/* Telegram section. Uses site tokens (--ui-*) and respects reduced motion and the light theme. */

.tg-hero {
    position: relative;
    overflow: hidden;
    display: grid;
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.6fr);
    gap: 2rem;
    padding: clamp(1.5rem, 4vw, 3rem);
    border-radius: var(--ui-radius-card);
    isolation: isolate;
}

.tg-copy {
    min-width: 0;
}

/* Animated gradient border */
.tg-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    padding: 1.5px;
    border-radius: inherit;
    background: conic-gradient(from var(--tg-angle, 0deg), #22d3ee, #6366f1, #a855f7, #22d3ee);
    -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
    -webkit-mask-composite: xor;
    mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
    mask-composite: exclude;
    opacity: 0.7;
    animation: tg-spin 8s linear infinite;
    pointer-events: none;
    z-index: -1;
}

@property --tg-angle {
    syntax: "<angle>";
    inherits: false;
    initial-value: 0deg;
}

@keyframes tg-spin {
    to { --tg-angle: 360deg; }
}

.tg-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.35rem 0.8rem;
    border-radius: var(--ui-radius-pill);
    background: rgba(34, 211, 238, 0.1);
    border: 1px solid rgba(34, 211, 238, 0.3);
    color: #a5f3fc;
    font: 500 0.75rem/1 "JetBrains Mono", ui-monospace, monospace;
}

.tg-pulse {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #22d3ee;
    box-shadow: 0 0 0 0 rgba(34, 211, 238, 0.7);
    animation: tg-pulse 2s infinite;
}

@keyframes tg-pulse {
    70% { box-shadow: 0 0 0 10px rgba(34, 211, 238, 0); }
    100% { box-shadow: 0 0 0 0 rgba(34, 211, 238, 0); }
}

.tg-title {
    margin: 1rem 0 0.75rem;
    font-size: clamp(1.75rem, 4.5vw, 3rem);
    line-height: 1.1;
    background: linear-gradient(90deg, #fff, #a5f3fc 60%, #c4b5fd);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.tg-lead {
    max-width: 38rem;
    color: #cbd5e1;
    line-height: 1.7;
}

.tg-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 1.5rem;
}

.tg-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    min-height: 44px;
    padding: 0.7rem 1.4rem;
    border-radius: 0.75rem;
    font-weight: 700;
    color: #04121a;
    background: linear-gradient(135deg, #22d3ee, #818cf8);
    box-shadow: 0 10px 30px -10px rgba(34, 211, 238, 0.6);
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.tg-cta:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 16px 40px -10px rgba(129, 140, 248, 0.7);
}

.tg-cta svg { width: 1.25rem; height: 1.25rem; }

/* Orbit visual */
.tg-orbit {
    position: relative;
    display: grid;
    place-items: center;
    min-height: 240px;
}

.tg-ring {
    position: absolute;
    border: 1px dashed rgba(165, 243, 252, 0.25);
    border-radius: 50%;
    animation: tg-rotate 24s linear infinite;
}

.tg-ring:nth-child(1) { width: 220px; height: 220px; }
.tg-ring:nth-child(2) { width: 150px; height: 150px; animation-direction: reverse; animation-duration: 16s; }

.tg-ring::after {
    content: "";
    position: absolute;
    top: -5px;
    left: 50%;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #22d3ee;
    box-shadow: 0 0 14px #22d3ee;
}

.tg-plane {
    width: 84px;
    height: 84px;
    animation: tg-float 4s ease-in-out infinite;
    filter: drop-shadow(0 12px 24px rgba(34, 211, 238, 0.45));
}

@keyframes tg-rotate { to { transform: rotate(360deg); } }
@keyframes tg-float {
    0%, 100% { transform: translateY(0) rotate(-4deg); }
    50% { transform: translateY(-12px) rotate(4deg); }
}

/* Topic chips marquee */
.tg-marquee {
    overflow: hidden;
    margin-top: 1.75rem;
    mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
    -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}

.tg-marquee-track {
    display: flex;
    width: max-content;
    gap: 0.6rem;
    animation: tg-marquee 28s linear infinite;
}

.tg-marquee:hover .tg-marquee-track { animation-play-state: paused; }
@keyframes tg-marquee { to { transform: translateX(-50%); } }

/* Feed */
.tg-feed {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.1rem;
}

.tg-card {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    padding: 1.25rem;
    border-radius: 18px;
    border: 1px solid var(--ui-border);
    background: var(--ui-surface);
    backdrop-filter: blur(10px);
    transition: transform 0.3s ease, border-color 0.3s ease, background 0.3s ease;
    opacity: 0;
    transform: translateY(14px);
    animation: tg-rise 0.6s ease forwards;
    animation-delay: calc(var(--i, 0) * 90ms);
}

.tg-card:hover {
    transform: translateY(-4px);
    border-color: rgba(34, 211, 238, 0.45);
    background: var(--ui-surface-hover);
}

@keyframes tg-rise { to { opacity: 1; transform: translateY(0); } }

.tg-card-meta {
    display: flex;
    justify-content: space-between;
    font: 400 0.7rem/1 "JetBrains Mono", ui-monospace, monospace;
    color: #94a3b8;
}

.tg-card-text {
    flex: 1;
    color: #e2e8f0;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 6;
    line-clamp: 6;
    -webkit-box-orient: vertical;
    overflow: hidden;
    white-space: pre-line;
}

.tg-card-link {
    font-size: 0.8rem;
    font-weight: 600;
    color: #67e8f9;
}

.tg-card-link::after { content: " \2192"; transition: margin 0.2s; }
.tg-card:hover .tg-card-link::after { margin-left: 4px; }

.tg-card--topic .tg-card-icon {
    font-size: 1.6rem;
}

[data-theme="light"] .tg-lead,
[data-theme="light"] .tg-card-text { color: #334155; }
[data-theme="light"] .tg-card-meta { color: #64748b; }
[data-theme="light"] .tg-badge { color: #0e7490; }
[data-theme="light"] .tg-card-link { color: #0e7490; }

@media (max-width: 820px) {
    .tg-hero { grid-template-columns: 1fr; }
    .tg-orbit { min-height: 180px; order: -1; }
}

@media (prefers-reduced-motion: reduce) {
    .tg-hero::before,
    .tg-pulse,
    .tg-ring,
    .tg-plane,
    .tg-marquee-track { animation: none; }
    .tg-card { animation: none; opacity: 1; transform: none; }
}