/* ===================================
   SUPERBRO.CC — Dark Robotics Theme
   =================================== */

/* --- Design Tokens --- */
:root {
  --bg-primary: #0a0a0a;
  --bg-secondary: #111111;
  --bg-tertiary: #1a1a1a;
  --bg-card: #161616;
  --bg-card-hover: #1e1e1e;

  --text-primary: #e8e8e8;
  --text-secondary: #999999;
  --text-muted: #666666;
  --text-faint: #444444;

  --accent: #00d4ff;
  --accent-dim: rgba(0, 212, 255, 0.15);
  --accent-glow: rgba(0, 212, 255, 0.08);

  --border: rgba(255, 255, 255, 0.08);
  --border-accent: rgba(0, 212, 255, 0.2);

  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;

  --text-xs: clamp(0.6875rem, 0.65rem + 0.1vw, 0.75rem);
  --text-sm: clamp(0.8125rem, 0.78rem + 0.15vw, 0.875rem);
  --text-base: clamp(0.9375rem, 0.9rem + 0.18vw, 1rem);
  --text-lg: clamp(1.0625rem, 1rem + 0.25vw, 1.125rem);
  --text-xl: clamp(1.25rem, 1.1rem + 0.5vw, 1.5rem);
  --text-2xl: clamp(1.75rem, 1.4rem + 1vw, 2.25rem);
  --text-3xl: clamp(2.25rem, 1.6rem + 2vw, 3.5rem);
  --text-4xl: clamp(3rem, 2rem + 3.5vw, 6rem);
  --text-hero: clamp(3.5rem, 2rem + 6vw, 10rem);

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;
  --space-24: 96px;
  --space-32: 128px;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;

  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-enter: 300ms cubic-bezier(0.16, 1, 0.3, 1);

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.4);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.5);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.6);

  --container-max: 1200px;
  --header-height: 64px;
}

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

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

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

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }

/* --- Skip Link --- */
.skip-link {
  position: absolute;
  left: -9999px;
  top: var(--space-2);
  background: var(--accent);
  color: var(--bg-primary);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  font-weight: 600;
  z-index: 1000;
}
.skip-link:focus { left: var(--space-4); }

/* --- Container --- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}
@media (min-width: 768px) {
  .container { padding: 0 var(--space-8); }
}

/* ===================================
   HEADER
   =================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-height);
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: transform var(--transition-enter), box-shadow var(--transition-enter);
}
.site-header--hidden { transform: translateY(-100%); }

.header-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}

.logo-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--text-primary);
  transition: color var(--transition-interactive);
  cursor: pointer;
}
.logo-link:hover { color: var(--accent); }

.logo-icon { color: var(--accent); flex-shrink: 0; }

.logo-text {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  letter-spacing: 0.15em;
}

/* Nav */
.main-nav {
  display: none;
  align-items: center;
  gap: var(--space-1);
}
@media (min-width: 900px) {
  .main-nav { display: flex; }
}

.nav-link {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  transition: color var(--transition-interactive), background var(--transition-interactive);
  letter-spacing: 0.02em;
  cursor: pointer;
}
.nav-link:hover { color: var(--text-primary); background: rgba(255,255,255,0.05); }

.nav-link--portal {
  color: var(--accent);
  border: 1px solid var(--border-accent);
  margin-left: var(--space-2);
}
.nav-link--portal:hover {
  background: var(--accent-dim);
  color: var(--accent);
}

/* Header actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.lang-toggle {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--text-secondary);
  padding: var(--space-1) var(--space-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: color var(--transition-interactive), border-color var(--transition-interactive);
  cursor: pointer;
  min-width: 42px;
  text-align: center;
}
.lang-toggle:hover { color: var(--text-primary); border-color: var(--text-muted); }

/* Mobile menu button */
.mobile-menu-btn {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
  cursor: pointer;
}
@media (min-width: 900px) {
  .mobile-menu-btn { display: none; }
}

.hamburger-line {
  display: block;
  width: 20px;
  height: 1.5px;
  background: var(--text-primary);
  transition: transform var(--transition-interactive), opacity var(--transition-interactive);
}
.mobile-menu-btn.active .hamburger-line:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}
.mobile-menu-btn.active .hamburger-line:nth-child(2) { opacity: 0; }
.mobile-menu-btn.active .hamburger-line:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* Mobile Nav Overlay */
.mobile-nav-overlay {
  position: fixed;
  inset: 0;
  top: var(--header-height);
  background: rgba(10, 10, 10, 0.97);
  backdrop-filter: blur(20px);
  z-index: 99;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: var(--space-16);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-enter);
}
.mobile-nav-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.mobile-nav {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
}
.mobile-nav-link {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 500;
  color: var(--text-secondary);
  padding: var(--space-3) var(--space-6);
  transition: color var(--transition-interactive);
  cursor: pointer;
}
.mobile-nav-link:hover { color: var(--text-primary); }

