/* Traduttore Portatile — design system Sistemi Dinamici, adattato mobile-first */

:root {
    --orange: #ff3800;
    --navy: #1d2150;
    --ink: #22253f;
    --text: #666666;
    --bg: #f4f6fb;
    --surface: rgba(255, 255, 255, 0.88);
    --surface-strong: #ffffff;
    --border: rgba(29, 33, 80, 0.12);
    --shadow: 0 24px 60px rgba(29, 33, 80, 0.14);
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
    margin: 0;
    color: var(--ink);
    background:
        radial-gradient(circle at top left, rgba(255, 56, 0, 0.12), transparent 30%),
        radial-gradient(circle at top right, rgba(29, 33, 80, 0.14), transparent 32%),
        linear-gradient(180deg, #eef1f8 0%, #f8f9fc 100%);
    font-family: "Poppins", sans-serif;
    overscroll-behavior: none;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    background-image:
        linear-gradient(rgba(29, 33, 80, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(29, 33, 80, 0.04) 1px, transparent 1px);
    background-size: 36px 36px;
    mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.58), transparent 92%);
}

.app-shell {
    position: relative;
    display: flex;
    flex-direction: column;
    height: 100dvh;
    max-width: 720px;
    margin: 0 auto;
    padding: 0 14px calc(10px + env(safe-area-inset-bottom));
}

/* ---------------------------------------------------------------- topbar */
.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    padding: 14px 4px 8px;
}

.brand {
    text-decoration: none;
    color: var(--navy);
    font-family: "Manrope", sans-serif;
    font-weight: 800;
    font-size: 1.3rem;
    letter-spacing: -0.04em;
}

.brand span { color: var(--orange); }

.topbar-right { display: flex; align-items: center; gap: 12px; }

.icon-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: rgba(29, 33, 80, 0.03);
    color: var(--navy);
    font-size: 1.15rem;
    cursor: pointer;
    transition: transform 160ms ease;
}
.icon-btn:active { transform: rotate(180deg); }

.status-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #b9bed4;
    box-shadow: 0 0 0 4px rgba(29, 33, 80, 0.06);
}
.status-dot[data-state="ready"] { background: #0e9958; }
.status-dot[data-state="busy"] { background: #f0a000; }
.status-dot[data-state="error"], .status-dot[data-state="offline"] { background: #d62020; }
.status-dot[data-state="busy"] { animation: pulse 1s ease-in-out infinite; }

@keyframes pulse {
    50% { box-shadow: 0 0 0 7px rgba(240, 160, 0, 0.15); }
}

/* -------------------------------------------------------------- lingue */
.lang-row {
    display: flex;
    flex-wrap: nowrap;
    overflow-x: auto;
    gap: 8px;
    padding: 4px;
    scrollbar-width: none;
}
.lang-row::-webkit-scrollbar { display: none; }

.lang-chip {
    flex: 0 0 auto;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: rgba(29, 33, 80, 0.05);
    color: var(--navy);
    font-size: 0.88rem;
    font-weight: 500;
    cursor: pointer;
    transition: transform 160ms ease, background 160ms ease;
}
.lang-chip.active {
    background: rgba(255, 56, 0, 0.12);
    border-color: rgba(255, 56, 0, 0.3);
    color: var(--orange);
    font-weight: 600;
}
.lang-chip:active { transform: translateY(-1px); }

/* -------------------------------------------------------------- banner */
.banner {
    margin: 8px 4px 0;
    padding: 12px 14px;
    border-radius: 18px;
    border: 1px solid rgba(255, 56, 0, 0.18);
    background: rgba(255, 255, 255, 0.92);
    box-shadow: var(--shadow);
    font-size: 0.88rem;
    color: var(--ink);
}

/* ------------------------------------------------------------ cronologia */
.history {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 12px 4px;
    -webkit-overflow-scrolling: touch;
}

.empty-hint {
    margin: auto;
    text-align: center;
    color: var(--text);
    font-size: 0.92rem;
    line-height: 1.7;
    max-width: 34ch;
}
.empty-hint strong { color: var(--navy); }

.bubble {
    position: relative;
    max-width: 86%;
    padding: 12px 14px;
    border-radius: 22px;
    border: 1px solid var(--border);
    background: var(--surface-strong);
    box-shadow: 0 10px 26px rgba(29, 33, 80, 0.08);
    cursor: pointer;
}
.bubble.mine {
    align-self: flex-end;
    border-bottom-right-radius: 8px;
    background: linear-gradient(135deg, rgba(255, 56, 0, 0.09), rgba(255, 120, 79, 0.05)), #ffffff;
}
.bubble.theirs {
    align-self: flex-start;
    border-bottom-left-radius: 8px;
    background: linear-gradient(135deg, rgba(29, 33, 80, 0.07), rgba(29, 33, 80, 0.02)), #ffffff;
}

