/* ===================================================
   IoT DASHBOARD — style.css
   Theme: White Clean, Curved Cards, Flat Solid Colors
   =================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');

/* ─── CSS Variables ──────────────────────────────── */
:root {
  /* Surfaces */
  --clr-bg:        #f4f6fb;
  --clr-surface:   #ffffff;
  --clr-border:    #e2e8f0;

  /* Focus */
  --clr-focus:     #6366f1;
  --clr-focus-ring: rgba(99, 102, 241, 0.16);

  /* Text */
  --clr-text-primary:   #1e293b;
  --clr-text-secondary: #64748b;
  --clr-text-muted:     #94a3b8;

  /* Column accent — FLAT solid only */
  --clr-col1: #6366f1;   /* Indigo  — Suhu */
  --clr-col1-bg: #eef2ff;

  --clr-col2: #0ea5e9;   /* Sky     — Kelembaban */
  --clr-col2-bg: #e0f2fe;

  --clr-col3: #10b981;   /* Emerald — Daya */
  --clr-col3-bg: #d1fae5;

  /* Status */
  --clr-ok:     #10b981;
  --clr-warn:   #f59e0b;
  --clr-danger: #ef4444;
  --clr-info:   #0ea5e9;

  /* Radius */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  /* Shadow */
  --shadow-sm: 0 1px 3px rgba(0,0,0,.06);
  --shadow-md: 0 4px 16px rgba(0,0,0,.08);

  /* Transition */
  --tr: 0.22s ease;
}

/* ─── Reset ──────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', sans-serif;
  font-size: 14px;
  line-height: 1.6;
  background: var(--clr-bg);
  color: var(--clr-text-primary);
  min-height: 100vh;
}

/* ─── Scrollbar ──────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--clr-border); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: #cbd5e1; }

/* ─── Wrapper ────────────────────────────────────── */
.dashboard-wrapper {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ════════════════════════════════════════
   TOP NAVIGATION
════════════════════════════════════════ */
.topnav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--clr-surface);
  border-bottom: 1px solid var(--clr-border);
  box-shadow: var(--shadow-sm);
  height: 60px;
  padding: 0 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

/* Title — text only, no logo/icon */
.topnav__brand {
  text-decoration: none;
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.topnav__title {
  font-size: 17px;
  font-weight: 800;
  color: var(--clr-text-primary);
  letter-spacing: -0.4px;
}

.topnav__title-sub {
  font-size: 13px;
  font-weight: 500;
  color: var(--clr-text-muted);
  letter-spacing: 0;
}

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

/* Search */
.nav-search { position: relative; display: flex; align-items: center; }

.nav-search__icon {
  position: absolute;
  left: 11px;
  color: var(--clr-text-muted);
  pointer-events: none;
  display: grid;
  place-items: center;
}

.nav-search__input {
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  color: var(--clr-text-primary);
  background: var(--clr-bg);
  border: 1.5px solid var(--clr-border);
  border-radius: 99px;
  padding: 7px 16px 7px 34px;
  width: 210px;
  outline: none;
  transition: border-color var(--tr), box-shadow var(--tr), width var(--tr);
}

.nav-search__input::placeholder { color: var(--clr-text-muted); }

.nav-search__input:focus {
  border-color: var(--clr-focus);
  box-shadow: 0 0 0 4px var(--clr-focus-ring);
  width: 270px;
}

/* Clock */
.nav-time {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  font-weight: 500;
  color: var(--clr-text-secondary);
  background: var(--clr-bg);
  border: 1px solid var(--clr-border);
  border-radius: 99px;
  padding: 5px 12px;
  letter-spacing: 0.5px;
}

/* Status dot */
.nav-status-dot {
  width: 10px;
  height: 10px;
  background: var(--clr-ok);
  border-radius: 50%;
  border: 2px solid #fff;
  outline: 2px solid var(--clr-ok);
  animation: pulse-dot 2.2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { outline-width: 2px; outline-offset: 0px; }
  50%       { outline-width: 2px; outline-offset: 2px; outline-color: rgba(16,185,129,.3); }
}

/* Nav icon buttons */
.nav-btn {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: none;
  border-radius: var(--radius-sm);
  background: var(--clr-bg);
  color: var(--clr-text-secondary);
  cursor: pointer;
  transition: background var(--tr), color var(--tr);
  position: relative;
}

