/* ── PeakPulse Labs — shared stylesheet ──────────────────────────────── */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:      #00151a;
  --bg2:     #001f28;
  --cc:      #00f0ff;
  --pink:    #ff006e;
  --card:    rgba(255,255,255,0.04);
  --bdr:     rgba(255,255,255,0.08);
  --muted:   rgba(255,255,255,0.42);
  --text:    rgba(255,255,255,0.90);
  --radius:  14px;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  font-size: 15px;
  line-height: 1.55;
  min-height: 100vh;
}

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

/* ── Nav ─────────────────────────────────────────────────────────────── */

.labs-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
  height: 56px;
  background: rgba(0,21,26,0.92);
  border-bottom: 1px solid var(--bdr);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 100;
}

.labs-logo {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-size: .9375rem;
  color: var(--text);
  text-decoration: none;
  font-weight: 500;
}
.labs-logo:hover { text-decoration: none; }
.labs-logo-icon { font-size: 1.1rem; }
.labs-logo strong { color: var(--cc); font-weight: 800; }

.labs-nav-home {
  display: flex;
  align-items: center;
  gap: .35rem;
  font-size: .775rem;
  font-weight: 600;
  color: var(--muted);
  text-decoration: none;
  padding: .3rem .65rem;
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 20px;
  transition: color .2s, border-color .2s;
  white-space: nowrap;
}
.labs-nav-home:hover {
  color: var(--text);
  border-color: rgba(255,255,255,.25);
  text-decoration: none;
}

.labs-nav-right {
  display: flex;
  align-items: center;
  gap: .75rem;
}

.labs-avatar {
  width: 30px; height: 30px;
  border-radius: 50%;
  object-fit: cover;
  border: 1.5px solid var(--cc);
}
.labs-avatar-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,240,255,0.15);
  color: var(--cc);
  font-weight: 700;
  font-size: .8rem;
}

.labs-username {
  font-size: .8125rem;
  color: var(--muted);
  max-width: 140px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.labs-nav-btn {
  padding: .375rem .875rem;
  border-radius: 7px;
  border: none;
  font-size: .8rem;
  font-weight: 700;
  cursor: pointer;
  transition: opacity .2s, transform .1s;
}
.labs-nav-btn:hover { opacity: .85; transform: translateY(-1px); }
.labs-nav-btn:active { transform: translateY(0); }

.labs-signin-btn {
  background: var(--cc);
  color: #000;
  display: flex;
  align-items: center;
  gap: .4rem;
}

.labs-signout-btn {
  background: rgba(255,255,255,0.07);
  color: var(--muted);
  border: 1px solid var(--bdr);
}

/* ── Language picker ─────────────────────────────────────────────────── */

.labs-lang-picker {
  background: rgba(255,255,255,0.06);
  color: var(--muted);
  border: 1px solid var(--bdr);
  border-radius: 7px;
  padding: .3rem .5rem;
  font-size: .75rem;
  cursor: pointer;
  outline: none;
  transition: border-color .2s, color .2s;
}
.labs-lang-picker:hover,
.labs-lang-picker:focus {
  border-color: var(--cc);
  color: var(--text);
}
.labs-lang-picker option {
  background: #1a1a1a;
  color: var(--text);
}

/* RTL layout adjustment */
[dir="rtl"] .labs-nav {
  flex-direction: row-reverse;
}

/* ── Page shell ──────────────────────────────────────────────────────── */

.labs-page {
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem 1.25rem 4rem;
}

.labs-eyebrow {
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--cc);
  margin-bottom: .5rem;
}

.labs-hero {
  text-align: center;
  padding: 2rem 0 2.5rem;
}

.labs-hero h1 {
  font-size: clamp(1.9rem, 5vw, 2.6rem);
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: .625rem;
  background: linear-gradient(135deg, var(--cc) 0%, var(--pink) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.labs-hero p {
  color: var(--muted);
  font-size: .9375rem;
  max-width: 440px;
  margin: 0 auto;
}

/* ── Cards ───────────────────────────────────────────────────────────── */

.labs-card {
  background: var(--card);
  border: 1px solid var(--bdr);
  border-radius: var(--radius);
  padding: 1.375rem;
  transition: border-color .3s, box-shadow .3s;
}
.labs-card:hover {
  border-color: rgba(0,240,255,0.25);
  box-shadow: 0 0 20px -8px rgba(0,240,255,0.2);
}

/* ── Tool grid (index page) ──────────────────────────────────────────── */

.labs-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .875rem;
}

@media (max-width: 540px) {
  .labs-grid { grid-template-columns: 1fr; }
}

.labs-tool-card {
  background: var(--card);
  border: 1px solid var(--bdr);
  border-radius: var(--radius);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: .625rem;
  text-decoration: none;
  color: var(--text);
  transition: border-color .25s, box-shadow .25s, transform .15s;
  position: relative;
  overflow: hidden;
}
.labs-tool-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--tool-color, var(--cc)), transparent);
  opacity: 0;
  transition: opacity .3s;
}
.labs-tool-card:hover {
  border-color: var(--tool-color, var(--cc));
  box-shadow: 0 0 24px -8px var(--tool-color, var(--cc));
  transform: translateY(-2px);
  text-decoration: none;
}
.labs-tool-card:hover::before { opacity: 1; }

