/* ============================================
   WebPulse — Stylesheet
   Design: dark monitoring console aesthetic
   Monospace data, clean signal-green accents
   ============================================ */

/* ── Fonts ─────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

/* ── Variables ──────────────────────────────── */
:root {
  --bg-0:        #0b0e13;   /* deepest background */
  --bg-1:        #111620;   /* card background */
  --bg-2:        #18202e;   /* elevated card */
  --bg-3:        #1f2a3c;   /* input / hover */
  --border:      #263147;
  --border-hi:   #3a4f70;

  --text-1:      #e8edf5;   /* primary text */
  --text-2:      #8a9bb8;   /* secondary text */
  --text-3:      #556070;   /* muted */

  --green:       #00e5a0;   /* UP / success */
  --green-dim:   #00805a;
  --green-bg:    rgba(0,229,160,.08);
  --red:         #ff4d6a;   /* DOWN / error */
  --red-dim:     #8c1e2d;
  --red-bg:      rgba(255,77,106,.08);
  --yellow:      #ffb830;   /* warning / pending */
  --yellow-bg:   rgba(255,184,48,.08);
  --blue:        #4d9eff;

  --mono: 'JetBrains Mono', 'Fira Mono', monospace;
  --sans: 'Inter', system-ui, sans-serif;

  --radius-sm:   6px;
  --radius:      12px;
  --radius-lg:   18px;
  --shadow:      0 4px 24px rgba(0,0,0,.5);
  --transition:  .18s ease;
}

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

html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  background: var(--bg-0);
  color: var(--text-1);
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

/* ── Layout ─────────────────────────────────── */
.wrap {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ── Header ─────────────────────────────────── */
.site-header {
  border-bottom: 1px solid var(--border);
  padding: 18px 0;
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11,14,19,.92);
  backdrop-filter: blur(12px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text-1);
  text-decoration: none;
  letter-spacing: -.02em;
}

.logo-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--green), #00b4d8);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .9rem;
}

.header-tag {
  font-size: .7rem;
  font-family: var(--mono);
  color: var(--text-3);
  background: var(--bg-2);
  border: 1px solid var(--border);
  padding: 3px 9px;
  border-radius: 20px;
  letter-spacing: .04em;
}

/* ── Hero ───────────────────────────────────── */
.hero {
  padding: 64px 0 40px;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: .1em;
  color: var(--green);
  background: var(--green-bg);
  border: 1px solid var(--green-dim);
  padding: 5px 14px;
  border-radius: 20px;
  margin-bottom: 20px;
  text-transform: uppercase;
}

.hero-badge .pulse-dot {
  width: 7px; height: 7px;
  background: var(--green);
  border-radius: 50%;
  animation: pulse-ring 1.8s ease-in-out infinite;
}

@keyframes pulse-ring {
  0%, 100% { box-shadow: 0 0 0 0 rgba(0,229,160,.6); }
  50%       { box-shadow: 0 0 0 5px rgba(0,229,160,0); }
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 700;
  letter-spacing: -.04em;
  line-height: 1.1;
  margin-bottom: 16px;
  background: linear-gradient(135deg, var(--text-1) 40%, var(--text-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.05rem;
  color: var(--text-2);
  max-width: 520px;
  margin: 0 auto 36px;
}

/* ── Check Form ─────────────────────────────── */
.check-form-card {
  background: var(--bg-1);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow);
  margin-bottom: 40px;
}

.check-form-row {
  display: flex;
  gap: 12px;
  align-items: stretch;
}

.check-input-wrap {
  flex: 1;
  position: relative;
}

.check-input-wrap .input-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-3);
  font-size: 1rem;
  pointer-events: none;
}

#url-input {
  width: 100%;
  background: var(--bg-3);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-1);
  font-family: var(--mono);
  font-size: .92rem;
  padding: 14px 16px 14px 44px;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}

#url-input::placeholder { color: var(--text-3); }

#url-input:focus {
  border-color: var(--green-dim);
  box-shadow: 0 0 0 3px rgba(0,229,160,.12);
}

.btn-check {
  background: linear-gradient(135deg, var(--green), #00c48c);
  color: #000;
  font-weight: 700;
  font-size: .92rem;
  letter-spacing: .02em;
  border: none;
  border-radius: var(--radius);
  padding: 14px 28px;
  cursor: pointer;
  white-space: nowrap;
  transition: opacity var(--transition), transform var(--transition);
  display: flex;
  align-items: center;
  gap: 8px;
}

