/* ==========================================================================
   Kaida — kaidamm.com
   Single stylesheet. Dark/neon-green theme. No external assets, no webfonts.
   Brand tokens live in :root — swap these when the real palette/logo arrives.
   ========================================================================== */

:root {
  /* --- brand tokens (edit here) --- */
  --bg:        #0a0f0d;
  --bg-elev:   #0f1613;
  --bg-alt:    #0c1310;
  --fg:        #e8f0ec;
  --muted:     #9fb3aa;
  --border:    #1e2a25;
  --accent:    #39ff88;
  --accent-2:  #26d977;
  --accent-dim:#134e33;
  --danger:    #ff6b6b;

  /* --- type --- */
  --font-sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, "Apple Color Emoji", sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", "SF Mono", "Cascadia Code", Menlo, Consolas, monospace;

  /* --- layout --- */
  --maxw: 72rem;
  --maxw-narrow: 46rem;
  --radius: 12px;
  --pad: clamp(1.1rem, 4vw, 2rem);
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  /* offset anchor jumps so the sticky nav doesn't cover section headings */
  scroll-padding-top: 5rem;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: 1.02rem;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3 { line-height: 1.14; font-weight: 700; letter-spacing: -0.01em; }
h2 { font-size: clamp(1.5rem, 4vw, 2.25rem); margin: 0 0 1rem; }
h3 { font-size: 1.12rem; margin: 0 0 .4rem; }
p { margin: 0 0 1rem; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
strong { color: #fff; font-weight: 700; }

.container { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--pad); }
.narrow { max-width: var(--maxw-narrow); }

.accent { color: var(--accent); }

/* --- accessibility helpers --- */
.visually-hidden {
  position: absolute !important; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 100;
  background: var(--accent); color: #04140b; padding: .6rem 1rem; border-radius: 0 0 8px 0; font-weight: 700;
}
.skip-link:focus { left: 0; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }

/* ==========================================================================
   NAV
   ========================================================================== */
.site-nav {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: var(--maxw); margin-inline: auto; padding: .7rem var(--pad);
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
}
.brand { display: inline-flex; align-items: center; gap: .5rem; color: var(--fg); font-weight: 800; }
.brand:hover { text-decoration: none; }
.brand-text { font-family: var(--font-mono); letter-spacing: .22em; font-size: 1.05rem; }

nav[aria-label="Primary"] { display: flex; align-items: center; }
.nav-links { list-style: none; display: flex; align-items: center; gap: 1.35rem; margin: 0; padding: 0; }
.nav-links a { color: var(--muted); font-size: .93rem; letter-spacing: .02em; }
.nav-links a:hover { color: var(--fg); text-decoration: none; }
.nav-cta {
  color: var(--accent) !important; border: 1px solid var(--accent-dim);
  padding: .4rem .8rem; border-radius: 999px;
}
.nav-cta:hover { background: var(--accent); color: #04140b !important; }

.nav-toggle {
  display: none; width: 42px; height: 38px; border: 1px solid var(--border);
  background: var(--bg-elev); border-radius: 9px; cursor: pointer; position: relative;
}
.nav-toggle-bar, .nav-toggle-bar::before, .nav-toggle-bar::after {
  content: ""; position: absolute; left: 50%; width: 18px; height: 2px; background: var(--fg);
  transform: translateX(-50%); transition: transform .18s ease, opacity .18s ease;
}
.nav-toggle-bar { top: 50%; margin-top: -1px; }
.nav-toggle-bar::before { top: -6px; }
.nav-toggle-bar::after  { top: 6px; }

/* ==========================================================================
   HERO
   ========================================================================== */
.hero { position: relative; overflow: hidden; border-bottom: 1px solid var(--border); }
.hero-grid {
  position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background:
    radial-gradient(60% 55% at 50% 20%, rgba(57,255,136,.12), transparent 70%),
    radial-gradient(rgba(57,255,136,.16) 1px, transparent 1.6px) 0 0 / 24px 24px,
    radial-gradient(rgba(57,255,136,.07) 1px, transparent 1.6px) 12px 12px / 24px 24px;
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, #000 55%, transparent 92%);
          mask-image: linear-gradient(to bottom, #000 0%, #000 55%, transparent 92%);
}
.hero-inner { position: relative; z-index: 1; padding-block: clamp(4rem, 13vw, 9rem) clamp(3rem, 8vw, 6rem); }
.hero h1 { font-size: clamp(2.2rem, 7vw, 4.4rem); margin: 0 0 1.1rem; max-width: 16ch; }
.subline { font-size: clamp(1.05rem, 2.4vw, 1.35rem); color: var(--muted); max-width: 46ch; margin-bottom: 2rem; }
.hero-cta { display: flex; flex-wrap: wrap; gap: .8rem; margin: 0; }

