/* EnergieMIND Network — Corporate Dark Theme */
:root {
  --color-bg: #1a2332;
  --color-bg-alt: #1e2a3c;
  --color-surface: #243044;
  --color-surface-raised: #2a384c;
  --color-border: #364558;
  --color-border-soft: #2d3d52;
  --color-text: #e8edf4;
  --color-text-muted: #94a3b8;
  --color-primary: #14b88a;
  --color-primary-dark: #0f9a74;
  --color-primary-light: rgba(20, 184, 138, 0.12);
  --color-accent: #4a9eff;
  --color-accent-soft: rgba(74, 158, 255, 0.1);
  --color-accent-deep: #2d6cb3;
  --color-primary-soft: rgba(20, 184, 138, 0.15);
  --color-shadow: 0 4px 24px rgba(0, 0, 0, 0.25);
  --color-shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.35);
  --tone-0: #1a2332;
  --tone-1: #1c2638;
  --tone-2: #1e2d42;
  --tone-3: #212f44;
  --font-sans: 'DM Sans', 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;
  --radius: 12px;
  --radius-lg: 20px;
  --header-h: 76px;
  --max-w: 1180px;
  --transition: 0.22s ease;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 20px);
}

body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

[dir="rtl"] body { text-align: right; }

img { max-width: 100%; height: auto; display: block; }

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition);
}
a:hover { color: var(--color-accent); }

.container {
  width: min(100% - 2.5rem, var(--max-w));
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  background: var(--color-primary);
  color: #fff;
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  z-index: 9999;
  font-weight: 600;
}
.skip-link:focus { top: 1rem; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(22, 30, 44, 0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border-soft);
  height: var(--header-h);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.2);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
  gap: 1rem;
}

.logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  line-height: 0;
}
.logo img {
  height: 38px;
  width: auto;
  transition: opacity var(--transition);
}
.logo:hover img { opacity: 0.88; }

.footer-logo {
  display: inline-block;
  line-height: 0;
  margin-bottom: 0.25rem;
}
.footer-logo img { height: 36px; width: auto; }

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}
.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: var(--transition);
}

.main-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.2rem 0.85rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.main-nav a {
  color: var(--color-text-muted);
  font-size: 0.8125rem;
  font-weight: 500;
  white-space: nowrap;
  padding: 0.25rem 0;
  border-bottom: 2px solid transparent;
}
.main-nav a:hover,
.main-nav a.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

.lang-label {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
}

.lang-select {
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 0.45rem 0.65rem;
  font-size: 0.8125rem;
  font-family: inherit;
  cursor: pointer;
  max-width: 148px;
}
.lang-select:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.9375rem;
  font-family: inherit;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  text-align: center;
}
.btn-primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, #0ea572 100%);
  color: #fff;
  box-shadow: 0 4px 16px rgba(20, 184, 138, 0.25);
}
.btn-primary:hover {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 6px 24px rgba(20, 184, 138, 0.35);
}
.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text);
  border-color: var(--color-border);
}
.btn-secondary:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-light);
}
.btn-outline {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}
.btn-outline:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: var(--color-accent-soft);
}
.btn-sm { padding: 0.45rem 0.95rem; font-size: 0.8125rem; }
.btn-lg { padding: 0.9rem 1.85rem; font-size: 1rem; }
.btn:disabled {
  opacity: 0.65;
  cursor: not-allowed;
  transform: none;
}

/* Hero */
.hero {
  position: relative;
  padding: 5.5rem 0 4.5rem;
  overflow: hidden;
  background: linear-gradient(145deg, #161e2e 0%, #1a2840 35%, #1e3248 70%, #1a2332 100%);
}
.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 65% 50% at 10% 30%, rgba(20, 184, 138, 0.14), transparent),
    radial-gradient(ellipse 50% 40% at 90% 20%, rgba(74, 158, 255, 0.12), transparent),
    radial-gradient(ellipse 40% 30% at 50% 100%, rgba(45, 108, 179, 0.08), transparent);
  z-index: 0;
}
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(180deg, rgba(0,0,0,0.6) 0%, transparent 85%);
}
.hero-content { position: relative; z-index: 1; }

.hero-badge {
  display: inline-block;
  background: var(--color-primary-light);
  color: var(--color-primary);
  padding: 0.4rem 1rem;
  border-radius: 999px;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  margin-bottom: 1.5rem;
  border: 1px solid rgba(20, 184, 138, 0.25);
}

