/* ============================================
   KINAS VOLT — Solar Energy Division
   ============================================ */
@keyframes fadeInUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

.hero { min-height: 100vh; padding-top: 120px; padding-bottom: 100px; }
.hero-label { animation: fadeIn 0.6s ease 0.2s both; }
.hero h1 { animation: fadeInUp 0.7s ease 0.3s both; }
.hero-text { animation: fadeInUp 0.7s ease 0.5s both; }
.hero-buttons { animation: fadeInUp 0.7s ease 0.7s both; }
.hero-buttons .btn { min-width: 220px; justify-content: center; color: #FFF !important; }
.hero-buttons .btn-secondary { border-color: var(--secondary); }
.hero-buttons .btn-secondary:hover { background: var(--secondary); }

/* Calculator appliance grid */
.calc-appliance-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 10px; }
.calc-appliance-item { background: rgba(255,255,255,0.02); border: 1px solid var(--border-color); border-radius: var(--radius-sm); padding: 12px; transition: border-color 0.2s; }
.calc-appliance-item:has(input:checked) { border-color: var(--accent); background: rgba(76,175,80,0.05); }

@media (max-width: 768px) {
    .hero { min-height: auto !important; padding-top: 72px !important; padding-bottom: 32px !important; }
    .hero h1 { font-size: 1.5rem !important; margin-bottom: 12px !important; }
    .hero-text { font-size: 0.88rem; margin-bottom: 20px; }
    .hero-buttons .btn { min-width: unset; padding: 12px 24px; font-size: 0.85rem; width: 100%; }
    .calc-appliance-grid { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
    .hero { padding-top: 68px !important; padding-bottom: 24px !important; }
    .hero h1 { font-size: 1.35rem !important; }
}