/* Sprechstunde - the one look of both ends: the pupils' page (svp/sprechstunde.html) and Doc's
   Kontakt app (kontakt/index.html). Palette exact (λ orange, Υ red, φ green), ground
   almost black blue, Orbitron for headings. Phone first: the page is the screen, the compose field
   sits at the bottom, the list scrolls in between. */

:root {
    --sp-lambda: rgb(245, 194, 66);
    --sp-ypsilon: rgb(176, 36, 24);
    --sp-phi: rgb(121, 158, 49);
    --sp-ground: #050b18;
    --sp-panel: #0d1a30;
    --sp-line: rgba(255, 255, 255, 0.10);
    --sp-text: #e8edf6;
    --sp-muted: #8a96ab;
    --sp-mine: rgba(121, 158, 49, 0.22);
    --sp-theirs: #14233d;
}

@media (prefers-color-scheme: light) {
    :root {
        --sp-ground: #f4f6fa;
        --sp-panel: #ffffff;
        --sp-line: rgba(10, 20, 40, 0.12);
        --sp-text: #142033;
        --sp-muted: #5d6779;
        --sp-mine: rgba(121, 158, 49, 0.20);
        --sp-theirs: #ffffff;
    }
}

* { box-sizing: border-box; }

/* the pages switch views with the hidden attribute - it must beat the display rules below */
[hidden] { display: none !important; }

html, body { height: 100%; }

body.sp-page {
    margin: 0;
    display: flex;
    flex-direction: column;
    background: var(--sp-ground);
    color: var(--sp-text);
    font-family: 'Outfit', system-ui, sans-serif;
    font-size: 16px;
}

.sp-wrap {
    width: 100%;
    max-width: 760px;
    margin: 0 auto;
    padding: 0 16px;
}

/* The chat is a window (Doc, 29.10.2026: "zu groß und zu leer"): on a phone or in its own popup it
   fills the screen; on a wide screen it is a phone-sized card in the middle, never a full-width page. */
.sp-window {
    flex: 1;
    min-height: 0;
    width: 100%;
    display: flex;
    flex-direction: column;
    background: var(--sp-ground);
}

@media (min-width: 700px) {
    body.sp-page {
        align-items: center;
        justify-content: center;
        padding: 24px;
        background:
            radial-gradient(circle at 50% 0%, color-mix(in srgb, var(--sp-phi) 14%, transparent), transparent 60%),
            var(--sp-ground);
    }
    .sp-window {
        flex: 0 1 auto;
        width: min(440px, 100%);
        height: min(760px, 100%);
        border: 1px solid var(--sp-line);
        border-radius: 20px;
        overflow: hidden;
        box-shadow: 0 18px 60px rgba(0, 0, 0, 0.45);
    }
}

/* --- head: back, red phone, title --------------------------------------- */

.sp-head {
    border-bottom: 1px solid var(--sp-line);
    background: var(--sp-panel);
    padding-top: env(safe-area-inset-top);
}

.sp-head .sp-wrap {
    display: flex;
    align-items: center;
    gap: 12px;
    min-height: 64px;
}

.sp-back, .sp-bell {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    width: 40px;
    height: 40px;
    border-radius: 10px;
    border: 1px solid var(--sp-line);
    color: var(--sp-muted);
    text-decoration: none;
    background: transparent;
    cursor: pointer;
}

.sp-back svg, .sp-bell svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 2.4; stroke-linecap: round; stroke-linejoin: round; }
.sp-back:hover, .sp-bell:hover { color: var(--sp-text); border-color: var(--sp-muted); }

/* the Kontakt app's bell: green while the push comes to this device */
.sp-bell.on { color: var(--sp-phi); border-color: var(--sp-phi); background: color-mix(in srgb, var(--sp-phi) 14%, transparent); }
.sp-bell.on svg { fill: color-mix(in srgb, var(--sp-phi) 35%, transparent); }

