/* ========================================================
   HYMETHOD DESIGN SYSTEM & BRAND TOKENS
   Precision Timing & Telemetry System
   ======================================================== */

:root {
  /* Color Tokens */
  --ink: #0B0B0C;
  --graphite: #141417;
  --steel: #232328;
  --steel-subtle: #2A2C31;
  --steel-hover: #373740;
  --bone: #F3F2EC;
  --volt: #CCFF00;
  --volt-hover: #B8E600;
  --text-on-dark: #FFFFFF;
  --text-muted-on-dark: #9EA2AB;
  --text-on-light: #0B0B0C;
  --text-muted-on-light: #4A4D55;
  /* Semantic Tokens (No emerald green: positive is Volt or white, warning is amber, error is red) */
  --color-success: #CCFF00;
  --color-success-bg: rgba(204, 255, 0, 0.12);
  --color-success-border: rgba(204, 255, 0, 0.3);
  --pace-green: #CCFF00;
  --pace-green-light: #CCFF00;
  --warning: #FBBF24;
  --warning-border: #D97706;
  --warning-bg: rgba(180, 83, 9, 0.15);
  --color-warning: #FBBF24;
  --color-warning-border: #D97706;
  --color-warning-bg: rgba(180, 83, 9, 0.15);
  --alert: #FF4D3D;
  --color-error: #FF4D3D;
  --color-error-border: #EF4444;
  --color-error-bg: rgba(239, 68, 68, 0.15);

  /* Typography Stacks */
  --font-display: 'Barlow Condensed', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-data: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;

  /* Spacing Grid (8px Base) */
  --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-14: 3.5rem; /* 56px mobile section gap */
  --space-16: 4rem;   /* 64px */
  --space-24: 6rem;   /* 96px desktop section gap */

  /* Radii - Sharp / Straight Corners (0-2px max) */
  --radius-card: 0px;
  --radius-input: 0px;
  --radius-pill: 2px;
  --radius-sharp: 0px;

  /* Layout */
  --container-max: 1200px;
  --gutter-mobile: 20px;

  /* Focus & Glow */
  --volt-glow: 0 0 16px rgba(204, 255, 0, 0.25);
  --volt-glow-sm: 0 0 8px rgba(204, 255, 0, 0.2);
  --volt-ring: 0 0 0 2px var(--ink), 0 0 0 4px var(--volt);
}

/* Base Document Styling */
html {
  background-color: var(--ink);
  color: var(--text-on-dark);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--ink);
  color: var(--text-on-dark);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Fluid Typography Clamp Scale */
.display-h1, h1.telemetry-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.75rem, 8vw, 6rem);
  line-height: 0.95;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  color: var(--text-on-dark);
}

.display-h2, h2.telemetry-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 5vw, 3.75rem);
  line-height: 0.98;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  color: var(--text-on-dark);
}

.display-h3, h3.telemetry-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  line-height: 1.1;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  color: var(--text-on-dark);
}

/* Data, telemetry, labels */
.telemetry-label, .font-telemetry {
  font-family: var(--font-data);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-variant-numeric: tabular-nums;
}

.telemetry-data-number {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  line-height: 1;
}

/* Volt Section Divider (4px high x 120px wide) */
.volt-divider {
  width: 120px;
  height: 4px;
  background-color: var(--volt);
  display: block;
  margin-block-end: 1rem;
}

.volt-divider.center {
  margin-inline: auto;
}

/* Section Containers */
.section-container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--gutter-mobile);
}

.section-spacing {
  padding-block: var(--space-14);
}

@media (min-width: 768px) {
  .section-spacing {
    padding-block: var(--space-24);
  }
}

/* Light / Bone Alternating Section */
.section-bone {
  background-color: var(--bone);
  color: var(--text-on-light);
}

.section-bone .display-h1,
.section-bone .display-h2,
.section-bone .display-h3 {
  color: var(--ink);
}

.section-bone .text-muted {
  color: var(--text-muted-on-light);
}

.section-bone .card-light {
  background-color: #FFFFFF;
  border: 1px solid #E2E1DA;
  border-radius: var(--radius-card);
}

.section-bone .pace-text {
  color: var(--pace-green-light);
}

/* Button System */
.btn-volt {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background-color: var(--volt);
  color: var(--ink) !important;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  height: 48px;
  min-height: 48px;
  padding-inline: 1.5rem;
  border-radius: var(--radius-sharp);
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: background-color 150ms ease, opacity 150ms ease;
  user-select: none;
}

