/* ================================================
   WattPlanr — Windows Power Reference
   ================================================ */

/* ── Reset & Base ── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg:         #0d0f14;
  --bg-alt:     #111318;
  --bg-card:    #161b24;
  --bg-card-2:  #1c2230;
  --border:     #252d3d;
  --border-lit: #2f3d56;
  --text:       #d4dbe8;
  --text-muted: #7a8aaa;
  --text-dim:   #4f607a;
  --accent:     #3b82f6;
  --accent-glow:#1d4ed8;
  --accent-2:   #8b5cf6;
  --green:      #22c55e;
  --amber:      #f59e0b;
  --red:        #ef4444;
  --teal:       #14b8a6;
  --orange:     #f97316;

  --plan-balanced: #3b82f6;
  --plan-high:     #f97316;
  --plan-saver:    #22c55e;
  --plan-ultimate: #8b5cf6;

  --mode-eff:  #22c55e;
  --mode-bal:  #3b82f6;
  --mode-perf: #f97316;
  --mode-saver:#ef4444;

  --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-mono: 'Cascadia Code', 'Fira Code', 'Consolas', monospace;

  --radius-sm: 4px;
  --radius:    8px;
  --radius-lg: 14px;
  --shadow:    0 2px 12px rgba(0,0,0,.5);
  --shadow-lg: 0 8px 40px rgba(0,0,0,.7);
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 64px;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border-lit); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-dim); }

/* ── Typography ── */
h1, h2, h3, h4 { line-height: 1.2; font-weight: 700; }
h1 { font-size: clamp(2rem, 5vw, 3.4rem); }
h2 { font-size: clamp(1.4rem, 3vw, 2rem); }
h3 { font-size: 1.15rem; }
h4 { font-size: .9rem; text-transform: uppercase; letter-spacing: .06em; }

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

code {
  font-family: var(--font-mono);
  font-size: .82em;
  background: rgba(59,130,246,.1);
  color: #93c5fd;
  padding: .1em .38em;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(59,130,246,.15);
}

/* ── Layout ── */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 80px 0; }
.section-alt { background: var(--bg-alt); }

.section-title {
  margin-bottom: 10px;
  background: linear-gradient(135deg, #e2e8f0, #94a3b8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.section-lead {
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 700px;
  margin-bottom: 40px;
}

/* ── Nav ── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: 56px;
  background: rgba(13,15,20,.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-brand {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -.01em;
}
.nav-brand:hover { text-decoration: none; color: var(--accent); }
.nav-links {
  list-style: none;
  display: flex;
  gap: 28px;
}
.nav-links a {
  color: var(--text-muted);
  font-size: .9rem;
  transition: color .15s;
}
.nav-links a:hover { color: var(--text); text-decoration: none; }

/* ── Hero ── */
.hero {
  padding: 140px 0 80px;
  background:
    radial-gradient(ellipse 80% 60% at 50% -10%, rgba(59,130,246,.12) 0%, transparent 70%),
    var(--bg);
  border-bottom: 1px solid var(--border);
}
.hero-inner { max-width: 800px; padding: 0 24px; }
.hero-kicker {
  display: inline-block;
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(59,130,246,.12);
  border: 1px solid rgba(59,130,246,.25);
  padding: .3em .9em;
  border-radius: 100px;
  margin-bottom: 20px;
}
.hero h1 { margin-bottom: 18px; color: #f1f5f9; }
.amp { color: var(--accent); }
.hero-sub {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 32px;
  max-width: 620px;
}
.hero-chips { display: flex; gap: 12px; flex-wrap: wrap; }
.chip {
  display: inline-block;
  padding: .45em 1.1em;
  background: var(--bg-card);
  border: 1px solid var(--border-lit);
  border-radius: 100px;
  font-size: .875rem;
  color: var(--text);
  transition: border-color .15s, color .15s;
}
.chip:hover { border-color: var(--accent); color: var(--accent); text-decoration: none; }
.chip-alt { border-color: rgba(139,92,246,.4); color: var(--text); }
.chip-alt:hover { border-color: var(--accent-2); color: var(--accent-2); }

/* ── Compare Grid ── */
.compare-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 0;
  align-items: start;
  margin-bottom: 32px;
}
@media (max-width: 768px) {
  .compare-grid { grid-template-columns: 1fr; }
  .compare-divider { display: none; }
}

.compare-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
}
.card-plans { border-top: 3px solid var(--plan-balanced); }
.card-modes { border-top: 3px solid var(--accent-2); }

.compare-icon {
  font-size: 1.8rem;
  margin-bottom: 12px;
}
.compare-card h3 {
  font-size: 1.25rem;
  margin-bottom: 4px;
  color: #f1f5f9;
}
.compare-tagline {
  font-size: .8rem;
  color: var(--text-dim);
  letter-spacing: .04em;
  margin-bottom: 16px;
}
.compare-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.compare-list li {
  padding-left: 18px;
  position: relative;
  color: var(--text-muted);
  font-size: .9rem;
}
.compare-list li::before {
  content: '›';
  position: absolute;
  left: 0;
  color: var(--accent);
}

