-200);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  transition: all var(--duration-normal) var(--ease-out);
}

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

.support-card-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: var(--color-primary-50);
  border-radius: var(--radius-lg);
  color: var(--color-primary-500);
  margin-bottom: var(--space-4);
}

.support-card-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.support-card-description {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-4);
}

.support-card-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-primary-500);
}

.support-card-link:hover {
  color: var(--color-primary-600);
}

.support-card-link svg {
  width: 16px;
  height: 16px;
}

.faq-section {
  margin-top: var(--space-12);
}

.faq-item {
  border-bottom: 1px solid var(--color-neutral-200);
  padding: var(--space-5) 0;
}

.faq-item:first-child {
  border-top: 1px solid var(--color-neutral-200);
}

.faq-question {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.faq-answer {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

.contact-section {
  background: var(--color-neutral-50);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  margin-top: var(--space-12);
  text-align: center;
}

.contact-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-3);
}

.contact-description {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-6);
}

.contact-email {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
  color: var(--color-primary-500);
}

.contact-email:hover {
  color: var(--color-primary-600);
}