:root {
    --bg: #0a0b14;
    --bg-2: #0e1019;
    --card: #12141f;
    --card-2: #161927;
    --border: rgba(255, 255, 255, 0.08);
    --border-strong: rgba(255, 255, 255, 0.16);
    --text: #e6e8ef;
    --muted: #8a90a6;
    --cyan: #00d4ff;
    --green: #00ff88;
    --danger-bg: rgba(220, 53, 69, 0.12);
    --danger: #ff7b8a;
    --ok-bg: rgba(0, 255, 136, 0.08);
    --radius: 14px;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background:
        radial-gradient(1200px 600px at 80% -10%, rgba(0, 212, 255, 0.10), transparent 60%),
        radial-gradient(1000px 500px at -10% 10%, rgba(0, 255, 136, 0.08), transparent 55%),
        var(--bg);
    color: var(--text);
    min-height: 100vh;
    font-size: 16px;
    line-height: 1.6;
}

a { color: var(--cyan); text-decoration: none; }
a:hover { color: var(--green); }

/* Navbar */
.t-navbar {
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(12px);
    background: rgba(10, 11, 20, 0.8);
    border-bottom: 1px solid var(--border);
}
.t-nav-inner {
    max-width: 1080px;
    margin: 0 auto;
    padding: 14px 20px;
    display: flex;
    align-items: center;
    gap: 18px;
}
.t-logo { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.05rem; color: var(--text); }
.t-logo .dot {
    width: 26px; height: 26px; border-radius: 7px;
    background: linear-gradient(135deg, var(--cyan), var(--green));
    display: inline-flex; align-items: center; justify-content: center;
    color: #001018; font-size: 13px;
}
.t-nav-links { display: flex; gap: 6px; margin-left: auto; flex-wrap: wrap; }
.t-nav-links a {
    color: var(--muted);
    padding: 8px 14px;
    border-radius: 9px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.15s ease;
}
.t-nav-links a:hover { color: var(--text); background: var(--card); }
.t-nav-links a.active {
    color: #001018;
    background: linear-gradient(135deg, var(--cyan), var(--green));
    font-weight: 600;
}

/* Layout */
.t-container {
    max-width: 860px;
    margin: 0 auto;
    padding: 44px 20px 80px;
}
.t-header { margin-bottom: 26px; }
.t-eyebrow {
    display: inline-block;
    font-size: 0.78rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--cyan);
    border: 1px solid var(--border-strong);
    border-radius: 999px;
    padding: 5px 12px;
    margin-bottom: 14px;
}
.t-title { font-size: 2.5rem; font-weight: 800; margin: 0 0 10px; letter-spacing: -0.02em; }
.t-title .grad {
    background: linear-gradient(135deg, var(--cyan), var(--green));
    -webkit-background-clip: text; background-clip: text; color: transparent;
}
.t-subtitle { color: var(--muted); margin: 0; font-size: 1.1rem; line-height: 1.6; }

/* Card / form */
.t-card {
    background: linear-gradient(180deg, var(--card-2), var(--card));
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 22px;
    box-shadow: 0 20px 50px -30px rgba(0, 0, 0, 0.8);
}
label { display: block; font-size: 0.95rem; color: var(--muted); margin: 16px 0 7px; font-weight: 500; }
label:first-child { margin-top: 0; }

input[type=text], input[type=email], input[type=password], select, textarea {
    width: 100%;
    padding: 14px 15px;
    font-size: 1.05rem;
    color: var(--text);
    background: var(--bg-2);
    border: 1px solid var(--border-strong);
    border-radius: 10px;
    outline: none;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
    font-family: inherit;
}
input[type=text]:focus, input[type=email]:focus, input[type=password]:focus, select:focus, textarea:focus {
    border-color: var(--cyan);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.15);
}
textarea { min-height: 150px; resize: vertical; }
select { appearance: none; cursor: pointer; }

button, .t-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 18px;
    padding: 13px 24px;
    font-size: 1.05rem;
    font-weight: 600;
    color: #001018;
    background: linear-gradient(135deg, var(--cyan), var(--green));
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: transform 0.12s ease, filter 0.15s ease;
    font-family: inherit;
}
button:hover, .t-btn:hover { filter: brightness(1.08); transform: translateY(-1px); }
button:disabled { opacity: 0.6; cursor: default; transform: none; }

.btn-ghost {
    background: transparent;
    color: var(--muted);
    border: 1px solid var(--border-strong);
}
.btn-ghost:hover { color: var(--text); filter: none; }
.btn-danger { background: var(--danger-bg); color: var(--danger); border: 1px solid rgba(255, 123, 138, 0.3); }
.btn-danger:hover { filter: brightness(1.1); }

