@import "tailwindcss";

@theme inline {
  --color-background: var(--background);
  --color-foreground: var(--foreground);
  --font-sans: var(--font-geist-sans);
  --font-mono: var(--font-geist-mono);
}

:root {
  --font-geist-sans: Inter, Outfit, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-geist-mono: "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

/* ═══ DARK THEME ═══ */
:root, [data-theme="dark"] {
  --background: #06080d;
  --foreground: #c8d6e5;
  --accent: #00e5ff;
  --accent-dim: #0097a7;
  --accent-purple: #7c4dff;
  --accent-pink: #ff4081;
  --surface: rgba(12, 18, 30, 0.7);
  --surface-border: rgba(0, 229, 255, 0.08);
  --surface-hover: rgba(0, 229, 255, 0.04);
  --text-primary: #ffffff;
  --text-secondary: #c8d6e5;
  --text-muted: #6b7280;
  --text-accent: #00e5ff;
  --text-accent-hover: #67edff;
  --glow-cyan: 0 0 20px rgba(0, 229, 255, 0.15);
  --grid-color: rgba(0, 229, 255, 0.03);
  --row-hover: rgba(0, 229, 255, 0.04);
  --input-bg: rgba(12, 18, 30, 0.6);
  --input-border: rgba(0, 229, 255, 0.1);
  --input-focus: rgba(0, 229, 255, 0.4);
  --chart-grid: rgba(0, 229, 255, 0.06);
  --btn-active-bg: rgba(0, 229, 255, 0.2);
  --btn-active-border: rgba(0, 229, 255, 0.5);
  --progress-bg: rgba(0, 229, 255, 0.08);
  --spinner-track: rgba(0, 229, 255, 0.3);
  --spinner-head: #00e5ff;
  color-scheme: dark;
}

/* ═══ LIGHT THEME ═══ */
[data-theme="light"] {
  --background: #f7f8fc;
  --foreground: #1e293b;
  --accent: #0284c7;
  --accent-dim: #0369a1;
  --accent-purple: #7c3aed;
  --accent-pink: #db2777;
  --surface: rgba(255, 255, 255, 0.85);
  --surface-border: rgba(2, 132, 199, 0.12);
  --surface-hover: rgba(2, 132, 199, 0.04);
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --text-accent: #0284c7;
  --text-accent-hover: #0369a1;
  --glow-cyan: 0 4px 20px rgba(2, 132, 199, 0.08);
  --grid-color: rgba(2, 132, 199, 0.04);
  --row-hover: rgba(2, 132, 199, 0.05);
  --input-bg: rgba(255, 255, 255, 0.8);
  --input-border: rgba(2, 132, 199, 0.15);
  --input-focus: rgba(2, 132, 199, 0.4);
  --chart-grid: rgba(2, 132, 199, 0.08);
  --btn-active-bg: rgba(2, 132, 199, 0.12);
  --btn-active-border: rgba(2, 132, 199, 0.3);
  --progress-bg: rgba(2, 132, 199, 0.1);
  --spinner-track: rgba(2, 132, 199, 0.3);
  --spinner-head: #0284c7;
  color-scheme: light;
}

body {
  background: var(--background);
  color: var(--foreground);
  font-family: var(--font-sans), system-ui, sans-serif;
  transition: background 0.3s, color 0.3s;
}

/* Grid background — dark only */
[data-theme="dark"] body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(var(--grid-color) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 20%, transparent 100%);
}

/* Top ambient glow — dark only */
[data-theme="dark"] body::after {
  content: '';
  position: fixed;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(ellipse, rgba(0, 229, 255, 0.06) 0%, transparent 70%);
  z-index: -1;
  pointer-events: none;
}

/* Light theme subtle background */
[data-theme="light"] body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  background: radial-gradient(ellipse at 50% 0%, rgba(2, 132, 199, 0.03) 0%, transparent 60%);
}

/* Glass card */
.glass {
  background: var(--surface);
  backdrop-filter: blur(16px);
  border: 1px solid var(--surface-border);
  border-radius: 12px;
  transition: border-color 0.2s, background 0.3s;
}
.glass:hover {
  border-color: var(--input-border);
}

/* Gradient heading */
.gradient-text {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-purple) 50%, var(--accent-pink) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Table row glow on hover */
.row-glow:hover {
  background: var(--row-hover);
}

/* Accent button */
.btn-accent {
  background: var(--btn-active-bg);
  border: 1px solid var(--surface-border);
  color: var(--text-accent);
  transition: all 0.2s;
}
.btn-accent:hover {
  border-color: var(--btn-active-border);
  box-shadow: var(--glow-cyan);
}

