/* ==========================================================================
   HIROCAN.COM — Sleek Minimalist Hub Refresh
   Palette: Deep Navy (#010033) & Electric Cyan (#00ACFF)
   ========================================================================== */

:root {
  --bg-deep: #010022;
  --bg-navy: #010033;
  --bg-surface: rgba(8, 14, 58, 0.62);
  --bg-surface-hover: rgba(14, 25, 88, 0.78);
  --cyan-primary: #00acff;
  --cyan-bright: #38c4ff;
  --cyan-glow: rgba(0, 172, 255, 0.35);
  --cyan-subtle: rgba(0, 172, 255, 0.14);
  --border-default: rgba(0, 172, 255, 0.28);
  --border-hover: rgba(0, 172, 255, 0.85);
  --text-primary: #ffffff;
  --text-secondary: #9bb5d6;
  --text-muted: #5e789e;
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-display: 'Space Grotesk', var(--font-sans);
  --font-mono: 'JetBrains Mono', monospace;
  --radius-card: 22px;
  --transition-snappy: 220ms cubic-bezier(0.22, 1, 0.36, 1);
}

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

html,
body {
  min-height: 100%;
  background-color: var(--bg-navy);
  color: var(--text-primary);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

body {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  min-height: 100dvh;
  padding: 2.5rem 1.25rem;
  position: relative;
}

.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;
}

/* ==========================================================================
   Ambient Background & Subtle Ortholinear Key Matrix Grid
   ========================================================================== */

.bg-layer {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
  background: radial-gradient(circle at 50% 0%, #050a47 0%, var(--bg-navy) 55%, var(--bg-deep) 100%);
}

.bg-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(95px);
  opacity: 0.45;
  transition: transform 0.6s ease-out;
}

.bg-glow--primary {
  width: 480px;
  height: 480px;
  background: radial-gradient(circle, rgba(0, 172, 255, 0.42) 0%, rgba(0, 172, 255, 0) 70%);
  top: -120px;
  left: 50%;
  transform: translateX(-50%);
}

.bg-glow--secondary {
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(68, 56, 255, 0.28) 0%, rgba(1, 0, 51, 0) 70%);
  bottom: -140px;
  left: 50%;
  transform: translateX(-50%);
}

/* Subtle ortholinear switch-matrix inspired dot/grid pattern */
.bg-grid {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(to right, rgba(0, 172, 255, 0.045) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(0, 172, 255, 0.045) 1px, transparent 1px);
  background-size: 38px 38px;
  mask-image: radial-gradient(ellipse 75% 65% at 50% 42%, #000 25%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 75% 65% at 50% 42%, #000 25%, transparent 100%);
}

.bg-vignette {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 50%, transparent 55%, rgba(1, 0, 26, 0.65) 100%);
}

/* ==========================================================================
   Main Container
   ========================================================================== */

.hub-container {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 500px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2.25rem;
  animation: fadeUp 0.65s cubic-bezier(0.16, 1, 0.3, 1) both;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ==========================================================================
   Brand Identity Header (Sleek Keycap 'H' Monogram + Custom Wordmark)
   ========================================================================== */

.brand-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 1.35rem;
}

.brand-lockup {
  display: inline-flex;
  align-items: center;
  gap: 1.05rem;
  padding: 0.35rem 0.5rem;
  user-select: none;
}

.keycap-mark-wrap {
  position: relative;
  width: 68px;
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.keycap-mark-glow {
  position: absolute;
  inset: -6px;
  border-radius: 22px;
  background: radial-gradient(circle, rgba(0, 172, 255, 0.55) 0%, rgba(0, 172, 255, 0) 70%);
  opacity: 0.7;
  filter: blur(8px);
  transition: opacity var(--transition-snappy), transform var(--transition-snappy);
}

.keycap-mark-svg {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  display: block;
  filter: drop-shadow(0 6px 16px rgba(0, 172, 255, 0.32));
  transition: transform var(--transition-snappy), filter var(--transition-snappy);
}

.brand-lockup:hover .keycap-mark-svg {
  transform: translateY(-2px) scale(1.04);
  filter: drop-shadow(0 10px 24px rgba(0, 172, 255, 0.52));
}

