/* ============================================
   Layout & Section Styles - Enhanced
   ============================================ */

/* Fixed Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--color-slate-200);
    height: 64px;
}

.navbar__container {
    max-width: var(--container-xl);
    margin: 0 auto;
    padding: 0 var(--space-md);
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.navbar__brand {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-family: var(--font-display);
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-xl);
    color: var(--color-eco-green);
    letter-spacing: -0.02em;
}

.navbar__logo {
    width: 32px;
    height: 32px;
    background: var(--color-eco-green);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-lg);
}

.navbar__nav {
    display: none;
    align-items: center;
    gap: var(--space-xl);
}

.navbar__link {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-slate-600);
    transition: color var(--transition-base);
}

.navbar__link:hover {
    color: var(--color-eco-green);
}

@media (min-width: 768px) {
    .navbar__nav {
        display: flex;
    }
}

/* Hero Section - Enhanced */
.hero {
    position: relative;
    padding-top: calc(64px + var(--space-3xl));
    padding-bottom: var(--space-3xl);
    overflow: hidden;
    background: var(--color-bg);
}

.hero__background {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    height: 100%;
    z-index: 0;
    opacity: 0.1;
    pointer-events: none;
}

.hero__bg-circle-1 {
    position: absolute;
    top: 80px;
    left: 40px;
    width: 288px;
    height: 288px;
    background: var(--color-eco-green);
    border-radius: 50%;
    filter: blur(80px);
}

.hero__bg-circle-2 {
    position: absolute;
    bottom: 80px;
    right: 40px;
    width: 384px;
    height: 384px;
    background: var(--color-action-blue);
    border-radius: 50%;
    filter: blur(80px);
}

.hero .container {
    position: relative;
    z-index: 1;
    text-align: center;
}

.hero__badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-md);
    background: rgba(26, 77, 46, 0.1);
    color: var(--color-eco-green);
    border-radius: var(--radius-full);
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-lg);
}

.hero__title {
    font-size: var(--font-size-6xl);
    margin-bottom: var(--space-lg);
    line-height: 1.1;
    color: var(--color-slate-900);
}

.hero__title-highlight {
    color: var(--color-eco-green);
}

.hero__subtitle {
    font-size: var(--font-size-xl);
    color: var(--color-slate-600);
    max-width: 700px;
    margin: 0 auto var(--space-xl);
    line-height: var(--line-height-relaxed);
}

.hero__actions {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    align-items: center;
    justify-content: center;
}

@media (min-width: 640px) {
    .hero__actions {
        flex-direction: row;
    }
}

@media (max-width: 768px) {
    .hero__title {
        font-size: var(--font-size-4xl);
    }
    
    .hero__subtitle {
        font-size: var(--font-size-lg);
    }
}

/* Dark Section (Why It Matters) */
.dark-section {
    background: var(--color-slate-900);
    color: white;
    padding: var(--space-3xl) 0;
}

.dark-section__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-2xl);
}

.dark-section__card {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.dark-section__icon {
    width: 48px;
    height: 48px;
    background: var(--color-eco-green);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-sm);
}

.dark-section__icon--orange {
    background: var(--color-action-orange);
}

.dark-section__icon--blue {
    background: var(--color-action-blue);
}

.dark-section__title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: white;
    margin-bottom: var(--space-xs);
}

.dark-section__description {
    color: var(--color-slate-400);
    line-height: var(--line-height-relaxed);
}

/* Calculator Section - Enhanced */
.calculator-section {
    background: var(--color-bg);
    padding: var(--space-3xl) 0;
}

.calculator-section__header {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.calculator-section__title {
    color: var(--color-slate-900);
    margin-bottom: var(--space-sm);
}

.calculator-section__subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-slate-600);
}

.calculator-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xl);
    max-width: 1000px;
    margin: 0 auto;
}

@media (min-width: 768px) {
    .calculator-grid {
        grid-template-columns: 1.2fr 1fr;
    }
}

.calculator-form {
    background: var(--color-bg);
    padding: var(--space-2xl);
    border-radius: var(--radius-3xl);
    box-shadow: var(--shadow-lg);
}

.calculator-result {
    background: var(--color-slate-50);
    padding: var(--space-xl);
    border-radius: var(--radius-2xl);
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-height: 400px;
}

.calculator-result__placeholder {
    text-align: center;
    padding: var(--space-2xl) 0;
}

.calculator-result__placeholder-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--space-md);
    color: var(--color-slate-300);
    font-size: var(--font-size-4xl);
}