/* ===================================
   HERO
   =================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding-top: var(--header-height);
}

.hero-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

/* Dot grid background */
.grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 1px 1px, rgba(255,255,255,0.04) 1px, transparent 0);
  background-size: 40px 40px;
  animation: gridPulse 8s ease-in-out infinite;
}

@keyframes gridPulse {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; }
}

/* Subtle glow */
.hero-glow {
  position: absolute;
  top: 30%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: var(--space-8);
}

.hero-wordmark {
  font-family: var(--font-display);
  font-size: var(--text-hero);
  font-weight: 700;
  letter-spacing: 0.12em;
  line-height: 1;
  color: var(--text-primary);
  margin-bottom: var(--space-6);
  opacity: 0;
  animation: heroFadeIn 1s cubic-bezier(0.16, 1, 0.3, 1) 0.2s forwards;
  text-shadow: 0 0 80px rgba(0, 212, 255, 0.08);
}

.hero-tagline {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 400;
  color: var(--accent);
  margin-bottom: var(--space-4);
  letter-spacing: 0.02em;
  opacity: 0;
  animation: heroFadeIn 1s cubic-bezier(0.16, 1, 0.3, 1) 0.5s forwards;
}

.hero-sub {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  max-width: 500px;
  margin: 0 auto var(--space-10);
  opacity: 0;
  animation: heroFadeIn 1s cubic-bezier(0.16, 1, 0.3, 1) 0.7s forwards;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  padding: var(--space-3) var(--space-6);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-md);
  transition: background var(--transition-interactive), transform var(--transition-interactive), box-shadow var(--transition-interactive);
  cursor: pointer;
  opacity: 0;
  animation: heroFadeIn 1s cubic-bezier(0.16, 1, 0.3, 1) 0.9s forwards;
}
.hero-cta:hover {
  background: var(--accent-dim);
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(0, 212, 255, 0.15);
}
.hero-cta:active { transform: translateY(0); }
.hero-cta svg { animation: bounceDown 2s ease-in-out infinite; }

@keyframes bounceDown {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(4px); }
}

@keyframes heroFadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* Scroll indicator */
.hero-scroll-indicator {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
}
.scroll-line {
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}
@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; transform: scaleY(1); }
  50% { opacity: 1; transform: scaleY(0.6); }
}

/* Section divider */
.section--specs::before {
  content: '';
  display: block;
  width: 60px;
  height: 1px;
  background: var(--accent);
  margin: 0 auto var(--space-12);
  opacity: 0.4;
}

/* ===================================
   SECTIONS (shared)
   =================================== */
.section {
  padding: clamp(var(--space-16), 8vw, var(--space-32)) 0;
  position: relative;
}

.section--specs { background: var(--bg-primary); }
.section--tech { background: var(--bg-secondary); }
.section--software { background: var(--bg-primary); }
.section--usecases { background: var(--bg-secondary); }
.section--opensource { background: var(--bg-primary); }

.section-header {
  text-align: center;
  margin-bottom: clamp(var(--space-10), 5vw, var(--space-16));
}
.section-header--left { text-align: left; }

.section-label {
  display: inline-block;
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--accent);
  margin-bottom: var(--space-4);
}

.section-title {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin-bottom: var(--space-4);
}

.section-desc {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  max-width: 650px;
  margin: 0 auto;
  line-height: 1.7;
}
.section-header--left .section-desc { margin: 0; }

/* ===================================
   PRODUCT SPECS
   =================================== */
.robot-visual {
  max-width: 600px;
  margin: 0 auto var(--space-12);
  color: var(--text-primary);
}
.robot-svg {
  width: 100%;
  height: auto;
}

/* Arm animation */
.robot-arm--left {
  animation: armSwayLeft 6s ease-in-out infinite;
  transform-origin: 265px 140px;
}
.robot-arm--right {
  animation: armSwayRight 6s ease-in-out infinite;
  transform-origin: 335px 140px;
}
@keyframes armSwayLeft {
  0%, 100% { transform: rotate(0deg); }
  50% { transform: rotate(-2deg); }
}
@keyframes armSwayRight {
  0%, 100% { transform: rotate(0deg); }
  50% { transform: rotate(2deg); }
}