.brand-lockup:hover .keycap-mark-glow {
  opacity: 1;
  transform: scale(1.1);
}

.brand-wordmark-svg {
  height: 56px;
  width: auto;
  display: block;
  overflow: visible;
  filter: drop-shadow(0 4px 14px rgba(0, 172, 255, 0.18));
  transition: transform var(--transition-snappy);
}

.brand-lockup:hover .brand-wordmark-svg {
  transform: translateY(-1px);
}

.brand-meta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.32rem 0.85rem;
  border-radius: 999px;
  background: rgba(0, 172, 255, 0.1);
  border: 1px solid rgba(0, 172, 255, 0.28);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.09em;
  color: var(--cyan-bright);
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--cyan-primary);
  box-shadow: 0 0 8px var(--cyan-primary);
  animation: pulseDot 2.5s infinite ease-in-out;
}

@keyframes pulseDot {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.45;
    transform: scale(0.85);
  }
}

.brand-tagline {
  font-size: 0.94rem;
  line-height: 1.55;
  color: var(--text-secondary);
  max-width: 38ch;
  font-weight: 400;
}

/* ==========================================================================
   Link Cards (Mechanical Keycap + Dark Glass Aesthetic)
   ========================================================================== */

.links-grid {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 0.95rem;
}

.link-card {
  position: relative;
  display: flex;
  align-items: center;
  gap: 1.05rem;
  width: 100%;
  padding: 1.1rem 1.25rem;
  border-radius: var(--radius-card);
  background: var(--bg-surface);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1.5px solid var(--border-default);
  /* Subtle physical keycap bottom lip + ambient shadow */
  box-shadow:
    0 4px 0 0 rgba(0, 110, 185, 0.28),
    0 12px 28px -10px rgba(0, 0, 0, 0.65),
    0 1px 0 0 rgba(255, 255, 255, 0.08) inset;
  text-decoration: none;
  color: var(--text-primary);
  overflow: hidden;
  transition:
    transform var(--transition-snappy),
    border-color var(--transition-snappy),
    background-color var(--transition-snappy),
    box-shadow var(--transition-snappy);
  will-change: transform;
}

/* Interactive cursor-tracking spotlight glow */
.card-glow {
  position: absolute;
  inset: 0;
  background: radial-gradient(
    320px circle at var(--mouse-x, 50%) var(--mouse-y, 50%),
    rgba(0, 172, 255, 0.17),
    transparent 65%
  );
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.link-card:hover,
.link-card:focus-visible {
  transform: translateY(-3px);
  background: var(--bg-surface-hover);
  border-color: var(--border-hover);
  box-shadow:
    0 6px 0 0 rgba(0, 172, 255, 0.42),
    0 18px 36px -8px rgba(0, 172, 255, 0.25),
    0 1px 0 0 rgba(255, 255, 255, 0.16) inset;
  outline: none;
}

.link-card:hover .card-glow,
.link-card:focus-visible .card-glow {
  opacity: 1;
}

/* Tactile key-press actuation state */
.link-card:active,
.link-card.is-pressed {
  transform: translateY(2px);
  box-shadow:
    0 1px 0 0 rgba(0, 172, 255, 0.5),
    0 6px 14px -4px rgba(0, 172, 255, 0.2),
    0 1px 0 0 rgba(255, 255, 255, 0.1) inset;
}

/* Left Icon Box */
.card-icon-wrap {
  position: relative;
  z-index: 1;
  width: 50px;
  height: 50px;
  flex-shrink: 0;
  border-radius: 14px;
  background: rgba(0, 172, 255, 0.11);
  border: 1px solid rgba(0, 172, 255, 0.26);
  display: flex;
  align-items: center;
  justify-content: center;
  transition:
    background-color var(--transition-snappy),
    border-color var(--transition-snappy),
    transform var(--transition-snappy),
    box-shadow var(--transition-snappy);
}

.link-card:hover .card-icon-wrap,
.link-card:focus-visible .card-icon-wrap {
  background: rgba(0, 172, 255, 0.2);
  border-color: var(--cyan-primary);
  transform: scale(1.05);
  box-shadow: 0 0 18px rgba(0, 172, 255, 0.32);
}

