/* === SOLUTIONS.CSS === */
/* assets/css/solutions.css */
/* НАЗНАЧЕНИЕ: блок "Задачи и решения" - 6 карточек problem -> solution -> result */
/* РАЗМЕР: ~280 строк */

.brain-solutions {
    padding: 100px 0;
    position: relative;
}

.brain-solutions .brain-section-eyebrow {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--gold);
    padding: 6px 14px;
    border: 1px solid rgba(255, 215, 0, 0.3);
    border-radius: 999px;
    background: rgba(255, 215, 0, 0.04);
    margin-bottom: 20px;
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 60px;
}

@media (max-width: 1024px) {
    .solutions-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
}

@media (max-width: 640px) {
    .solutions-grid { grid-template-columns: 1fr; gap: 16px; }
    .brain-solutions { padding: 60px 0; }
}

.solution-card {
    position: relative;
    padding: 28px 24px;
    border-radius: 18px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.025), rgba(255, 255, 255, 0.012));
    border: 1px solid var(--border);
    transition: transform 0.4s var(--ease-out-quart), border-color 0.3s ease, box-shadow 0.4s ease;
    opacity: 0;
    transform: translateY(20px);
    animation: solution-reveal 0.7s var(--ease-out-quart) forwards;
    animation-delay: var(--solution-delay, 0s);
    overflow: hidden;
}

.solution-card::before {
    content: "";
    position: absolute;
    top: -50%;
    right: -30%;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(255, 215, 0, 0.08), transparent 70%);
    filter: blur(40px);
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.5s ease;
}

.solution-card--electric::before {
    background: radial-gradient(circle, rgba(0, 240, 255, 0.08), transparent 70%);
}

.solution-card:hover {
    transform: translateY(-6px);
    border-color: rgba(255, 215, 0, 0.4);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3), inset 0 0 24px rgba(255, 215, 0, 0.03);
}

.solution-card--electric:hover {
    border-color: rgba(0, 240, 255, 0.4);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3), inset 0 0 24px rgba(0, 240, 255, 0.03);
}

.solution-card:hover::before { opacity: 1; }

@keyframes solution-reveal {
    to { opacity: 1; transform: translateY(0); }
}

.solution-card__icon {
    font-size: 36px;
    line-height: 1;
    margin-bottom: 18px;
    filter: drop-shadow(0 4px 12px rgba(255, 215, 0, 0.25));
}

.solution-card--electric .solution-card__icon {
    filter: drop-shadow(0 4px 12px rgba(0, 240, 255, 0.25));
}

.solution-card__label {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    padding: 3px 8px;
    border-radius: 4px;
    margin-bottom: 8px;
}

.solution-card__label--problem {
    color: #ef4444;
    background: rgba(239, 68, 68, 0.10);
    border: 1px solid rgba(239, 68, 68, 0.25);
}

.solution-card__label--solution {
    color: var(--gold);
    background: rgba(255, 215, 0, 0.10);
    border: 1px solid rgba(255, 215, 0, 0.25);
}

.solution-card--electric .solution-card__label--solution {
    color: var(--electric);
    background: rgba(0, 240, 255, 0.10);
    border: 1px solid rgba(0, 240, 255, 0.25);
}

.solution-card__problem {
    margin-bottom: 14px;
}

.solution-card__problem-text {
    font-family: var(--font-display);
    font-size: 17px;
    font-weight: 600;
    line-height: 1.4;
    color: var(--text-primary);
    margin: 0;
}

.solution-card__arrow {
    display: flex;
    justify-content: center;
    margin: 12px 0;
    color: rgba(255, 215, 0, 0.45);
    animation: arrow-pulse 2.5s ease-in-out infinite;
}

.solution-card--electric .solution-card__arrow {
    color: rgba(0, 240, 255, 0.45);
}

@keyframes arrow-pulse {
    0%, 100% { transform: translateY(0); opacity: 0.45; }
    50% { transform: translateY(3px); opacity: 0.8; }
}

.solution-card__solution-text {
    font-size: 14px;
    line-height: 1.55;
    color: var(--text-secondary);
    margin: 0 0 16px 0;
}

.solution-card__result {
    padding-top: 14px;
    border-top: 1px solid var(--border);
}

.solution-card__result-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 600;
    color: #10b981;
    background: rgba(16, 185, 129, 0.10);
    border: 1px solid rgba(16, 185, 129, 0.25);
    padding: 5px 10px;
    border-radius: 999px;
}

.solution-card__result-badge svg {
    flex-shrink: 0;
}

/* Light theme */
html.light-theme .solution-card {
    background: linear-gradient(180deg, rgba(0, 0, 0, 0.02), rgba(0, 0, 0, 0.008));
    border-color: rgba(0, 0, 0, 0.12);
}

html.light-theme .solution-card:hover {
    border-color: rgba(184, 134, 11, 0.5);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.08);
}

html.light-theme .brain-solutions .brain-section-eyebrow {
    color: #b8860b;
    border-color: rgba(184, 134, 11, 0.4);
    background: rgba(184, 134, 11, 0.06);
}

html.light-theme .solution-card__problem-text {
    color: #1a1a1a;
}

html.light-theme .solution-card__solution-text {
    color: #4a4a4a;
}

html.light-theme .solution-card__label--solution {
    color: #b8860b;
}

html.light-theme .solution-card--electric .solution-card__label--solution {
    color: #0e7490;
}

html.light-theme .solution-card__arrow {
    color: rgba(184, 134, 11, 0.5);
}

html.light-theme .solution-card--electric .solution-card__arrow {
    color: rgba(14, 116, 144, 0.5);
}

@media (prefers-reduced-motion: reduce) {
    .solution-card { animation: none; opacity: 1; transform: none; }
    .solution-card__arrow { animation: none; }
}