/* Customer Gravity Brand System */

/* ============================================
   CSS VARIABLES - 8pt spacing system
   ============================================ */
:root {
  /* Core Neutrals */
  --color-gravity-black: #0B0F14;
  --color-deep-slate: #151C24;
  --color-steel-ink: #2A3440;
  --color-fog-gray: #AAB4BE;
  --color-signal-white: #F3F5F7;
  
  /* Signal Spectrum */
  --color-trust-green: #31C26A;
  --color-alignment-lime: #A6E64B;
  --color-momentum-amber: #FFB020;
  --color-pressure-orange: #FF6A2A;
  --color-risk-red: #E03B2F;
  
  /* Typography */
  --font-primary: 'Space Grotesk', sans-serif;
  --font-secondary: 'Inter', sans-serif;
  
  /* Type Scale */
  --text-h1: 48px;
  --text-h1-line: 56px;
  --text-h2: 32px;
  --text-h2-line: 40px;
  --text-h3: 24px;
  --text-h3-line: 32px;
  --text-body: 16px;
  --text-body-line: 24px;
  --text-small: 13px;
  --text-small-line: 20px;
  --text-micro: 11px;
  --text-micro-line: 16px;
  
  /* Spacing - 8pt system */
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-5: 40px;
  --space-6: 48px;
  --space-8: 64px;
  --space-10: 80px;
  --space-12: 96px;
  
  /* Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  
  /* Shadows */
  --shadow-card: 0 2px 8px rgba(11, 15, 20, 0.12);
  --shadow-hover: 0 4px 12px rgba(11, 15, 20, 0.16);
  
  /* Layout */
  --container-max: 1200px;
  --container-narrow: 800px;
}

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

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

body {
  font-family: var(--font-secondary);
  font-size: var(--text-body);
  line-height: var(--text-body-line);
  color: var(--color-deep-slate);
  background: var(--color-signal-white);
}

/* ============================================
   TYPOGRAPHY
   ============================================ */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-primary);
  font-weight: 700;
  margin: 0;
}

h1 {
  font-size: var(--text-h1);
  line-height: var(--text-h1-line);
  font-weight: 700;
}

h2 {
  font-size: var(--text-h2);
  line-height: var(--text-h2-line);
  font-weight: 600;
}

h3 {
  font-size: var(--text-h3);
  line-height: var(--text-h3-line);
  font-weight: 600;
}

p {
  margin: 0;
}

a {
  color: var(--color-trust-green);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--color-alignment-lime);
}

a:focus-visible {
  outline: 2px solid var(--color-trust-green);
  outline-offset: 2px;
}

/* Mobile-first responsive typography */
@media (max-width: 768px) {
  :root {
    --text-h1: 32px;
    --text-h1-line: 40px;
    --text-h2: 24px;
    --text-h2-line: 32px;
    --text-h3: 20px;
    --text-h3-line: 28px;
  }
}

/* ============================================
   LAYOUT SYSTEM
   ============================================ */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-3);
}

.container-narrow {
  max-width: var(--container-narrow);
}

.section {
  padding: var(--space-8) 0;
}

.section-large {
  padding: var(--space-10) 0;
}

@media (max-width: 768px) {
  .section {
    padding: var(--space-6) 0;
  }
  
  .section-large {
    padding: var(--space-8) 0;
  }
}

/* ============================================
   HEADER
   ============================================ */
.site-header {
  background: var(--color-gravity-black);
  border-bottom: 1px solid var(--color-steel-ink);
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-2) var(--space-3);
  max-width: var(--container-max);
  margin: 0 auto;
}

.site-header__logo {
  font-family: var(--font-primary);
  font-size: 20px;
  font-weight: 700;
  color: var(--color-signal-white);
  text-decoration: none;
  letter-spacing: -0.02em;
}

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

.site-header__link {
  font-family: var(--font-secondary);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-fog-gray);
  text-decoration: none;
  transition: color 0.2s ease;
  letter-spacing: 0.02em;
}

