/* ═══════════════════════════════════════════════════════════
   ELEKTRO-DAN — Design System
   Tmavý průmyslový vzhled · elektrická amber/cyan paleta
   ═══════════════════════════════════════════════════════════ */

:root {
  --elec-bg:        #070b14;
  --elec-bg-2:      #0c1222;
  --elec-bg-3:      #111827;
  --elec-surface:   #151d2e;
  --elec-surface-2: #1a2438;
  --elec-border:    rgba(251, 191, 36, 0.18);
  --elec-border-2:  rgba(255, 255, 255, 0.08);

  --elec-amber:     #f59e0b;
  --elec-amber-lit: #fbbf24;
  --elec-amber-dim: #d97706;
  --elec-cyan:      #22d3ee;
  --elec-cyan-dim:  #0891b2;
  --elec-white:     #f8fafc;
  --elec-muted:     #94a3b8;
  --elec-text:      #cbd5e1;

  --elec-glow-amber: 0 0 30px rgba(245, 158, 11, 0.35);
  --elec-glow-cyan:  0 0 30px rgba(34, 211, 238, 0.25);
  --elec-shadow:     0 8px 32px rgba(0, 0, 0, 0.45);
  --elec-shadow-sm:  0 4px 16px rgba(0, 0, 0, 0.3);

  --radius:    12px;
  --radius-lg: 16px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --header-height: 96px;
  --nav-scroll-gap: 4px;
  --elec-header-bg: rgba(7, 11, 20, 0.92);
  --elec-overlay:   rgba(7, 11, 20, 0.75);
}

[data-theme="light"] {
  --elec-bg:        #eef2f7;
  --elec-bg-2:      #e2e8f0;
  --elec-bg-3:      #1e293b;
  --elec-surface:   #ffffff;
  --elec-surface-2: #f8fafc;
  --elec-border:    rgba(217, 119, 6, 0.28);
  --elec-border-2:  rgba(15, 23, 42, 0.1);
  --elec-white:     #0f172a;
  --elec-muted:     #64748b;
  --elec-text:      #334155;
  --elec-glow-amber: 0 0 20px rgba(245, 158, 11, 0.2);
  --elec-glow-cyan:  0 0 20px rgba(34, 211, 238, 0.15);
  --elec-shadow:     0 8px 32px rgba(15, 23, 42, 0.1);
  --elec-shadow-sm:  0 4px 16px rgba(15, 23, 42, 0.08);
  --elec-header-bg:  rgba(255, 255, 255, 0.92);
  --elec-overlay:    rgba(15, 23, 42, 0.55);
}

[data-theme="light"] .circuit-bg::before {
  background-image:
    linear-gradient(rgba(217, 119, 6, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(217, 119, 6, 0.07) 1px, transparent 1px);
}

[data-theme="light"] .circuit-bg::after {
  background: radial-gradient(ellipse, rgba(245, 158, 11, 0.1) 0%, transparent 70%);
}

[data-theme="light"] .hero-title {
  filter: drop-shadow(0 0 20px rgba(245, 158, 11, 0.15));
}

[data-theme="light"] .elec-header {
  box-shadow: 0 4px 24px rgba(15, 23, 42, 0.08);
}

/* ── Base ── */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', system-ui, sans-serif;
  line-height: 1.65;
  color: var(--elec-text);
  background: var(--elec-bg);
  margin: 0;
  padding: 0;
  scroll-padding-top: calc(var(--header-height) + var(--nav-scroll-gap));
}

body.elec-modal-open {
  overflow: hidden;
}

h1, h2, h3, h4 {
  font-family: 'Rajdhani', 'Inter', sans-serif;
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.15;
}

a {
  color: var(--elec-amber-lit);
  text-decoration: none;
  transition: var(--transition);
}