.nav-btn:hover { background: var(--clr-col1-bg); color: var(--clr-col1); }

.nav-btn .badge {
  position: absolute;
  top: 4px; right: 4px;
  width: 7px; height: 7px;
  background: var(--clr-danger);
  border-radius: 50%;
  border: 2px solid var(--clr-surface);
}

/* ════════════════════════════════════════
   MAIN CONTENT
════════════════════════════════════════ */
.main-content {
  flex: 1;
  padding: 26px 32px 48px;
  max-width: 1440px;
  width: 100%;
  margin: 0 auto;
}

/* ─── Page Header ────────────────────────────────── */
.page-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 16px;
}

.page-header__label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--clr-text-muted);
  margin-bottom: 3px;
}

.page-header__title {
  font-size: 24px;
  font-weight: 800;
  color: var(--clr-text-primary);
  letter-spacing: -0.5px;
  line-height: 1.2;
}

.page-header__sub {
  font-size: 13px;
  color: var(--clr-text-secondary);
  margin-top: 4px;
}

/* Filter toolbar */
.filter-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.filter-select {
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  color: var(--clr-text-primary);
  background: var(--clr-surface);
  border: 1.5px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: 7px 32px 7px 12px;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  cursor: pointer;
  outline: none;
  transition: border-color var(--tr), box-shadow var(--tr);
}

.filter-select:focus {
  border-color: var(--clr-focus);
  box-shadow: 0 0 0 4px var(--clr-focus-ring);
}

/* Buttons — flat, no gradient */
.btn-primary {
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  font-weight: 600;
  color: #fff;
  background: var(--clr-col1);
  border: none;
  border-radius: var(--radius-md);
  padding: 8px 18px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: opacity var(--tr), transform var(--tr);
}

.btn-primary:hover { opacity: 0.88; transform: translateY(-1px); }
.btn-primary:active { transform: translateY(0); opacity: 1; }

/* ════════════════════════════════════════
   STAT CARDS
════════════════════════════════════════ */
.stat-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--tr), box-shadow var(--tr);
  animation: fade-up 0.35s ease both;
}

.stat-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }

.stat-card__icon {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  display: grid;
  place-items: center;
  margin-bottom: 14px;
}

.stat-card__icon svg { width: 19px; height: 19px; }

.stat-card--1 .stat-card__icon { background: var(--clr-col1-bg); color: var(--clr-col1); }
.stat-card--2 .stat-card__icon { background: var(--clr-col2-bg); color: var(--clr-col2); }
.stat-card--3 .stat-card__icon { background: var(--clr-col3-bg); color: var(--clr-col3); }
.stat-card--4 .stat-card__icon { background: #fef3c7; color: var(--clr-warn); }

.stat-card__label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  color: var(--clr-text-muted);
  margin-bottom: 4px;
}

.stat-card__value {
  font-family: 'JetBrains Mono', monospace;
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -1px;
  line-height: 1;
  color: var(--clr-text-primary);
}

.stat-card__unit {
  font-size: 13px;
  font-weight: 500;
  color: var(--clr-text-secondary);
  margin-left: 2px;
}

.stat-card__delta {
  margin-top: 10px;
  font-size: 12px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 4px;
}

.stat-card__delta.up   { color: var(--clr-ok); }
.stat-card__delta.down { color: var(--clr-danger); }
.stat-card__delta.neu  { color: var(--clr-text-muted); }

/* ════════════════════════════════════════
   3-COLUMN DATA GRID
════════════════════════════════════════ */
.data-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 24px;
}

/* ─── Column Card ────────────────────────────────── */
.col-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: box-shadow var(--tr), transform var(--tr);
  animation: fade-up 0.35s ease both;
}

.col-card:nth-child(1) { animation-delay: 0.05s; }
.col-card:nth-child(2) { animation-delay: 0.10s; }
.col-card:nth-child(3) { animation-delay: 0.15s; }

.col-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }

.col-card__header {
  padding: 20px 20px 0;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

/* Accent top bar */
.col-card__accent-line {
  height: 3px;
  width: 32px;
  border-radius: 99px;
  margin-bottom: 10px;
}

.col-card--1 .col-card__accent-line { background: var(--clr-col1); }
.col-card--2 .col-card__accent-line { background: var(--clr-col2); }
.col-card--3 .col-card__accent-line { background: var(--clr-col3); }

.col-card__title {
  font-size: 15px;
  font-weight: 700;
  color: var(--clr-text-primary);
  letter-spacing: -0.2px;
}