.btn {
  display: inline-flex; align-items: center; gap: .5rem; font-weight: 700; font-size: 1rem;
  padding: .8rem 1.4rem; border-radius: 999px; border: 1px solid transparent; cursor: pointer;
  transition: transform .12s ease, background-color .15s ease, color .15s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary { background: var(--accent); color: #04140b; }
.btn-primary:hover { background: #6dffa8; }
.btn-ghost { background: transparent; color: var(--fg); border-color: var(--border); }
.btn-ghost:hover { border-color: var(--accent-dim); color: var(--accent); }

/* ==========================================================================
   STATS BAND
   ========================================================================== */
.stats { background: var(--bg-elev); border-bottom: 1px solid var(--border); }
.stat-band {
  list-style: none; margin: 0; padding: clamp(2rem, 5vw, 3rem) 0;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem;
}
.stat { text-align: center; }
.stat-num {
  display: block; font-family: var(--font-mono); font-weight: 700; color: var(--accent);
  font-size: clamp(2.2rem, 5.5vw, 3.4rem); line-height: 1; letter-spacing: -0.02em;
}
.stat-label { display: block; color: var(--muted); font-size: .9rem; margin-top: .55rem; max-width: 24ch; margin-inline: auto; }

/* ==========================================================================
   SECTIONS
   ========================================================================== */
.section { padding-block: clamp(3rem, 8vw, 6rem); }
.section-alt { background: var(--bg-alt); border-block: 1px solid var(--border); }
.eyebrow {
  font-family: var(--font-mono); text-transform: uppercase; letter-spacing: .18em;
  font-size: .78rem; color: var(--accent-2); margin: 0 0 .7rem;
}
.section p { color: var(--fg); }
.section .narrow p { color: #d7e3dd; }

/* partners */
.logos { list-style: none; display: flex; flex-wrap: wrap; gap: .8rem; padding: 0; margin: 1.6rem 0 2.4rem; }
.logo-chip {
  display: inline-flex; align-items: center; gap: .55rem; font-family: var(--font-mono);
  font-weight: 700; letter-spacing: .05em; font-size: 1.05rem;
  padding: .6rem 1.1rem; border: 1px solid var(--border); border-radius: 10px; background: var(--bg-elev);
}
.logo-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 10px var(--accent); }

.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.1rem; margin: 1.4rem 0; }
.card { background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.3rem; }
.card p { color: var(--muted); margin: 0; }
.partners-note { color: var(--muted); max-width: 70ch; margin-top: 1.6rem; }

/* ==========================================================================
   CASE STUDY / CHARTS
   ========================================================================== */
.cs-lead { max-width: 68ch; color: var(--muted); }
.cs-placeholder-banner {
  border: 1px dashed var(--accent-dim); background: color-mix(in srgb, var(--accent) 6%, transparent);
  color: #cdeede; padding: .8rem 1rem; border-radius: 10px; font-size: .92rem; max-width: 70ch;
}
.chart { margin: 2.2rem 0 0; padding: 1.3rem; background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius); }
.chart figcaption { font-weight: 700; margin-bottom: .9rem; }
.chart-num {
  display: inline-block; font-family: var(--font-mono); color: #04140b; background: var(--accent);
  border-radius: 6px; padding: 0 .4rem; margin-right: .5rem; font-size: .85em;
}
.chart-svg { width: 100%; height: auto; display: block; }

/* svg internals */
.chart-svg text { fill: var(--muted); font-family: var(--font-mono); }
.chart-svg .grid line { stroke: var(--border); stroke-width: 1; }
.chart-svg .series { fill: none; stroke: var(--accent); stroke-width: 2.5; stroke-linejoin: round; stroke-linecap: round; }
.chart-svg .band { fill: rgba(57,255,136,.07); }
.chart-svg .band-label { fill: var(--accent-2); }
.chart-svg .bar { fill: var(--accent-2); }
.chart-svg .bar-hi { fill: var(--accent); }
.chart-svg .bar-values text, .chart-svg .bar-values { fill: var(--fg); }
.chart-svg .ref { stroke: var(--muted); stroke-dasharray: 4 4; stroke-width: 1; opacity: .6; }