.btn-volt:hover {
  background-color: var(--volt-hover);
  box-shadow: none;
}

.btn-volt:active {
  transform: translateY(1px);
}

.btn-volt:focus-visible {
  outline: none;
  box-shadow: var(--volt-ring);
}

.btn-volt:disabled,
.btn-volt[aria-disabled="true"] {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
  box-shadow: none;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background-color: transparent;
  color: var(--text-on-dark);
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  height: 48px;
  min-height: 48px;
  padding-inline: 1.25rem;
  border-radius: var(--radius-sharp);
  border: 1px solid var(--steel);
  cursor: pointer;
  text-decoration: none;
  transition: border-color 150ms ease, color 150ms ease, background-color 150ms ease;
}

.btn-secondary:hover {
  border-color: var(--steel-hover);
  color: #FFFFFF;
  background-color: var(--graphite);
}

.btn-secondary:focus-visible {
  outline: none;
  box-shadow: var(--volt-ring);
}

/* Small Button Variant */
.btn-volt-sm {
  height: 44px;
  min-height: 44px;
  padding-inline: 1rem;
  font-size: 13px;
  border-radius: var(--radius-sharp);
}

.btn-secondary-sm {
  height: 44px;
  min-height: 44px;
  padding-inline: 1rem;
  font-size: 13px;
  border-radius: var(--radius-sharp);
}

/* Card System */
.card-telemetry, .card-flat {
  background-color: var(--graphite);
  border: 1px solid var(--steel);
  border-radius: var(--radius-sharp);
  transition: border-color 150ms ease;
}

.card-telemetry:hover, .card-flat:hover {
  border-color: var(--steel-hover);
}

/* Athletic Utilities */
.field-athletic {
  background-color: var(--ink);
  border: 1px solid var(--steel);
  border-radius: var(--radius-sharp);
  color: #FFFFFF;
  font-family: var(--font-data);
  font-weight: 700;
  height: 44px;
  min-height: 44px;
  padding-inline: 0.75rem;
  transition: border-color 150ms ease;
}
.field-athletic:focus {
  outline: none;
  border-color: var(--volt);
}

.warning-strip {
  background-color: var(--warning-bg);
  border: 1px solid var(--warning-border);
  color: var(--warning);
  padding: 0.625rem 0.875rem;
  border-radius: var(--radius-sharp);
  font-size: 0.75rem;
  line-height: 1.4;
}

.card-pricing {
  background-color: var(--graphite);
  border: 1.5px solid var(--volt);
  border-radius: var(--radius-sharp);
  box-shadow: 0 0 32px rgba(204, 255, 0, 0.08);
  position: relative;
}

/* Tag & Badges */
.badge-volt {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0.65rem;
  background-color: rgba(204, 255, 0, 0.12);
  border: 1px solid rgba(204, 255, 0, 0.3);
  color: var(--volt);
  font-family: var(--font-data);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  border-radius: var(--radius-sharp);
}

.badge-volt .status-dot {
  width: 7px;
  height: 7px;
  border-radius: 0px;
  background-color: #CCFF00;
  box-shadow: 0 0 6px rgba(204, 255, 0, 0.8);
  flex-shrink: 0;
  animation: volt-pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

.badge-neutral {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.2rem 0.5rem;
  background-color: #141417;
  border: 1px solid #373740;
  color: #D1D5DB;
  font-family: var(--font-data);
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: 0px;
}

@keyframes volt-pulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.6;
    transform: scale(0.9);
  }
}

@media (prefers-reduced-motion: reduce) {
  .badge-volt .status-dot {
    animation: none;
    opacity: 1;
    transform: none;
  }
}

.badge-mock {
  display: inline-block;
  padding: 2px 6px;
  font-family: var(--font-data);
  font-size: 9px;
  font-weight: 800;
  color: #000;
  background-color: #F59E0B;
  border-radius: 3px;
  margin-inline-start: 6px;
  vertical-align: middle;
  letter-spacing: 0.05em;
}

/* Discreet Project Status Banner */
.dev-banner {
  background-color: rgba(245, 158, 11, 0.08);
  border-bottom: 1px solid rgba(245, 158, 11, 0.25);
  color: #FBBF24;
  font-family: var(--font-data);
  font-size: 11px;
  padding-block: 6px;
  padding-inline: 16px;
  line-height: 1.4;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.dev-banner-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: #FBBF24;
  animation: pulse-dot 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
}

/* Accessible FAQ Accordion */
.faq-item {
  border-bottom: 1px solid var(--steel);
}