/* Stats Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
  margin-bottom: var(--space-12);
}
@media (min-width: 600px) {
  .stats-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (min-width: 900px) {
  .stats-grid { grid-template-columns: repeat(6, 1fr); }
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-6) var(--space-4);
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.stat-card--accent { border-color: var(--border-accent); }

.stat-prefix {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 600;
  color: var(--accent);
  display: inline;
  letter-spacing: -0.02em;
}

.stat-number {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 600;
  color: var(--text-primary);
  font-variant-numeric: tabular-nums lining-nums;
  display: inline;
}
.stat-card--accent .stat-number { color: var(--accent); }

.stat-unit {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 400;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.stat-label {
  font-size: var(--text-xs);
  color: var(--text-secondary);
  margin-top: var(--space-1);
}

/* Spec details */
.spec-details {
  max-width: 700px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}
@media (min-width: 600px) {
  .spec-details { grid-template-columns: 1fr 1fr; }
}

.spec-detail-item {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--border);
  gap: var(--space-4);
}
.spec-detail-item:last-child { border-bottom: none; }
@media (min-width: 600px) {
  .spec-detail-item { padding: var(--space-3) var(--space-4); }
}

.spec-detail-key {
  font-size: var(--text-sm);
  color: var(--text-secondary);
}
.spec-detail-val {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-primary);
  text-align: right;
}

/* ===================================
   TECHNOLOGY GRID
   =================================== */
.tech-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}
@media (min-width: 600px) {
  .tech-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 900px) {
  .tech-grid { grid-template-columns: repeat(4, 1fr); }
}

.tech-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  transition: border-color var(--transition-interactive), background var(--transition-interactive);
}
.tech-card:hover {
  border-color: var(--border-accent);
  background: var(--bg-card-hover);
}

.tech-card__icon {
  width: 40px;
  height: 40px;
  margin-bottom: var(--space-4);
  color: var(--text-secondary);
}
.tech-card__icon svg { width: 100%; height: 100%; }

.tech-card__title {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.tech-card__desc {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ===================================
   SOFTWARE STACK
   =================================== */
.software-stack {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  max-width: 800px;
  margin: 0 auto;
}

.sw-layer {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.sw-layer__header {
  padding: var(--space-3) var(--space-6);
  border-bottom: 1px solid var(--border);
}
.sw-layer--app .sw-layer__header { border-left: 3px solid var(--accent); }
.sw-layer--mid .sw-layer__header { border-left: 3px solid rgba(0, 212, 255, 0.5); }
.sw-layer--low .sw-layer__header { border-left: 3px solid rgba(0, 212, 255, 0.25); }

.sw-layer__level {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-muted);
}

.sw-layer__items {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}
@media (min-width: 600px) {
  .sw-layer__items { grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }
}

.sw-item {
  padding: var(--space-4) var(--space-6);
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.sw-item:last-child { border-bottom: none; }

.sw-item__name {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--accent);
  font-variant-ligatures: none;
}

.sw-item__desc {
  font-size: var(--text-xs);
  color: var(--text-secondary);
}

/* ===================================
   USE CASES
   =================================== */
.usecase-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}
@media (min-width: 600px) {
  .usecase-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 900px) {
  .usecase-grid { grid-template-columns: repeat(3, 1fr); }
}

.usecase-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  transition: border-color var(--transition-interactive), background var(--transition-interactive);
}
.usecase-card:hover {
  border-color: var(--border-accent);
  background: var(--bg-card-hover);
}

.usecase-card__num {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--text-faint);
  line-height: 1;
  margin-bottom: var(--space-4);
}

.usecase-card__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.usecase-card__desc {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ===================================
   OPEN SOURCE
   =================================== */
.opensource-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-10);
  align-items: start;
}
@media (min-width: 768px) {
  .opensource-content { grid-template-columns: 1fr 1fr; }
}

.opensource-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.os-link {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-6);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-interactive), background var(--transition-interactive), transform var(--transition-interactive);
  cursor: pointer;
}
.os-link:hover {
  border-color: var(--border-accent);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
}
.os-link:active { transform: translateY(0); }

.os-link--github { border-color: var(--border-accent); }

.os-link svg:first-child {
  flex-shrink: 0;
  color: var(--text-secondary);
}

.os-link__title {
  display: block;
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-primary);
}

.os-link__sub {
  display: block;
  font-size: var(--text-xs);
  color: var(--text-muted);
}

