/* ===== HERO SECTION ===== */
.hero-main {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding-top: 100px;
    background: linear-gradient(180deg, var(--bg-body) 0%, var(--bg-surface) 100%);
    position: relative;
    overflow: hidden;
}

.hero-main::before {
    content: '';
    position: absolute;
    top: -200px;
    right: -200px;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(16, 185, 129, 0.15), transparent 60%);
    border-radius: 50%;
    pointer-events: none;
}

.hero-main::after {
    content: '';
    position: absolute;
    bottom: -100px;
    left: -100px;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.1), transparent 60%);
    border-radius: 50%;
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: var(--primary);
    padding: 8px 16px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 24px;
}

.hero-title {
    font-size: clamp(2.2rem, 5vw, 3.5rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 20px;
}

.hero-title span {
    color: var(--primary);
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 40px;
    line-height: 1.7;
    text-align: center;
}

/* ===== CALCULATOR SECTION ===== */
.calc-section {
    padding: 80px 0;
    background: var(--bg-surface);
    position: relative;
    z-index: 1;
}

.calc-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    max-width: 1100px;
    margin: 0 auto;
}

@media (max-width: 850px) {
    .calc-layout { grid-template-columns: 1fr; }
}

.calc-card {
    background: var(--bg-body);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 32px;
}

.calc-card h2 {
    font-size: 1.3rem;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.calc-card h2 i { color: var(--primary); }

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.form-group select,
.form-group input[type="number"],
.form-group input[type="text"] {
    width: 100%;
    padding: 14px 16px;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.95rem;
    transition: var(--transition);
}

.form-group select:focus,
.form-group input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow);
}

/* Searchable Dropdown */
.searchable-dropdown { position: relative; width: 100%; }
.selected-option {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    padding: 14px 16px;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    color: var(--text-primary);
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition);
}
.selected-option.open { border-color: var(--primary); }
.dropdown-content {
    display: none;
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    width: 100%;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    box-shadow: 0 15px 40px rgba(0,0,0,0.4);
    z-index: 100;
    max-height: 400px;
    overflow: hidden;
    flex-direction: column;
}
.dropdown-content.show { display: flex; }
.search-wrap {
    padding: 12px;
    border-bottom: 1px solid var(--border);
    position: relative;
}
.search-wrap input {
    width: 100%;
    padding: 12px 40px 12px 14px;
    background: var(--bg-body);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 0.9rem;
}
.search-wrap i {
    position: absolute;
    right: 24px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
}
.dropdown-list { list-style: none; padding: 0; margin: 0; overflow-y: auto; max-height: 320px; }
.group-label {
    padding: 10px 16px;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--primary);
    background: rgba(16, 185, 129, 0.08);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.dropdown-item {
    padding: 12px 16px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: var(--transition);
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.dropdown-item:hover { background: rgba(16, 185, 129, 0.1); color: var(--primary); }
.ac-badge {
    font-size: 0.7rem;
    background: rgba(16, 185, 129, 0.1);
    color: var(--primary);
    padding: 3px 10px;
    border-radius: 6px;
    font-weight: 600;
}

/* Radio Group */
.radio-group { display: flex; gap: 12px; flex-wrap: wrap; }
.radio-option { flex: 1; min-width: 100px; }
.radio-option input[type="radio"] { display: none; }
.radio-option label {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 16px 12px;
    background: var(--bg-surface);
    border: 2px solid var(--border);
    border-radius: 12px;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
}
.radio-option input:checked + label {
    border-color: var(--primary);
    background: rgba(16, 185, 129, 0.08);
}
.radio-option label span:first-child { font-weight: 700; font-size: 1rem; }
.radio-option label span:last-child { font-size: 0.75rem; color: var(--text-secondary); }

.calc-btn {
    width: 100%;
    padding: 16px;
    font-size: 1.05rem;
    font-weight: 600;
    border-radius: 14px;
    cursor: pointer;
    background: var(--primary);
    color: white;
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    transition: var(--transition);
    box-shadow: 0 4px 20px var(--primary-glow);
    margin-top: 8px;
}
.calc-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

/* Results Panel */
.results-panel { display: flex; flex-direction: column; gap: 20px; }

.battery-card {
    background: var(--bg-body);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 28px;
    text-align: center;
}

