/* ClassEx Voice Assistant — Styles v3.0 */

/* ── Widget wrapper ──────────────────────────────────────────── */
.cva-widget {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
    font-size: 15px;
    max-width: 700px;
    margin: 28px auto;
    border-radius: 18px;
    overflow: hidden;
    box-shadow: 0 6px 32px rgba(0, 0, 0, 0.10);
    border: 1px solid #e0e7ef;
    background: #fff;
}

/* ── Header bar ──────────────────────────────────────────────── */
.cva-header {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px 22px;
    background: linear-gradient(135deg, #0073aa 0%, #005f8e 100%);
    color: #fff;
}

.cva-logo {
    font-size: 30px;
    line-height: 1;
}

.cva-header strong {
    display: block;
    font-size: 17px;
    font-weight: 700;
    letter-spacing: 0.01em;
}

.cva-header p {
    margin: 2px 0 0;
    font-size: 13px;
    opacity: 0.85;
}

/* ── Chat area ───────────────────────────────────────────────── */
.cva-chat {
    min-height: 200px;
    max-height: 400px;
    overflow-y: auto;
    padding: 20px 18px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    background: #f5f8fb;
    scroll-behavior: smooth;
}

/* ── Messages ────────────────────────────────────────────────── */
.cva-msg {
    display: flex;
    max-width: 85%;
    animation: cva-pop 0.22s ease;
}

.cva-msg.cva-user {
    align-self: flex-end;
    flex-direction: row-reverse;
}

.cva-msg.cva-ai {
    align-self: flex-start;
}

.cva-bubble {
    display: inline-block;
    padding: 11px 16px;
    border-radius: 16px;
    line-height: 1.6;
    word-break: break-word;
}

.cva-msg.cva-ai .cva-bubble {
    background: #fff;
    border: 1px solid #dce5ef;
    border-bottom-left-radius: 4px;
    color: #1e293b;
    box-shadow: 0 1px 3px rgba(0,0,0,0.06);
}

.cva-msg.cva-user .cva-bubble {
    background: #0073aa;
    color: #fff;
    border-bottom-right-radius: 4px;
}

/* Grammar-specific labels */
.cva-label-wrong { color: #dc2626; font-weight: 600; }
.cva-label-right  { color: #16a34a; font-weight: 600; }
.cva-explain      { display: block; margin-top: 6px; font-style: italic; color: #475569; font-size: 13px; }

/* ── Toolbar ─────────────────────────────────────────────────── */
.cva-toolbar {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 18px;
    background: #fff;
    border-top: 1px solid #e0e7ef;
}

/* ── Buttons ─────────────────────────────────────────────────── */
.cva-btn {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 9px 20px;
    border: none;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: background 0.18s, transform 0.1s, opacity 0.18s;
    line-height: 1.4;
}

.cva-btn:active  { transform: scale(0.96); }
.cva-btn:disabled { opacity: 0.55; cursor: not-allowed; transform: none; }

/* Speak */
.cva-speak-btn {
    background: #0073aa;
    color: #fff;
    min-width: 110px;
    justify-content: center;
}
.cva-speak-btn:hover:not(:disabled) { background: #005f8e; }

/* Clear */
.cva-clear-btn {
    background: transparent;
    color: #64748b;
    border: 1px solid #cbd5e1;
    padding: 8px 14px;
}
.cva-clear-btn:hover { background: #f1f5f9; color: #1e293b; }

/* CTA */
.cva-cta-btn {
    background: #f59e0b;
    color: #1e293b;
    margin-top: 6px;
}
.cva-cta-btn:hover { background: #d97706; color: #fff; }

/* ── Status line ─────────────────────────────────────────────── */
.cva-status {
    font-size: 13px;
    font-style: italic;
    color: #64748b;
    flex: 1;
}

.cva-listening { color: #16a34a; font-weight: 700; font-style: normal; }
.cva-thinking  { color: #0073aa; font-weight: 700; font-style: normal; }
.cva-error     { color: #dc2626; font-weight: 700; font-style: normal; }

/* ── CTA box ─────────────────────────────────────────────────── */
.cva-cta {
    text-align: center;
    padding: 14px 20px 18px;
    background: #fffbeb;
    border-top: 1px solid #fde68a;
}

.cva-cta p {
    margin: 0 0 8px;
    font-size: 13px;
    color: #92400e;
    font-weight: 500;
}

/* ── Browser warning ─────────────────────────────────────────── */
.cva-browser-warn {
    margin: 16px 18px;
    padding: 12px 16px;
    background: #fef2f2;
    border: 1px solid #fecaca;
    border-radius: 10px;
    color: #7f1d1d;
    font-size: 14px;
    line-height: 1.6;
}