/* ── Circuit pattern utility ── */
.circuit-bg {
  position: relative;
  overflow: hidden;
}
.circuit-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(251, 191, 36, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(251, 191, 36, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
  z-index: 0;
}
.circuit-bg::after {
  content: '';
  position: absolute;
  top: -30%;
  right: -10%;
  width: 60%;
  height: 80%;
  background: radial-gradient(ellipse, rgba(245, 158, 11, 0.07) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}
.circuit-bg > * { position: relative; z-index: 1; }

/* ── Header ── */
.elec-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--elec-header-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--elec-border);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
}

.elec-topbar {
  background: var(--elec-bg-2);
  border-bottom: 1px solid var(--elec-border-2);
  padding: 0.45rem 0;
  font-size: 0.85rem;
}
.elec-topbar a { color: var(--elec-muted) !important; }
.elec-topbar a:hover { color: var(--elec-amber-lit) !important; }
.elec-topbar .divider { color: rgba(251, 191, 36, 0.3); }

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  border: 1px solid var(--elec-border-2);
  background: transparent;
  color: var(--elec-amber-lit);
  cursor: pointer;
  transition: var(--transition);
  font-size: 0.95rem;
  padding: 0;
  flex-shrink: 0;
}
.theme-toggle:hover {
  background: rgba(251, 191, 36, 0.12);
  border-color: var(--elec-border);
  transform: scale(1.05);
}
.theme-toggle .hidden { display: none; }

/* Honeypot – neviditelné pro uživatele */
.hp-trap {
  position: absolute;
  left: 0;
  top: 0;
  width: 0;
  height: 0;
  opacity: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: -1;
}

.hp-trap input {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  border: 0;
  padding: 0;
  margin: 0;
}

.elec-nav { padding: 0.75rem 0; }

.elec-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--elec-white) !important;
  text-decoration: none;
}
.elec-brand:hover { color: var(--elec-amber-lit) !important; }

.elec-brand-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--elec-amber-dim), var(--elec-amber-lit));
  border-radius: 10px;
  box-shadow: var(--elec-glow-amber);
  font-size: 1.25rem;
  color: var(--elec-bg);
}

.elec-brand-name {
  font-family: 'Rajdhani', sans-serif;
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  line-height: 1;
}
.elec-brand-sub {
  font-size: 0.75rem;
  color: var(--elec-muted);
  font-weight: 400;
  letter-spacing: 0.04em;
}

.elec-nav-link {
  color: var(--elec-muted) !important;
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.4rem 0;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: var(--transition);
}
.elec-nav-link:hover { color: var(--elec-amber-lit) !important; }
.elec-nav-link i { transition: transform 0.3s cubic-bezier(.68,-0.55,.27,1.55), color 0.3s; }
.elec-nav-link:hover i {
  transform: scale(1.2) rotate(-8deg);
  color: var(--elec-amber-lit);
}

.elec-nav-cta {
  background: linear-gradient(135deg, var(--elec-amber-dim), var(--elec-amber-lit)) !important;
  color: var(--elec-bg) !important;
  padding: 0.55rem 1.1rem !important;
  border-radius: 8px;
  font-weight: 700 !important;
  font-size: 0.85rem !important;
  letter-spacing: 0.03em;
  box-shadow: var(--elec-glow-amber);
  transition: var(--transition);
}
.elec-nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 40px rgba(245, 158, 11, 0.5);
  color: var(--elec-bg) !important;
}

#mobile-menu {
  background: var(--elec-surface) !important;
  border-top: 1px solid var(--elec-border);
  z-index: 1001;
}
#mobile-menu .elec-nav-link { display: block; padding: 0.6rem 0; }

.elec-menu-btn {
  color: var(--elec-amber-lit);
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.4rem;
  padding: 0.25rem;
}

/* ── Sections ── */
section {
  padding-top: 1.5rem;
  padding-bottom: 2.5rem;
  min-height: auto;
}

section[id] {
  scroll-margin-top: calc(var(--header-height) + var(--nav-scroll-gap));
}