.battery-card h3 { margin-bottom: 20px; font-size: 1rem; }

.battery-wrap {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.battery-body {
    width: 180px;
    height: 80px;
    border: 3px solid var(--border);
    border-radius: 12px;
    position: relative;
    overflow: hidden;
}

.battery-fill {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0%;
    height: 100%;
    background: linear-gradient(90deg, var(--primary-dark), var(--primary));
    transition: width 1s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 8px;
}

.battery-terminal {
    width: 12px;
    height: 36px;
    background: var(--border);
    border-radius: 0 4px 4px 0;
}

.battery-pct {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary);
    margin-top: 16px;
}

.stat-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.stat-item {
    background: var(--bg-body);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 20px 16px;
    text-align: center;
}

.stat-item i {
    font-size: 1.6rem;
    color: var(--primary);
    margin-bottom: 8px;
}

.stat-item .value {
    font-size: 1.6rem;
    font-weight: 700;
    margin: 6px 0 4px;
}

.stat-item .label {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.stat-item.highlight {
    grid-column: span 2;
    background: rgba(16, 185, 129, 0.08);
    border-color: var(--primary);
}

.stat-item.highlight .value {
    font-size: 2rem;
    color: var(--primary);
}

/* Installation CTA */
.install-cta {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.15), rgba(16, 185, 129, 0.05));
    border: 2px solid var(--primary);
    border-radius: 20px;
    padding: 28px;
    text-align: center;
}

.install-cta h3 {
    font-size: 1.2rem;
    margin-bottom: 12px;
}

.install-cta p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 16px;
}

.install-cta .price {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 16px;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 28px;
    background: var(--primary);
    color: white;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

/* Custom Car Input */
.custom-input {
    background: rgba(16, 185, 129, 0.05);
    border: 1px solid rgba(16, 185, 129, 0.3);
    border-radius: 14px;
    padding: 20px;
    margin-bottom: 20px;
}

.custom-input h4 {
    font-size: 0.95rem;
    color: var(--primary);
    margin-bottom: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.custom-input .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

@media (max-width: 500px) {
    .custom-input .form-row { grid-template-columns: 1fr; }
}

/* Manual Input Hint */
.manual-hint {
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-align: center;
    margin-top: 12px;
    opacity: 0.8;
}

/* ===== INSTALLATION SECTION ===== */
.install-section {
    padding: 100px 0;
    background: var(--bg-body);
}

.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-header .subtitle {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 12px;
}

.section-header h2 {
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    margin-bottom: 16px;
}

.section-header p {
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
    font-size: 1.05rem;
}

.install-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 50px;
}

@media (max-width: 850px) {
    .install-grid { grid-template-columns: 1fr; }
}

.install-card {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 32px 28px;
    text-align: center;
    transition: var(--transition);
}

.install-card:hover {
    border-color: var(--primary);
    transform: translateY(-4px);
    box-shadow: 0 15px 40px var(--primary-glow);
}

.install-card .icon {
    width: 70px;
    height: 70px;
    background: rgba(16, 185, 129, 0.1);
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 2rem;
    color: var(--primary);
}

.install-card h3 {
    font-size: 1.15rem;
    margin-bottom: 12px;
}

.install-card p {
    color: var(--text-secondary);
    font-size: 0.92rem;
    line-height: 1.6;
}

/* Pricing Box */
.pricing-box {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.12), rgba(16, 185, 129, 0.05));
    border: 2px solid var(--primary);
    border-radius: 24px;
    padding: 50px 40px;
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.pricing-box .badge {
    display: inline-block;
    background: var(--primary);
    color: white;
    padding: 6px 16px;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 20px;
}

.pricing-box h3 {
    font-size: 1.8rem;
    margin-bottom: 16px;
}

.pricing-box .price {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 8px;
}

.pricing-box .price-note {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.pricing-box ul {
    text-align: left;
    max-width: 400px;
    margin: 0 auto 28px;
}

.pricing-box li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 0;
    border-bottom: 1px solid var(--border);
    font-size: 0.95rem;
}

.pricing-box li:last-child { border-bottom: none; }

.pricing-box li i {
    color: var(--primary);
    font-size: 1.2rem;
}

/* ===== ZONES SECTION ===== */
.zones-section {
    padding: 80px 0;
    background: var(--bg-surface);
}

.zones-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    max-width: 900px;
    margin: 40px auto 0;
}

@media (max-width: 700px) {
    .zones-grid { grid-template-columns: repeat(2, 1fr); }
}