.col-card__subtitle {
  font-size: 12px;
  color: var(--clr-text-muted);
  margin-top: 2px;
}

/* Badge */
.card-badge {
  font-size: 11px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 99px;
  white-space: nowrap;
}

.card-badge--ok     { background: #d1fae5; color: #065f46; }
.card-badge--warn   { background: #fef3c7; color: #92400e; }
.card-badge--danger { background: #fee2e2; color: #991b1b; }
.card-badge--info   { background: var(--clr-col2-bg); color: #0c4a6e; }

/* Chart container */
.col-card__chart {
  padding: 14px 20px 8px;
  flex: 1;
}

/* ─── SVG Diagram — FLAT colors only ────────────── */
.diagram-svg {
  width: 100%;
  height: auto;
  display: block;
  overflow: visible;
}

.diagram-bar { transition: opacity var(--tr); }
.diagram-bar:hover { opacity: 0.75; cursor: pointer; }

/* ─── Gauge Number Display ───────────────────────── */
.gauge-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 18px 20px 0;
  gap: 2px;
}

.gauge-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 44px;
  font-weight: 800;
  letter-spacing: -2px;
  line-height: 1;
}

.gauge-num--1 { color: var(--clr-col1); }
.gauge-num--2 { color: var(--clr-col2); }
.gauge-num--3 { color: var(--clr-col3); }

.gauge-unit {
  font-size: 14px;
  font-weight: 500;
  color: var(--clr-text-secondary);
}

.gauge-label {
  font-size: 12px;
  color: var(--clr-text-muted);
  margin-top: 4px;
}

/* ─── Data Table ─────────────────────────────────── */
.col-card__table-wrap { padding: 0 20px 20px; }

.data-table {
  width: 100%;
  border-collapse: collapse;
}

.data-table th {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.7px;
  text-transform: uppercase;
  color: var(--clr-text-muted);
  padding: 8px 10px;
  text-align: left;
  border-bottom: 1px solid var(--clr-border);
}

.data-table td {
  padding: 9px 10px;
  font-size: 13px;
  color: var(--clr-text-primary);
  border-bottom: 1px solid var(--clr-bg);
}

.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: var(--clr-bg); }

/* Numeric cell */
.num-cell {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: -0.3px;
  text-align: right;
  color: var(--clr-text-primary);
}

.num-cell.hl-1 { color: var(--clr-col1); }
.num-cell.hl-2 { color: var(--clr-col2); }
.num-cell.hl-3 { color: var(--clr-col3); }
.num-cell.hl-warn   { color: var(--clr-warn); }
.num-cell.hl-danger { color: var(--clr-danger); }

/* Table status dot */
.tbl-dot {
  display: inline-block;
  width: 7px; height: 7px;
  border-radius: 50%;
  margin-right: 6px;
  vertical-align: middle;
}

.tbl-dot--ok     { background: var(--clr-ok); }
.tbl-dot--warn   { background: var(--clr-warn); }
.tbl-dot--danger { background: var(--clr-danger); }

/* ─── Metric List ────────────────────────────────── */
.metric-list {
  display: flex;
  flex-direction: column;
  padding: 0 20px 20px;
}

.metric-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid var(--clr-bg);
}

.metric-item:last-child { border-bottom: none; }

.metric-item__name {
  font-size: 13px;
  color: var(--clr-text-secondary);
}

.metric-item__val {
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px;
  font-weight: 600;
  color: var(--clr-text-primary);
  letter-spacing: -0.3px;
}

/* Mini progress bar */
.metric-bar-track {
  width: 80px;
  height: 5px;
  background: var(--clr-bg);
  border-radius: 99px;
  overflow: hidden;
}

.metric-bar-fill {
  height: 100%;
  border-radius: 99px;
  transition: width 1s ease;
}

.metric-bar-fill--1 { background: var(--clr-col1); }
.metric-bar-fill--2 { background: var(--clr-col2); }
.metric-bar-fill--3 { background: var(--clr-col3); }

/* ════════════════════════════════════════
   CONFIG PANELS (shared card style)
════════════════════════════════════════ */
.config-section {
  margin-bottom: 20px;
}

.config-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  animation: fade-up 0.35s ease both;
}

/* Card head strip with section color */
.config-card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  border-bottom: 1px solid var(--clr-border);
  gap: 12px;
}

.config-card__head-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.config-card__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.config-card--mqtt  .config-card__dot { background: var(--clr-col2); }
.config-card--db    .config-card__dot { background: var(--clr-col3); }
.config-card--sensor .config-card__dot { background: var(--clr-col1); }