.section-heading,
[id$="-heading"] {
  scroll-margin-top: calc(var(--header-height) + var(--nav-scroll-gap));
}

section.hero-section {
  padding-top: 0.75rem;
  padding-bottom: 2rem;
}

.section-dark {
  background: var(--elec-bg);
  color: var(--elec-text);
}
.section-dark-alt {
  background: var(--elec-bg-2);
  color: var(--elec-text);
}
.section-light {
  background: linear-gradient(180deg, #f1f5f9 0%, #e2e8f0 100%);
  color: #1e293b;
}

.section-heading {
  font-size: clamp(2rem, 5vw, 2.75rem);
  text-align: center;
  margin: 0 0 0.75rem;
  color: var(--elec-white);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.section-light .section-heading { color: var(--elec-bg-3); }

.section-heading::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--elec-amber), var(--elec-cyan));
  margin: 0.75rem auto 0;
  border-radius: 2px;
  box-shadow: var(--elec-glow-amber);
}

.section-subheading {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 3rem;
  color: var(--elec-muted);
  font-size: 1.05rem;
}
.section-light .section-subheading { color: #475569; }

.section-label {
  display: block;
  width: 100%;
  font-family: 'Rajdhani', sans-serif;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--elec-amber);
  margin: 0 0 0.35rem;
}

/* ── Hero ── */
.hero-section {
  background: var(--elec-bg);
  position: relative;
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.15;
  pointer-events: none;
}
.hero-glow-amber { background: var(--elec-amber); top: -10%; left: -5%; }
.hero-glow-cyan  { background: var(--elec-cyan); bottom: -20%; right: -5%; opacity: 0.1; }

.hero-title {
  font-size: clamp(2.5rem, 7vw, 4.5rem);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: linear-gradient(135deg, var(--elec-white) 0%, var(--elec-amber-lit) 50%, var(--elec-cyan) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 0.25rem;
  filter: drop-shadow(0 0 30px rgba(245, 158, 11, 0.3));
}

.hero-subtitle {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  color: var(--elec-amber-lit);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
}

.hero-tagline {
  font-size: clamp(1.1rem, 2.5vw, 1.4rem);
  color: var(--elec-white);
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.hero-desc {
  color: var(--elec-muted);
  font-size: 1.05rem;
  max-width: 540px;
  margin-bottom: 2rem;
}

.hero-image-wrap {
  position: relative;
}
.hero-image-wrap::before {
  content: '';
  position: absolute;
  inset: -3px;
  background: linear-gradient(135deg, var(--elec-amber), var(--elec-cyan));
  border-radius: var(--radius-lg);
  opacity: 0.5;
  z-index: 0;
}
.hero-image-wrap img {
  position: relative;
  z-index: 1;
  border-radius: var(--radius-lg);
  box-shadow: var(--elec-shadow);
  border: 2px solid rgba(251, 191, 36, 0.2);
}

.hero-stat {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(251, 191, 36, 0.08);
  border: 1px solid var(--elec-border);
  border-radius: 999px;
  padding: 0.35rem 1rem;
  font-size: 0.85rem;
  color: var(--elec-muted);
  margin-bottom: 1.5rem;
}
.hero-stat strong { color: var(--elec-amber-lit); }

/* ── Buttons ── */
.btn-electro {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.85rem 1.75rem;
  border-radius: 10px;
  font-family: 'Rajdhani', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: var(--transition);
  cursor: pointer;
  border: none;
  text-decoration: none;
}

.btn-electro-primary {
  background: linear-gradient(135deg, var(--elec-amber-dim), var(--elec-amber-lit));
  color: var(--elec-bg);
  box-shadow: var(--elec-glow-amber);
}
.btn-electro-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 0 50px rgba(245, 158, 11, 0.55);
  color: var(--elec-bg);
}

.btn-electro-secondary {
  background: transparent;
  color: var(--elec-cyan);
  border: 2px solid rgba(34, 211, 238, 0.4);
}
.btn-electro-secondary:hover {
  background: rgba(34, 211, 238, 0.1);
  border-color: var(--elec-cyan);
  color: var(--elec-cyan);
  transform: translateY(-3px);
  box-shadow: var(--elec-glow-cyan);
}