.compare-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 20px;
  padding-top: 60px;
}
.compare-divider span {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--bg-card-2);
  border: 1px solid var(--border-lit);
  color: var(--text-dim);
  font-size: .8rem;
  font-weight: 700;
  flex-shrink: 0;
}

/* ── Callout ── */
.callout {
  display: flex;
  gap: 14px;
  background: rgba(59,130,246,.07);
  border: 1px solid rgba(59,130,246,.2);
  border-radius: var(--radius);
  padding: 16px 20px;
  font-size: .9rem;
  color: var(--text-muted);
  align-items: flex-start;
}
.callout strong { color: var(--text); }
.callout-icon { font-size: 1.2rem; flex-shrink: 0; padding-top: 1px; }

/* ── Plan Grid ── */
.plan-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
  margin-bottom: 32px;
}
.plan-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.plan-header {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px 22px 16px;
  border-bottom: 1px solid var(--border);
  background: rgba(255,255,255,.02);
}
.plan-balanced { border-left: 4px solid var(--plan-balanced); }
.plan-high     { border-left: 4px solid var(--plan-high); }
.plan-saver    { border-left: 4px solid var(--plan-saver); }
.plan-ultimate { border-left: 4px solid var(--plan-ultimate); }

.plan-icon { font-size: 1.5rem; }
.plan-header h3 { font-size: 1rem; color: #f1f5f9; margin-bottom: 4px; }
.plan-badge {
  display: inline-block;
  font-size: .7rem;
  font-weight: 600;
  letter-spacing: .05em;
  text-transform: uppercase;
  padding: .2em .6em;
  border-radius: 4px;
  background: var(--bg-card-2);
  color: var(--text-dim);
  border: 1px solid var(--border);
}
.plan-badge-default { background: rgba(59,130,246,.15); color: var(--accent); border-color: rgba(59,130,246,.3); }
.plan-badge-hidden  { background: rgba(139,92,246,.12); color: var(--accent-2); border-color: rgba(139,92,246,.25); }

.plan-meta {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 4px 12px;
  padding: 16px 22px;
  border-bottom: 1px solid var(--border);
  font-size: .82rem;
}
.plan-meta dt {
  color: var(--text-dim);
  font-weight: 600;
  white-space: nowrap;
}
.plan-meta dd { color: var(--text-muted); word-break: break-all; }

.plan-desc {
  padding: 14px 22px;
  font-size: .875rem;
  color: var(--text-muted);
  flex: 1;
}

.plan-cmd {
  padding: 12px 22px 16px;
  background: rgba(0,0,0,.2);
  border-top: 1px solid var(--border);
}
.plan-cmd-label {
  display: block;
  font-size: .75rem;
  color: var(--text-dim);
  margin-bottom: 6px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .05em;
}
.plan-cmd code {
  display: block;
  font-size: .78rem;
  white-space: pre-wrap;
  word-break: break-all;
}

/* ── Badge ── */
.badge {
  display: inline-block;
  font-size: .72rem;
  font-weight: 700;
  padding: .18em .55em;
  border-radius: 4px;
  letter-spacing: .04em;
  text-transform: uppercase;
}
.badge-yes { background: rgba(34,197,94,.15); color: var(--green); border: 1px solid rgba(34,197,94,.3); }
.badge-no  { background: rgba(239,68,68,.1);  color: var(--red);   border: 1px solid rgba(239,68,68,.2); }

/* ── Mode Grid ── */
.mode-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
  margin-bottom: 32px;
}
.mode-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px;
  position: relative;
  overflow: hidden;
}
.mode-indicator {
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
}
.mode-efficiency  .mode-indicator { background: var(--mode-eff); }
.mode-balanced    .mode-indicator { background: var(--mode-bal); }
.mode-performance .mode-indicator { background: var(--mode-perf); }
.mode-battery-saver .mode-indicator { background: var(--mode-saver); }

.mode-card h3 { font-size: 1rem; color: #f1f5f9; margin-bottom: 8px; margin-top: 4px; }
.mode-names { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 14px; }
.mode-name-badge {
  font-size: .72rem;
  padding: .2em .6em;
  border-radius: 4px;
  background: var(--bg-card-2);
  border: 1px solid var(--border);
  color: var(--text-dim);
}
.mode-name-w10 { color: var(--text-dim); }

