/*
 * portal.css — viewer gateway styling. Plain CSS + variables (the framework's
 * default soft convention; no prototype adopted). Mobile-first, self-contained,
 * no vendored CSS. Safe-area insets are respected (a hard rule that survives
 * regardless of look & feel).
 */

:root {
    --bg:        #0f1216;
    --bg-2:      #151a20;
    --card:      #1b2129;
    --card-2:    #212a34;
    --text:      #e8eaed;
    --muted:     #97a0ab;
    --line:      #2c3742;
    --accent:    #4f8cff;
    --accent-2:  #6ba0ff;
    --danger:    #ff6b6b;
    --success:   #4bd48a;
    --info:      #8fb8ff;
    --radius:    14px;
    --shadow:    0 18px 48px rgba(0, 0, 0, .45);
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    min-height: 100%;
}

body {
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    color: var(--text);
    background: radial-gradient(1200px 700px at 50% -10%, var(--bg-2), var(--bg));
    min-height: 100vh;
    min-height: 100dvh;
    display: grid;
    place-items: center;
    padding: calc(1.25rem + env(safe-area-inset-top)) calc(1.25rem + env(safe-area-inset-right))
             calc(1.25rem + env(safe-area-inset-bottom)) calc(1.25rem + env(safe-area-inset-left));
    -webkit-text-size-adjust: 100%;
}

.portal-card {
    position: relative;
    width: 100%;
    max-width: 26rem;
    background: linear-gradient(180deg, var(--card-2), var(--card));
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 1.75rem 1.5rem 1.5rem;
    overflow: hidden;
}

.portal-head {
    display: flex;
    align-items: center;
    gap: .6rem;
    margin-bottom: 1.1rem;
}

.portal-mark {
    display: grid;
    place-items: center;
    width: 2rem;
    height: 2rem;
    border-radius: 8px;
    background: linear-gradient(140deg, var(--accent), #7a5cff);
    color: #fff;
    font-size: 1rem;
}

.portal-title  { font-size: 1.2rem; font-weight: 650; margin: 0; letter-spacing: .2px; }
.portal-subtitle { font-size: 1.05rem; font-weight: 650; margin: 0 0 .4rem; }

.portal-lead {
    color: var(--muted);
    font-size: .92rem;
    line-height: 1.55;
    margin: 0 0 1.15rem;
}

/* Views: only the active one is shown. */
.portal-view { display: none; }
.portal-view.is-active { display: block; animation: portal-fade .18s ease; }

@keyframes portal-fade { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }

.portal-field { display: block; margin-bottom: 1rem; }
.portal-field > span {
    display: block;
    font-size: .8rem;
    color: var(--muted);
    margin-bottom: .4rem;
}

.portal-field input,
.portal-field textarea {
    width: 100%;
    font: inherit;
    color: var(--text);
    background: var(--bg-2);
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: .7rem .8rem;
    transition: border-color .15s ease, box-shadow .15s ease;
}
.portal-field textarea { resize: vertical; min-height: 3.6rem; }

.portal-field input:focus,
.portal-field textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(79, 140, 255, .18);
}

.portal-otc {
    letter-spacing: .55em;
    text-align: center;
    font-size: 1.35rem;
    font-variant-numeric: tabular-nums;
    padding-left: .55em; /* offset the trailing letter-spacing so digits look centred */
}

.portal-btn {
    display: block;
    width: 100%;
    font: inherit;
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    border: 1px solid transparent;
    border-radius: 10px;
    padding: .75rem 1rem;
    cursor: pointer;
    transition: transform .05s ease, background .15s ease, opacity .15s ease;
}
.portal-btn:active { transform: translateY(1px); }

.portal-btn--primary {
    color: #fff;
    background: linear-gradient(180deg, var(--accent-2), var(--accent));
}
.portal-btn--primary:hover { filter: brightness(1.05); }

.portal-link {
    display: inline-block;
    margin-top: 1rem;
    color: var(--accent-2);
    font-size: .88rem;
    text-decoration: none;
}
.portal-link:hover { text-decoration: underline; }

.portal-msg {
    font-size: .88rem;
    line-height: 1.45;
    border-radius: 10px;
    padding: .65rem .8rem;
    margin: 0 0 1.1rem;
    border: 1px solid var(--line);
    background: var(--bg-2);
}
.portal-msg[hidden] { display: none; }
.portal-msg--error   { color: var(--danger);  border-color: rgba(255, 107, 107, .4); background: rgba(255, 107, 107, .08); }
.portal-msg--success { color: var(--success); border-color: rgba(75, 212, 138, .4); background: rgba(75, 212, 138, .08); }
.portal-msg--info    { color: var(--info);    border-color: rgba(143, 184, 255, .35); background: rgba(143, 184, 255, .08); }

/* Loading overlay (covers the card during any async step) */
.portal-loading {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: .8rem;
    background: rgba(15, 18, 22, .72);
    backdrop-filter: blur(2px);
    color: var(--text);
    font-size: .92rem;
}
.portal-loading[hidden] { display: none; }

.portal-spinner {
    width: 1.9rem;
    height: 1.9rem;
    border-radius: 50%;
    border: 3px solid var(--line);
    border-top-color: var(--accent);
    animation: portal-spin .8s linear infinite;
}
@keyframes portal-spin { to { transform: rotate(360deg); } }

@media (prefers-reduced-motion: reduce) {
    .portal-view.is-active { animation: none; }
    .portal-spinner { animation-duration: 1.6s; }
}

/* Light-scheme courtesy (system preference). */
@media (prefers-color-scheme: light) {
    :root {
        --bg: #eef1f5; --bg-2: #ffffff; --card: #ffffff; --card-2: #f7f9fc;
        --text: #1a2027; --muted: #5c6773; --line: #dde3ea;
    }
    .portal-loading { background: rgba(255, 255, 255, .72); }
}