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

/* ─── Design Tokens: Origami Geométrico ──────────────────────────────────── */
:root {
  --paper-white:   #FAFAFA;
  --fold-shadow:   #B0B0B0;
  --ink-black:     #1A1A1A;
  --accent-coral:  #FF6B6B;
  --sky-fold:      #87CEEB;
  --sage-paper:    #A8D5BA;
  --warm-crease:   #F0C987;
  --steel-grey:    #4A4A4A;
  --surface:       #F4F4F4;
  --border:        #D8D8D8;
  --font-main:     'Poppins', sans-serif;
  --font-mono:     'JetBrains Mono', monospace;
  --fold-perspective: 800px;
  --radius:        0px;
  --transition:    200ms ease;
  --shadow-fold:   4px 4px 0 var(--fold-shadow), -2px -2px 0 rgba(255,255,255,0.8);
  --shadow-lift:   6px 6px 0 var(--fold-shadow);
}

/* ─── Reset ──────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
  font-family: var(--font-main);
  background: var(--paper-white);
  color: var(--ink-black);
  line-height: 1.6;
  min-height: 100dvh;
  background-image: linear-gradient(135deg, var(--paper-white) 25%, #F0F0F0 25%, #F0F0F0 50%, var(--paper-white) 50%, var(--paper-white) 75%, #F0F0F0 75%);
  background-size: 20px 20px;
}

/* ─── Typography ─────────────────────────────────────────────────────────── */
h1 { font-size: clamp(1.8rem, 4vw, 2.5rem); font-weight: 700; letter-spacing: -0.03em; }
h2 { font-size: 1.5rem; font-weight: 700; letter-spacing: -0.02em; }
h3 { font-size: 1.1rem; font-weight: 600; }
p  { max-width: 72ch; }
a  { color: var(--accent-coral); text-decoration: none; }
a:hover { text-decoration: underline; }
code { font-family: var(--font-mono); font-size: 0.875em; background: #eee; padding: 1px 5px; }

/* ─── Layout ─────────────────────────────────────────────────────────────── */
.container { max-width: 1280px; margin: 0 auto; padding: 0 1.5rem; }
.page-wrap { display: flex; min-height: 100dvh; }

/* ─── Sidebar Nav ────────────────────────────────────────────────────────── */
.sidebar {
  width: 230px;
  flex-shrink: 0;
  background: var(--ink-black);
  color: var(--paper-white);
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100dvh;
  z-index: 100;
  clip-path: polygon(0 0, 100% 0, 95% 100%, 0 100%);
}
.sidebar-logo {
  padding: 2rem 1.5rem 1.5rem;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.sidebar-logo .brand {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--paper-white);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.sidebar-logo .brand svg { color: var(--accent-coral); }
.sidebar-logo .domain {
  font-size: 0.7rem;
  color: var(--fold-shadow);
  font-family: var(--font-mono);
  margin-top: 2px;
}
.sidebar nav { flex: 1; padding: 1rem 0; }
.nav-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1.5rem;
  color: var(--fold-shadow);
  font-size: 0.875rem;
  font-weight: 500;
  transition: color var(--transition), background var(--transition);
  cursor: pointer;
  border-left: 3px solid transparent;
  text-decoration: none;
}
.nav-link:hover { color: var(--paper-white); background: rgba(255,255,255,0.06); text-decoration: none; }
.nav-link.active {
  color: var(--accent-coral);
  border-left-color: var(--accent-coral);
  background: rgba(255,107,107,0.08);
}
.sidebar-footer {
  padding: 1.25rem 1.5rem;
  border-top: 1px solid rgba(255,255,255,0.1);
}
.logout-btn {
  width: 100%;
  background: none;
  border: 1.5px solid rgba(255,255,255,0.2);
  color: var(--fold-shadow);
  font-family: var(--font-main);
  font-size: 0.8rem;
  font-weight: 500;
  padding: 0.5rem 1rem;
  cursor: pointer;
  transition: all var(--transition);
  text-align: left;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.logout-btn:hover { border-color: var(--accent-coral); color: var(--accent-coral); }

