:root {
    --melder-bg: #07100d;
    --melder-shell: #151a1f;
    --melder-shell-2: #202832;
    --melder-screen: #d6f6bb;
    --melder-screen-dark: #1d351a;
    --melder-text: #e8eef2;
    --melder-muted: #91a0aa;
    --melder-green: #49d17d;
    --melder-red: #f05a5a;
    --melder-amber: #ffb84d;
    --melder-blue: #4aa3ff;
    --melder-border: rgba(255, 255, 255, 0.12);
    --melder-shadow: 0 24px 70px rgba(0, 0, 0, 0.45);
}

* {
    box-sizing: border-box;
}

body {
    min-height: 100vh;
    margin: 0;
    font-family: "Segoe UI", Tahoma, sans-serif;
    color: var(--melder-text);
    background:
        radial-gradient(circle at 20% 0%, rgba(74, 163, 255, 0.16), transparent 34%),
        linear-gradient(135deg, #07100d 0%, #0d1720 48%, #101013 100%);
}

button,
input,
select {
    font: inherit;
}

.melder-container {
    width: min(1120px, calc(100vw - 32px));
    min-height: calc(100vh - 80px);
    margin: 28px auto 72px;
    display: grid;
    grid-template-columns: minmax(320px, 430px) minmax(280px, 1fr);
    gap: 22px;
    align-items: start;
}

.melder-device,
.history-panel,
.settings-dialog {
    border: 1px solid var(--melder-border);
    box-shadow: var(--melder-shadow);
}

.melder-device {
    position: relative;
    padding: 22px;
    border-radius: 26px;
    background: linear-gradient(160deg, var(--melder-shell), var(--melder-shell-2));
}

.melder-device.alarm-active {
    animation: alarmPulse 1s ease-in-out infinite;
}

@keyframes alarmPulse {
    0%, 100% { box-shadow: var(--melder-shadow), 0 0 0 rgba(240, 90, 90, 0); }
    50% { box-shadow: var(--melder-shadow), 0 0 34px rgba(240, 90, 90, 0.38); }
}

.melder-header,
.history-header,
.settings-header,
.settings-footer,
.connection-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.header-brand h1,
.history-header h2,
.settings-header h2 {
    margin: 0;
}

.header-brand h1 {
    font-size: 1.35rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.header-brand p {
    margin: 4px 0 0;
    color: var(--melder-muted);
    font-size: 0.86rem;
}

.header-status {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 1.2rem;
}

.signal-dot,
.connection-dot {
    width: 11px;
    height: 11px;
    border-radius: 999px;
    background: var(--melder-green);
    box-shadow: 0 0 12px var(--melder-green);
}

.signal-dot.offline,
.connection-dot.offline {
    background: var(--melder-red);
    box-shadow: 0 0 12px var(--melder-red);
}

.time-display {
    margin: 20px 0 12px;
    padding: 10px 14px;
    border-radius: 14px;
    background: rgba(0, 0, 0, 0.28);
    color: var(--melder-muted);
    text-align: right;
    font-family: Consolas, "Courier New", monospace;
}

.melder-screen {
    min-height: 315px;
    padding: 22px;
    border: 8px solid #0a0e12;
    border-radius: 18px;
    background:
        linear-gradient(rgba(29, 53, 26, 0.05), rgba(29, 53, 26, 0.05)),
        var(--melder-screen);
    color: #12240f;
    box-shadow: inset 0 0 28px rgba(0, 0, 0, 0.35);
    overflow: hidden;
}

.screen-view {
    display: none;
    height: 100%;
}

.screen-view.active {
    display: block;
}

.idle-icon,
.ack-icon {
    margin-top: 26px;
    text-align: center;
    font-size: 4rem;
}

.idle-text,
.ack-title {
    margin-top: 14px;
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: 0.09em;
    text-align: center;
}

.idle-subtext,
.idle-wache,
.ack-id,
.ack-time {
    margin-top: 8px;
    text-align: center;
    color: var(--melder-screen-dark);
}

.alarm-header {
    margin-bottom: 16px;
    padding: 9px 12px;
    border-radius: 8px;
    background: #ffe08a;
    color: #3b2600;
    font-weight: 900;
    text-align: center;
    letter-spacing: 0.08em;
}

.alarm-row,
.alarm-time,
.status-row {
    display: grid;
    grid-template-columns: 105px 1fr;
    gap: 8px;
    margin-bottom: 11px;
    align-items: start;
}

.alarm-label,
.status-label {
    font-weight: 800;
}

.alarm-value,
.alarm-desc {
    word-break: break-word;
}

.prio-badge {
    display: inline-block;
    margin-left: 8px;
    padding: 4px 8px;
    border-radius: 999px;
    background: #b01717;
    color: #fff;
    font-size: 0.78rem;
    vertical-align: middle;
}