.chart-table { width: 100%; border-collapse: collapse; margin-top: 1.2rem; font-size: .9rem; }
.chart-table caption { text-align: left; color: var(--muted); font-size: .82rem; margin-bottom: .5rem; }
.chart-table th, .chart-table td { text-align: left; padding: .5rem .7rem; border-bottom: 1px solid var(--border); }
.chart-table thead th { color: var(--accent-2); font-size: .8rem; text-transform: uppercase; letter-spacing: .06em; }
.chart-table td { font-family: var(--font-mono); color: var(--fg); }
.chart-table tbody th { font-weight: 500; color: var(--muted); }

.note { font-size: .88rem; color: var(--muted); margin-top: 1rem; }

/* --- case-study explorer --- */
.cs-glance { margin-top: 1.6rem; }
.cs-glance tbody th { white-space: nowrap; }

.cs-explorer { margin-top: 2.4rem; }

.cs-tabbar {
  display: flex; flex-wrap: wrap; justify-content: center; text-align: center;
  gap: 1.4rem 3.5rem; margin-bottom: 1.4rem;
}
.cs-tabgroup { display: flex; flex-direction: column; align-items: center; }
h3.cs-tabgroup-label { margin: 0 0 .65rem; font-size: 1.12rem; color: var(--fg); }
.cs-tabs { display: flex; gap: .6rem; flex-wrap: wrap; justify-content: center; }
.cs-tab {
  font: inherit; font-weight: 700; font-size: 1.12rem; font-family: var(--font-mono);
  color: var(--muted); background: var(--bg-elev); border: 1px solid var(--border);
  border-radius: 999px; padding: .55rem 1.4rem; cursor: pointer;
  transition: color .15s ease, border-color .15s ease, background-color .15s ease;
}
.cs-tab:hover { color: var(--fg); border-color: var(--accent-dim); }
.cs-tab[aria-selected="true"] { color: #04140b; background: var(--accent); border-color: var(--accent); }

.cs-panel { background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.3rem; }
.cs-panel-head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: .8rem; margin-bottom: 1rem; }
.cs-panel-head h3 { margin: 0; display: flex; align-items: center; gap: .6rem; flex-wrap: wrap; }
.cs-badge {
  font-family: var(--font-mono); font-size: .68rem; font-weight: 700; letter-spacing: .08em;
  text-transform: uppercase; padding: .18rem .55rem; border-radius: 999px; border: 1px solid var(--border); color: var(--muted);
}
.cs-badge-holiday { color: var(--accent); border-color: var(--accent-dim); }

.cs-viewtoggle { display: inline-flex; border: 1px solid var(--border); border-radius: 999px; overflow: hidden; }
.cs-viewbtn {
  font: inherit; font-size: .84rem; font-weight: 600; color: var(--muted);
  background: transparent; border: 0; padding: .4rem .95rem; cursor: pointer;
}
.cs-viewbtn[aria-pressed="true"] { background: var(--accent-dim); color: var(--fg); }
.cs-viewbtn:hover { color: var(--fg); }

.cs-holiday-note {
  font-size: .92rem; color: #cdeede; border: 1px dashed var(--accent-dim);
  background: color-mix(in srgb, var(--accent) 6%, transparent);
  border-radius: 10px; padding: .7rem .9rem; max-width: 75ch;
}

.cs-chips { list-style: none; display: flex; flex-wrap: wrap; gap: .7rem; padding: 0; margin: 0 0 1.1rem; }
.cs-chip {
  background: var(--bg); border: 1px solid var(--border); border-radius: 10px;
  padding: .55rem .9rem; min-width: 8.5rem;
}
.cs-chip-num { display: block; font-family: var(--font-mono); font-weight: 700; font-size: 1.25rem; color: var(--accent); }
.cs-chip-label { display: block; font-size: .74rem; color: var(--muted); margin-top: .1rem; }