.btn-electro-danger {
  background: linear-gradient(135deg, #dc2626, #ef4444);
  color: white;
  box-shadow: 0 0 20px rgba(239, 68, 68, 0.3);
}
.btn-electro-danger:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(239, 68, 68, 0.5);
  color: white;
}

/* ── Cards ── */
.electro-card {
  background: var(--elec-surface);
  border: 1px solid var(--elec-border-2);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  height: 100%;
  display: flex;
  flex-direction: column;
}
.electro-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--elec-amber), var(--elec-cyan));
  opacity: 0;
  transition: opacity 0.3s;
}
.electro-card:hover {
  transform: translateY(-6px);
  border-color: var(--elec-border);
  box-shadow: var(--elec-shadow);
}
.electro-card:hover::before { opacity: 1; }

.section-light .electro-card {
  background: white;
  border-color: #e2e8f0;
  box-shadow: var(--elec-shadow-sm);
}
.section-light .electro-card:hover {
  border-color: rgba(245, 158, 11, 0.3);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.12);
}

.electro-card-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  font-size: 1.5rem;
  margin: 0 auto 1.25rem;
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.15), rgba(34, 211, 238, 0.1));
  border: 1px solid var(--elec-border);
  color: var(--elec-amber-lit);
}
.electro-card-icon.cyan { color: var(--elec-cyan); border-color: rgba(34, 211, 238, 0.25); }
.electro-card-icon.red  { color: #f87171; border-color: rgba(248, 113, 113, 0.25); }

.electro-card h3 {
  font-size: 1.25rem;
  color: var(--elec-white);
  text-align: center;
  margin-bottom: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.section-light .electro-card h3 { color: var(--elec-bg-3); }

.electro-card p { color: var(--elec-muted); text-align: center; font-size: 0.95rem; }
.section-light .electro-card p { color: #64748b; }

.electro-list {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0;
  text-align: left;
}
.electro-list li {
  padding: 0.45rem 0;
  border-bottom: 1px solid var(--elec-border-2);
  color: var(--elec-text);
  font-size: 0.92rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.section-light .electro-list li { color: #334155; border-color: #e2e8f0; }
.electro-list li:last-child { border-bottom: none; }
.electro-list li i { color: var(--elec-amber); width: 1.25rem; text-align: center; flex-shrink: 0; }

/* ── Stats / counters ── */
.stat-number {
  font-family: 'Rajdhani', sans-serif;
  font-size: 3rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--elec-amber-lit), var(--elec-cyan));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1;
}
.stat-number-sm { font-size: 2rem; }

/* ── Form ── */
.electro-form {
  background: var(--elec-surface);
  border: 1px solid var(--elec-border-2);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--elec-shadow);
  position: relative;
}
.section-light .electro-form {
  background: white;
  border-color: #e2e8f0;
}

.electro-input {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--elec-bg-2);
  border: 1px solid var(--elec-border-2);
  border-radius: 8px;
  color: var(--elec-white);
  font-family: inherit;
  font-size: 0.95rem;
  transition: var(--transition);
}
.section-light .electro-input {
  background: #f8fafc;
  border-color: #cbd5e1;
  color: #1e293b;
}
.electro-input:focus {
  outline: none;
  border-color: var(--elec-amber);
  box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.15);
}
.electro-input::placeholder { color: var(--elec-muted); }

/* Number input — vlastní stepper místo nativních šipek */
.electro-number {
  position: relative;
  display: block;
}

.electro-number .electro-input {
  padding-right: 2.75rem;
  -moz-appearance: textfield;
}

.electro-number .electro-input::-webkit-outer-spin-button,
.electro-number .electro-input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.electro-number-controls {
  position: absolute;
  top: 1px;
  right: 1px;
  bottom: 1px;
  width: 2.25rem;
  display: flex;
  flex-direction: column;
  border-left: 1px solid var(--elec-border-2);
  border-radius: 0 7px 7px 0;
  overflow: hidden;
  background: var(--elec-surface);
}