.t-toolbar { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 18px; flex-wrap: wrap; }
.t-toolbar form { margin: 0; }
.t-toolbar button { margin-top: 0; }

/* Result blocks */
.result { margin-top: 22px; }
.result.yes, .summary-card, .image-card { 
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px;
}
.result.no, .no {
    margin-top: 22px;
    background: var(--danger-bg);
    border: 1px solid rgba(255, 123, 138, 0.3);
    color: var(--danger);
    padding: 14px 16px;
    border-radius: 10px;
}
.meta { font-size: 0.92rem; color: var(--muted); margin-bottom: 8px; }
.meta code { background: var(--bg-2); padding: 2px 7px; border-radius: 5px; color: var(--cyan); }
.meta strong { color: var(--text); }
.bandwidth { font-size: 0.9rem; color: var(--muted); margin: 6px 0; }

pre {
    white-space: pre-wrap;
    word-wrap: break-word;
    background: var(--bg-2);
    border: 1px solid var(--border);
    padding: 16px;
    border-radius: 10px;
    max-height: 460px;
    overflow-y: auto;
    font-size: 0.98rem;
    line-height: 1.7;
    color: #cfd3e1;
}
details { margin-top: 14px; }
summary { cursor: pointer; font-weight: 600; color: var(--text); }

.copy-btn {
    float: right;
    margin: 0 0 8px 8px;
    padding: 7px 14px;
    font-size: 0.8rem;
}

/* Summary card */
.summary-card h3 { margin: 0 0 12px; font-size: 1.4rem; }
.summary-card h3.grad,
.summary-card .result h3 {
    background: linear-gradient(135deg, var(--cyan), var(--green));
    -webkit-background-clip: text; background-clip: text; color: transparent;
}
.summary-card p { margin: 8px 0; }
.summary-card ul, .summary-card ol { margin: 10px 0; padding-left: 22px; }
.summary-card li { margin-bottom: 8px; }
.summary-card strong { color: var(--cyan); }

/* Image card */
.image-card img {
    width: 100%;
    border-radius: 10px;
    display: block;
    margin-bottom: 12px;
    border: 1px solid var(--border);
}

/* Search results */
.video-card {
    display: flex;
    gap: 14px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 12px;
    margin-bottom: 12px;
    align-items: flex-start;
    transition: border-color 0.15s ease, transform 0.12s ease;
}
.video-card:hover { border-color: var(--border-strong); transform: translateY(-1px); }
.video-card img { width: 140px; height: 100px; object-fit: cover; border-radius: 8px; flex-shrink: 0; }
.video-card .info { flex: 1; }
.video-card .title { font-weight: 600; font-size: 1.1rem; margin-bottom: 5px; color: var(--text); }
.video-card .meta { font-size: 0.9rem; color: var(--muted); margin: 0; }
.t-result-form { margin: 0; padding: 0; }
.t-result-form button {
    background: none; border: none; padding: 0; margin: 0;
    cursor: pointer; width: 100%; text-align: left; color: inherit;
}
.t-result-form button:hover { transform: none; filter: none; }

/* Chat */
.chat-window {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 16px;
}
.chat-msg { max-width: 85%; padding: 13px 16px; border-radius: 14px; font-size: 1.02rem; }
.chat-msg.user {
    align-self: flex-end;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.18), rgba(0, 255, 136, 0.14));
    border: 1px solid rgba(0, 212, 255, 0.25);
    color: var(--text);
    border-bottom-right-radius: 4px;
}
.chat-msg.assistant {
    align-self: flex-start;
    background: var(--card);
    border: 1px solid var(--border);
    border-bottom-left-radius: 4px;
}
.chat-msg p { margin: 0; }

.processing {
    margin-top: 22px;
    padding: 20px;
    text-align: center;
    color: var(--muted);
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}
.spinner {
    width: 22px; height: 22px;
    border: 3px solid var(--border-strong);
    border-top-color: var(--cyan);
    border-radius: 50%;
    margin: 0 auto 10px;
    animation: t-spin 0.8s linear infinite;
}
@keyframes t-spin { to { transform: rotate(360deg); } }

.hint { font-size: 0.9rem; color: var(--muted); margin-top: 8px; }

/* Auth: divider + Google button */
.t-divider {
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 18px 0;
    color: var(--muted);
    font-size: 0.85rem;
}
.t-divider::before, .t-divider::after {
    content: "";
    flex: 1;
    height: 1px;
    background: var(--border);
}
.google-btn {
    width: 100%;
    justify-content: center;
    margin-top: 0;
    background: #ffffff;
    color: #1f2430;
    border: 1px solid var(--border-strong);
    font-weight: 600;
}
.google-btn:hover { filter: brightness(0.96); }
.google-btn svg { flex-shrink: 0; }