.faq-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  text-align: left;
  background: transparent;
  border: none;
  padding-block: 1.5rem;
  color: var(--text-on-dark);
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2vw, 1.5rem);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: -0.01em;
  cursor: pointer;
  transition: color 0.15s ease;
}

.faq-trigger:hover {
  color: var(--volt);
}

.faq-trigger:focus-visible {
  outline: none;
  box-shadow: var(--volt-ring);
  border-radius: 8px;
}

.faq-icon {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--volt);
  flex-shrink: 0;
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.faq-trigger[aria-expanded="true"] .faq-icon {
  transform: rotate(45deg);
}

.faq-panel {
  padding-block-end: 1.5rem;
  color: var(--text-muted-on-dark);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.6;
}

.faq-panel[hidden] {
  display: none;
}

/* Multi-script Language Font Stacks */
html[lang="ru"] .display-h1,
html[lang="ru"] .display-h2,
html[lang="ru"] .display-h3,
html[lang="uk"] .display-h1,
html[lang="uk"] .display-h2,
html[lang="uk"] .display-h3,
html[lang="el"] .display-h1,
html[lang="el"] .display-h2,
html[lang="el"] .display-h3 {
  font-family: 'Roboto Condensed', sans-serif !important;
  font-weight: 700 !important;
}

/* CJK, Arabic, Hebrew, Hindi, Thai Rules */
html[lang="ja"] { font-family: 'Noto Sans JP', var(--font-body); }
html[lang="ja"] .display-h1,
html[lang="ja"] .display-h2,
html[lang="ja"] .display-h3,
html[lang="ja"] .telemetry-title {
  font-family: 'Noto Sans JP', sans-serif !important;
  text-transform: none !important;
  letter-spacing: normal !important;
  font-weight: 800 !important;
}

html[lang="zh"], html[lang="zh-CN"], html[lang="zh-TW"] { font-family: 'Noto Sans SC', var(--font-body); }
html[lang="zh"] .display-h1, html[lang="zh-CN"] .display-h1,
html[lang="zh"] .display-h2, html[lang="zh-CN"] .display-h2,
html[lang="zh"] .display-h3, html[lang="zh-CN"] .display-h3 {
  font-family: 'Noto Sans SC', sans-serif !important;
  text-transform: none !important;
  letter-spacing: normal !important;
  font-weight: 800 !important;
}

html[lang="ko"] { font-family: 'Noto Sans KR', var(--font-body); }
html[lang="ko"] .display-h1,
html[lang="ko"] .display-h2,
html[lang="ko"] .display-h3 {
  font-family: 'Noto Sans KR', sans-serif !important;
  text-transform: none !important;
  letter-spacing: normal !important;
  font-weight: 800 !important;
}

html[lang="ar"], html[dir="rtl"] {
  direction: rtl;
  font-family: 'Noto Sans Arabic', var(--font-body);
}

html[lang="ar"] .display-h1,
html[lang="ar"] .display-h2,
html[lang="ar"] .display-h3 {
  font-family: 'Noto Sans Arabic', sans-serif !important;
  text-transform: none !important;
  letter-spacing: normal !important;
  font-weight: 800 !important;
}

html[lang="he"] {
  direction: rtl;
  font-family: 'Noto Sans Hebrew', var(--font-body);
}

html[lang="he"] .display-h1,
html[lang="he"] .display-h2,
html[lang="he"] .display-h3 {
  font-family: 'Noto Sans Hebrew', sans-serif !important;
  text-transform: none !important;
  letter-spacing: normal !important;
  font-weight: 800 !important;
}

html[lang="hi"] { font-family: 'Noto Sans Devanagari', var(--font-body); }
html[lang="hi"] .display-h1,
html[lang="hi"] .display-h2,
html[lang="hi"] .display-h3 {
  font-family: 'Noto Sans Devanagari', sans-serif !important;
  text-transform: none !important;
  letter-spacing: normal !important;
  font-weight: 800 !important;
}

html[lang="th"] { font-family: 'Noto Sans Thai', var(--font-body); }
html[lang="th"] .display-h1,
html[lang="th"] .display-h2,
html[lang="th"] .display-h3 {
  font-family: 'Noto Sans Thai', sans-serif !important;
  text-transform: none !important;
  letter-spacing: normal !important;
  font-weight: 800 !important;
}

/* RTL Directional mirroring */
[dir="rtl"] .dir-mirror {
  transform: scaleX(-1);
}

/* Motion & Animation */
.reveal-item {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.3s cubic-bezier(0.16, 1, 0.3, 1), transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

@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;
  }
}