/* Input style */
.input-glass {
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  color: var(--foreground);
  transition: border-color 0.2s;
}
.input-glass::placeholder {
  color: var(--text-muted);
}
.input-glass:focus {
  outline: none;
  border-color: var(--input-focus);
  box-shadow: 0 0 12px rgba(2, 132, 199, 0.1);
}

/* Spinner */
.spinner {
  border: 2px solid var(--spinner-track);
  border-top-color: var(--spinner-head);
}

/* Themed text utility classes */
.text-t-primary { color: var(--text-primary); }
.text-t-secondary { color: var(--text-secondary); }
.text-t-muted { color: var(--text-muted); }
.text-t-accent { color: var(--text-accent); }
.text-t-accent:hover { color: var(--text-accent-hover); }
.border-t { border-color: var(--surface-border); }

/* Scrollbar */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--surface-border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--input-border); }

/* ═══════════════════════════════════════════
   PORTAL PAGE
   ═══════════════════════════════════════════ */

/* Portal accent palette */
:root, [data-theme="dark"] {
  --portal-accent-green: #34d399;
  --portal-accent-violet: #8b5cf6;
  --portal-accent-cyan: #00e5ff;
}
[data-theme="light"] {
  --portal-accent-green: #059669;
  --portal-accent-violet: #7c3aed;
  --portal-accent-cyan: #0284c7;
}

/* Root container */
.portal-page {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  overflow-x: hidden;
}
.portal-main {
  position: relative;
  z-index: 10;
}
.portal-container {
  width: min(calc(100% - 3rem), 1440px);
  margin: 0 auto;
}

/* ── Background: animated grid ── */
.portal-grid {
  position: fixed;
  inset: 0;
  z-index: 0;
  background-image:
    linear-gradient(var(--grid-color) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, black 20%, transparent 85%);
  animation: portal-grid-drift 30s linear infinite;
}
@keyframes portal-grid-drift {
  from { background-position: 0 0; }
  to   { background-position: 48px 48px; }
}

/* ── Background: floating orbs ── */
.portal-orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(100px);
  pointer-events: none;
  z-index: 0;
  animation: portal-float 12s ease-in-out infinite;
}
.portal-orb--1 {
  width: 500px; height: 500px;
  top: -15%; left: 15%;
  background: radial-gradient(circle, rgba(0,229,255,0.12), transparent 70%);
  animation-duration: 14s;
}
.portal-orb--2 {
  width: 380px; height: 380px;
  bottom: -10%; right: 10%;
  background: radial-gradient(circle, rgba(139,92,246,0.1), transparent 70%);
  animation-duration: 18s;
  animation-delay: -6s;
}
.portal-orb--3 {
  width: 300px; height: 300px;
  top: 35%; left: 55%;
  background: radial-gradient(circle, rgba(52,211,153,0.06), transparent 70%);
  animation-duration: 22s;
  animation-delay: -10s;
}
[data-theme="light"] .portal-orb--1 {
  background: radial-gradient(circle, rgba(2,132,199,0.08), transparent 70%);
}
[data-theme="light"] .portal-orb--2 {
  background: radial-gradient(circle, rgba(124,58,237,0.06), transparent 70%);
}
[data-theme="light"] .portal-orb--3 {
  background: radial-gradient(circle, rgba(5,150,105,0.05), transparent 70%);
}

@keyframes portal-float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33%      { transform: translate(25px, -18px) scale(1.04); }
  66%      { transform: translate(-18px, 12px) scale(0.96); }
}

/* ── Floating particles ── */
.portal-particles { position: fixed; inset: 0; z-index: 0; pointer-events: none; }
.portal-particle {
  position: absolute;
  width: 3px; height: 3px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.25;
  animation: portal-particle-drift 10s ease-in-out infinite;
}
@keyframes portal-particle-drift {
  0%, 100% { transform: translate(0, 0); opacity: 0.15; }
  50%      { transform: translate(-15px, -30px); opacity: 0.4; }
}

/* ── Header / Branding ── */
.portal-header {
  position: relative;
  z-index: 10;
  text-align: center;
  margin-bottom: 3.5rem;
}

.portal-logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px; height: 52px;
  border-radius: 14px;
  margin-bottom: 1.25rem;
  background: var(--btn-active-bg);
  border: 1px solid var(--surface-border);
  color: var(--accent);
  box-shadow: 0 0 30px rgba(0,229,255,0.08);
}
[data-theme="light"] .portal-logo-mark {
  box-shadow: 0 4px 20px rgba(2,132,199,0.1);
}