/* ── Animation ───────────────────────────────────────────────── */
@keyframes cva-pop {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ── Responsive ──────────────────────────────────────────────── */
@media (max-width: 520px) {
    .cva-widget  { margin: 12px; border-radius: 14px; }
    .cva-bubble  { font-size: 14px; padding: 9px 13px; }
    .cva-speak-btn { min-width: 90px; padding: 8px 14px; }
    .cva-header strong { font-size: 15px; }
}

/* ── Usage counter bar ───────────────────────────────────────── */
.cva-usage-bar {
    padding: 8px 18px;
    background: #f0f7ff;
    border-bottom: 1px solid #dce8f5;
    text-align: center;
}

.cva-usage-counter {
    font-size: 13px;
    color: #334155;
}

.cva-usage-counter.cva-limit-hit {
    color: #dc2626;
    font-weight: 700;
}

/* ── Upgrade box ─────────────────────────────────────────────── */
.cva-upgrade-box {
    text-align: center;
    padding: 20px 24px 22px;
    background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
    border-top: 3px solid #f59e0b;
}

.cva-upgrade-box p {
    margin: 0 0 8px;
    color: #e2e8f0;
    font-size: 14px;
    line-height: 1.6;
}

.cva-upgrade-box p:first-child {
    font-size: 16px;
    color: #fbbf24;
    font-weight: 700;
    margin-bottom: 6px;
}

.cva-btn-upgrade {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: #1e293b !important;
    font-size: 15px;
    padding: 11px 28px;
    margin: 6px 0 10px;
    box-shadow: 0 3px 12px rgba(245, 158, 11, 0.4);
}

.cva-btn-upgrade:hover {
    background: linear-gradient(135deg, #fbbf24, #f59e0b);
    transform: translateY(-1px);
    box-shadow: 0 5px 16px rgba(245, 158, 11, 0.5);
}

.cva-reset-note {
    font-size: 12px !important;
    color: #94a3b8 !important;
    margin-top: 6px !important;
    font-style: italic;
}

/* ── Ko-fi donation button ───────────────────────────────────── */
.cva-kofi-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: #FF5E5B;
    color: #ffffff !important;
    font-size: 14px;
    font-weight: 700;
    padding: 12px 24px;
    border-radius: 999px;
    text-decoration: none !important;
    margin: 8px 0 4px;
    box-shadow: 0 3px 12px rgba(255, 94, 91, 0.35);
    transition: background 0.2s, transform 0.15s, box-shadow 0.2s;
    white-space: normal;
    text-align: center;
    line-height: 1.4;
}

.cva-kofi-btn:hover {
    background: #e04e4b;
    transform: translateY(-2px);
    box-shadow: 0 5px 18px rgba(255, 94, 91, 0.45);
    color: #ffffff !important;
}

.cva-kofi-btn:active {
    transform: scale(0.97);
}

/* Upgrade box adjusted for Ko-fi */
.cva-upgrade-box {
    text-align: center;
    padding: 20px 24px 22px;
    background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
    border-top: 3px solid #FF5E5B;
}

.cva-upgrade-box p:first-child {
    color: #FF5E5B;
}

/* ── Global cap box ──────────────────────────────────────────── */
.cva-cap-box {
    text-align: center;
    padding: 22px 24px;
    background: linear-gradient(135deg, #1e3a5f 0%, #0f2440 100%);
    border-top: 3px solid #f59e0b;
}

.cva-cap-title {
    font-size: 16px;
    font-weight: 700;
    color: #fbbf24;
    margin: 0 0 8px;
}

.cva-cap-sub {
    font-size: 13px;
    color: #cbd5e1;
    margin: 0 0 14px;
    line-height: 1.6;
}

/* ── Waitlist form ───────────────────────────────────────────── */
.cva-waitlist-form {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.cva-waitlist-label {
    font-size: 13px;
    color: #e2e8f0;
    margin: 0 0 10px;
    font-weight: 500;
}

.cva-waitlist-row {
    display: flex;
    gap: 8px;
    justify-content: center;
    flex-wrap: wrap;
}

.cva-email-input {
    flex: 1;
    min-width: 200px;
    max-width: 300px;
    padding: 9px 14px;
    border: 1px solid #475569;
    border-radius: 999px;
    background: #1e293b;
    color: #f1f5f9;
    font-size: 14px;
    outline: none;
    transition: border-color 0.2s;
}

.cva-email-input:focus {
    border-color: #f59e0b;
}

.cva-email-input::placeholder {
    color: #64748b;
}

.cva-notify-btn {
    background: #f59e0b;
    color: #1e293b;
    font-weight: 700;
    padding: 9px 20px;
    border-radius: 999px;
    font-size: 14px;
    white-space: nowrap;
}

.cva-notify-btn:hover {
    background: #fbbf24;
}

.cva-waitlist-msg {
    font-size: 13px;
    margin: 10px 0 0;
    font-weight: 500;
}