.btn-check:hover:not(:disabled) { opacity: .88; transform: translateY(-1px); }
.btn-check:disabled { opacity: .5; cursor: not-allowed; transform: none; }

.form-hint {
  font-size: .78rem;
  color: var(--text-3);
  margin-top: 10px;
  font-family: var(--mono);
}

.form-hint span { color: var(--text-2); }

/* ── Result Card ────────────────────────────── */
#result-area { margin-bottom: 40px; }

.result-card {
  background: var(--bg-1);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  animation: slide-in .25s ease;
}

@keyframes slide-in {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

.result-card.up   { border-top: 3px solid var(--green); }
.result-card.down { border-top: 3px solid var(--red); }

.result-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
  gap: 12px;
}

.result-status {
  display: flex;
  align-items: center;
  gap: 12px;
}

.status-badge {
  font-family: var(--mono);
  font-size: .82rem;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: 20px;
  letter-spacing: .06em;
  text-transform: uppercase;
}

.status-badge.up   { background: var(--green-bg); color: var(--green); border: 1px solid var(--green-dim); }
.status-badge.down { background: var(--red-bg);   color: var(--red);   border: 1px solid var(--red-dim); }

.result-url {
  font-family: var(--mono);
  font-size: .85rem;
  color: var(--text-2);
  word-break: break-all;
}

.result-url strong { color: var(--text-1); }

.result-meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 0;
}

.meta-item {
  padding: 18px 24px;
  border-right: 1px solid var(--border);
}

.meta-item:last-child { border-right: none; }

.meta-label {
  font-size: .68rem;
  font-family: var(--mono);
  letter-spacing: .1em;
  color: var(--text-3);
  text-transform: uppercase;
  margin-bottom: 5px;
}

.meta-value {
  font-size: 1.3rem;
  font-weight: 600;
  font-family: var(--mono);
  color: var(--text-1);
}

.meta-value.green { color: var(--green); }
.meta-value.red   { color: var(--red); }
.meta-value.small { font-size: .95rem; }

.result-actions {
  padding: 16px 24px;
  border-top: 1px solid var(--border);
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.btn-sm {
  font-size: .8rem;
  font-family: var(--mono);
  padding: 7px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg-3);
  color: var(--text-2);
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
  display: flex;
  align-items: center;
  gap: 6px;
}

.btn-sm:hover { background: var(--bg-2); color: var(--text-1); border-color: var(--border-hi); }
.btn-sm.active { background: var(--blue); color: #fff; border-color: var(--blue); }

/* ── History Panel ──────────────────────────── */
.history-panel {
  background: var(--bg-1);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 40px;
  animation: slide-in .3s ease;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  border-bottom: 1px solid var(--border);
}

.panel-title {
  font-size: .8rem;
  font-family: var(--mono);
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--text-2);
}

.panel-close {
  background: none;
  border: none;
  color: var(--text-3);
  cursor: pointer;
  font-size: 1.1rem;
  line-height: 1;
  padding: 2px 6px;
  border-radius: 4px;
  transition: color var(--transition);
}
.panel-close:hover { color: var(--text-1); }

/* Stats row */
.stats-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  border-bottom: 1px solid var(--border);
}

.stat-block {
  padding: 16px 24px;
  border-right: 1px solid var(--border);
}
.stat-block:last-child { border-right: none; }

.stat-num {
  font-family: var(--mono);
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--text-1);
  line-height: 1.2;
}

.stat-num.green { color: var(--green); }
.stat-lbl { font-size: .68rem; color: var(--text-3); letter-spacing: .06em; font-family: var(--mono); text-transform: uppercase; }

/* History table */
.history-scroll { overflow-x: auto; }

.history-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .82rem;
  font-family: var(--mono);
}

.history-table th {
  padding: 10px 16px;
  text-align: left;
  font-size: .68rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--text-3);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

.history-table td {
  padding: 9px 16px;
  border-bottom: 1px solid rgba(38,49,71,.5);
  color: var(--text-2);
  white-space: nowrap;
}

.history-table tbody tr:last-child td { border-bottom: none; }

.history-table tbody tr:hover td { background: var(--bg-2); color: var(--text-1); }