.card-icon {
  width: 24px;
  height: 24px;
  fill: var(--cyan-primary);
  color: var(--cyan-primary);
  transition: fill var(--transition-snappy), color var(--transition-snappy), transform var(--transition-snappy);
}

.card-icon--stroke {
  width: 25px;
  height: 25px;
  fill: none;
}

.card-icon--fk {
  width: 27px;
  height: 21px;
}

.link-card:hover .card-icon,
.link-card:focus-visible .card-icon {
  fill: #5cd0ff;
  color: #5cd0ff;
}

.link-card:hover .card-icon--stroke,
.link-card:focus-visible .card-icon--stroke {
  fill: none;
}

/* Card Text Content */
.card-body {
  position: relative;
  z-index: 1;
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 0.22rem;
}

.card-title-row {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  flex-wrap: wrap;
}

.card-title {
  font-family: var(--font-display);
  font-size: 1.12rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

.card-badge {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  padding: 0.14rem 0.45rem;
  border-radius: 6px;
  background: rgba(0, 172, 255, 0.13);
  color: var(--cyan-bright);
  border: 1px solid rgba(0, 172, 255, 0.22);
}

.card-desc {
  font-size: 0.83rem;
  color: var(--text-secondary);
  line-height: 1.38;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Right Action / Keycap Shortcut + Arrow */
.card-action {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 0.55rem;
  flex-shrink: 0;
}

.keycap-hint {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 6px;
  background: rgba(1, 0, 51, 0.75);
  border: 1px solid rgba(155, 181, 214, 0.24);
  box-shadow: 0 2px 0 rgba(0, 0, 0, 0.45);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-muted);
  transition: all var(--transition-snappy);
}

.link-card:hover .keycap-hint,
.link-card:focus-visible .keycap-hint {
  border-color: rgba(0, 172, 255, 0.55);
  color: var(--cyan-bright);
  background: rgba(0, 172, 255, 0.12);
}

.arrow-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition:
    color var(--transition-snappy),
    transform var(--transition-snappy),
    background-color var(--transition-snappy);
}

.arrow-icon svg {
  width: 18px;
  height: 18px;
}

.link-card:hover .arrow-icon,
.link-card:focus-visible .arrow-icon {
  color: var(--text-primary);
  background: rgba(0, 172, 255, 0.22);
  transform: translate(2px, -2px);
}

/* Expandable Support Card & Drawer */
.support-card-group {
  display: flex;
  flex-direction: column;
  width: 100%;
}

.link-card--expandable {
  font-family: inherit;
  text-align: left;
  cursor: pointer;
}

.link-card--expandable:hover .arrow-icon--chevron,
.link-card--expandable:focus-visible .arrow-icon--chevron {
  transform: translateY(2px);
}

.link-card--expandable[aria-expanded="true"] {
  background: rgba(14, 25, 88, 0.88);
  border-color: var(--cyan-primary);
  border-bottom-left-radius: 10px;
  border-bottom-right-radius: 10px;
  box-shadow:
    0 2px 0 0 rgba(0, 172, 255, 0.45),
    0 12px 28px -8px rgba(0, 172, 255, 0.22);
}

.link-card--expandable[aria-expanded="true"] .arrow-icon--chevron {
  transform: rotate(180deg);
  background: rgba(0, 172, 255, 0.28);
  color: var(--text-primary);
}

.support-drawer {
  margin-top: 0.35rem;
  border-radius: 12px 12px var(--radius-card) var(--radius-card);
  background: rgba(5, 9, 42, 0.86);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1.5px solid rgba(0, 172, 255, 0.36);
  box-shadow:
    0 18px 40px -12px rgba(0, 0, 0, 0.78),
    0 1px 0 0 rgba(255, 255, 255, 0.06) inset;
  overflow: hidden;
  animation: drawerSlideDown 240ms cubic-bezier(0.22, 1, 0.36, 1) both;
}

@keyframes drawerSlideDown {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.support-drawer-inner {
  padding: 1.15rem;
  display: flex;
  flex-direction: column;
  gap: 0.95rem;
}