.config-card__title {
  font-size: 14px;
  font-weight: 700;
  color: var(--clr-text-primary);
}

.config-card__desc {
  font-size: 12px;
  color: var(--clr-text-muted);
  margin-top: 1px;
}

/* Config status tag */
.cfg-tag {
  font-size: 11px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 99px;
}

.cfg-tag--connected    { background: #d1fae5; color: #065f46; }
.cfg-tag--disconnected { background: #fee2e2; color: #991b1b; }
.cfg-tag--idle         { background: #f1f5f9; color: #64748b; }

/* Config form body */
.config-card__body {
  padding: 22px 24px 24px;
}

/* Section divider inside form */
.form-divider {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  color: var(--clr-text-muted);
  padding-bottom: 10px;
  border-bottom: 1px solid var(--clr-border);
  margin: 20px 0 16px;
  grid-column: 1 / -1;
}

.form-divider:first-child { margin-top: 0; }

/* Grid layouts */
.config-form {
  display: grid;
  gap: 14px 20px;
}

.config-form--2col { grid-template-columns: 1fr 1fr; }
.config-form--3col { grid-template-columns: 1fr 1fr 1fr; }
.config-form--4col { grid-template-columns: 1fr 1fr 1fr 1fr; }

/* ─── Form Group ─────────────────────────────────── */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group--span2 { grid-column: span 2; }
.form-group--span3 { grid-column: span 3; }
.form-group--span4 { grid-column: 1 / -1; }

.form-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.7px;
  text-transform: uppercase;
  color: var(--clr-text-muted);
}

.form-hint {
  font-size: 11px;
  color: var(--clr-text-muted);
  margin-top: 2px;
}

/* ─── Inputs — Base ──────────────────────────────── */
.form-input,
.form-select,
.form-textarea {
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  color: var(--clr-text-primary);
  background: var(--clr-surface);
  border: 1.5px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  width: 100%;
  outline: none;
  transition: border-color var(--tr), box-shadow var(--tr);
}

.form-input::placeholder,
.form-textarea::placeholder { color: var(--clr-text-muted); }

/* ── Focus Effect ── */
.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--clr-focus);
  box-shadow: 0 0 0 4px var(--clr-focus-ring);
}

/* ── Hover (pre-focus) ── */
.form-input:hover:not(:focus),
.form-select:hover:not(:focus),
.form-textarea:hover:not(:focus) {
  border-color: #cbd5e1;
}

/* ── Numeric input style ── */
.form-input[type="number"] {
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: -0.5px;
  -moz-appearance: textfield;
  text-align: right;
}

.form-input[type="number"]::-webkit-inner-spin-button,
.form-input[type="number"]::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

/* Numeric wrapper with suffix */
.numeric-wrap { position: relative; }
.numeric-wrap .form-input { padding-right: 40px; }

.numeric-suffix {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 12px;
  font-weight: 600;
  color: var(--clr-text-muted);
  pointer-events: none;
  font-family: 'Inter', sans-serif;
}

/* Select */
.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
  cursor: pointer;
}

/* Textarea */
.form-textarea {
  resize: vertical;
  min-height: 76px;
}

/* Password / secret field */
.form-input--secret {
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: 1px;
}

/* Input with inline icon prefix */
.input-prefix-wrap { position: relative; }
.input-prefix-wrap .form-input { padding-left: 36px; }

.input-prefix-icon {
  position: absolute;
  left: 11px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--clr-text-muted);
  pointer-events: none;
  display: grid;
  place-items: center;
  width: 16px; height: 16px;
}

/* ─── Toggle Switch ──────────────────────────────── */
.toggle-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 2px 0;
}

.toggle {
  position: relative;
  width: 42px;
  height: 23px;
  flex-shrink: 0;
}

.toggle input { opacity: 0; width: 0; height: 0; }

.toggle-track {
  position: absolute;
  inset: 0;
  background: var(--clr-border);
  border-radius: 99px;
  cursor: pointer;
  transition: background var(--tr);
}

.toggle input:checked + .toggle-track { background: var(--clr-col1); }

.toggle-track::before {
  content: '';
  position: absolute;
  left: 3px; top: 3px;
  width: 17px; height: 17px;
  background: #fff;
  border-radius: 50%;
  box-shadow: var(--shadow-sm);
  transition: transform var(--tr);
}