.sp-phone-ico { width: 34px; height: 34px; flex: 0 0 auto; display: block; }

.sp-title { min-width: 0; flex: 1; }

.sp-title h1 {
    margin: 0;
    font-family: 'Orbitron', sans-serif;
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: 0.03em;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sp-title p { margin: 2px 0 0; font-size: 0.82rem; color: var(--sp-muted); }

.sp-tools { display: flex; gap: 8px; flex: 0 0 auto; }

/* --- notes under the head ------------------------------------------------ */

.sp-note {
    margin: 10px 0 0;
    padding: 8px 12px;
    border-radius: 10px;
    border-left: 3px solid var(--sp-phi);
    background: color-mix(in srgb, var(--sp-phi) 10%, transparent);
    font-size: 0.82rem;
    line-height: 1.45;
    color: var(--sp-muted);
}

.sp-note.warn { border-left-color: var(--sp-ypsilon); background: color-mix(in srgb, var(--sp-ypsilon) 12%, transparent); color: var(--sp-text); }

/* --- the conversation ---------------------------------------------------- */

.sp-main { flex: 1; min-height: 0; display: flex; flex-direction: column; position: relative; isolation: isolate; }

/* Wallpaper behind the conversation (Doc, 29.10.2026: "ein schönes Hintergrundbild, natürlich
   abgedimmt"): a tile of maths doodles in the palette, faint enough that the bubbles stay in front. */
.sp-main::before {
    content: '';
    position: absolute;
    inset: 0;
    z-index: -1;
    background: url('sprechstunde-bg.svg') center top / 300px repeat;
    opacity: 0.10;
    pointer-events: none;
}
.sp-main > .sp-wrap { flex: 1; min-height: 0; display: flex; flex-direction: column; }

.sp-msgs {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    padding: 14px 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.sp-empty { margin: auto; color: var(--sp-muted); text-align: center; font-size: 0.95rem; line-height: 1.5; }

.sp-msg { max-width: 82%; display: flex; flex-direction: column; }
.sp-msg.mine { align-self: flex-end; align-items: flex-end; }
.sp-msg.theirs { align-self: flex-start; align-items: flex-start; }

.sp-body {
    padding: 9px 13px;
    border-radius: 16px;
    line-height: 1.4;
    white-space: pre-wrap;
    overflow-wrap: anywhere;
    border: 1px solid var(--sp-line);
}

.sp-msg.mine .sp-body { background: var(--sp-mine); border-bottom-right-radius: 5px; }
.sp-msg.theirs .sp-body { background: var(--sp-theirs); border-bottom-left-radius: 5px; }
.sp-msg.pending { opacity: 0.6; }
.sp-msg.failed .sp-body { border-color: var(--sp-ypsilon); }

.sp-meta { margin-top: 3px; font-size: 0.72rem; color: var(--sp-muted); }

/* --- compose ------------------------------------------------------------- */

.sp-compose {
    border-top: 1px solid var(--sp-line);
    background: var(--sp-panel);
    padding-bottom: env(safe-area-inset-bottom);
}

.sp-compose .sp-wrap { display: flex; align-items: flex-end; gap: 10px; padding-top: 10px; padding-bottom: 10px; }

.sp-compose textarea {
    flex: 1;
    min-width: 0;
    resize: none;
    max-height: 9.5em;
    padding: 10px 14px;
    border-radius: 14px;
    border: 1px solid var(--sp-line);
    background: var(--sp-ground);
    color: var(--sp-text);
    font: inherit;
    line-height: 1.35;
    overflow-y: hidden;          /* autoGrow switches it on only once the field is full */
}

.sp-compose textarea:focus { outline: none; border-color: var(--sp-phi); }

.sp-send {
    flex: 0 0 auto;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    border: 0;
    background: var(--sp-phi);
    color: #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