/* Important TRRS First Safety Callout */
.safety-banner {
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
  padding: 0.75rem 0.9rem;
  border-radius: 12px;
  background: rgba(255, 170, 0, 0.09);
  border: 1px solid rgba(255, 180, 0, 0.35);
  color: #ffd88a;
  font-size: 0.78rem;
  line-height: 1.45;
}

.safety-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  color: #ffbe3d;
  margin-top: 1px;
}

.safety-text strong {
  color: #ffffff;
  font-weight: 600;
}

/* Step-by-Step Support Tiles */
.support-items {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.support-item {
  padding: 0.9rem 1rem;
  border-radius: 14px;
  background: rgba(11, 19, 72, 0.55);
  border: 1px solid rgba(0, 172, 255, 0.18);
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  transition: border-color var(--transition-snappy), background-color var(--transition-snappy);
}

.support-item:hover {
  border-color: rgba(0, 172, 255, 0.38);
  background: rgba(14, 24, 88, 0.68);
}

.support-item-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.step-pill {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  padding: 0.12rem 0.45rem;
  border-radius: 5px;
  background: rgba(0, 172, 255, 0.18);
  color: var(--cyan-bright);
  border: 1px solid rgba(0, 172, 255, 0.32);
}

.step-pill--muted {
  background: rgba(155, 181, 214, 0.12);
  color: var(--text-secondary);
  border-color: rgba(155, 181, 214, 0.25);
}

.support-item-title {
  font-family: var(--font-display);
  font-size: 0.96rem;
  font-weight: 700;
  color: var(--text-primary);
}

.support-item-desc {
  font-size: 0.79rem;
  line-height: 1.45;
  color: var(--text-secondary);
}

.support-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.25rem;
}

.btn-support {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.46rem 0.8rem;
  border-radius: 9px;
  font-size: 0.76rem;
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition-snappy);
}

.btn-support svg {
  width: 15px;
  height: 15px;
  flex-shrink: 0;
}

.btn-support--primary {
  background: var(--cyan-primary);
  color: #010028;
  box-shadow: 0 2px 10px rgba(0, 172, 255, 0.3);
}

.btn-support--primary:hover,
.btn-support--primary:focus-visible {
  background: #33bfff;
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(0, 172, 255, 0.45);
}

.btn-support--ghost {
  background: rgba(0, 172, 255, 0.1);
  color: var(--text-primary);
  border: 1px solid rgba(0, 172, 255, 0.32);
}

.btn-support--ghost:hover,
.btn-support--ghost:focus-visible {
  background: rgba(0, 172, 255, 0.2);
  border-color: var(--cyan-primary);
  transform: translateY(-1px);
}

.btn-support--link {
  padding: 0.4rem 0.5rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.btn-support--link:hover {
  color: var(--cyan-bright);
}

.support-drawer-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.35rem;
  border-top: 1px solid rgba(155, 181, 214, 0.12);
  font-size: 0.74rem;
  color: var(--text-muted);
}

.support-drawer-footer a {
  color: var(--text-secondary);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  transition: color var(--transition-snappy);
}

.support-drawer-footer a:hover {
  color: var(--cyan-bright);
}

/* ==========================================================================
   Footer & Shortcut Hint
   ========================================================================== */

.hub-footer {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  margin-top: 0.4rem;
  text-align: center;
}

.shortcut-bar {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.74rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.shortcut-bar kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 20px;
  height: 20px;
  padding: 0 5px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(155, 181, 214, 0.2);
  box-shadow: 0 1.5px 0 rgba(0, 0, 0, 0.5);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-secondary);
}

.copyright {
  font-size: 0.78rem;
  color: var(--text-muted);
  letter-spacing: 0.01em;
}

/* ==========================================================================
   Responsive Adjustments
   ========================================================================== */

@media (max-width: 520px) {
  body {
    padding: 2rem 1rem;
  }

  .keycap-mark-wrap {
    width: 56px;
    height: 56px;
  }

  .brand-wordmark-svg {
    height: 46px;
  }

  .link-card {
    padding: 1rem 1.05rem;
    gap: 0.85rem;
  }

  .card-desc {
    white-space: normal;
  }

  .keycap-hint,
  .shortcut-bar {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}