.labs-tool-icon {
  font-size: 1.5rem;
  line-height: 1;
}

.labs-tool-name {
  font-size: .9375rem;
  font-weight: 800;
}

.labs-tool-desc {
  font-size: .8125rem;
  color: var(--muted);
  line-height: 1.45;
}

.labs-tool-badge {
  display: inline-block;
  font-size: .65rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  padding: .2rem .5rem;
  border-radius: 4px;
  background: rgba(0,240,255,0.12);
  color: var(--cc);
  margin-top: auto;
  align-self: flex-start;
}

/* ── Section headings ────────────────────────────────────────────────── */

.labs-section-title {
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: .875rem;
}

/* ── Form elements ───────────────────────────────────────────────────── */

.labs-field {
  display: flex;
  flex-direction: column;
  gap: .3rem;
}

.labs-label {
  font-size: .7125rem;
  font-weight: 600;
  color: var(--muted);
}

.labs-input {
  background: rgba(255,255,255,0.07);
  border: 1px solid var(--bdr);
  border-radius: 8px;
  padding: .5rem .75rem;
  color: var(--text);
  font-size: .9375rem;
  font-weight: 700;
  width: 100%;
  transition: border-color .2s;
}
.labs-input:focus {
  outline: none;
  border-color: var(--cc);
}

/* ── Buttons ─────────────────────────────────────────────────────────── */

.labs-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .4rem;
  padding: .625rem 1.25rem;
  border-radius: 8px;
  border: none;
  font-size: .875rem;
  font-weight: 700;
  cursor: pointer;
  transition: opacity .2s, transform .1s;
}
.labs-btn:hover:not(:disabled) { opacity: .88; transform: translateY(-1px); }
.labs-btn:active { transform: translateY(0); }
.labs-btn:disabled { opacity: .35; cursor: not-allowed; transform: none; }

.labs-btn-primary { background: var(--cc); color: #000; }
.labs-btn-secondary {
  background: rgba(255,255,255,0.07);
  color: var(--text);
  border: 1px solid var(--bdr);
}
.labs-btn-danger { background: #ff4466; color: #fff; }

.labs-btn-full { width: 100%; }

/* ── Login modal ─────────────────────────────────────────────────────── */

.labs-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.72);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 1rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity .25s;
}
.labs-modal-overlay.active {
  opacity: 1;
  pointer-events: all;
}

.labs-modal {
  background: #001f28;
  border: 1px solid rgba(0,240,255,0.20);
  border-radius: 18px;
  padding: 2rem 1.75rem;
  max-width: 380px;
  width: 100%;
  text-align: center;
  position: relative;
  box-shadow: 0 0 48px -12px rgba(0,240,255,0.25);
}

.labs-modal-close {
  position: absolute;
  top: .875rem; right: .875rem;
  background: none;
  border: none;
  color: var(--muted);
  font-size: 1rem;
  cursor: pointer;
  line-height: 1;
  padding: .25rem;
}
.labs-modal-close:hover { color: var(--text); }

.labs-modal-icon { font-size: 2rem; margin-bottom: .75rem; }

.labs-modal-title {
  font-size: 1.25rem;
  font-weight: 900;
  margin-bottom: .5rem;
}

.labs-modal-body {
  font-size: .875rem;
  color: var(--muted);
  margin-bottom: 1.25rem;
  line-height: 1.5;
}

.labs-google-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: .625rem;
  width: 100%;
  padding: .75rem 1rem;
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,0.14);
  background: rgba(255,255,255,0.07);
  color: var(--text);
  font-size: .9rem;
  font-weight: 700;
  cursor: pointer;
  transition: background .2s, border-color .2s;
  margin-bottom: .625rem;
}
.labs-google-btn:hover {
  background: rgba(255,255,255,0.11);
  border-color: rgba(255,255,255,0.25);
}

.labs-modal-dismiss {
  background: none;
  border: none;
  color: var(--muted);
  font-size: .8125rem;
  cursor: pointer;
  padding: .375rem;
  margin-bottom: .375rem;
}
.labs-modal-dismiss:hover { color: var(--text); }

.labs-modal-note {
  font-size: .7rem;
  color: rgba(255,255,255,0.22);
  margin-top: .375rem;
}

/* ── Utility ─────────────────────────────────────────────────────────── */

.hidden { display: none !important; }

.labs-muted { color: var(--muted); }

.labs-divider {
  height: 1px;
  background: var(--bdr);
  margin: 1.5rem 0;
}

.labs-back {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  font-size: .8rem;
  color: var(--muted);
  margin-bottom: 1.25rem;
}
.labs-back:hover { color: var(--text); text-decoration: none; }