.sp-send svg { width: 21px; height: 21px; fill: none; stroke: currentColor; stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round; }
.sp-send:disabled { opacity: 0.4; cursor: default; }

.sp-count { font-size: 0.72rem; color: var(--sp-muted); text-align: right; padding: 0 0 6px; }

.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* --- Doc's view: list of chats ------------------------------------------- */

.sp-list { list-style: none; margin: 0; padding: 10px 0; display: flex; flex-direction: column; gap: 6px; overflow-y: auto; }

.sp-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 14px;
    border-radius: 12px;
    background: var(--sp-panel);
    border: 1px solid var(--sp-line);
    cursor: pointer;
    color: inherit;
    font: inherit;
    text-align: left;
    width: 100%;
}

.sp-item:hover { border-color: var(--sp-muted); }
.sp-item .sp-item-main { flex: 1; min-width: 0; }
.sp-item .sp-item-name { font-family: 'Orbitron', sans-serif; font-weight: 700; font-size: 0.95rem; }
.sp-item .sp-item-sub { font-size: 0.8rem; color: var(--sp-muted); margin-top: 2px; }
.sp-item.blocked .sp-item-name { text-decoration: line-through; text-decoration-color: var(--sp-ypsilon); }

.sp-badge {
    min-width: 22px;
    height: 22px;
    padding: 0 7px;
    border-radius: 11px;
    background: var(--sp-phi);
    color: #fff;
    font-size: 0.75rem;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.sp-btn {
    height: 40px;
    padding: 0 14px;
    border-radius: 10px;
    border: 1px solid var(--sp-line);
    background: transparent;
    color: var(--sp-text);
    font: inherit;
    font-size: 0.85rem;
    cursor: pointer;
    white-space: nowrap;
}

.sp-btn:hover { border-color: var(--sp-muted); }
.sp-btn.danger { color: var(--sp-ypsilon); border-color: color-mix(in srgb, var(--sp-ypsilon) 50%, transparent); }
.sp-btn.armed { background: var(--sp-ypsilon); color: #fff; }

@media (max-width: 480px) {
    .sp-btn { padding: 0 10px; font-size: 0.8rem; }
    .sp-msg { max-width: 88%; }
}

/* --- login + key dialogs (svpAuth.loginDialog, svpCrypto.passDialog) on these svp.css-less pages ---- */

.svp-gate-overlay { position: fixed; inset: 0; z-index: 2000; display: flex; align-items: center; justify-content: center; background: rgba(2, 6, 16, 0.7); padding: 16px; }
.svp-gate-card { width: min(100%, 360px); padding: 26px 24px; border-radius: 16px; background: var(--sp-panel); border: 1px solid var(--sp-line); text-align: center; }
.svp-gate-title { font-family: 'Orbitron', sans-serif; font-size: 1.02rem; letter-spacing: 0.05em; margin-bottom: 6px; }
.svp-gate-sub { font-size: 0.85rem; color: var(--sp-muted); margin-bottom: 16px; line-height: 1.4; }
.svp-gate-card input { width: 100%; margin-bottom: 12px; padding: 11px 12px; border-radius: 10px; border: 1px solid var(--sp-line); background: var(--sp-ground); color: var(--sp-text); font: inherit; text-align: center; }
.svp-gate-card input:focus { outline: none; border-color: var(--sp-phi); }
.svp-gate-row { display: flex; gap: 10px; }
.svp-gate-card button { flex: 1; height: 44px; border-radius: 10px; border: 1px solid var(--sp-line); background: transparent; color: var(--sp-text); font-family: 'Orbitron', sans-serif; font-size: 0.72rem; letter-spacing: 0.05em; cursor: pointer; }
.svp-gate-card button.action:not(.secondary) { background: var(--sp-phi); border-color: var(--sp-phi); color: #fff; }
.svp-gate-err { margin-top: 10px; min-height: 1em; font-size: 0.8rem; color: var(--sp-ypsilon); }