.zone-item {
    background: var(--bg-body);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 20px;
    text-align: center;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.zone-item i { color: var(--primary); }

/* ===== FAQ SECTION ===== */
.faq-section {
    padding: 100px 0;
    background: var(--bg-body);
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: 16px;
    margin-bottom: 16px;
    overflow: hidden;
    transition: var(--transition);
}

.faq-item:hover { border-color: var(--primary); }

.faq-question {
    width: 100%;
    padding: 22px 28px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: none;
    border: none;
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 1.05rem;
    font-weight: 600;
    cursor: pointer;
    text-align: left;
}

.faq-question i {
    color: var(--primary);
    font-size: 1.3rem;
    transition: transform 0.3s;
}

.faq-item.active .faq-question i { transform: rotate(180deg); }

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    background: rgba(255, 255, 255, 0.02);
}

.faq-item.active .faq-answer {
    max-height: 400px;
}

.faq-answer-content {
    padding: 0 28px 24px;
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* ===== CONTACT SECTION ===== */
.contact-section {
    padding: 100px 0;
    background: linear-gradient(180deg, var(--bg-surface) 0%, var(--bg-body) 100%);
}

.contact-card {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 50px 40px;
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.contact-card h2 {
    font-size: 2rem;
    margin-bottom: 16px;
}

.contact-card > p {
    color: var(--text-secondary);
    margin-bottom: 32px;
    font-size: 1.05rem;
}

.contact-whatsapp {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: #25D366;
    color: white;
    padding: 18px 36px;
    border-radius: 14px;
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 28px;
    transition: var(--transition);
}

.contact-whatsapp:hover {
    background: #1da851;
    transform: translateY(-3px);
}

.contact-info {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}

.contact-info-item {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-secondary);
}

.contact-info-item i { color: var(--primary); font-size: 1.2rem; }

/* ===== FOOTER ===== */
.footer {
    background: var(--bg-surface);
    border-top: 1px solid var(--border);
    padding: 50px 0 30px;
}

.footer-content {
    text-align: center;
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.footer-logo i { color: var(--primary); }

.footer-links {
    display: flex;
    justify-content: center;
    gap: 32px;
    flex-wrap: wrap;
    margin-bottom: 30px;
}

.footer-links a {
    color: var(--text-secondary);
    font-size: 0.9rem;
    transition: var(--transition);
}

.footer-links a:hover { color: var(--primary); }

.copyright {
    color: var(--text-secondary);
    font-size: 0.85rem;
    opacity: 0.7;
}

/* ===== PWA BANNER ===== */
.pwa-banner {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--bg-surface);
    border-top: 1px solid var(--border);
    padding: 16px 24px;
    z-index: 999;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    box-shadow: 0 -4px 20px rgba(0,0,0,0.3);
}

.pwa-banner.show { display: flex; }

.pwa-banner .pwa-info {
    display: flex;
    align-items: center;
    gap: 14px;
    flex: 1;
}

.pwa-banner .pwa-info img {
    width: 44px;
    height: 44px;
    border-radius: 10px;
}

.pwa-banner .pwa-text {
    font-size: 0.85rem;
}

.pwa-banner .pwa-text strong {
    display: block;
    font-size: 0.95rem;
    margin-bottom: 2px;
}

.pwa-banner .pwa-btn {
    background: var(--primary);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 12px;
    font-weight: 600;
    cursor: pointer;
    white-space: nowrap;
}

.pwa-banner .pwa-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.4rem;
    cursor: pointer;
    padding: 6px;
}

/* ===== NAVIGATION ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(15, 17, 21, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.logo {
    font-size: 1.4rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo i { color: var(--primary); }

.nav-menu {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    padding: 10px 16px;
    border-radius: 10px;
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
}

.nav-link:hover { background: rgba(16, 185, 129, 0.1); color: var(--primary); }

.nav-cta {
    background: var(--primary);
    color: white !important;
    padding: 10px 20px !important;
    border-radius: 10px;
    font-weight: 600;
}

.nav-cta:hover { background: var(--primary-dark) !important; }

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-toggle .bar {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
}

@media (max-width: 768px) {
    .mobile-toggle { display: flex; }
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-surface);
        flex-direction: column;
        padding: 20px;
        border-bottom: 1px solid var(--border);
        gap: 12px;
    }
    .nav-menu.active { display: flex; }
    .nav-link { width: 100%; text-align: center; }
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible { opacity: 1; transform: translateY(0); }