* {
    box-sizing: border-box;
}

:root {
    --bg: #050b12;
    --panel: #0c1825;
    --panel-2: #112237;
    --border: rgba(255,255,255,0.09);
    --text: #f4f8fc;
    --muted: #91a3b6;
    --cyan: #48d7ff;
    --blue: #3b8fff;
    --green: #43dfa0;
    --orange: #ffab49;
    --red: #ff5368;
    --purple: #9c7cff;
}

html,
body {
    margin: 0;
    min-height: 100%;
    background: var(--bg);
    color: var(--text);
    font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body {
    background:
        radial-gradient(circle at top, rgba(59,143,255,0.18), transparent 34%),
        var(--bg);
    overscroll-behavior: none;
    -webkit-tap-highlight-color: transparent;
}

button,
input {
    font: inherit;
}

button {
    touch-action: manipulation;
}

.app-shell {
    width: 100%;
    max-width: 520px;
    min-height: 100dvh;
    margin: 0 auto;
    padding:
        max(16px, env(safe-area-inset-top))
        15px
        max(24px, env(safe-area-inset-bottom));
    display: grid;
    align-content: start;
    gap: 12px;
}

.app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    padding: 4px 2px 6px;
}

h1,
h2 {
    margin: 0;
}

h1 {
    margin-top: 3px;
    font-size: 1.8rem;
    letter-spacing: -0.045em;
}

h2 {
    margin-top: 3px;
    font-size: 1.08rem;
    letter-spacing: -0.025em;
}

.eyebrow,
.small-label {
    color: var(--cyan);
    font-size: 0.68rem;
    font-weight: 800;
    letter-spacing: 0.15em;
}

.connection-state,
.mode-indicator {
    display: flex;
    align-items: center;
    gap: 7px;
    color: var(--muted);
    font-size: 0.78rem;
    font-weight: 700;
}

.status-dot,
.auto-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #586777;
}

.status-dot.connected {
    background: var(--green);
    box-shadow: 0 0 14px rgba(67,223,160,0.6);
}

.auto-dot.running {
    background: var(--orange);
    box-shadow: 0 0 14px rgba(255,171,73,0.6);
}

.card,
.status-card {
    border: 1px solid var(--border);
    border-radius: 19px;
    background:
        linear-gradient(145deg, rgba(255,255,255,0.025), transparent),
        var(--panel);
    box-shadow: 0 16px 38px rgba(0,0,0,0.28);
}

.card {
    padding: 16px;
}

.connect-card {
    padding: 10px;
    display: grid;
    grid-template-columns: 1fr 0.78fr;
    gap: 9px;
}

.status-card {
    padding: 13px 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.status-card > div:first-child {
    display: grid;
    gap: 2px;
}

.status-card strong {
    font-size: 1rem;
}

.control-heading,
.monitor-heading {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 12px;
    margin-bottom: 12px;
}

.control-heading.compact {
    margin-bottom: 13px;
}

.control-heading > strong {
    font-size: 1.15rem;
}

.end-labels {
    display: flex;
    justify-content: space-between;
    color: var(--muted);
    font-size: 0.72rem;
    font-weight: 700;
    margin-bottom: 6px;
}

input[type="range"] {
    width: 100%;
    height: 30px;
    margin: 0;
    appearance: none;
    -webkit-appearance: none;
    background: transparent;
    cursor: pointer;
}

input[type="range"]::-webkit-slider-runnable-track {
    height: 8px;
    border-radius: 999px;
    background: linear-gradient(90deg, rgba(72,215,255,0.55), rgba(156,124,255,0.8));
}

input[type="range"]::-webkit-slider-thumb {
    appearance: none;
    -webkit-appearance: none;
    width: 27px;
    height: 27px;
    margin-top: -9.5px;
    border-radius: 50%;
    border: 4px solid var(--panel);
    background: white;
    box-shadow: 0 0 0 2px rgba(72,215,255,0.5);
}

input[type="range"]::-moz-range-track {
    height: 8px;
    border-radius: 999px;
    background: linear-gradient(90deg, rgba(72,215,255,0.55), rgba(156,124,255,0.8));
}

input[type="range"]::-moz-range-thumb {
    width: 23px;
    height: 23px;
    border-radius: 50%;
    border: 4px solid var(--panel);
    background: white;
}

.button,
.step-button,
.monitor-button {
    border: 1px solid var(--border);
    color: var(--text);
    background: var(--panel-2);
    font-weight: 800;
    cursor: pointer;
}

.button {
    min-height: 50px;
    padding: 11px 13px;
    border-radius: 14px;
}

.button:active:not(:disabled),
.step-button:active,
.monitor-button:active {
    transform: scale(0.975);
}

.button:disabled {
    opacity: 0.38;
    cursor: default;
}

.button-primary {
    background: linear-gradient(135deg, rgba(72,215,255,0.24), rgba(59,143,255,0.26));
    border-color: rgba(72,215,255,0.28);
}