.site-header__link:hover {
  color: var(--color-signal-white);
}

.site-header__link--active {
  color: var(--color-trust-green);
}

@media (max-width: 768px) {
  .site-header__nav {
    gap: var(--space-2);
  }
  
  .site-header__link {
    font-size: 13px;
  }
}

/* ============================================
   FOOTER
   ============================================ */
.site-footer {
  background: var(--color-deep-slate);
  color: var(--color-fog-gray);
  margin-top: auto;
}

.site-footer__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--space-6) var(--space-3) var(--space-4);
}

.site-footer__links {
  display: flex;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
  flex-wrap: wrap;
}

.site-footer__link {
  font-size: var(--text-small);
  color: var(--color-fog-gray);
  text-decoration: none;
}

.site-footer__link:hover {
  color: var(--color-signal-white);
}

.site-footer__text {
  font-size: var(--text-small);
  line-height: var(--text-small-line);
  color: var(--color-fog-gray);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
  text-align: center;
  padding: var(--space-10) var(--space-3);
}

.hero--dark {
  background: var(--color-gravity-black);
  color: var(--color-signal-white);
}

.hero__title {
  color: inherit;
  margin-bottom: var(--space-2);
}

.hero__subtitle {
  font-size: var(--text-h3);
  line-height: var(--text-h3-line);
  font-weight: 400;
  color: var(--color-fog-gray);
  margin-bottom: var(--space-3);
}

.hero__body {
  max-width: 700px;
  margin: 0 auto var(--space-4);
  color: var(--color-fog-gray);
}

.hero__actions {
  display: flex;
  gap: var(--space-2);
  justify-content: center;
  flex-wrap: wrap;
}

@media (max-width: 768px) {
  .hero {
    padding: var(--space-6) var(--space-3);
  }
  
  .hero__actions {
    flex-direction: column;
    align-items: stretch;
  }
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-block;
  font-family: var(--font-secondary);
  font-size: var(--text-body);
  font-weight: 500;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s ease;
  text-align: center;
}

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

.btn--primary {
  background: var(--color-trust-green);
  color: var(--color-gravity-black);
}

.btn--primary:hover {
  background: var(--color-alignment-lime);
  color: var(--color-gravity-black);
}

.btn--secondary {
  background: transparent;
  color: var(--color-signal-white);
  border: 1px solid var(--color-steel-ink);
}

.btn--secondary:hover {
  border-color: var(--color-fog-gray);
  color: var(--color-signal-white);
}

.btn--large {
  padding: var(--space-2) var(--space-5);
  font-size: 18px;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ============================================
   CHOICE CARDS
   ============================================ */
.choice-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-4);
  max-width: 900px;
  margin: 0 auto;
}

.choice-card {
  background: var(--color-signal-white);
  border: 2px solid var(--color-steel-ink);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  text-align: center;
  transition: all 0.2s ease;
  text-decoration: none;
  color: inherit;
  display: block;
}

.choice-card:hover {
  border-color: var(--color-trust-green);
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.choice-card__icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-3);
}

.choice-card__title {
  font-size: var(--text-h3);
  line-height: var(--text-h3-line);
  margin-bottom: var(--space-2);
  color: var(--color-gravity-black);
}

.choice-card__description {
  color: var(--color-steel-ink);
}

@media (max-width: 768px) {
  .choice-cards {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   FEATURE LIST
   ============================================ */
.feature-list {
  list-style: none;
  padding: 0;
}

.feature-list__item {
  padding: var(--space-2) 0;
  padding-left: var(--space-4);
  position: relative;
}

.feature-list__item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 6px;
  background: var(--color-trust-green);
  border-radius: 50%;
}

/* ============================================
   CONTENT SECTIONS
   ============================================ */
.content-section {
  margin-bottom: var(--space-8);
}

.content-section__title {
  margin-bottom: var(--space-3);
  color: var(--color-gravity-black);
}

.content-section__body {
  color: var(--color-steel-ink);
}

.content-section__body p + p {
  margin-top: var(--space-2);
}

/* ============================================
   CTA CARD
   ============================================ */
.cta-card {
  background: var(--color-deep-slate);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  text-align: center;
  margin: var(--space-8) 0;
}