.bubble .src {
    margin: 0 0 4px;
    font-size: 0.78rem;
    color: var(--text);
}
.bubble .dst {
    margin: 0;
    font-size: 1.05rem;
    line-height: 1.45;
    color: var(--ink);
    white-space: pre-wrap;
}
.bubble.pending .dst::after {
    content: "▋";
    color: var(--orange);
    animation: blink 0.9s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

.bubble .meta {
    margin-top: 4px;
    font-size: 0.7rem;
    color: var(--text);
    opacity: 0.8;
}

.bubble.error {
    border-color: rgba(214, 32, 32, 0.3);
}
.bubble.error .dst { color: #b62020; font-size: 0.92rem; }

.retry-btn {
    margin-top: 8px;
    display: inline-flex;
    align-items: center;
    min-height: 34px;
    padding: 0 14px;
    border-radius: 999px;
    border: 1px solid transparent;
    background: linear-gradient(135deg, var(--orange), #ff784f);
    color: #fff;
    font: inherit;
    font-size: 0.85rem;
    cursor: pointer;
}

.divider {
    align-self: center;
    margin: 6px 0;
    padding: 5px 14px;
    border-radius: 999px;
    background: rgba(29, 33, 80, 0.07);
    color: var(--navy);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

/* -------------------------------------------------------------- interim */
.interim {
    margin: 0 4px 8px;
    padding: 10px 14px;
    border-radius: 18px;
    border: 1px dashed rgba(255, 56, 0, 0.4);
    background: rgba(255, 255, 255, 0.9);
    font-size: 0.95rem;
    color: var(--ink);
    min-height: 42px;
}
.interim-lang {
    display: inline-block;
    margin-right: 8px;
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--orange);
}

/* ---------------------------------------------------------------- PTT */
.ptt-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    padding: 4px;
}

.ptt {
    position: relative;
    min-height: 108px;
    border-radius: 28px;
    border: 1px solid transparent;
    font-family: "Poppins", sans-serif;
    cursor: pointer;
    user-select: none;
    -webkit-user-select: none;
    touch-action: none;
    -webkit-touch-callout: none;
    transition: transform 120ms ease, box-shadow 120ms ease, opacity 160ms ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

.ptt-flag { font-size: 1.7rem; line-height: 1; pointer-events: none; }
.ptt-label {
    font-size: 0.92rem;
    font-weight: 600;
    line-height: 1.3;
    text-align: center;
    pointer-events: none;
}

.ptt-it {
    background: linear-gradient(135deg, var(--orange), #ff784f);
    color: #fff;
    box-shadow: 0 18px 34px rgba(255, 56, 0, 0.22);
}
.ptt-fo {
    background: linear-gradient(135deg, var(--navy), #34396f);
    color: #fff;
    box-shadow: 0 18px 34px rgba(29, 33, 80, 0.25);
}

.ptt.recording {
    transform: scale(0.97);
}
.ptt.recording::after {
    content: "";
    position: absolute;
    inset: -5px;
    border-radius: 32px;
    border: 3px solid rgba(255, 56, 0, 0.55);
    animation: ring 1.1s ease-out infinite;
    pointer-events: none;
}
.ptt-fo.recording::after { border-color: rgba(120, 130, 220, 0.7); }

@keyframes ring {
    0% { opacity: 1; transform: scale(0.99); }
    100% { opacity: 0; transform: scale(1.06); }
}

.ptt:disabled, .ptt.blocked {
    opacity: 0.45;
    cursor: not-allowed;
}

@media (min-width: 720px) {
    .ptt { min-height: 124px; }
    .brand { font-size: 1.55rem; }
}

/* ----------------------------------------------------------------- login */
.login-shell {
    justify-content: center;
    align-items: center;
}

.login-card {
    width: min(380px, 100%);
    padding: 34px 28px;
    border-radius: 28px;
    border: 1px solid var(--border);
    background: var(--surface);
    backdrop-filter: blur(16px);
    box-shadow: var(--shadow);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.login-card::after {
    content: "";
    position: absolute;
    inset: auto -18% -62% auto;
    width: 220px;
    height: 220px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255, 56, 0, 0.16), transparent 68%);
    pointer-events: none;
}

.login-hint {
    margin: 12px 0 22px;
    color: var(--text);
    font-size: 0.92rem;
}

.login-form {
    display: grid;
    gap: 12px;
}

.login-input {
    width: 100%;
    padding: 13px 14px;
    border-radius: 16px;
    border: 1px solid var(--border);
    background: #fbfcff;
    color: var(--ink);
    font: inherit;
    text-align: center;
}
.login-input:focus {
    outline: none;
    border-color: rgba(255, 56, 0, 0.45);
}

.login-btn {
    min-height: 46px;
    border-radius: 999px;
    border: 1px solid transparent;
    background: linear-gradient(135deg, var(--orange), #ff784f);
    color: #fff;
    font: inherit;
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 18px 34px rgba(255, 56, 0, 0.22);
    transition: transform 160ms ease;
}
.login-btn:hover { transform: translateY(-1px); }

.login-error {
    margin: 16px 0 0;
    color: #b62020;
    font-size: 0.88rem;
}