.melder-controls {
    margin-top: 18px;
    display: grid;
    gap: 16px;
}

.control-group label {
    display: block;
    margin-bottom: 7px;
    color: var(--melder-muted);
}

.wache-select,
.settings-input {
    width: 100%;
    padding: 11px 12px;
    border: 1px solid var(--melder-border);
    border-radius: 10px;
    background: rgba(0, 0, 0, 0.28);
    color: var(--melder-text);
}

.button-group {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
}

.btn,
.btn-primary,
.btn-secondary,
.btn-tertiary,
.clear-btn,
.settings-btn,
.close-btn {
    border: 0;
    border-radius: 10px;
    cursor: pointer;
    color: #fff;
}

.btn {
    min-height: 58px;
    display: grid;
    place-items: center;
    background: #2c3742;
    border: 1px solid var(--melder-border);
}

.btn:disabled {
    cursor: not-allowed;
    opacity: 0.45;
}

.btn-icon {
    font-size: 1.15rem;
    font-weight: 800;
}

.btn-label {
    font-size: 0.73rem;
    color: var(--melder-muted);
}

.btn-ack:not(:disabled) {
    background: linear-gradient(180deg, #238f4d, #166b38);
}

.btn-reset {
    background: linear-gradient(180deg, #384653, #222b34);
}

.btn-mute {
    background: linear-gradient(180deg, #365273, #24394f);
}

.speaker-grill {
    margin: 22px auto 0;
    width: 150px;
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 8px;
}

.speaker-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.55);
}

.history-panel {
    min-height: 420px;
    border-radius: 18px;
    background: rgba(18, 24, 30, 0.82);
    overflow: hidden;
}

.history-header {
    padding: 18px;
    border-bottom: 1px solid var(--melder-border);
}

.history-header h2 {
    font-size: 1.1rem;
}

.clear-btn,
.settings-btn,
.close-btn {
    width: 38px;
    height: 38px;
    background: rgba(255, 255, 255, 0.08);
}

.history-list {
    padding: 14px;
    display: grid;
    gap: 10px;
    max-height: 630px;
    overflow: auto;
}

.history-empty {
    padding: 36px 12px;
    color: var(--melder-muted);
    text-align: center;
}

.history-item {
    padding: 13px;
    border: 1px solid var(--melder-border);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.05);
}

.history-item strong {
    display: block;
    margin-bottom: 5px;
}

.history-meta {
    color: var(--melder-muted);
    font-size: 0.82rem;
}

.connection-bar {
    position: fixed;
    left: 16px;
    right: 16px;
    bottom: 14px;
    z-index: 20;
    min-height: 48px;
    padding: 10px 14px;
    border: 1px solid var(--melder-border);
    border-radius: 14px;
    background: rgba(14, 19, 24, 0.94);
    backdrop-filter: blur(12px);
}

.settings-modal {
    position: fixed;
    inset: 0;
    z-index: 50;
    display: grid;
    place-items: center;
    padding: 18px;
    background: rgba(0, 0, 0, 0.62);
}

.settings-dialog {
    width: min(720px, 100%);
    max-height: calc(100vh - 36px);
    display: flex;
    flex-direction: column;
    border-radius: 18px;
    background: #151c23;
    overflow: hidden;
}

.settings-header,
.settings-footer {
    padding: 16px 18px;
    border-bottom: 1px solid var(--melder-border);
}

.settings-footer {
    border-top: 1px solid var(--melder-border);
    border-bottom: 0;
    justify-content: flex-end;
    flex-wrap: wrap;
}

.settings-body {
    padding: 18px;
    overflow: auto;
}

.settings-section {
    margin-bottom: 18px;
    padding-bottom: 18px;
    border-bottom: 1px solid var(--melder-border);
}

.settings-section h3 {
    margin: 0 0 12px;
    font-size: 1rem;
}

.settings-field {
    margin-bottom: 12px;
}

.settings-field label {
    display: block;
    margin-bottom: 7px;
    color: var(--melder-muted);
}

.settings-field small {
    display: block;
    margin-top: 6px;
    color: var(--melder-muted);
}

.settings-checkbox {
    display: flex;
    gap: 10px;
    align-items: center;
}

.settings-checkbox input {
    width: auto;
}

.connection-status {
    padding: 12px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.05);
}

.status-value {
    color: var(--melder-text);
}

.btn-primary,
.btn-secondary,
.btn-tertiary {
    min-height: 40px;
    padding: 0 14px;
}

.btn-primary {
    background: var(--melder-blue);
}

.btn-secondary {
    background: #2d8a58;
}

.btn-tertiary {
    background: #46515c;
}

@media (max-width: 820px) {
    .melder-container {
        grid-template-columns: 1fr;
        width: min(460px, calc(100vw - 24px));
        margin-top: 12px;
    }

    .melder-device {
        padding: 16px;
        border-radius: 20px;
    }

    .melder-screen {
        min-height: 285px;
        padding: 16px;
    }

    .button-group {
        gap: 8px;
    }
}