:root {
    --bg: #050805;
    --panel: #080d08;
    --panel-2: #0b120b;

    --green: #39ff88;
    --green-dim: #1d9c52;
    --green-dark: #0d542d;

    --text: #b8ffc9;
    --muted: #4f8a62;

    --border: rgba(57, 255, 136, 0.18);
    --border-bright: rgba(57, 255, 136, 0.35);
}


* {
    box-sizing: border-box;
}


html,
body {
    width: 100%;
    height: 100%;

    margin: 0;
    padding: 0;

    overflow: hidden;
}


body {
    background:
        radial-gradient(
            circle at 50% 30%,
            #0b170d 0%,
            var(--bg) 60%
        );

    color: var(--text);

    font-family:
        "JetBrains Mono",
        "Fira Code",
        "Cascadia Code",
        Consolas,
        monospace;
}


/* --------------------------------------------------
   CRT scanlines
   -------------------------------------------------- */

.scanlines {
    position: fixed;
    inset: 0;

    pointer-events: none;

    z-index: 1000;

    opacity: 0.045;

    background:
        repeating-linear-gradient(
            to bottom,
            transparent 0px,
            transparent 2px,
            #000 3px
        );
}


/* --------------------------------------------------
   Application
   -------------------------------------------------- */

.app {
    width: min(1100px, calc(100% - 32px));
    height: 100vh;

    margin: 0 auto;

    display: flex;
    flex-direction: column;

    padding: 20px 0 12px;

    overflow: hidden;
}


/* --------------------------------------------------
   Header
   -------------------------------------------------- */

.header {
    flex: 0 0 auto;

    display: flex;
    align-items: center;
    justify-content: space-between;

    margin-bottom: 12px;
}


.title {
    color: var(--green);

    font-size: clamp(20px, 3vw, 30px);

    font-weight: 700;

    text-shadow:
        0 0 8px rgba(57, 255, 136, 0.4);
}


.subtitle {
    margin-top: 4px;

    color: var(--muted);

    font-size: 10px;

    text-transform: uppercase;

    letter-spacing: 0.14em;
}


.status {
    display: flex;
    align-items: center;

    gap: 7px;

    color: var(--green-dim);

    font-size: 10px;

    letter-spacing: 0.1em;
}


.status-dot {
    width: 7px;
    height: 7px;

    flex: 0 0 auto;

    border-radius: 50%;

    background: var(--green);

    box-shadow:
        0 0 7px var(--green);

    animation: pulse 2s infinite;
}


@keyframes pulse {
    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.35;
    }
}


/* --------------------------------------------------
   Terminal
   -------------------------------------------------- */

.terminal {
    flex: 1 1 auto;

    min-height: 0;

    display: flex;
    flex-direction: column;

    overflow: hidden;

    border: 1px solid var(--border);

    border-radius: 8px;

    background:
        linear-gradient(
            180deg,
            rgba(12, 25, 14, 0.96),
            rgba(4, 9, 5, 0.98)
        );

    box-shadow:
        0 0 30px rgba(0, 255, 100, 0.04),
        inset 0 0 40px rgba(0, 255, 100, 0.015);
}


/* --------------------------------------------------
   Terminal header
   -------------------------------------------------- */

.terminal-bar {
    flex: 0 0 38px;

    display: flex;
    align-items: center;
    justify-content: space-between;

    padding: 0 14px;

    border-bottom: 1px solid var(--border);

    background: rgba(0, 0, 0, 0.25);

    color: var(--green-dim);

    font-size: 10px;

    letter-spacing: 0.1em;
}


.terminal-info {
    color: var(--muted);
}


/* --------------------------------------------------
   Messages
   -------------------------------------------------- */

.messages {
    flex: 1 1 auto;

    min-height: 0;

    overflow-y: auto;
    overflow-x: hidden;

    padding: 20px;
}


.message {
    max-width: 850px;

    margin-bottom: 24px;

    animation: message-in 0.2s ease-out;
}


@keyframes message-in {
    from {
        opacity: 0;
        transform: translateY(4px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}


.message-label {
    margin-bottom: 6px;

    color: var(--muted);

    font-size: 9px;

    letter-spacing: 0.14em;
}


.message-body {
    line-height: 1.65;

    font-size: 14px;

    white-space: pre-wrap;

    overflow-wrap: anywhere;
}


.prompt {
    margin-right: 9px;

    color: var(--green);
}


.user {
    margin-left: auto;

    padding-left: 30px;

    text-align: right;
}


.user .message-label {
    color: var(--green-dark);
}


.user .message-body {
    color: #8edfa7;
}


/* --------------------------------------------------
   Input
   -------------------------------------------------- */

.input-area {
    flex: 0 0 62px;

    display: flex;
    align-items: center;

    min-width: 0;

    padding: 9px 12px;

    border-top: 1px solid var(--border);

    background: rgba(0, 0, 0, 0.3);
}


.input-prompt {
    flex: 0 0 auto;

    margin-right: 9px;

    color: var(--green);

    font-size: 17px;
}


input {
    flex: 1 1 auto;

    min-width: 0;
    width: 0;

    padding: 8px 0;

    border: 0;
    outline: 0;

    background: transparent;

    color: var(--green);

    font-family: inherit;
    font-size: 14px;
}


input::placeholder {
    color: #31583d;
}


input:disabled {
    opacity: 0.5;
}


button {
    flex: 0 0 auto;

    margin-left: 12px;

    padding: 8px 14px;

    border: 1px solid var(--border-bright);

    border-radius: 4px;

    background: rgba(57, 255, 136, 0.04);

    color: var(--green);

    font-family: inherit;
    font-size: 10px;

    cursor: pointer;

    letter-spacing: 0.08em;
}


button:hover:not(:disabled) {
    background: rgba(57, 255, 136, 0.1);

    border-color: var(--green);
}


button:disabled {
    opacity: 0.4;

    cursor: default;
}


/* --------------------------------------------------
   Footer
   -------------------------------------------------- */

footer {
    flex: 0 0 auto;

    display: flex;
    justify-content: center;

    gap: 9px;

    padding-top: 9px;

    color: #31583d;

    font-size: 8px;

    letter-spacing: 0.1em;
}


/* --------------------------------------------------
   Mobile
   -------------------------------------------------- */

@media (max-width: 600px) {

    .app {
        width: calc(100% - 12px);

        padding: 10px 0 8px;
    }


    .header {
        margin-bottom: 8px;
    }


    .title {
        font-size: 19px;
    }


    .subtitle {
        font-size: 8px;
    }


    .status {
        font-size: 8px;
    }


    .terminal-bar {
        flex-basis: 32px;

        padding: 0 10px;

        font-size: 8px;
    }


    .messages {
        padding: 14px;
    }


    .message-body {
        font-size: 13px;
    }


    .input-area {
        flex-basis: 56px;

        padding: 7px 9px;
    }


    input {
        font-size: 13px;
    }


    button {
        margin-left: 8px;

        padding: 8px 9px;
    }


    footer {
        display: none;
    }
}