/* ============================================================
   KAN ↔ ENG Translator · Mobile-first dark theme
   ============================================================ */

/* ── Reset & base ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --bg:          #0d0d0d;
    --surface:     #1a1a1a;
    --surface2:    #242424;
    --border:      #333;
    --text:        #f0f0f0;
    --text-muted:  #888;
    --accent:      #f97316;   /* Karnataka orange */
    --eng:         #3b82f6;   /* blue for English */
    --kan:         #a855f7;   /* purple for Kannada */
    --danger:      #ef4444;
    --success:     #22c55e;
    --radius:      14px;
    --radius-sm:   8px;
    --header-h:    56px;
    --bottom-h:    200px;
}

html, body {
    height: 100%;
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Noto Sans Kannada', sans-serif;
    font-size: 16px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    overscroll-behavior: none;
}

a { color: inherit; text-decoration: none; }
button { cursor: pointer; border: none; background: none; font: inherit; color: inherit; }

/* ── Utility ──────────────────────────────────────────────── */
.hidden { display: none !important; }

/* ── LOGIN PAGE ───────────────────────────────────────────── */
.login-body {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 24px;
    background: radial-gradient(ellipse at top, #1a0a00 0%, var(--bg) 70%);
}

.login-wrap { width: 100%; max-width: 380px; }

.login-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 40px 32px;
    text-align: center;
}

.login-logo { margin-bottom: 32px; }
.logo-flag  { font-size: 48px; display: block; margin-bottom: 12px; }
.login-title   { font-size: 22px; font-weight: 700; color: var(--accent); }
.login-subtitle { font-size: 14px; color: var(--text-muted); margin-top: 4px; }

.login-form { text-align: left; }

.field-label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: .05em;
}

.field-input {
    width: 100%;
    background: var(--surface2);
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text);
    font-size: 16px;
    padding: 12px 14px;
    margin-bottom: 16px;
    outline: none;
    transition: border-color .2s;
}
.field-input:focus { border-color: var(--accent); }

/* ── BUTTONS ──────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 15px;
    font-weight: 600;
    padding: 13px 24px;
    border-radius: var(--radius-sm);
    transition: opacity .15s, transform .1s;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}
.btn:active { transform: scale(.97); opacity: .85; }

.btn-primary  { background: var(--accent); color: #fff; }
.btn-danger   { background: var(--danger); color: #fff; }
.btn-stop     { background: var(--danger); color: #fff; font-size: 17px; }
.btn-full     { width: 100%; }
.btn-full-width { width: 100%; margin-top: 10px; }
.btn-lg       { padding: 16px 24px; font-size: 17px; }
.btn-sm       { padding: 10px 20px; font-size: 14px; }

/* ── ALERT ────────────────────────────────────────────────── */
.alert {
    border-radius: var(--radius-sm);
    padding: 10px 14px;
    font-size: 14px;
    margin-bottom: 16px;
}
.alert-error { background: #2a0a0a; border: 1px solid #5a1a1a; color: #fca5a5; }

/* ── APP LAYOUT ───────────────────────────────────────────── */
.app-body {
    display: flex;
    flex-direction: column;
    height: 100vh;
    height: 100dvh;
    overflow: hidden;
}

/* ── HEADER ───────────────────────────────────────────────── */
.app-header {
    flex-shrink: 0;
    height: var(--header-h);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    z-index: 10;
}

.header-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: .02em;
}

.header-btn {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 14px;
    color: var(--text-muted);
    padding: 8px 10px;
    border-radius: var(--radius-sm);
    background: none;
    border: none;
    cursor: pointer;
    transition: color .15s;
}
.header-btn:hover { color: var(--text); }

/* ── CENTER STAGE (no-thread) ─────────────────────────────── */
#no-thread {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.center-stage {
    text-align: center;
    max-width: 320px;
}

.brand-icon   { font-size: 56px; margin-bottom: 20px; }
.center-title { font-size: 24px; font-weight: 700; margin-bottom: 8px; }
.center-sub   { font-size: 15px; color: var(--text-muted); margin-bottom: 32px; }