.os-link__arrow {
  margin-left: auto;
  flex-shrink: 0;
  color: var(--text-muted);
  transition: color var(--transition-interactive);
}
.os-link:hover .os-link__arrow { color: var(--accent); }

/* ===================================
   PORTAL
   =================================== */
.portal {
  min-height: 100vh;
  padding-top: var(--header-height);
  background: var(--bg-primary);
}

.portal-main {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--space-8) var(--space-6);
}

.portal-header-bar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--space-10);
  flex-wrap: wrap;
  gap: var(--space-4);
}

.portal-title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 600;
  color: var(--text-primary);
}

.portal-subtitle {
  font-size: var(--text-sm);
  color: var(--text-muted);
}

.portal-back {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  color: var(--accent);
  transition: color var(--transition-interactive);
  cursor: pointer;
  white-space: nowrap;
}
.portal-back:hover { color: var(--text-primary); }

.portal-section {
  margin-bottom: var(--space-10);
}

.portal-section-title {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-muted);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--border);
}

.portal-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}
@media (min-width: 500px) {
  .portal-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 900px) {
  .portal-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (min-width: 1100px) {
  .portal-grid { grid-template-columns: repeat(4, 1fr); }
}

.portal-card {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-interactive), background var(--transition-interactive), transform var(--transition-interactive);
  cursor: pointer;
}
.portal-card:hover {
  border-color: var(--border-accent);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
}
.portal-card:active { transform: translateY(0); }

.portal-card__icon {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  color: var(--accent);
  opacity: 0.7;
}
.portal-card__icon svg { width: 100%; height: 100%; }

.portal-card__info { flex: 1; min-width: 0; }

.portal-card__name {
  display: block;
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.portal-card__url {
  display: block;
  font-size: var(--text-xs);
  color: var(--text-muted);
  font-family: var(--font-display);
}

.portal-card__badge {
  font-size: 0.625rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  border: 1px solid var(--border-accent);
  padding: 2px 6px;
  border-radius: 4px;
  flex-shrink: 0;
}

.portal-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.portal-link {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  color: var(--text-secondary);
  padding: var(--space-2) var(--space-4);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: color var(--transition-interactive), border-color var(--transition-interactive);
  cursor: pointer;
}
.portal-link:hover {
  color: var(--accent);
  border-color: var(--border-accent);
}

/* ===================================
   FOOTER
   =================================== */
.site-footer {
  border-top: 1px solid var(--border);
  padding: var(--space-8) 0;
  background: var(--bg-primary);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.footer-logo-icon { color: var(--accent); }
.footer-brand-text {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--text-secondary);
}

.footer-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: var(--space-1);
}
@media (max-width: 600px) {
  .footer-meta { align-items: flex-start; }
}

.footer-copyright {
  font-size: var(--text-xs);
  color: var(--text-muted);
}

.footer-attribution {
  font-size: var(--text-xs);
  color: var(--text-muted);
  transition: color var(--transition-interactive);
  cursor: pointer;
}
.footer-attribution:hover { color: var(--text-secondary); }

/* ===================================
   FADE-IN ANIMATION (IntersectionObserver)
   =================================== */
.fade-in {
  opacity: 1;
}
.fade-in--hidden {
  opacity: 0;
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}
.fade-in--visible {
  opacity: 1;
}

/* ===================================
   REDUCED MOTION
   =================================== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .hero-wordmark, .hero-tagline, .hero-sub, .hero-cta { opacity: 1; }
  .fade-in--hidden { opacity: 1; }
}

/* ===================================
   SCROLLBAR
   =================================== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--text-faint); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ===================================
   PORTAL LOGIN GATE
   =================================== */
.portal-login {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.login-container {
  width: 100%;
  max-width: 420px;
  padding: var(--space-6);
}

.login-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: var(--space-10) var(--space-8);
  text-align: center;
}

.login-logo {
  color: var(--accent);
  margin-bottom: var(--space-6);
}

.login-title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: 0.02em;
  margin-bottom: var(--space-2);
}

.login-subtitle {
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin-bottom: var(--space-8);
}

.login-form {
  text-align: left;
}

.login-field {
  margin-bottom: var(--space-5);
}

.login-label {
  display: block;
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-2);
}

.login-input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: var(--text-base);
  font-family: var(--font-body);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  outline: none;
}

.login-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.15);
}

.login-error {
  background: rgba(255, 60, 60, 0.1);
  border: 1px solid rgba(255, 60, 60, 0.3);
  color: #ff6b6b;
  font-size: var(--text-sm);
  padding: var(--space-3) var(--space-4);
  border-radius: 8px;
  margin-bottom: var(--space-5);
  text-align: center;
}