/* ─── Main Content ───────────────────────────────────────────────────────── */
.main-content { flex: 1; overflow-x: hidden; }

/* ─── Page Header ────────────────────────────────────────────────────────── */
.page-header {
  background: var(--ink-black);
  color: var(--paper-white);
  padding: 2rem 2.5rem 3.5rem;
  clip-path: polygon(0 0, 100% 0, 100% 80%, 0 100%);
  margin-bottom: -1.5rem;
  position: relative;
}
.page-header h1 { color: var(--paper-white); }
.page-header p  { color: var(--fold-shadow); font-size: 0.9rem; max-width: none; }
.header-actions { margin-top: 1.25rem; display: flex; gap: 0.75rem; align-items: center; flex-wrap: wrap; }

/* ─── Buttons ────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-main);
  font-size: 0.875rem;
  font-weight: 600;
  padding: 0.6rem 1.25rem;
  border: none;
  cursor: pointer;
  transition: box-shadow var(--transition), transform var(--transition), background var(--transition);
  text-decoration: none;
  white-space: nowrap;
}
.btn:hover { text-decoration: none; }
.btn-primary {
  background: var(--accent-coral);
  color: #fff;
  box-shadow: 3px 3px 0 #c94f4f;
}
.btn-primary:hover { box-shadow: var(--shadow-lift); transform: translate(-1px, -1px); }
.btn-primary:active { transform: translate(1px, 1px); box-shadow: 1px 1px 0 #c94f4f; }
.btn-ghost {
  background: transparent;
  color: var(--ink-black);
  border: 1.5px solid var(--fold-shadow);
}
.btn-ghost:hover { border-color: var(--ink-black); background: rgba(0,0,0,0.04); }
.btn-ghost-white {
  background: transparent;
  color: var(--paper-white);
  border: 1.5px solid rgba(255,255,255,0.3);
}
.btn-ghost-white:hover { border-color: #fff; }
.btn-danger { background: #c0392b; color: #fff; box-shadow: 3px 3px 0 #8e1a0f; }
.btn-danger:hover { box-shadow: var(--shadow-lift); transform: translate(-1px, -1px); }
.btn-sm { font-size: 0.78rem; padding: 0.4rem 0.85rem; }
.btn-qr-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: none;
  border: 1.5px solid var(--border);
  color: var(--steel-grey);
  cursor: pointer;
  transition: border-color var(--transition), color var(--transition), box-shadow var(--transition), transform var(--transition);
}
.btn-qr-icon:hover {
  border-color: var(--ink-black);
  color: var(--ink-black);
  box-shadow: 2px 2px 0 var(--fold-shadow);
  transform: translate(-1px, -1px);
}

/* ─── Cards ──────────────────────────────────────────────────────────────── */
.card {
  background: #fff;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-fold);
  padding: 1.5rem;
  transition: box-shadow var(--transition), transform var(--transition);
}
.card:hover { box-shadow: var(--shadow-lift); transform: translate(-1px, -1px); }
.card-plain { background: #fff; border: 1px solid var(--border); padding: 1.5rem; }

/* ─── Stat Cards ─────────────────────────────────────────────────────────── */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 1rem; padding: 2rem 2.5rem 0; }
.stat-card {
  background: #fff;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-fold);
  padding: 1.25rem 1.5rem;
  transition: transform var(--transition), box-shadow var(--transition);
  cursor: default;
}
.stat-card:hover { transform: translate(-2px, -2px); box-shadow: var(--shadow-lift); }
.stat-label { font-size: 0.75rem; font-weight: 500; color: var(--steel-grey); letter-spacing: 0.05em; text-transform: uppercase; }
.stat-value { font-size: 2rem; font-weight: 700; color: var(--ink-black); font-family: var(--font-mono); line-height: 1.1; margin: 0.25rem 0; }
.stat-sub { font-size: 0.75rem; color: var(--fold-shadow); }
.stat-card.accent .stat-value { color: var(--accent-coral); }

