/* style.css - Modern, Responsive, Centralized CSS for all pages */

:root {
  --primary: #007bff;
  --primary-dark: #0056b3;
  --sidebar-bg: #222e3c;
  --sidebar-active: #007bff;
  --sidebar-hover: #0056b3;
  --sidebar-text: #fff;
  --main-bg: #f7f7f7;
  --container-bg: #fff;
  --border: #e0e0e0;
  --success: #e6ffe6;
  --success-text: #1a7f1a;
  --danger: #dc3545;
  --danger-hover: #b52a37;
  --shadow: 0 2px 12px #0001;
}

body {
  margin: 0;
  padding: 0;
  font-family: 'Segoe UI', Arial, sans-serif;
  background: var(--main-bg);
  min-height: 100vh;
}

.sidebar {
  width: 220px;
  background: var(--sidebar-bg);
  color: var(--sidebar-text);
  height: 100vh;
  position: fixed;
  left: 0; top: 0;
  display: flex;
  flex-direction: column;
  box-shadow: 2px 0 8px #0002;
  z-index: 10;
  transition: width 0.2s;
}
.sidebar h2 {
  margin: 0; padding: 24px 0 16px 0; text-align: center; font-size: 1.3em; letter-spacing: 1px; background: #1a2230;
}
.sidebar ul {
  list-style: none; padding: 0; margin: 0;
}
.sidebar li {
  margin: 0; padding: 0;
}
.sidebar a {
  display: block;
  color: var(--sidebar-text);
  text-decoration: none;
  padding: 14px 28px;
  transition: background 0.2s, color 0.2s;
  border-radius: 0 20px 20px 0;
}
.sidebar a.active, .sidebar a:hover {
  background: var(--sidebar-active);
  color: #fff;
}

.main {
  margin-left: 220px;
  padding: 40px 32px 32px 32px;
  min-height: 100vh;
  background: var(--main-bg);
  transition: margin-left 0.2s;
}

.container {
  max-width: 700px;
  background: var(--container-bg);
  margin: 40px auto;
  padding: 32px 32px 24px 32px;
  border-radius: 12px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

h2, h3 {
  margin-top: 0;
  font-weight: 600;
}

label {
  font-weight: 500;
  margin-bottom: 4px;
}

input[type="text"],
input[type="number"],
input[type="password"],
select {
  width: 100%;
  padding: 10px;
  margin: 6px 0 18px 0;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 1em;
  background: #fafbfc;
  transition: border 0.2s;
}
input:focus, select:focus {
  border-color: var(--primary);
  outline: none;
}

button {
  background: var(--primary);
  color: #fff;
  border: none;
  padding: 10px 24px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 1em;
  font-weight: 500;
  margin: 0 4px 0 0;
  transition: background 0.2s;
}
button:hover {
  background: var(--primary-dark);
}
button[style*="background:#dc3545"]:hover {
  background: var(--danger-hover) !important;
}

.logout-link {
  float: right;
  font-size: 0.95em;
  color: var(--danger);
  text-decoration: none;
  margin-left: 12px;
}
.logout-link:hover {
  text-decoration: underline;
}

.msg {
  margin: 12px 0;
  padding: 12px 16px;
  border-radius: 6px;
  background: var(--success);
  color: var(--success-text);
  font-size: 1.05em;
  box-shadow: 0 1px 4px #0001;
}

.checkbox-row {
  display: flex;
  align-items: center;
  margin-bottom: 18px;
  width: 100%;
  gap: 10px;
  justify-content: flex-start;
}
.checkbox-row input[type="checkbox"] {
  margin: 0;
  vertical-align: middle;
}
.checkbox-row label {
  font-weight: normal;
  margin: 0;
  padding: 0;
  vertical-align: middle;
  white-space: nowrap;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 24px;
  background: #fafafa;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 1px 6px #0001;
}
th, td {
  border: 1px solid var(--border);
  padding: 10px 12px;
  text-align: left;
  font-size: 1em;
}
th {
  background: #f0f0f0;
  font-weight: 600;
}
tr:nth-child(even) {
  background: #f9f9f9;
}

@media (max-width: 900px) {
  .container { max-width: 98vw; padding: 10px; }
  .main { padding: 16px 4vw; }
  .sidebar { width: 100vw; height: auto; position: static; flex-direction: row; }
  .sidebar ul { display: flex; }
  .sidebar a { padding: 12px 16px; font-size: 1em; border-radius: 0; }
  .main { margin-left: 0; }
}
@media (max-width: 600px) {
  .container { padding: 6vw 2vw; }
  .main { padding: 4vw 2vw; }
  th, td { font-size: 0.97em; padding: 7px 6px; }
}