.hero h1 {
  font-size: clamp(2.125rem, 5vw, 3.5rem);
  line-height: 1.12;
  font-weight: 700;
  margin: 0 0 1.25rem;
  max-width: 20ch;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, #f1f5f9 0%, var(--color-primary) 55%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  max-width: 58ch;
  margin: 0 0 2.25rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 3rem;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1.25rem;
  padding-top: 2.25rem;
  border-top: 1px solid var(--color-border-soft);
  max-width: 640px;
}
.stat {
  background: rgba(36, 48, 68, 0.6);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius);
  padding: 1.125rem 1.25rem;
  backdrop-filter: blur(8px);
}
.stat-value {
  display: block;
  font-size: 1.625rem;
  font-weight: 700;
  color: var(--color-primary);
  font-family: var(--font-mono);
  line-height: 1.2;
}
.stat-label {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-top: 0.25rem;
}

/* Sections — gradient transitions */
.section {
  position: relative;
  padding: 5rem 0;
  overflow: hidden;
}
.section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(20, 184, 138, 0.35), rgba(74, 158, 255, 0.35), transparent);
  opacity: 0.6;
}
.section-tone-0 {
  background: linear-gradient(180deg, var(--tone-0) 0%, var(--tone-1) 100%);
}
.section-tone-1 {
  background: linear-gradient(180deg, var(--tone-1) 0%, var(--tone-2) 50%, var(--tone-1) 100%);
}
.section-tone-2 {
  background: linear-gradient(180deg, var(--tone-2) 0%, var(--tone-3) 100%);
}
.section-tone-3 {
  background: linear-gradient(180deg, var(--tone-3) 0%, #1a2840 50%, var(--tone-2) 100%);
}
.section-alt::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 50% at 50% 0%, rgba(74, 158, 255, 0.06), transparent);
  pointer-events: none;
}
.section > .container { position: relative; z-index: 1; }

.section-header { margin-bottom: 1.5rem; }
.section-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: 12px;
  font-size: 1.25rem;
  margin-bottom: 0.875rem;
  border: 1px solid rgba(20, 184, 138, 0.2);
}
.section-header h2 {
  font-size: clamp(1.75rem, 3vw, 2.35rem);
  margin: 0 0 0.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text);
}
.section-subtitle {
  color: var(--color-accent);
  font-size: 1rem;
  font-weight: 600;
  margin: 0;
}
.section-intro {
  color: var(--color-text-muted);
  font-size: 1.0625rem;
  max-width: 70ch;
  margin: 0 0 2.5rem;
}
.section-cta { margin-top: 2.25rem; }

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
}
.feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-lg);
  padding: 1.625rem;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
  box-shadow: var(--color-shadow);
}
.feature-card:hover {
  border-color: rgba(20, 184, 138, 0.4);
  transform: translateY(-3px);
  box-shadow: var(--color-shadow-lg);
}
.feature-card h3 {
  margin: 0 0 0.625rem;
  font-size: 1.0625rem;
  color: var(--color-text);
  font-weight: 600;
}
.feature-card p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}
.card-link {
  display: block;
  font-weight: 600;
  font-size: 1.0625rem;
  margin-bottom: 0.625rem;
  color: var(--color-primary);
}
.card-link:hover { color: var(--color-accent); }

/* ENM notice */
.enm-section { padding: 3.5rem 0; }
.enm-card {
  background: linear-gradient(135deg, rgba(45, 108, 179, 0.2) 0%, rgba(20, 184, 138, 0.12) 100%);
  border: 1px solid rgba(74, 158, 255, 0.25);
  border-radius: var(--radius-lg);
  padding: 2rem 2.25rem;
  max-width: 72ch;
  box-shadow: var(--color-shadow);
}
.enm-card h2 {
  margin: 0 0 0.75rem;
  font-size: 1.25rem;
  color: var(--color-accent);
  font-weight: 700;
}
.enm-card p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.9375rem;
}

/* Form */
.partner-form {
  max-width: 720px;
  background: var(--color-surface);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  box-shadow: var(--color-shadow-lg);
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
.form-group { margin-bottom: 1.25rem; }
.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
  color: var(--color-text);
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.8rem 1rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  color: var(--color-text);
  font-family: inherit;
  font-size: 0.9375rem;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-soft);
}
.form-group input::placeholder,
.form-group textarea::placeholder {
  color: #64748b;
}
.form-disclaimer {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin: 0 0 1.25rem;
  line-height: 1.5;
}
.form-success {
  margin-top: 1rem;
  padding: 1rem 1.25rem;
  background: var(--color-primary-light);
  border: 1px solid rgba(20, 184, 138, 0.3);
  border-radius: var(--radius);
  color: var(--color-primary);
  font-weight: 600;
}
.form-error {
  margin-top: 1rem;
  padding: 1rem 1.25rem;
  background: rgba(239, 68, 68, 0.12);
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-radius: var(--radius);
  color: #fca5a5;
  font-weight: 500;
}