.login-btn {
  width: 100%;
  padding: var(--space-3) var(--space-6);
  background: var(--accent);
  color: var(--bg-primary);
  border: none;
  border-radius: 8px;
  font-size: var(--text-base);
  font-weight: 600;
  font-family: var(--font-display);
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.1s ease;
  margin-top: var(--space-2);
}

.login-btn:hover {
  background: #00bde0;
}

.login-btn:active {
  transform: scale(0.98);
}

.login-back {
  display: inline-block;
  margin-top: var(--space-6);
  font-size: var(--text-sm);
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s ease;
}

.login-back:hover {
  color: var(--accent);
}

.login-shake {
  animation: shake 0.4s ease;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-8px); }
  40% { transform: translateX(8px); }
  60% { transform: translateX(-5px); }
  80% { transform: translateX(5px); }
}

/* ===================================
   FEEDBACK FORM (Main Site)
   =================================== */
.feedback-form {
  max-width: 680px;
  margin: 0 auto;
}

.feedback-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-5);
}

@media (max-width: 600px) {
  .feedback-row { grid-template-columns: 1fr; }
}

.feedback-field {
  margin-bottom: var(--space-5);
}

.feedback-label {
  display: block;
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-2);
}

.feedback-input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: var(--text-base);
  font-family: var(--font-body);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  outline: none;
}

.feedback-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.15);
}

.feedback-textarea {
  resize: vertical;
  min-height: 120px;
  line-height: 1.6;
}

.feedback-types {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.feedback-type-option {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--space-6);
  cursor: pointer;
  font-size: var(--text-sm);
  color: var(--text-muted);
  transition: all 0.2s ease;
}

.feedback-type-option:has(input:checked) {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(0, 212, 255, 0.08);
}

.feedback-type-option input {
  display: none;
}

.feedback-status {
  padding: var(--space-3) var(--space-4);
  border-radius: 8px;
  font-size: var(--text-sm);
  margin-bottom: var(--space-4);
  text-align: center;
}

.feedback-status--success {
  background: rgba(0, 212, 255, 0.1);
  border: 1px solid rgba(0, 212, 255, 0.3);
  color: var(--accent);
}

.feedback-status--error {
  background: rgba(255, 60, 60, 0.1);
  border: 1px solid rgba(255, 60, 60, 0.3);
  color: #ff6b6b;
}

.feedback-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-8);
  background: var(--accent);
  color: var(--bg-primary);
  border: none;
  border-radius: 8px;
  font-size: var(--text-base);
  font-weight: 600;
  font-family: var(--font-display);
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.1s ease;
}

.feedback-btn:hover { background: #00bde0; }
.feedback-btn:active { transform: scale(0.98); }
.feedback-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ===================================
   PORTAL FEEDBACK VIEWER
   =================================== */
.portal-section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-6);
}

.portal-section-header .portal-section-title {
  margin-bottom: 0;
}

.portal-refresh-btn {
  padding: var(--space-2) var(--space-4);
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-muted);
  font-size: var(--text-xs);
  font-family: var(--font-body);
  cursor: pointer;
  transition: all 0.2s ease;
}

.portal-refresh-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.feedback-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.feedback-loading {
  color: var(--text-faint);
  font-size: var(--text-sm);
  padding: var(--space-6);
  text-align: center;
}

.feedback-empty {
  color: var(--text-faint);
  font-size: var(--text-sm);
  padding: var(--space-8);
  text-align: center;
  border: 1px dashed var(--border);
  border-radius: 8px;
}

.feedback-item {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: var(--space-5);
}

.feedback-item__header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
  flex-wrap: wrap;
}

.feedback-item__name {
  font-weight: 600;
  color: var(--text-primary);
  font-size: var(--text-sm);
}

.feedback-item__badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.feedback-item__badge--suggestion {
  background: rgba(0, 212, 255, 0.12);
  color: var(--accent);
}
.feedback-item__badge--bug {
  background: rgba(255, 60, 60, 0.12);
  color: #ff6b6b;
}
.feedback-item__badge--question {
  background: rgba(255, 200, 0, 0.12);
  color: #ffc800;
}
.feedback-item__badge--other {
  background: rgba(160, 160, 160, 0.12);
  color: #a0a0a0;
}

.feedback-item__time {
  margin-left: auto;
  font-size: 11px;
  color: var(--text-faint);
}

.feedback-item__email {
  font-size: 12px;
  color: var(--text-faint);
  margin-bottom: var(--space-3);
}

.feedback-item__message {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-word;
}