:root{
  --theme-hue: 215;
  --app-bg: hsl(var(--theme-hue), 53%, 11%);
  --app-text: hsl(var(--theme-hue), 48%, 93%);
  --muted-text: hsl(var(--theme-hue), 20%, 49%);
  --panel-bg: hsl(var(--theme-hue), 45%, 13%);
  --panel-border: hsl(var(--theme-hue), 39%, 20%);
  --panel-shadow: 0 10px 26px rgba(0,0,0,0.32);
  --input-bg: hsl(var(--theme-hue), 46%, 12%);
  --input-border: hsl(var(--theme-hue), 40%, 23%);
  --table-head-bg: hsl(var(--theme-hue), 43%, 7%);
  --heading-text: hsl(var(--theme-hue), 78%, 86%);
  --accent-color: hsl(var(--theme-hue), 85%, 68%);
  --accent-soft-bg: hsla(var(--theme-hue), 85%, 68%, 0.1);
  --msg-online-color: #00DD00;
  --msg-offline-color: #9ca3af;
  --msg-position-bg: hsl(var(--theme-hue), 46%, 19%);
  --msg-modem-bg: #1a3d2e;
  --msg-terminal-bg: hsl(var(--theme-hue), 46%, 19%);
  --table-row-odd: rgba(0, 0, 0, 0.14);
  --table-row-even: rgba(0, 0, 0, 0.35);
}

body{
  margin: 0;
  padding: 14px;
  font-family: 'Segoe UI', Arial, sans-serif;
  font-size: 24px;
  color: var(--app-text);
  background-color: var(--app-bg) !important;
}

table, td, th {
  border: 1px solid var(--panel-border);
  text-align: left;
  font-size:13px;
}

table {
  border-collapse: collapse;
  width: 100%;
  background: var(--panel-bg);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: var(--panel-shadow);
}

th, td {
  padding-left: 10px;
  padding-right: 10px;
  padding-top: 5px;
  padding-bottom: 5px;
  white-space:nowrap;
}

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

a:hover {
  text-decoration: underline;
}
  
button {
    background-color: transparent;
    background-repeat: no-repeat;
    border: none;
    cursor: pointer;
    overflow: hidden;
    outline: none;
    color: inherit;
    font-size: 16px;
}

button:hover {
    background-color: var(--accent-soft-bg);
}

.btn-activate,
.btn-suspend,
.btn-deactivate {
    border-radius: 4px;
    padding: 6px 8px;
    font-weight: 600;
    text-transform: none;
    transition: transform 0.2s ease;
}

.btn-activate {
    background-color: #0f4d1a;
    color: #f4f7ff;
}

.btn-suspend {
    background-color: #8a6f02;
    color: #f4f7ff;
}

.btn-deactivate {
    background-color: #4f171b;
    color: #f4f7ff;
}

form { 
    margin: 0 auto; 
}

input[type='text'], textarea, select, input[type='number'], input[type='time']{
    color : var(--app-text);
    background-color : var(--input-bg);
    border: 1px solid var(--input-border);
    box-shadow: none;
}

.btn-disabled {
    color: var(--muted-text) !important;
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

.page-container {
    max-width: 1400px;
    margin: 0 auto;
}

.card {
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: 10px;
    padding: 12px 14px;
    box-shadow: var(--panel-shadow);
    margin-top: 10px;
}

.header-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
}

.header-card table {
    width: 100%;
}

.msg-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 8px;
}

.msg-table th,
.msg-table td {
    padding: 8px 10px;
}

.msg-table th {
    text-align: left;
    border-bottom: 1px solid var(--input-border);
    color: var(--heading-text);
    font-weight: 600;
}

.msg-table tr:nth-child(even) {
    background: var(--table-row-even);
}

.msg-table tr:nth-child(odd) {
    background: var(--table-row-odd);
}

.pagination {
    margin: 12px 0;
    text-align: center;
    font-size: 15px;
}

h3 {
    color: var(--heading-text);
    margin: 20px 0 15px 0;
    font-weight: 600;
}

table th {
    background: var(--table-head-bg);
    border-bottom: 1px solid var(--input-border) !important;
    color: var(--heading-text) !important;
}

table td {
    border-color: var(--input-border) !important;
    color: var(--app-text);
}

table tr:nth-child(even) {
    background: var(--table-row-even);
}
table tr:nth-child(odd) {
    background: var(--table-row-odd);
}