.section-light .electro-number-controls {
  background: #f1f5f9;
  border-left-color: #cbd5e1;
}

.electro-number-step {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  border: none;
  background: transparent;
  color: var(--elec-muted);
  font-size: 0.55rem;
  line-height: 1;
  cursor: pointer;
  transition: color 0.2s ease, background 0.2s ease;
}

.electro-number-step + .electro-number-step {
  border-top: 1px solid var(--elec-border-2);
}

.section-light .electro-number-step + .electro-number-step {
  border-top-color: #cbd5e1;
}

.electro-number-step:hover {
  color: var(--elec-amber-lit);
  background: rgba(245, 158, 11, 0.12);
}

.electro-number-step:active {
  color: var(--elec-amber);
  background: rgba(245, 158, 11, 0.22);
}

.electro-number-step:focus-visible {
  outline: none;
  box-shadow: inset 0 0 0 2px rgba(245, 158, 11, 0.45);
  z-index: 1;
}

.electro-number:focus-within .electro-number-controls {
  border-left-color: rgba(245, 158, 11, 0.35);
}

.electro-number .electro-input:focus {
  border-color: var(--elec-amber);
}

[data-theme="light"] .electro-number-controls {
  background: #f1f5f9;
  border-left-color: #cbd5e1;
}

[data-theme="light"] .electro-number-step + .electro-number-step {
  border-top-color: #cbd5e1;
}

[data-theme="light"] .electro-number-step:hover {
  background: rgba(245, 158, 11, 0.15);
}

/* Modální okna */
.elec-modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 9999;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  background: rgba(0, 0, 0, 0.6);
}

.elec-modal-overlay.is-open {
  display: flex;
}

.elec-modal-overlay.is-open .calc-modal-panel {
  animation: calcModalIn 0.22s ease-out;
}

@keyframes calcModalIn {
  from {
    opacity: 0;
    transform: translateY(12px) scale(0.97);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.elec-modal-panel {
  border-radius: 12px;
  box-shadow: var(--elec-shadow);
  background: var(--elec-surface);
  border: 1px solid var(--elec-border);
  max-height: min(90vh, 650px);
  overflow-y: auto;
}

.calc-modal-panel {
  position: relative;
  width: min(100%, 22rem);
  overflow: hidden;
}

.calc-modal-accent {
  height: 3px;
  background: linear-gradient(90deg, var(--elec-amber), var(--elec-cyan));
}

.calc-modal-panel.is-error .calc-modal-accent {
  background: linear-gradient(90deg, #f87171, #fb923c);
}

.calc-modal-close {
  position: absolute;
  top: 0.65rem;
  right: 0.65rem;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 1.75rem;
  height: 1.75rem;
  padding: 0;
  border: none;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--elec-muted);
  cursor: pointer;
  transition: color 0.2s ease, background 0.2s ease;
}

.calc-modal-close:hover {
  color: var(--elec-amber-lit);
  background: rgba(245, 158, 11, 0.12);
}

.calc-modal-inner {
  padding: 1.25rem 1.25rem 1.125rem;
  text-align: center;
}

.calc-modal-icon {
  width: 2.75rem;
  height: 2.75rem;
  margin: 0 auto 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  font-size: 1.15rem;
  color: var(--elec-bg);
  background: linear-gradient(135deg, var(--elec-amber-dim), var(--elec-amber-lit));
  box-shadow: var(--elec-glow-amber);
}

.calc-modal-panel.is-error .calc-modal-icon {
  background: linear-gradient(135deg, #dc2626, #f87171);
  box-shadow: 0 0 20px rgba(248, 113, 113, 0.35);
}

.calc-modal-inner h3 {
  margin: 0 0 0.875rem;
  font-family: Rajdhani, sans-serif;
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--elec-white);
}