/* ─── Tables ─────────────────────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.875rem; }
thead th {
  background: var(--ink-black);
  color: var(--paper-white);
  padding: 0.75rem 1rem;
  text-align: left;
  font-weight: 600;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  white-space: nowrap;
}
tbody tr { border-bottom: 1px solid var(--border); transition: background var(--transition); }
tbody tr:hover { background: #F6F6F6; cursor: pointer; }
tbody td { padding: 0.85rem 1rem; color: var(--ink-black); vertical-align: middle; }
.td-mono { font-family: var(--font-mono); font-size: 0.82rem; color: var(--accent-coral); }
.td-muted { color: var(--steel-grey); font-size: 0.8rem; }

/* ─── Badges ─────────────────────────────────────────────────────────────── */
.badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  padding: 2px 8px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.badge-active   { background: #d4edda; color: #155724; border: 1px solid #c3e6cb; }
.badge-paused   { background: #fff3cd; color: #856404; border: 1px solid #ffeeba; }
.badge-expired  { background: #f8d7da; color: #721c24; border: 1px solid #f5c6cb; }

/* ─── Forms ──────────────────────────────────────────────────────────────── */
.form-group { margin-bottom: 1.25rem; }
.form-label { display: block; font-size: 0.8rem; font-weight: 600; color: var(--steel-grey); text-transform: uppercase; letter-spacing: 0.04em; margin-bottom: 0.4rem; }
.form-input {
  width: 100%;
  padding: 0.65rem 0.9rem;
  border: 1.5px solid var(--border);
  background: #fff;
  font-family: var(--font-main);
  font-size: 0.9rem;
  color: var(--ink-black);
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
  border-radius: var(--radius);
}
.form-input:focus { border-color: var(--ink-black); box-shadow: 3px 3px 0 var(--fold-shadow); }
.form-input-mono { font-family: var(--font-mono); }
select.form-input { cursor: pointer; }
.form-hint { font-size: 0.75rem; color: var(--steel-grey); margin-top: 0.3rem; }
.form-error { font-size: 0.8rem; color: #c0392b; margin-top: 0.3rem; }

/* ─── Alerts ─────────────────────────────────────────────────────────────── */
.alert { padding: 0.85rem 1.25rem; font-size: 0.875rem; border-left: 4px solid; margin-bottom: 1rem; }
.alert-success { background: #d4edda; color: #155724; border-color: var(--sage-paper); }
.alert-error   { background: #f8d7da; color: #721c24; border-color: var(--accent-coral); }
.alert-info    { background: #d1ecf1; color: #0c5460; border-color: var(--sky-fold); }

/* ─── Charts ─────────────────────────────────────────────────────────────── */
.charts-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); gap: 1.25rem; padding: 1.5rem 2.5rem; }
.chart-card { background: #fff; border: 1px solid var(--border); box-shadow: var(--shadow-fold); padding: 1.25rem; }
.chart-card h3 { font-size: 0.8rem; font-weight: 600; color: var(--steel-grey); text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 1rem; }
.chart-canvas-wrap { position: relative; height: 200px; }

/* ─── Live Feed ──────────────────────────────────────────────────────────── */
.live-feed { padding: 0 2.5rem 2rem; }
.live-feed-header { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 1rem; }
.live-dot { width: 8px; height: 8px; background: var(--accent-coral); display: inline-block; animation: pulse 1.5s ease-in-out infinite; }
@keyframes pulse { 0%,100% { opacity: 1; transform: scale(1); } 50% { opacity: 0.4; transform: scale(0.7); } }
.feed-list { display: flex; flex-direction: column; gap: 0.4rem; max-height: 280px; overflow-y: auto; }
.feed-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem 0.75rem;
  background: #fff;
  border: 1px solid var(--border);
  font-size: 0.8rem;
  animation: slideIn 0.3s ease-out;
}
@keyframes slideIn { from { opacity:0; transform:translateY(-8px); } to { opacity:1; transform:translateY(0); } }
.feed-slug { font-family: var(--font-mono); color: var(--accent-coral); font-weight: 500; min-width: 80px; }
.feed-country { color: var(--steel-grey); }
.feed-device { color: var(--fold-shadow); font-size: 0.75rem; margin-left: auto; }
.feed-time { color: var(--fold-shadow); font-size: 0.72rem; font-family: var(--font-mono); }