.button-muted {
    color: var(--muted);
}

.button-load {
    background: linear-gradient(135deg, rgba(72,215,255,0.23), rgba(59,143,255,0.2));
}

.button-launch {
    background: linear-gradient(135deg, rgba(255,171,73,0.3), rgba(255,100,64,0.2));
}

.button-auto {
    width: 100%;
    margin-top: 14px;
    background: linear-gradient(135deg, rgba(156,124,255,0.3), rgba(59,143,255,0.24));
}

.button-auto.running {
    background: linear-gradient(135deg, rgba(255,171,73,0.3), rgba(255,83,104,0.23));
}

.two-column,
.bottom-controls {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.interval-row {
    display: grid;
    grid-template-columns: 48px 1fr 48px;
    gap: 9px;
    align-items: center;
    margin-bottom: 5px;
}

.step-button {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    font-size: 1.5rem;
}

.interval-value {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 7px;
}

.interval-value strong {
    font-size: 1.6rem;
}

.interval-value span {
    color: var(--muted);
    font-size: 0.75rem;
    font-weight: 700;
}

.bottom-controls {
    position: sticky;
    bottom: max(8px, env(safe-area-inset-bottom));
    z-index: 2;
    padding-top: 1px;
}

.button-stop,
.button-idle {
    min-height: 60px;
    font-size: 1rem;
}

.button-stop {
    background: linear-gradient(135deg, rgba(255,83,104,0.35), rgba(154,32,58,0.35));
}

.button-idle {
    background: linear-gradient(135deg, rgba(145,163,182,0.18), rgba(72,88,108,0.2));
}

.monitor-card {
    min-width: 0;
}

.monitor-heading {
    align-items: center;
}

.monitor-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.telemetry-toggle {
    display: flex;
    align-items: center;
    gap: 5px;
    color: var(--muted);
    font-size: 0.72rem;
    font-weight: 700;
    cursor: pointer;
}

.telemetry-toggle input {
    accent-color: var(--cyan);
}

.monitor-button {
    min-height: 32px;
    padding: 5px 10px;
    border-radius: 9px;
    color: var(--muted);
    font-size: 0.72rem;
}

.monitor-output {
    height: 240px;
    overflow: auto;
    padding: 10px;
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 12px;
    background: #03070c;
    color: #c8d7e6;
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
    font-size: 0.7rem;
    line-height: 1.45;
    overscroll-behavior: contain;
}

.monitor-line {
    display: grid;
    grid-template-columns: 82px 28px minmax(0, 1fr);
    gap: 7px;
    padding: 2px 0;
    border-bottom: 1px solid rgba(255,255,255,0.025);
}

.monitor-time {
    color: #66798c;
}

.monitor-direction {
    color: var(--cyan);
    font-weight: 900;
}

.monitor-text {
    overflow-wrap: anywhere;
    white-space: pre-wrap;
}

.monitor-send .monitor-direction,
.monitor-send .monitor-text {
    color: #7fddff;
}

.monitor-ack .monitor-direction,
.monitor-ack .monitor-text {
    color: var(--green);
}

.monitor-error .monitor-direction,
.monitor-error .monitor-text {
    color: var(--red);
}

.monitor-telemetry .monitor-text {
    color: #8fa7bd;
}

.monitor-system .monitor-direction,
.monitor-system .monitor-text {
    color: var(--purple);
}

.message-output {
    min-height: 20px;
    margin: 0;
    padding: 2px 4px;
    color: var(--muted);
    font-size: 0.73rem;
    text-align: center;
    line-height: 1.35;
}

@media (max-width: 420px) {
    .monitor-heading {
        align-items: flex-start;
        flex-direction: column;
    }

    .monitor-actions {
        width: 100%;
        justify-content: space-between;
    }

    .monitor-line {
        grid-template-columns: 70px 24px minmax(0, 1fr);
        gap: 5px;
    }
}

@media (max-height: 720px) {
    .app-shell {
        gap: 8px;
        padding-top: 10px;
    }

    .card {
        padding: 12px;
    }

    .button {
        min-height: 45px;
    }

    .button-stop,
    .button-idle {
        min-height: 52px;
    }
}

/* =========================================================
   STATE-MACHINE CONTROLLER ADDITIONS
   ========================================================= */

.state-detail {
    display: block;
    margin-top: 3px;
    color: var(--muted);
    font-size: 0.7rem;
    font-weight: 650;
}

.safety-note {
    margin: 10px 2px 0;
    color: var(--muted);
    font-size: 0.72rem;
    line-height: 1.4;
}

.bottom-controls.single-control {
    grid-template-columns: 1fr;
}

.bottom-controls.single-control .button-stop {
    min-height: 64px;
    font-size: 1.05rem;
}