/* ── ACTIVE THREAD ────────────────────────────────────────── */
#active-thread {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 0;
}

.thread-meta {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    font-size: 12px;
    color: var(--text-muted);
}

.thread-badge {
    background: #0f2a0f;
    color: var(--success);
    border: 1px solid #1a4a1a;
    border-radius: 20px;
    padding: 2px 8px;
    font-size: 11px;
    font-weight: 600;
}

/* ── MESSAGES ─────────────────────────────────────────────── */
.messages-scroll {
    flex: 1;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    padding: 12px 12px 8px;
}

.messages-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding-bottom: 8px;
}

.empty-thread {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-muted);
    font-size: 14px;
}

.message-bubble {
    background: var(--surface);
    border-radius: var(--radius);
    padding: 14px 14px 10px;
    border-left: 3px solid var(--border);
    position: relative;
}

.message-bubble.dir-eng { border-left-color: var(--eng); }
.message-bubble.dir-kan { border-left-color: var(--kan); }

.msg-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.msg-direction {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .05em;
    color: var(--text-muted);
}
.dir-eng .msg-direction { color: var(--eng); }
.dir-kan .msg-direction { color: var(--kan); }

.msg-time {
    font-size: 11px;
    color: var(--text-muted);
}

.msg-original {
    font-size: 15px;
    color: var(--text-muted);
    margin-bottom: 6px;
}

.msg-divider {
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 6px;
}

.msg-translated {
    font-size: 17px;
    font-weight: 500;
    color: var(--text);
    line-height: 1.6;
}

.btn-speak {
    position: absolute;
    bottom: 8px;
    right: 10px;
    font-size: 18px;
    background: none;
    border: none;
    cursor: pointer;
    opacity: .6;
    transition: opacity .15s;
    -webkit-tap-highlight-color: transparent;
    padding: 4px;
}
.btn-speak:hover { opacity: 1; }

/* ── BOTTOM BAR ───────────────────────────────────────────── */
.bottom-bar {
    flex-shrink: 0;
    background: var(--surface);
    border-top: 1px solid var(--border);
    padding: 12px 12px max(12px, env(safe-area-inset-bottom));
}

/* ── IDLE CONTROLS ────────────────────────────────────────── */
.idle-controls {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.btn-record {
    display: flex;
    align-items: center;
    gap: 14px;
    width: 100%;
    padding: 16px 20px;
    border-radius: var(--radius);
    border: 2px solid transparent;
    font-size: 16px;
    font-weight: 600;
    color: #fff;
    transition: transform .1s, opacity .1s;
    -webkit-tap-highlight-color: transparent;
    text-align: left;
}
.btn-record:active { transform: scale(.97); opacity: .85; }

.btn-record-eng { background: linear-gradient(135deg, #1d4ed8, #3b82f6); }
.btn-record-kan { background: linear-gradient(135deg, #7c3aed, #a855f7); }

.rec-icon   { font-size: 24px; flex-shrink: 0; }
.rec-label  { flex: 1; font-size: 16px; }
.rec-sublabel { font-size: 13px; color: rgba(255,255,255,.7); font-weight: 400; }

/* ── RECORDING UI ─────────────────────────────────────────── */
.recording-ui {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding: 8px 0;
}

.rec-indicator {
    display: flex;
    align-items: center;
    gap: 10px;
}

.rec-pulse {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--danger);
    animation: pulse 1s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50%       { opacity: .4; transform: scale(.8); }
}

.rec-lang  { font-size: 16px; font-weight: 600; color: var(--danger); }
.rec-timer { font-size: 28px; font-weight: 700; font-variant-numeric: tabular-nums; letter-spacing: .04em; }

/* ── PROCESSING UI ────────────────────────────────────────── */
.processing-ui {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding: 16px 0;
}

.spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin .7s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.processing-label {
    font-size: 15px;
    color: var(--text-muted);
}

/* ── HISTORY PAGE ─────────────────────────────────────────── */
.history-wrap {
    flex: 1;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    padding: 12px;
}