/* ─── Section padding ────────────────────────────────────────────────────── */
.section { padding: 1.5rem 2.5rem; }
.section-title { font-size: 0.75rem; font-weight: 600; color: var(--steel-grey); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 1rem; border-bottom: 2px solid var(--ink-black); padding-bottom: 0.5rem; display: inline-block; }

/* ─── Login Page ─────────────────────────────────────────────────────────── */
.login-wrap { display: grid; grid-template-columns: 1fr 1fr; min-height: 100dvh; }
.login-left {
  background: var(--ink-black);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 3rem;
  position: relative;
  overflow: hidden;
  clip-path: polygon(0 0, 90% 0, 100% 100%, 0 100%);
}
.login-left svg.tess { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0.06; }
.login-brand { position: relative; z-index: 1; text-align: center; }
.login-brand h1 { color: var(--paper-white); font-size: 2.5rem; }
.login-brand p { color: var(--fold-shadow); font-family: var(--font-mono); font-size: 0.85rem; margin-top: 0.5rem; }
.login-tagline { position: relative; z-index: 1; margin-top: 3rem; text-align: center; }
.login-tagline p { color: var(--fold-shadow); font-size: 0.9rem; max-width: 28ch; margin: 0 auto; }
.login-right { display: flex; flex-direction: column; justify-content: center; padding: 4rem 3rem; background: var(--paper-white); }
.login-form-wrap { max-width: 360px; width: 100%; }
.login-form-wrap h2 { margin-bottom: 0.5rem; }
.login-form-wrap p.sub { color: var(--steel-grey); font-size: 0.875rem; margin-bottom: 2rem; }
.otp-display { font-family: var(--font-mono); font-size: 0.8rem; color: var(--fold-shadow); margin-bottom: 1.5rem; padding: 0.75rem 1rem; border: 1px solid var(--border); background: var(--surface); }
.otp-display strong { color: var(--ink-black); }

/* ─── QR Panel ───────────────────────────────────────────────────────────── */
.qr-panel { text-align: center; }
.qr-panel canvas, .qr-panel img { border: 4px solid var(--ink-black); display: block; margin: 0 auto 1rem; }

/* ─── Geo Table ──────────────────────────────────────────────────────────── */
.geo-row { display: flex; align-items: center; gap: 0.75rem; padding: 0.5rem 0; border-bottom: 1px solid var(--border); font-size: 0.85rem; }
.geo-bar-wrap { flex: 1; background: var(--surface); height: 6px; }
.geo-bar { height: 6px; background: var(--accent-coral); transition: width 0.6s ease; }
.geo-count { font-family: var(--font-mono); font-size: 0.8rem; color: var(--steel-grey); min-width: 36px; text-align: right; }

/* ─── Granularity Tabs ───────────────────────────────────────────────────── */
.tab-group { display: flex; gap: 0; border: 1.5px solid var(--border); display: inline-flex; margin-bottom: 1rem; }
.tab-btn { padding: 0.4rem 0.9rem; font-size: 0.78rem; font-weight: 600; font-family: var(--font-main); background: none; border: none; border-right: 1px solid var(--border); cursor: pointer; color: var(--steel-grey); transition: background var(--transition), color var(--transition); }
.tab-btn:last-child { border-right: none; }
.tab-btn.active, .tab-btn:hover { background: var(--ink-black); color: var(--paper-white); }

/* ─── Responsive ─────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .sidebar { display: none; }
  .login-wrap { grid-template-columns: 1fr; }
  .login-left { display: none; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); padding: 1rem; }
  .charts-grid { grid-template-columns: 1fr; padding: 1rem; }
  .section { padding: 1rem; }
  .live-feed { padding: 0 1rem 1rem; }
  .page-header { padding: 1.5rem 1rem 3rem; }
  thead th, tbody td { padding: 0.6rem 0.75rem; }
}