* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    font-size: 15px;
    color: #1a1a1a;
    background: #f4f6f8;
}

.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(145deg, #2d6a4f 0%, #1b4332 100%);
}

.login-box {
    width: 100%;
    max-width: 360px;
    padding: 2rem;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.2);
}

.login-box h1 {
    margin: 0 0 0.25rem;
    font-size: 1.5rem;
}

.subtitle {
    margin: 0 0 1.5rem;
    color: #666;
}

label {
    display: block;
    margin-bottom: 1rem;
    font-weight: 500;
}

label input,
label select {
    display: block;
    width: 100%;
    margin-top: 0.35rem;
    padding: 0.5rem 0.65rem;
    border: 1px solid #ccc;
    border-radius: 6px;
    font-size: 1rem;
}

.left-panel {
    height: 100vh;
    display: flex;
    flex-direction: column;
    background: #1b4332;
    color: #fff;
    padding: 0.5rem;
}

.user-block {
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.user-name {
    font-weight: 600;
    font-size: 1.05rem;
}

.user-role {
    font-size: 0.85rem;
    opacity: 0.85;
    margin-top: 0.25rem;
}

.side-nav {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.left-footer {
    margin-top: auto;
}

.nav-btn {
    display: block;
    padding: 0.5rem 0.35rem;
    text-align: center;
    text-decoration: none;
    color: #fff;
    background: #40916c;
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.85rem;
    border: none;
    cursor: pointer;
}

.nav-btn:hover {
    background: #52b788;
}

.nav-btn-muted {
    background: rgba(255, 255, 255, 0.15);
}

.content-page {
    padding: 1.25rem 1.5rem;
}

h1 {
    margin-top: 0;
    font-size: 1.4rem;
}

h2 {
    font-size: 1.15rem;
    margin: 0 0 0.75rem;
}

h3 {
    font-size: 1rem;
    margin: 1rem 0 0.5rem;
}

.relay-zone {
    background: #fff;
    border: 1px solid #dde3ea;
    border-radius: 10px;
    padding: 1rem 1.25rem;
    margin-bottom: 1.25rem;
}

.relay-status {
    margin-bottom: 0.75rem;
}

.status-value {
    font-weight: 700;
    padding: 0.15rem 0.5rem;
    border-radius: 4px;
    background: #e9ecef;
}

.status-value.on {
    background: #d8f3dc;
    color: #1b4332;
}

.status-value.off {
    background: #f8d7da;
    color: #842029;
}

.relay-buttons {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.btn {
    display: inline-block;
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 6px;
    font-size: 0.95rem;
    cursor: pointer;
    text-decoration: none;
    color: #1a1a1a;
    background: #dee2e6;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    background: #2d6a4f;
    color: #fff;
    width: 100%;
}

.btn-on {
    background: #40916c;
    color: #fff;
}

.btn-off {
    background: #e76f51;
    color: #fff;
}

.btn-small {
    padding: 0.35rem 0.65rem;
    font-size: 0.85rem;
}

.btn-danger {
    background: #c1121f;
    color: #fff;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    background: #fff;
    margin-bottom: 0.75rem;
}

.data-table th,
.data-table td {
    border: 1px solid #dde3ea;
    padding: 0.45rem 0.6rem;
    text-align: left;
}

.data-table th {
    background: #f1f3f5;
}

.inline-form {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    align-items: center;
    margin-top: 0.5rem;
}

.inline-form input[type="datetime-local"],
.inline-form input[type="time"] {
    padding: 0.35rem;
    border: 1px solid #ccc;
    border-radius: 4px;
}

.schedule-hint {
    font-size: 0.88rem;
    color: #495057;
    margin: 0 0 0.75rem;
    line-height: 1.4;
}

.time-field {
    display: inline-flex;
    flex-direction: column;
    font-size: 0.85rem;
    font-weight: 500;
    margin: 0;
}

.time-field input {
    margin-top: 0.2rem;
}

.data-table input[type="time"] {
    width: 100%;
    min-width: 7.5rem;
    padding: 0.3rem;
    border: 1px solid #ccc;
    border-radius: 4px;
}

.data-table th.col-actions,
.data-table td.actions {
    width: 1%;
    max-width: 7.5rem;
    padding: 0.3rem 0.35rem;
    white-space: normal;
    vertical-align: middle;
}

.actions .btn-small {
    display: block;
    width: 100%;
    padding: 0.2rem 0.3rem;
    font-size: 0.75rem;
    margin: 0.15rem 0;
    text-align: center;
}

.actions form {
    display: inline;
}

.user-form {
    max-width: 420px;
    background: #fff;
    padding: 1rem;
    border-radius: 10px;
    border: 1px solid #dde3ea;
}

.alert {
    padding: 0.65rem 0.85rem;
    border-radius: 6px;
    margin-bottom: 1rem;
}

.alert-error {
    background: #f8d7da;
    color: #842029;
}

.alert-ok {
    background: #d1e7dd;
    color: #0f5132;
}

.toast {
    position: fixed;
    bottom: 1rem;
    right: 1rem;
    padding: 0.65rem 1rem;
    background: #212529;
    color: #fff;
    border-radius: 8px;
    max-width: 320px;
    z-index: 100;
}

.toast.error {
    background: #c1121f;
}