.calc-modal-body {
  font-size: 0.875rem;
  line-height: 1.55;
  color: var(--elec-text);
  margin-bottom: 1rem;
}

.calc-modal-message {
  margin: 0;
  padding: 0.75rem 0.875rem;
  border-radius: 8px;
  background: rgba(248, 113, 113, 0.08);
  border: 1px solid rgba(248, 113, 113, 0.22);
  color: #fca5a5;
}

[data-theme="light"] .calc-modal-message {
  color: #b91c1c;
  background: rgba(248, 113, 113, 0.1);
}

.calc-modal-btn {
  width: 100%;
  padding: 0.55rem 1rem !important;
  font-size: 0.82rem !important;
  justify-content: center;
}

.calc-result-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
}

.calc-result-item {
  padding: 0.75rem 0.5rem;
  border-radius: 8px;
  background: var(--elec-bg-2);
  border: 1px solid var(--elec-border-2);
  text-align: center;
}

.calc-result-label {
  font-size: 0.62rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--elec-muted);
  margin-bottom: 0.25rem;
}

.calc-result-value {
  font-family: Rajdhani, sans-serif;
  font-weight: 700;
  line-height: 1.1;
}

.calc-result-value--energy {
  font-size: 1.2rem;
  color: var(--elec-amber-lit);
}

.calc-result-value--cost {
  font-size: 1.05rem;
  color: var(--elec-cyan);
}

.calc-result-formula {
  grid-column: 1 / -1;
  margin: 0.15rem 0 0;
  padding-top: 0.5rem;
  font-size: 0.68rem;
  line-height: 1.4;
  color: var(--elec-muted);
  border-top: 1px solid var(--elec-border-2);
}

.electro-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--elec-muted);
  margin-bottom: 0.4rem;
}

.electro-field-hint {
  margin: 0.35rem 0 0;
  font-size: 0.72rem;
  line-height: 1.4;
  color: var(--elec-muted);
}

.electro-field-hint.is-live {
  color: var(--elec-cyan);
}

.electro-field-hint-full {
  display: block;
  width: 100%;
  margin: 0 0 1rem;
}

.section-light .electro-label { color: #475569; }

/* ── Contact info box ── */
.contact-box {
  background: var(--elec-surface);
  border: 1px solid var(--elec-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--elec-shadow-sm);
}
.section-light .contact-box {
  background: linear-gradient(135deg, #0f172a, #1e293b);
  color: var(--elec-text);
}
.contact-box h3 {
  color: var(--elec-amber-lit);
  font-size: 1.35rem;
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.contact-box a { color: var(--elec-cyan); }
.contact-box a:hover { color: var(--elec-amber-lit); }
.contact-box p {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.6rem;
  font-size: 0.95rem;
}
.contact-box i { color: var(--elec-amber); width: 1.25rem; }

/* ── Share card ── */
.share-card {
  background: var(--elec-surface-2);
  border: 1px solid var(--elec-border-2);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  text-align: center;
}
.share-card h4 {
  color: var(--elec-white);
  font-size: 1.1rem;
  margin-bottom: 0.25rem;
}
.share-btn {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  border: none;
  color: white;
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.share-btn:hover { transform: scale(1.1); }

/* ── FAQ ── */
.faq-accordion {
  background: var(--elec-surface);
  border: 1px solid var(--elec-border-2);
  border-radius: var(--radius);
  margin-bottom: 0.75rem;
  overflow: hidden;
  transition: var(--transition);
}
.section-light .faq-accordion {
  background: white;
  border-color: #e2e8f0;
}
.faq-accordion.open {
  border-color: var(--elec-border);
  box-shadow: var(--elec-glow-amber);
}
.faq-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.25rem 1.5rem;
  background: transparent;
  border: none;
  cursor: pointer;
  text-align: left;
  transition: var(--transition);
}
.faq-toggle h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--elec-white);
  margin: 0;
  font-family: 'Inter', sans-serif;
  letter-spacing: 0;
  text-transform: none;
}
.section-light .faq-toggle h3 { color: #1e293b; }
.faq-toggle:hover { background: rgba(251, 191, 36, 0.05); }
.faq-arrow {
  color: var(--elec-amber);
  transition: transform 0.3s;
  flex-shrink: 0;
}
.faq-accordion.open .faq-arrow { transform: rotate(180deg); }
.faq-content {
  padding: 0 1.5rem 1.25rem;
  color: var(--elec-muted);
  font-size: 0.95rem;
  border-top: 1px solid var(--elec-border-2);
}
.section-light .faq-content { color: #64748b; border-color: #e2e8f0; }

