/**
 * ST landings — DARK ABOUT component (dark section with chat mockup + about cards).
 * Selectors: .st-about*, .st-chat-mockup, .st-chat-*.
 * Chat mockup is a sub-template of dark-about (only used here so far).
 */

.st-about {
    padding: 110px 24px;
    background: linear-gradient(160deg, #2D2119 0%, #3A2E28 50%, #2D2420 100%);
    color: #fff;
    position: relative;
    overflow: hidden;
}

.st-about-orb {
    position: absolute;
    top: -100px;
    right: -100px;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(var(--st-primary-rgb), 0.15) 0%, transparent 60%);
    border-radius: 50%;
    pointer-events: none;
}

.st-about-inner {
    max-width: 1100px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 64px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.st-about-label {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--st-primary-light);
    margin-bottom: 16px;
}

.st-about h2 {
    font-size: clamp(28px, 3.5vw, 40px);
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin-bottom: 24px;
}

.st-about h2 em {
    font-style: normal;
    background: linear-gradient(135deg, var(--st-primary-light) 0%, var(--st-accent) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.st-about-text {
    font-size: 17px;
    color: rgba(255, 255, 255, 0.78);
    line-height: 1.8;
    margin-bottom: 24px;
}

.st-about-highlight {
    background: rgba(var(--st-primary-rgb), 0.12);
    border-left: 3px solid var(--st-primary-light);
    padding: 20px 24px;
    border-radius: 0 16px 16px 0;
    font-size: 16px;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.7;
    margin-top: 32px;
}

.st-about-cards {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.st-about-card {
    background: rgba(255, 255, 255, 0.06);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 28px;
    transition: all 0.3s ease;
}

.st-about-card:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.st-about-card-title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.st-about-card-title svg {
    width: 22px;
    height: 22px;
    color: var(--st-primary-light);
    flex-shrink: 0;
}

.st-about-card p {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.68);
    line-height: 1.6;
}

/* Chat mockup — sub-template rendered inside dark-about */
.st-chat-mockup {
    background: rgba(255, 255, 255, 0.06);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 24px;
    padding: 26px;
    display: flex;
    flex-direction: column;
    gap: 14px;
    margin-bottom: 20px;
}

.st-chat-header {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 4px;
}

.st-chat-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #22C55E;
    box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.2);
    animation: st-pulse-glow 2s ease-in-out infinite;
}

.st-chat-msg {
    display: flex;
    flex-direction: column;
    gap: 4px;
    max-width: 92%;
}

.st-chat-msg strong {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: rgba(255, 255, 255, 0.55);
}

.st-chat-msg p {
    font-size: 14px;
    line-height: 1.55;
    padding: 12px 16px;
    border-radius: 16px;
    margin: 0;
}

.st-chat-msg--aura {
    align-self: flex-start;
}

.st-chat-msg--aura p {
    background: rgba(var(--st-primary-rgb), 0.22);
    color: rgba(255, 255, 255, 0.96);
    border-bottom-left-radius: 4px;
}

.st-chat-msg--user {
    align-self: flex-end;
    align-items: flex-end;
}

.st-chat-msg--user p {
    background: rgba(255, 255, 255, 0.14);
    color: rgba(255, 255, 255, 0.94);
    border-bottom-right-radius: 4px;
}

@media (max-width: 1024px) {
    .st-about-inner {
        grid-template-columns: 1fr;
        gap: 48px;
    }
}

@media (max-width: 768px) {
    .st-about h2 {
        font-size: 26px;
    }

    .st-about-orb {
        display: none;
    }

    .st-chat-mockup {
        padding: 20px;
    }

    .st-chat-msg p {
        font-size: 13px;
        padding: 10px 14px;
    }
}

@media (max-width: 480px) {
    .st-about-card {
        padding: 24px 20px;
    }
}