.dot-up, .dot-down {
  display: inline-block;
  width: 8px; height: 8px;
  border-radius: 50%;
  margin-right: 6px;
}
.dot-up   { background: var(--green); box-shadow: 0 0 5px var(--green); }
.dot-down { background: var(--red);   box-shadow: 0 0 5px var(--red); }

.code-up   { color: var(--green); }
.code-down { color: var(--red); }

/* ── Recent Checks ──────────────────────────── */
.recent-section { margin-bottom: 60px; }

.section-heading {
  font-size: .72rem;
  font-family: var(--mono);
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.section-heading::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

.checks-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 12px;
}

.check-card {
  background: var(--bg-1);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition), transform var(--transition);
  position: relative;
  overflow: hidden;
}

.check-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--border);
  transition: background var(--transition);
}

.check-card.up::before   { background: var(--green); }
.check-card.down::before { background: var(--red); }

.check-card:hover {
  border-color: var(--border-hi);
  background: var(--bg-2);
  transform: translateY(-2px);
}

.check-card-domain {
  font-family: var(--mono);
  font-size: .9rem;
  font-weight: 600;
  color: var(--text-1);
  margin-bottom: 4px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.check-card-url {
  font-size: .72rem;
  color: var(--text-3);
  font-family: var(--mono);
  margin-bottom: 12px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.check-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: .75rem;
  font-family: var(--mono);
}

.check-card-status {
  display: flex;
  align-items: center;
  gap: 5px;
  font-weight: 600;
}

.check-card-status.up   { color: var(--green); }
.check-card-status.down { color: var(--red); }
.check-card-status.unknown { color: var(--text-3); }

.check-card-time { color: var(--text-3); font-size: .7rem; }

/* ── Spinner / Loading ──────────────────────── */
.spinner-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
  gap: 12px;
  color: var(--text-3);
  font-family: var(--mono);
  font-size: .85rem;
}

.spinner {
  width: 22px; height: 22px;
  border: 2px solid var(--border);
  border-top-color: var(--green);
  border-radius: 50%;
  animation: spin .7s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ── Error message ──────────────────────────── */
.error-banner {
  background: var(--red-bg);
  border: 1px solid var(--red-dim);
  color: var(--red);
  border-radius: var(--radius);
  padding: 14px 18px;
  font-size: .88rem;
  font-family: var(--mono);
  animation: slide-in .2s ease;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

/* ── Footer ─────────────────────────────────── */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 28px 0;
  text-align: center;
  font-size: .78rem;
  color: var(--text-3);
  font-family: var(--mono);
}

.site-footer a { color: var(--text-3); }
.site-footer a:hover { color: var(--text-1); text-decoration: none; }

/* ── Responsive ─────────────────────────────── */
@media (max-width: 600px) {
  .check-form-row { flex-direction: column; }
  .hero { padding: 40px 0 28px; }
  .result-meta { grid-template-columns: 1fr 1fr; }
  .meta-item:nth-child(2n) { border-right: none; }
  .meta-item:nth-child(odd):last-child { border-right: none; }
  .stats-row { grid-template-columns: 1fr 1fr; }
}

/* ── Uptime bar (sparkline) ─────────────────── */
.uptime-bar {
  display: flex;
  gap: 2px;
  padding: 16px 24px;
  border-bottom: 1px solid var(--border);
  align-items: flex-end;
  height: 60px;
}

.uptime-seg {
  flex: 1;
  border-radius: 2px;
  min-height: 6px;
  max-height: 36px;
  transition: opacity .15s;
  cursor: default;
}

.uptime-seg:hover { opacity: .75; }
.uptime-seg.up     { background: var(--green); }
.uptime-seg.down   { background: var(--red); }
.uptime-seg.empty  { background: var(--bg-3); }

/* ── Toast notification ─────────────────────── */
#toast {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: var(--bg-2);
  border: 1px solid var(--border-hi);
  border-radius: var(--radius);
  padding: 12px 22px;
  font-size: .84rem;
  font-family: var(--mono);
  color: var(--text-1);
  box-shadow: var(--shadow);
  z-index: 999;
  transition: transform .25s ease, opacity .25s ease;
  opacity: 0;
  white-space: nowrap;
}

#toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* ── Code label chips ───────────────────────── */
.chip {
  display: inline-block;
  font-family: var(--mono);
  font-size: .72rem;
  padding: 2px 8px;
  border-radius: 4px;
  background: var(--bg-3);
  color: var(--text-2);
  border: 1px solid var(--border);
}