.cs-chartwrap { position: relative; }
.cs-svg .gridline { stroke: var(--border); stroke-width: 1; }
/* alternating regime shading — dark/light so divisions read at a glance */
.cs-svg .band-dark  { fill: rgba(159,179,170,.14); }
.cs-svg .band-light { fill: rgba(159,179,170,.03); }
.cs-svg .band-holiday { fill: rgba(57,255,136,.07); }
.cs-svg .band-sep { stroke: var(--muted); stroke-width: 1; opacity: .35; }
.cs-svg .band-label { fill: var(--accent-2); }
.cs-svg .cs-line { stroke: var(--accent); stroke-width: 2; stroke-linejoin: round; stroke-linecap: round; }
.cs-svg .cs-area { fill: rgba(57,255,136,.12); stroke: none; }
.cs-svg .cs-cross { stroke: var(--muted); stroke-width: 1; stroke-dasharray: 3 3; opacity: .7; }
.cs-svg .cs-dot { fill: var(--accent); }
.cs-tip {
  display: none; position: absolute; transform: translateX(-50%); pointer-events: none;
  background: var(--bg); border: 1px solid var(--accent-dim); border-radius: 8px;
  padding: .45rem .65rem; font-family: var(--font-mono); font-size: .78rem; line-height: 1.5;
  color: var(--fg); white-space: nowrap; box-shadow: 0 8px 24px rgba(0,0,0,.45); z-index: 5;
}
.cs-tip strong { color: var(--accent); }

.cs-axisnote { font-size: .78rem; color: var(--muted); font-family: var(--font-mono); margin: .5rem 0 0; }
.cs-method { max-width: 80ch; }

/* --- client dashboards --- */
.dash-lead { max-width: 70ch; color: var(--muted); }
.dash-fig { margin: 2rem 0 0; }
.dash-fig img {
  display: block; width: 100%; height: auto;
  border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--bg-elev);
}
.dash-fig figcaption { font-size: .88rem; color: var(--muted); margin-top: .6rem; }

@media (max-width: 46rem) {
  .cs-panel { padding: 1rem; }
  .cs-chip { min-width: calc(50% - .4rem); }
  .cs-panel-head { flex-direction: column; align-items: flex-start; }
}

/* ==========================================================================
   CONTACT FORM
   ========================================================================== */
.contact-form {
  display: grid; grid-template-columns: 1fr 1fr; gap: 1rem 1.2rem; margin-top: 1.8rem;
  background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.6rem;
}
.field { display: flex; flex-direction: column; gap: .35rem; }
.field-full { grid-column: 1 / -1; }
.field label { font-size: .85rem; color: var(--muted); font-weight: 600; }
.field input, .field textarea {
  font: inherit; color: var(--fg); background: var(--bg); border: 1px solid var(--border);
  border-radius: 9px; padding: .7rem .85rem; width: 100%; resize: vertical;
}
.field input:focus, .field textarea:focus { border-color: var(--accent); outline: none; box-shadow: 0 0 0 3px rgba(57,255,136,.15); }
.form-actions { display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; }
.form-status { margin: 0; font-size: .92rem; color: var(--muted); }
.form-status.ok { color: var(--accent); }
.form-status.err { color: var(--danger); }

/* honeypot — off-screen, not display:none (bots skip display:none) */
.hp { position: absolute; left: -5000px; width: 1px; height: 1px; overflow: hidden; }

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer { border-top: 1px solid var(--border); background: var(--bg-elev); padding-block: 2.4rem; }
.footer-brand { display: inline-flex; align-items: center; gap: .5rem; font-family: var(--font-mono); letter-spacing: .2em; font-weight: 700; }
.footer-disclaimer { color: var(--muted); font-size: .85rem; max-width: 75ch; margin: 1rem 0; }
.footer-meta { display: flex; gap: 1.2rem; align-items: center; color: var(--muted); font-size: .85rem; margin: 0; }
.footer-meta a { color: var(--muted); }
.footer-meta a:hover { color: var(--accent); }

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */
@media (max-width: 60rem) {
  .cards { grid-template-columns: 1fr; }
}

@media (max-width: 46rem) {
  .nav-toggle { display: block; }
  nav[aria-label="Primary"] { position: relative; }
  .nav-links {
    position: absolute; right: 0; top: calc(100% + .55rem); flex-direction: column; align-items: flex-start;
    gap: .2rem; background: var(--bg-elev); border: 1px solid var(--border); border-radius: 12px;
    padding: .6rem; min-width: 190px; display: none; box-shadow: 0 16px 40px rgba(0,0,0,.5);
  }
  .nav-links.open { display: flex; }
  .nav-links li { width: 100%; }
  .nav-links a { display: block; padding: .55rem .7rem; width: 100%; }
  .nav-cta { text-align: center; }

  .contact-form { grid-template-columns: 1fr; }
  .field-full, .field { grid-column: 1 / -1; }
}

@media (max-width: 30rem) {
  .stat-band { grid-template-columns: 1fr; }
}

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