.thread-list { display: flex; flex-direction: column; gap: 8px; }

.thread-item {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}

.thread-summary {
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 16px;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
    user-select: none;
}
.thread-summary::-webkit-details-marker { display: none; }

.thread-summary-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.thread-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
}
.dot-active { background: var(--success); }
.dot-ended  { background: var(--text-muted); }

.thread-name { font-size: 14px; font-weight: 600; }
.thread-info { font-size: 12px; color: var(--text-muted); margin-top: 2px; }
.thread-chevron { color: var(--text-muted); font-size: 20px; transition: transform .2s; }
.thread-item[open] .thread-chevron { transform: rotate(90deg); }

.thread-messages-wrap {
    border-top: 1px solid var(--border);
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.thread-loading { text-align: center; color: var(--text-muted); font-size: 14px; padding: 16px; }

.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}
.empty-state p { margin-bottom: 20px; font-size: 15px; }

.empty-thread-msg { color: var(--text-muted); font-size: 13px; text-align: center; padding: 12px; }

/* ── ADMIN PANEL ──────────────────────────────────────────── */
.admin-wrap {
    flex: 1;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    padding: 12px;
}

.admin-nav {
    display: flex;
    gap: 4px;
    margin-bottom: 16px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 6px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.admin-tab {
    flex-shrink: 0;
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 600;
    color: var(--text-muted);
    transition: background .15s, color .15s;
}
.admin-tab:hover     { background: var(--surface2); color: var(--text); }
.admin-tab.active    { background: #2d1a4a; color: #a855f7; }

.admin-section {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px;
    margin-bottom: 16px;
}

.admin-section-title {
    font-size: 14px;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: .05em;
    margin-bottom: 14px;
}

.admin-note {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 10px;
}

/* Stats grid */
.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    gap: 10px;
    margin-bottom: 16px;
}

.stat-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 16px 12px;
    text-align: center;
}
.stat-card-accent { border-color: #f97316; background: #1a0a00; }

.stat-value { font-size: 22px; font-weight: 700; color: var(--text); }
.stat-label { font-size: 11px; color: var(--text-muted); margin-top: 4px; text-transform: uppercase; letter-spacing: .04em; }

/* Table */
.admin-table-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

.admin-table th {
    text-align: left;
    padding: 8px 10px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .04em;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}

.admin-table td {
    padding: 10px;
    border-bottom: 1px solid #222;
    vertical-align: middle;
}

.admin-table tr:last-child td { border-bottom: none; }
.admin-table tr:hover td      { background: #1f1f1f; }

.muted { color: var(--text-muted); font-size: 12px; }
.cost-cell { font-family: monospace; color: var(--accent); }

/* Badges */
.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
}
.badge-green  { background: #0f2a0f; color: var(--success); border: 1px solid #1a4a1a; }
.badge-grey   { background: #1a1a1a; color: var(--text-muted); border: 1px solid var(--border); }
.badge-purple { background: #1a0a2a; color: #a855f7; border: 1px solid #3d1a5a; }

/* User pill */
.user-pill {
    background: var(--surface2);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 2px 8px;
    font-size: 12px;
    font-weight: 600;
}

/* Forms in admin */
.admin-form-row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: flex-end;
}

.form-group     { display: flex; flex-direction: column; gap: 4px; flex: 1; min-width: 140px; }
.form-group-btn { flex: 0; }

.field-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M0 0l6 8 6-8z' fill='%23888'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 32px;
    cursor: pointer;
}

.field-input-sm { width: 130px; padding: 8px 10px; font-size: 13px; }

.action-row { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }
.inline-form { display: flex; gap: 4px; align-items: center; }

/* Thread detail row */
.thread-detail-wrap {
    background: var(--bg);
    border-radius: var(--radius-sm);
    padding: 12px;
    max-height: 400px;
    overflow-y: auto;
}

.alert-success {
    background: #0a2a0a;
    border: 1px solid #1a4a1a;
    color: #86efac;
    border-radius: var(--radius-sm);
    padding: 10px 14px;
    font-size: 14px;
    margin-bottom: 14px;
}