/* ── Gallery ── */
#reference {
  display: block !important;
  align-items: flex-start !important;
}

.filter-btn {
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(8px);
  border: 1px solid var(--elec-border-2);
  background: var(--elec-surface);
  color: var(--elec-muted);
  transition: var(--transition);
  font-family: 'Rajdhani', sans-serif;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-size: 0.8rem;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.6rem 1.1rem;
  border-radius: 8px;
  cursor: pointer;
}
.filter-btn:hover {
  border-color: var(--elec-border);
  color: var(--elec-amber-lit);
  transform: translateY(-2px);
}
.filter-btn.active {
  background: linear-gradient(135deg, var(--elec-amber-dim), var(--elec-amber-lit));
  color: var(--elec-bg);
  border-color: transparent;
  box-shadow: var(--elec-glow-amber);
}
.filter-btn i { transition: transform 0.3s; }
.filter-btn:hover i { transform: scale(1.15); }

.gallery-item {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--elec-border-2);
  transition: var(--transition);
}
.gallery-item:hover {
  border-color: var(--elec-border);
  box-shadow: var(--elec-glow-amber);
  transform: translateY(-4px);
}
.gallery-item img {
  border: none !important;
  border-radius: 0 !important;
  box-shadow: none !important;
}
.gallery-item .absolute {
  background: var(--elec-overlay) !important;
}

/* ── Footer ── */
.elec-footer {
  background: var(--elec-bg);
  border-top: 1px solid var(--elec-border);
  padding: 2.5rem 0;
  color: var(--elec-muted);
}
.elec-footer a {
  color: var(--elec-muted);
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}
.elec-footer a:hover { color: var(--elec-amber-lit); }
.elec-footer-brand {
  font-family: 'Rajdhani', sans-serif;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--elec-white);
  letter-spacing: 0.06em;
}

/* ── Cookie banner ── */
#cookie-banner {
  background: var(--elec-surface) !important;
  border-top: 1px solid var(--elec-border) !important;
}

/* ── Animations ── */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInLeft {
  from { opacity: 0; transform: translateX(-40px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 20px rgba(245, 158, 11, 0.3); }
  50%       { box-shadow: 0 0 40px rgba(245, 158, 11, 0.6); }
}
.animate-from-top  { animation: fadeInUp 1s ease 0.1s both; }
.animate-from-left { animation: fadeInLeft 1s ease 0.3s both; }
.elec-brand-icon   { animation: pulse-glow 3s ease infinite; }

/* ── Bolt icon ── */
.fa-bolt {
  display: inline-block;
  transition: transform 0.3s cubic-bezier(.68,-0.55,.27,1.55), color 0.3s;
}

/* ── Legacy class compat ── */
.about-card, .service-card, .tool-card {
  background: var(--elec-surface);
  border: 1px solid var(--elec-border-2);
  border-radius: var(--radius-lg);
  transition: var(--transition);
  box-shadow: none;
}
.section-light .about-card,
.section-light .service-card,
.section-light .tool-card {
  background: white;
  border-color: #e2e8f0;
}
.about-card:hover, .service-card:hover, .tool-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--elec-shadow);
}

/* ── Responsive ── */
@media (max-width: 768px) {
  section {
    padding-top: 1.25rem;
    padding-bottom: 2rem;
  }

  section.hero-section {
    padding-top: 0.5rem;
  }

  .electro-card { padding: 1.5rem; }
}