.portal-title {
  font-size: 4rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1;
}
.portal-title-glow {
  color: var(--text-primary);
}
.portal-title-accent {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-purple) 60%, var(--accent-pink) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
[data-theme="dark"] .portal-title-glow {
  text-shadow: 0 0 40px rgba(0,229,255,0.15);
}

.portal-subtitle {
  margin-top: 0.75rem;
  font-size: 1.05rem;
  font-weight: 300;
  letter-spacing: 0.12em;
  color: var(--text-muted);
}

/* Animated divider with scan effect */
.portal-divider {
  position: relative;
  width: 240px;
  height: 1px;
  margin: 1.5rem auto 0;
  background: linear-gradient(90deg, transparent 0%, var(--surface-border) 20%, var(--accent) 50%, var(--surface-border) 80%, transparent 100%);
  transform-origin: center;
  overflow: hidden;
}
.portal-divider-scan {
  position: absolute;
  top: 0; left: -40%;
  width: 40%; height: 100%;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  animation: portal-scan 3.5s ease-in-out infinite;
  animation-delay: 1s;
}
@keyframes portal-scan {
  0%   { left: -40%; opacity: 0; }
  10%  { opacity: 1; }
  90%  { opacity: 1; }
  100% { left: 100%; opacity: 0; }
}

/* ── Service Cards Grid ── */
.portal-cards {
  position: relative;
  z-index: 10;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  width: 100%;
}

/* Individual card */
.portal-card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 2.5rem 2rem 2rem;
  border-radius: 16px;
  background: var(--surface);
  backdrop-filter: blur(24px);
  border: 1px solid var(--surface-border);
  text-decoration: none;
  color: var(--text-primary);
  cursor: pointer;
  overflow: hidden;
  transition: border-color 0.35s ease, box-shadow 0.35s ease;
  min-height: 100%;
}
.portal-card:hover {
  border-color: var(--card-accent);
  box-shadow:
    0 0 40px var(--card-glow),
    inset 0 0 40px rgba(0,0,0,0.02);
}
[data-theme="light"] .portal-card:hover {
  box-shadow:
    0 8px 40px var(--card-glow),
    0 2px 8px rgba(0,0,0,0.04);
}

/* Corner brackets */
.portal-corner {
  position: absolute;
  width: 14px; height: 14px;
  border-color: var(--card-accent);
  opacity: 0;
  transition: opacity 0.35s ease;
  pointer-events: none;
}
.portal-card:hover .portal-corner { opacity: 0.7; }
.portal-corner--tl { top: 6px; left: 6px; border-top: 2px solid; border-left: 2px solid; }
.portal-corner--tr { top: 6px; right: 6px; border-top: 2px solid; border-right: 2px solid; }
.portal-corner--bl { bottom: 6px; left: 6px; border-bottom: 2px solid; border-left: 2px solid; }
.portal-corner--br { bottom: 6px; right: 6px; border-bottom: 2px solid; border-right: 2px solid; }

/* Decorative bg icon (large, faded) */
.portal-card-decor {
  position: absolute;
  top: -12px; right: -12px;
  width: 80px; height: 80px;
  color: var(--card-accent);
  opacity: 0.04;
  transition: opacity 0.35s;
  pointer-events: none;
}
.portal-card:hover .portal-card-decor { opacity: 0.08; }

/* Icon container */
.portal-card-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 60px; height: 60px;
  border-radius: 14px;
  margin-bottom: 1.25rem;
  background: var(--btn-active-bg);
  border: 1px solid var(--surface-border);
  color: var(--card-accent);
  transition: border-color 0.3s, box-shadow 0.3s, color 0.3s;
}
.portal-card-icon svg {
  width: 28px; height: 28px;
}
.portal-card:hover .portal-card-icon {
  border-color: var(--card-accent);
  box-shadow: 0 0 24px var(--card-glow);
}

/* Text */
.portal-card-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  letter-spacing: -0.01em;
  transition: color 0.3s;
}
.portal-card:hover .portal-card-title {
  color: var(--card-accent);
}
.portal-card-desc {
  font-size: 0.82rem;
  line-height: 1.55;
  color: var(--text-muted);
  text-align: left;
  margin-bottom: 1.25rem;
}

/* Enter action */
.portal-card-action {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  opacity: 0.78;
  transform: none;
  transition: all 0.35s ease;
  margin-top: auto;
}
.portal-card:hover .portal-card-action {
  opacity: 1;
  color: var(--card-accent);
}
.portal-card-action-icon {
  width: 14px; height: 14px;
  transition: transform 0.25s;
}
.portal-card:hover .portal-card-action-icon {
  transform: translate(2px, -2px);
}