/* ── Attributes Section ── */
.attr-filter {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}
.attr-search-input {
  flex: 1;
  min-width: 280px;
  background: var(--bg-card);
  border: 1px solid var(--border-lit);
  border-radius: var(--radius);
  padding: 10px 16px;
  color: var(--text);
  font-size: .9rem;
  font-family: var(--font-sans);
  outline: none;
  transition: border-color .2s;
}
.attr-search-input:focus { border-color: var(--accent); }
.attr-search-input::placeholder { color: var(--text-dim); }
.attr-search-count {
  font-size: .85rem;
  color: var(--text-muted);
  white-space: nowrap;
}

/* ── Subgroup (details) ── */
.subgroup {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  margin-bottom: 12px;
  overflow: hidden;
}
.subgroup[open] { border-color: var(--border-lit); }

.subgroup-title {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 20px;
  cursor: pointer;
  user-select: none;
  font-weight: 700;
  font-size: .95rem;
  color: #f1f5f9;
  list-style: none;
  flex-wrap: wrap;
}
.subgroup-title::-webkit-details-marker { display: none; }
.subgroup-title::before {
  content: '▶';
  font-size: .7rem;
  color: var(--text-dim);
  flex-shrink: 0;
  transition: transform .15s;
}
.subgroup[open] > .subgroup-title::before { transform: rotate(90deg); }

.subgroup-icon { font-size: 1rem; flex-shrink: 0; }
.subgroup-guid {
  margin-left: auto;
  font-size: .75rem;
  color: var(--text-dim);
  font-weight: 400;
  background: none;
  border: none;
  padding: 0;
}

.subgroup-note {
  padding: 10px 22px 6px;
  font-size: .85rem;
  color: var(--text-muted);
  background: rgba(59,130,246,.04);
  border-bottom: 1px solid var(--border);
}

.attr-subheading {
  color: var(--text-muted);
  font-size: .75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .09em;
  padding: 14px 22px 6px;
  background: rgba(0,0,0,.15);
  border-bottom: 1px solid var(--border);
  border-top: 1px solid var(--border);
  margin-top: 0;
}
.subgroup > .attr-subheading:first-of-type { border-top: none; }

/* ── Tables ── */
.table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.attr-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .84rem;
}
.attr-table thead tr {
  background: rgba(0,0,0,.3);
  border-bottom: 1px solid var(--border-lit);
}
.attr-table th {
  padding: 10px 14px;
  text-align: left;
  color: var(--text-dim);
  font-size: .75rem;
  text-transform: uppercase;
  letter-spacing: .06em;
  font-weight: 700;
  white-space: nowrap;
}
.attr-table td {
  padding: 9px 14px;
  color: var(--text-muted);
  border-bottom: 1px solid rgba(37,45,61,.6);
  vertical-align: top;
}
.attr-table tr:last-child td { border-bottom: none; }
.attr-table tr:hover td { background: rgba(255,255,255,.025); }
.attr-table td:first-child { color: var(--text); font-weight: 500; min-width: 220px; }
.attr-table td code { white-space: nowrap; }

/* ── CMD Reference ── */
.cmd-reference {
  margin-top: 48px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.cmd-reference h3 {
  padding: 16px 22px;
  background: rgba(0,0,0,.2);
  border-bottom: 1px solid var(--border);
  font-size: .95rem;
  color: #f1f5f9;
}
.cmd-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .85rem;
}
.cmd-table th {
  padding: 10px 18px;
  text-align: left;
  background: rgba(0,0,0,.2);
  color: var(--text-dim);
  font-size: .75rem;
  text-transform: uppercase;
  letter-spacing: .06em;
  border-bottom: 1px solid var(--border);
}
.cmd-table td {
  padding: 9px 18px;
  border-bottom: 1px solid rgba(37,45,61,.5);
  color: var(--text-muted);
  vertical-align: middle;
}
.cmd-table tr:last-child td { border-bottom: none; }
.cmd-table tr:hover td { background: rgba(255,255,255,.02); }
.cmd-table td:first-child { white-space: nowrap; }

/* ── Footer ── */
.footer {
  padding: 36px 0;
  border-top: 1px solid var(--border);
  background: var(--bg);
  text-align: center;
}
.footer p { color: var(--text-dim); font-size: .85rem; }
.footer-note { margin-top: 6px; font-size: .78rem; color: var(--text-dim); opacity: .7; }

/* ── Highlight for search ── */
.hl { background: rgba(251,191,36,.25); color: #fbbf24; border-radius: 2px; }

/* ── Row hidden by search ── */
tr.hidden-row { display: none; }
.subgroup.all-hidden { opacity: .4; }

/* ── Responsive ── */
@media (max-width: 640px) {
  .nav-links { display: none; }
  .hero { padding: 100px 0 60px; }
  .plan-grid, .mode-grid { grid-template-columns: 1fr; }
  .subgroup-guid { display: none; }
  .attr-table th:nth-child(3),
  .attr-table td:nth-child(3) { display: none; }
}