.cta-card__title {
  color: var(--color-signal-white);
  margin-bottom: var(--space-2);
}

.cta-card__description {
  color: var(--color-fog-gray);
  margin-bottom: var(--space-4);
}

/* ============================================
   FORMS
   ============================================ */
.form {
  max-width: 600px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: var(--space-3);
}

.form-label {
  display: block;
  font-family: var(--font-secondary);
  font-size: var(--text-small);
  font-weight: 500;
  color: var(--color-steel-ink);
  margin-bottom: var(--space-1);
  letter-spacing: 0.02em;
}

.form-label--required::after {
  content: '*';
  color: var(--color-risk-red);
  margin-left: 4px;
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  font-family: var(--font-secondary);
  font-size: var(--text-body);
  padding: var(--space-2);
  border: 1px solid var(--color-fog-gray);
  border-radius: var(--radius-sm);
  background: var(--color-signal-white);
  color: var(--color-gravity-black);
  transition: border-color 0.2s ease;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-trust-green);
  box-shadow: 0 0 0 3px rgba(49, 194, 106, 0.1);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

.form-error {
  color: var(--color-risk-red);
  font-size: var(--text-small);
  margin-top: var(--space-1);
}

.form-help {
  font-size: var(--text-small);
  color: var(--color-fog-gray);
  margin-top: var(--space-1);
}

.validation-summary {
  background: rgba(224, 59, 47, 0.1);
  border-left: 4px solid var(--color-risk-red);
  padding: var(--space-2);
  margin-bottom: var(--space-3);
  border-radius: var(--radius-sm);
}

.validation-summary ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.validation-summary li {
  color: var(--color-risk-red);
  font-size: var(--text-small);
  padding: 4px 0;
}

/* ============================================
   CARDS
   ============================================ */
.card {
  background: var(--color-signal-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: var(--space-5);
}

/* ============================================
   UTILITIES
   ============================================ */
.text-center {
  text-align: center;
}

.mb-2 { margin-bottom: var(--space-2); }
.mb-3 { margin-bottom: var(--space-3); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }

.mt-2 { margin-top: var(--space-2); }
.mt-3 { margin-top: var(--space-3); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }

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

/* Focus visible styles */
*:focus-visible {
  outline: 2px solid var(--color-trust-green);
  outline-offset: 2px;
}

/* ============================================
   SOFT LAUNCH BANNER
   ============================================ */
.soft-launch-banner {
  background: var(--color-momentum-amber);
  color: var(--color-gravity-black);
  position: relative;
  z-index: 50;
}

.soft-launch-banner__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--space-2) var(--space-3);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
}

.soft-launch-banner__content {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.soft-launch-banner__badge {
  font-family: var(--font-secondary);
  font-size: var(--text-micro);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: var(--color-gravity-black);
  color: var(--color-momentum-amber);
  padding: 4px 8px;
  border-radius: 4px;
}

.soft-launch-banner__text {
  font-family: var(--font-secondary);
  font-size: var(--text-small);
  font-weight: 500;
  color: var(--color-gravity-black);
}

.soft-launch-banner__close {
  background: transparent;
  border: none;
  color: var(--color-gravity-black);
  cursor: pointer;
  padding: var(--space-1);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  transition: background-color 0.2s ease;
  flex-shrink: 0;
}

.soft-launch-banner__close:hover {
  background: rgba(11, 15, 20, 0.1);
}

.soft-launch-banner__close:focus-visible {
  outline: 2px solid var(--color-gravity-black);
  outline-offset: 2px;
}

@media (max-width: 768px) {
  .soft-launch-banner__inner {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-1);
  }

  .soft-launch-banner__close {
    position: absolute;
    top: var(--space-1);
    right: var(--space-1);
  }
}

/* ============================================
   MAIN LAYOUT
   ============================================ */
.site-layout {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.site-main {
  flex: 1;
}