/* Bottom highlight bar */
.portal-card-bar {
  position: absolute;
  bottom: 0;
  left: 2rem;
  width: 64px;
  height: 2px;
  border-radius: 2px;
  background: var(--card-accent);
  opacity: 0.5;
  transition: width 0.4s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.3s ease;
}
.portal-card:hover .portal-card-bar {
  width: calc(100% - 4rem);
  opacity: 1;
}

/* ── Footer ── */
.portal-footer {
  position: relative;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 2.5rem 0 2rem;
}
.portal-status-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: #34d399;
  box-shadow: 0 0 8px rgba(52,211,153,0.5);
  animation: portal-pulse 2s ease-in-out infinite;
}
@keyframes portal-pulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.5; }
}
.portal-status-text {
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
}

/* ── Portal Landing: Nav ── */
.portal-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 0.85rem 0;
  background: color-mix(in srgb, var(--background) 78%, transparent);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--surface-border);
}
.portal-nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}
.portal-nav-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-decoration: none;
}
.portal-nav-menu,
.portal-nav-controls {
  display: flex;
  align-items: center;
  gap: 1rem;
}
.portal-nav-menu a {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s;
}
.portal-nav-menu a:hover { color: var(--text-accent); }

/* ── Portal Landing: Hero ── */
.portal-hero {
  position: relative;
  min-height: calc(100vh - 78px);
  padding: clamp(3.5rem, 7vw, 6rem) 0 5.5rem;
}
.portal-hero-scan {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  animation: portal-hero-scan-move 4s linear infinite;
  opacity: 0.4;
}
@keyframes portal-hero-scan-move {
  0% { transform: translateY(-100%); }
  100% { transform: translateY(80vh); }
}
.portal-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(340px, 0.92fr);
  gap: clamp(2rem, 4vw, 4rem);
  align-items: center;
}
.portal-hero-copy {
  max-width: 760px;
}
.portal-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-dim);
  border: 1px solid var(--surface-border);
  padding: 0.35rem 0.9rem;
  margin-bottom: 2rem;
  border-radius: 2px;
}
.portal-hero-badge::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  animation: portal-pulse 1.5s ease-in-out infinite;
}
.portal-hero h1 {
  font-weight: 800;
  font-size: clamp(3.25rem, 7vw, 6.25rem);
  line-height: 0.98;
  letter-spacing: -0.04em;
  margin-bottom: 1.5rem;
}
.portal-hero h1 .hero-sub {
  display: block;
  margin-top: 0.8rem;
  font-size: 0.28em;
  font-weight: 300;
  letter-spacing: 0.18em;
  color: var(--text-muted);
  -webkit-text-fill-color: var(--text-muted);
  background: none;
}
.portal-hero-desc {
  font-size: clamp(1rem, 1.25vw, 1.18rem);
  color: var(--text-secondary);
  max-width: 640px;
  margin-bottom: 2.5rem;
  line-height: 1.9;
}
.portal-hero-actions {
  display: flex;
  gap: 0.85rem;
  flex-wrap: wrap;
}
.portal-hero-panel {
  position: relative;
  overflow: hidden;
  padding: 1.5rem;
  border-radius: 24px;
  box-shadow: 0 16px 60px rgba(0, 0, 0, 0.16);
}
.portal-hero-panel::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.04), transparent 32%),
    radial-gradient(circle at top right, rgba(0, 229, 255, 0.12), transparent 45%);
  pointer-events: none;
}
.portal-panel-header,
.portal-panel-shortcuts {
  position: relative;
  z-index: 1;
}
.portal-panel-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}
.portal-panel-label {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent-dim);
  margin-bottom: 0.5rem;
}
.portal-panel-title {
  font-size: clamp(1.35rem, 2vw, 1.85rem);
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}
.portal-panel-shortcuts {
  display: grid;
  gap: 0.85rem;
}
.portal-shortcut {
  display: grid;
  grid-template-columns: 3rem minmax(0, 1fr) auto;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.05rem;
  border-radius: 18px;
  border: 1px solid var(--surface-border);
  background: color-mix(in srgb, var(--background) 36%, transparent);
  text-decoration: none;
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease, background 0.3s ease;
}
.portal-shortcut:hover {
  transform: translateY(-2px);
  border-color: var(--card-accent);
  box-shadow: 0 0 28px var(--card-glow);
  background: color-mix(in srgb, var(--background) 28%, transparent);
}
.portal-shortcut-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  border-radius: 14px;
  border: 1px solid color-mix(in srgb, var(--card-accent) 24%, var(--surface-border));
  color: var(--card-accent);
  background: color-mix(in srgb, var(--card-accent) 12%, transparent);
}
.portal-shortcut-copy {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}
.portal-shortcut-title {
  color: var(--text-primary);
  font-weight: 600;
  letter-spacing: -0.01em;
}
.portal-shortcut-desc {
  color: var(--text-muted);
  font-size: 0.8rem;
  line-height: 1.5;
}
.portal-shortcut-arrow {
  width: 1rem;
  height: 1rem;
  color: var(--card-accent);
  opacity: 0.8;
  transition: transform 0.25s ease, opacity 0.25s ease;
}
.portal-shortcut:hover .portal-shortcut-arrow {
  transform: translate(2px, -2px);
  opacity: 1;
}
.portal-hero-voltage {
  position: absolute;
  right: clamp(1rem, 3vw, 3rem);
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  opacity: 0.22;
  pointer-events: none;
}
.portal-voltage-bar {
  width: 4px;
  height: 40px;
  background: var(--surface-border);
  border-radius: 2px;
  overflow: hidden;
  position: relative;
}
.portal-voltage-bar::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--accent);
  border-radius: 2px;
  animation: portal-voltage 3s ease-in-out infinite;
}
@keyframes portal-voltage {
  0%, 100% { height: 60%; }
  25% { height: 85%; }
  50% { height: 72%; }
  75% { height: 95%; }
}
.portal-voltage-bar:nth-child(2)::after { animation-delay: 0.5s; }
.portal-voltage-bar:nth-child(3)::after { animation-delay: 1s; }
.portal-voltage-bar:nth-child(4)::after { animation-delay: 1.5s; }
.portal-voltage-bar:nth-child(5)::after { animation-delay: 0.3s; }

