/* ==========================================================================
   NDA Power Consulting - Styles
   ========================================================================== */

/* --- CSS Variables (Theme Tokens) --- */
:root {
  /* Base palette */
  --charcoal: #101418;
  --graphite: #1A222A;
  --neon: #32D583;
  --steel: #64748B;
  --white: #ffffff;

  /* Dark theme (default) */
  --bg: #101418;
  --panel: #1A222A;
  --text: #E5E7EB;
  --muted: #94A3B8;
  --border: #2a3340;
  --link: #93c5fd;
  --header-bg: #1A222A;
  --header-border: #222b36;
  --hero-bg: linear-gradient(180deg, #1A222A, #101418);
}

:root[data-theme="light"] {
  --bg: #ffffff;
  --panel: #ffffff;
  --text: #0b1220;
  --muted: #475569;
  --border: #e5e7eb;
  --link: #1e40af;
  --header-bg: #ffffff;
  --header-border: #e5e7eb;
  --hero-bg: linear-gradient(180deg, #ffffff, #ffffff);
}

/* --- Reset & Base --- */
* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
}

h1, h2, h3 { font-family: Sora, Inter, system-ui, sans-serif; }
h2 { margin: 0 0 10px; }

a { color: var(--link); text-decoration: none; }

.container { max-width: 1180px; margin: 0 auto; padding: 0 20px; }

/* --- Header --- */
.header {
  position: sticky;
  top: 0;
  background: var(--header-bg);
  border-bottom: 1px solid var(--header-border);
  z-index: 10;
}

.header .inner {
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: nowrap;
  gap: 40px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
  margin-right: 40px;
}

.brand img {
  height: 44px;
  padding: 2px 6px;
  background: #f6f7f9;
  border-radius: 10px;
  box-shadow: 0 1px 6px rgba(0,0,0,.15);
}

.lockup .title {
  font-size: 17px;
  font-weight: 700;
  white-space: nowrap;
  color: var(--text);
}

.lockup .sub {
  font-size: 12px;
  color: var(--steel);
  opacity: .9;
  white-space: nowrap;
}

/* --- Navigation --- */
.nav {
  display: flex;
  gap: 20px;
  align-items: center;
  flex-shrink: 0;
}

.nav a {
  color: var(--text);
  opacity: .9;
}

.nav a:hover { opacity: 1; }

.menu {
  display: none;
  background: transparent;
  border: 0;
  color: var(--text);
  font-size: 22px;
  cursor: pointer;
}

.cta { flex-shrink: 0; }

/* --- Buttons & Pills --- */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px 6px;
}

.pill button {
  border: 0;
  background: transparent;
  color: var(--text);
  padding: 6px 10px;
  border-radius: 999px;
  cursor: pointer;
}

.pill button.active {
  background: var(--neon);
  color: #111827;
}

.btn {
  display: inline-block;
  border-radius: 12px;
  padding: 10px 16px;
  font-weight: 700;
  cursor: pointer;
}

.btn.primary {
  background: var(--neon);
  color: #111827;
}

.btn.secondary {
  background: transparent;
  border: 1px solid var(--steel);
  color: var(--text);
}

.btn.ghost {
  background: transparent;
  color: var(--text);
}

/* --- Hero Section --- */
.hero {
  position: relative;
  padding: 100px 0 76px;
  background: var(--hero-bg);
}

.hero h1 {
  font-size: 40px;
  margin: 0 0 10px;
}

.hero .sub {
  color: var(--steel);
  max-width: 820px;
}

/* Animated signal background */
.signal {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: .25;
}

.signal svg path {
  stroke: var(--neon);
  stroke-width: 1.5;
  fill: none;
  stroke-dasharray: 6 8;
  animation: dash 8s linear infinite;
}

@keyframes dash {
  to { stroke-dashoffset: -280; }
}

/* --- Actions --- */
.actions {
  display: flex;
  gap: 12px;
  margin-top: 16px;
  flex-wrap: wrap;
}

/* --- KPIs --- */
.kpis {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-top: 28px;
}

.kpi {
  background: var(--panel);
  border: 1px solid var(--border);
  border-top: 3px solid var(--neon);
  border-radius: 12px;
  padding: 16px;
  text-align: center;
  box-shadow: 0 10px 26px rgba(0,0,0,.25);
}

.kpi .n {
  font-size: 22px;
  font-weight: 800;
}

.kpi .t {
  color: var(--steel);
  font-size: 13px;
}

/* --- Sections --- */
.section {
  padding: 72px 0;
  border-top: 1px solid var(--border);
}

.lead { color: var(--steel); }

/* --- Service Cards --- */
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px;
  box-shadow: 0 10px 26px rgba(0,0,0,.25);
}

.card::before {
  content: "";
  display: block;
  height: 3px;
  background: var(--neon);
  border-radius: 12px 12px 0 0;
  margin: -18px -18px 12px;
}

.card h3 {
  font-size: 20px;
  line-height: 1.25;
  margin: 10px 0 8px;
}

.card p {
  font-size: 16px;
  line-height: 1.6;
}

/* --- About Section --- */
.about-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 28px;
}

.about-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  box-shadow: 0 10px 26px rgba(0,0,0,.25);
}

.about-card h3 {
  color: var(--neon);
  margin: 0 0 12px;
}

.values-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.values-list li {
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
  line-height: 1.5;
}

.values-list li:last-child {
  border-bottom: none;
}

/* 9-card service grid */
.cards.nine {
  grid-template-columns: repeat(3, 1fr);
}

/* --- Case Studies --- */
.casegrid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.case {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
}

.flag {
  display: inline-block;
  background: transparent;
  color: var(--neon);
  border: 1px solid var(--neon);
  padding: 4px 8px;
  border-radius: 6px;
}

/* --- Contact Section --- */
.contact {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 18px;
}

.form {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
}

input, textarea {
  width: 100%;
  padding: 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  margin-bottom: 10px;
}

/* --- Footer --- */
.footer {
  padding: 28px 0;
  border-top: 1px solid var(--border);
  color: var(--steel);
  font-size: 14px;
}

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

@media (max-width: 900px) {
  /* Mobile navigation */
  .nav {
    display: none;
    position: absolute;
    top: 80px;
    left: 0;
    right: 0;
    background: var(--panel);
    padding: 12px;
    flex-direction: column;
    border-bottom: 1px solid var(--border);
  }

  .nav.active { display: flex; }
  .menu { display: block; }

  /* Grid adjustments */
  .kpis { grid-template-columns: repeat(2, 1fr); }
  .cards { grid-template-columns: repeat(2, 1fr); }
  .cards.nine { grid-template-columns: repeat(2, 1fr); }
  .about-grid { grid-template-columns: 1fr; }
  .casegrid { grid-template-columns: 1fr; }
  .contact { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  .cards { grid-template-columns: 1fr; }
  .cards.nine { grid-template-columns: 1fr; }
  .kpis { grid-template-columns: 1fr; }
}