/* FAQ */
.faq-list {
  max-width: 800px;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.faq-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--color-shadow);
  transition: border-color var(--transition);
}
.faq-item[open] { border-color: rgba(20, 184, 138, 0.35); }
.faq-item summary {
  padding: 1.125rem 1.25rem;
  cursor: pointer;
  font-weight: 600;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--color-text);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+';
  font-size: 1.25rem;
  color: var(--color-primary);
  flex-shrink: 0;
  margin-inline-start: 1rem;
  font-weight: 400;
}
.faq-item[open] summary::after { content: '−'; }
.faq-answer { padding: 0 1.25rem 1.125rem; }
.faq-answer p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.9375rem;
}

/* Footer */
.site-footer {
  background: linear-gradient(180deg, #121a28 0%, #0d1420 100%);
  color: #cbd5e1;
  padding: 4rem 0 2rem;
  margin-top: 0;
  border-top: 1px solid var(--color-border-soft);
}
.site-footer a { color: #94a3b8; }
.site-footer a:hover { color: var(--color-primary); }
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1.5fr 1fr;
  gap: 2.5rem;
}
.footer-brand p {
  color: #94a3b8;
  font-size: 0.9375rem;
  margin: 1rem 0 0;
  max-width: 36ch;
  line-height: 1.6;
}
.footer-nav h3,
.footer-contact h3 {
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #64748b;
  margin: 0 0 1rem;
  font-weight: 600;
}
.footer-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.footer-nav a,
.footer-contact a { font-size: 0.875rem; }
.footer-legal {
  font-size: 0.8125rem;
  color: #64748b;
  margin-top: 1rem;
}

/* Responsive */
@media (max-width: 1024px) {
  .main-nav { display: none; }
  .main-nav.is-open {
    display: block;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: rgba(22, 30, 44, 0.98);
    border-bottom: 1px solid var(--color-border-soft);
    padding: 1rem 1.25rem;
    box-shadow: var(--color-shadow-lg);
  }
  .main-nav.is-open ul { flex-direction: column; gap: 0.5rem; }
  .main-nav.is-open a {
    display: block;
    padding: 0.5rem 0;
    border-bottom: none;
  }
  .menu-toggle { display: flex; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .header-actions .btn-sm { display: none; }
  .hero { padding: 3.5rem 0 3rem; }
  .hero h1 { max-width: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}

/* Partner App promo (main site) */
.partner-app-section { padding-block: 4rem; }
.partner-app-card {
  display: grid;
  gap: 2rem;
  padding: 2rem;
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  box-shadow: var(--color-shadow-lg);
}
@media (min-width: 900px) {
  .partner-app-card { grid-template-columns: 1.1fr 0.9fr; align-items: start; }
}
.partner-app-copy .kicker {
  display: inline-block;
  margin-bottom: 0.65rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-primary);
}
.partner-app-copy h2 {
  margin: 0 0 0.75rem;
  font-size: clamp(1.35rem, 3vw, 1.85rem);
  line-height: 1.25;
}
.partner-app-copy p {
  margin: 0 0 1.25rem;
  color: var(--color-text-muted);
  max-width: 52ch;
}
.partner-app-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; }
.partner-app-install { display: grid; gap: 0.75rem; }
.install-step {
  padding: 1rem 1.1rem;
  border-radius: var(--radius);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border-soft);
}
.install-platform {
  display: block;
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 0.35rem;
}
.install-step p { margin: 0; color: var(--color-text-muted); font-size: 0.875rem; line-height: 1.5; }

.site-app-banner {
  position: fixed;
  left: 1rem;
  right: 1rem;
  bottom: 1rem;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.85rem 1rem;
  border-radius: 14px;
  background: rgba(36, 48, 68, 0.96);
  border: 1px solid var(--color-border);
  box-shadow: var(--color-shadow-lg);
  backdrop-filter: blur(12px);
}
.site-app-banner p { margin: 0; font-size: 0.8125rem; line-height: 1.4; }
.site-app-banner-actions { display: flex; gap: 0.5rem; flex-shrink: 0; }
@media (max-width: 640px) {
  .site-app-banner { flex-direction: column; align-items: stretch; }
  .site-app-banner-actions { justify-content: stretch; }
  .site-app-banner-actions .btn { flex: 1; }
}