.toggle input:checked + .toggle-track::before { transform: translateX(19px); }

.toggle input:focus-visible + .toggle-track {
  box-shadow: 0 0 0 4px var(--clr-focus-ring);
}

.toggle-label {
  font-size: 13px;
  color: var(--clr-text-secondary);
  cursor: pointer;
  user-select: none;
}

/* ─── Config Buttons ─────────────────────────────── */
.btn-row {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  flex-wrap: wrap;
  padding-top: 6px;
  grid-column: 1 / -1;
}

/* Flat primary — solid color, no gradient */
.btn-submit {
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  font-weight: 600;
  color: #fff;
  background: var(--clr-col1);
  border: none;
  border-radius: var(--radius-md);
  padding: 10px 22px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 7px;
  transition: opacity var(--tr), transform var(--tr);
}

.btn-submit:hover { opacity: 0.88; transform: translateY(-1px); }
.btn-submit:active { transform: translateY(0); }

.btn-submit--mqtt { background: var(--clr-col2); }
.btn-submit--db   { background: var(--clr-col3); }

/* Flat secondary */
.btn-secondary {
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  font-weight: 600;
  color: var(--clr-text-secondary);
  background: var(--clr-surface);
  border: 1.5px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: 10px 18px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 7px;
  transition: border-color var(--tr), color var(--tr), background var(--tr);
}

.btn-secondary:hover {
  border-color: var(--clr-col1);
  color: var(--clr-col1);
  background: var(--clr-col1-bg);
}

.btn-secondary:focus {
  outline: none;
  box-shadow: 0 0 0 4px var(--clr-focus-ring);
  border-color: var(--clr-focus);
}

/* Test-connection button variant */
.btn-test {
  font-family: 'Inter', sans-serif;
  font-size: 12px;
  font-weight: 600;
  color: var(--clr-col2);
  background: var(--clr-col2-bg);
  border: 1.5px solid var(--clr-col2);
  border-radius: var(--radius-md);
  padding: 7px 14px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: opacity var(--tr);
}

.btn-test:hover { opacity: 0.8; }

.btn-test--db {
  color: var(--clr-col3);
  background: var(--clr-col3-bg);
  border-color: var(--clr-col3);
}

/* ─── Connection Status Badge (live) ─────────────── */
.conn-status {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 12px;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: 99px;
  border: 1px solid;
}

.conn-status--ok {
  color: var(--clr-ok);
  border-color: #a7f3d0;
  background: #f0fdf9;
}

.conn-status--err {
  color: var(--clr-danger);
  border-color: #fca5a5;
  background: #fff5f5;
}

.conn-status__dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: currentColor;
}

/* ════════════════════════════════════════
   FOOTER
════════════════════════════════════════ */
footer {
  text-align: center;
  padding: 18px 32px;
  font-size: 12px;
  color: var(--clr-text-muted);
  border-top: 1px solid var(--clr-border);
  background: var(--clr-surface);
}

footer strong { color: var(--clr-col1); }

/* ─── Animations ─────────────────────────────────── */
@keyframes fade-up {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

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

.stat-card:nth-child(1) { animation-delay: 0.02s; }
.stat-card:nth-child(2) { animation-delay: 0.06s; }
.stat-card:nth-child(3) { animation-delay: 0.10s; }
.stat-card:nth-child(4) { animation-delay: 0.14s; }

/* ─── Responsive ─────────────────────────────────── */
@media (max-width: 1100px) {
  .data-grid { grid-template-columns: 1fr 1fr; }
  .col-card:nth-child(3) { grid-column: span 2; }
  .config-form--4col { grid-template-columns: 1fr 1fr; }
  .config-form--3col { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 720px) {
  .topnav { padding: 0 16px; }
  .main-content { padding: 18px 16px 36px; }
  .data-grid { grid-template-columns: 1fr; }
  .col-card:nth-child(3) { grid-column: span 1; }
  .stat-row { grid-template-columns: 1fr 1fr; }
  .config-form--2col,
  .config-form--3col,
  .config-form--4col { grid-template-columns: 1fr; }
  .form-group--span2,
  .form-group--span3,
  .form-group--span4 { grid-column: span 1; }
  .nav-search__input { width: 150px; }
  .nav-search__input:focus { width: 190px; }
  .nav-time { display: none; }
}

@media (max-width: 480px) {
  .stat-row { grid-template-columns: 1fr; }
  .page-header { flex-direction: column; }
  .topnav__title-sub { display: none; }
}