/* ── Portal Landing: Section common ── */
.portal-section {
  padding: 4.75rem 0;
}
.portal-section-tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent-dim);
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.portal-section-tag::before {
  content: '';
  width: 20px;
  height: 1px;
  background: var(--accent);
}
.portal-section-title {
  font-size: clamp(1.7rem, 3.5vw, 2.7rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 3rem;
  max-width: 760px;
}

/* ── Portal Landing: Feature cards ── */
.portal-features-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.4rem;
}
.portal-feature-card {
  position: relative;
  overflow: hidden;
  transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
}
.portal-feature-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}
.portal-feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--input-border);
  box-shadow: var(--glow-cyan);
}
.portal-feature-card:hover::after { opacity: 1; }

/* ── Portal Landing: Model/Tool cards ── */
.portal-model-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}
.portal-model-card {
  text-align: center;
  transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
}
.portal-model-card:hover {
  transform: translateY(-2px);
  border-color: var(--input-border);
  box-shadow: var(--glow-cyan);
}
.portal-tool-card {
  text-align: center;
  position: relative;
  overflow: hidden;
  transition: transform 0.3s, border-color 0.3s;
}
.portal-tool-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent-purple), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}
.portal-tool-card:hover {
  transform: translateY(-2px);
  border-color: rgba(124, 77, 255, 0.2);
}
.portal-tool-card:hover::after { opacity: 1; }

/* ── Portal Landing: Disclaimer ── */
.portal-disclaimer {
  border-top: 1px solid var(--surface-border);
  padding: 4.5rem 0 0;
}
.portal-disclaimer-panel {
  position: relative;
  overflow: hidden;
  padding: 2.2rem;
}
.portal-disclaimer-panel::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-dim), var(--accent), transparent);
  opacity: 0.7;
}

/* ── Portal Landing: Responsive ── */
@media (max-width: 1180px) {
  .portal-hero-grid {
    grid-template-columns: 1fr;
  }
  .portal-hero-voltage {
    display: none;
  }
  .portal-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (max-width: 1024px) {
  .portal-features-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (max-width: 768px) {
  .portal-container {
    width: min(calc(100% - 1.5rem), 1440px);
  }
  .portal-nav-inner {
    gap: 0.75rem;
  }
  .portal-nav-menu {
    display: none;
  }
  .portal-nav-controls {
    gap: 0.5rem;
  }
  .portal-hero {
    min-height: auto;
    padding: 2.75rem 0 4rem;
  }
  .portal-hero h1 {
    font-size: clamp(2.7rem, 12vw, 4rem);
  }
  .portal-features-grid,
  .portal-cards {
    grid-template-columns: 1fr;
  }
  .portal-disclaimer-panel {
    padding: 1.5rem;
  }
}

/* Recharts overrides */
.recharts-cartesian-grid-horizontal line,
.recharts-cartesian-grid-vertical line {
  stroke: var(--chart-grid) !important;
}
.recharts-text {
  fill: var(--text-muted) !important;
}