.calculator-result__placeholder-text {
    color: var(--color-slate-400);
    font-size: var(--font-size-sm);
}

.calculator-result__content {
    display: none;
}

.calculator-result__content.show {
    display: block;
    animation: fadeInUp 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.calculator-result__header {
    text-align: center;
    margin-bottom: var(--space-lg);
}

.calculator-result__label {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    color: var(--color-slate-400);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-xs);
}

.calculator-result__amount {
    font-size: var(--font-size-5xl);
    font-family: var(--font-display);
    font-weight: var(--font-weight-bold);
    color: var(--color-action-orange);
    line-height: 1;
}

.calculator-result__details {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.calculator-result__row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: var(--font-size-sm);
}

.calculator-result__row-label {
    color: var(--color-slate-500);
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.calculator-result__row-value {
    font-weight: var(--font-weight-bold);
}

.calculator-result__row--danger {
    color: #dc2626;
}

.calculator-result__row--success {
    color: var(--color-eco-green);
}

.calculator-result__savings {
    background: rgba(26, 77, 46, 0.1);
    color: var(--color-eco-green);
    padding: var(--space-md);
    border-radius: var(--radius-xl);
    text-align: center;
    margin-top: var(--space-md);
}

.calculator-result__savings-label {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    text-transform: uppercase;
    margin-bottom: var(--space-xs);
}

.calculator-result__savings-amount {
    font-size: var(--font-size-3xl);
    font-family: var(--font-display);
    font-weight: var(--font-weight-bold);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* Lead Section - Enhanced */
.lead-section {
    background: var(--color-eco-green);
    color: white;
    padding: var(--space-3xl) 0;
    position: relative;
    overflow: hidden;
    overflow-x: hidden;
}

.lead-section__background {
    position: absolute;
    inset: 0;
    opacity: 0.1;
    pointer-events: none;
}

.lead-section__bg-circle-1 {
    position: absolute;
    top: -80px;
    left: -80px;
    width: 384px;
    height: 384px;
    border: 40px solid white;
    border-radius: 50%;
}

.lead-section__bg-circle-2 {
    position: absolute;
    bottom: -80px;
    right: -80px;
    width: 384px;
    height: 384px;
    border: 40px solid white;
    border-radius: 50%;
}

.lead-section .container {
    position: relative;
    z-index: 1;
}

.lead-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-lg);
    align-items: center;
}

@media (min-width: 1024px) {
    .lead-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-2xl);
    }
}

.lead-section__title {
    font-size: var(--font-size-5xl);
    margin-bottom: var(--space-2xl);
    color: white;
    text-align: center;
}

.lead-content__title {
    font-size: var(--font-size-5xl);
    margin-bottom: var(--space-lg);
    color: white;
}

.lead-content__description {
    font-size: var(--font-size-xl);
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--space-xl);
    line-height: var(--line-height-relaxed);
    text-align: justify;
}

.lead-benefits {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.lead-benefit {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
}

.lead-benefit__icon {
    width: 24px;
    height: 24px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    margin-top: 4px;
    color: white;
    font-size: var(--font-size-sm);
}

.lead-benefit__title {
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--space-xs);
    color: white;
}

.lead-benefit__description {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.7);
}

.lead-form-card {
    background: var(--glass-bg-strong);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: var(--space-2xl);
    border-radius: var(--radius-3xl);
    box-shadow: var(--shadow-2xl);
}

.lead-form__title {
    font-size: var(--font-size-2xl);
    font-family: var(--font-display);
    font-weight: var(--font-weight-bold);
    color: var(--color-slate-900);
    margin-bottom: var(--space-lg);
}

.lead-form__success {
    text-align: center;
    padding: var(--space-2xl) 0;
}

.lead-form__success-title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-slate-900);
    margin-bottom: var(--space-sm);
}

.lead-form__success-text {
    color: var(--color-slate-600);
}

.lead-form__disclaimer {
    font-size: 10px;
    color: var(--color-slate-400);
    text-align: center;
    margin-top: var(--space-md);
}

/* Footer - Enhanced */
.footer {
    background: var(--color-bg);
    border-top: 1px solid var(--color-slate-100);
    padding: var(--space-2xl) 0;
}

.footer__container {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
    align-items: center;
    justify-content: space-between;
}

@media (min-width: 768px) {
    .footer__container {
        flex-direction: row;
    }
}

.footer__brand {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-family: var(--font-display);
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-lg);
    color: var(--color-eco-green);
    letter-spacing: -0.02em;
}

.footer__logo {
    width: 24px;
    height: 24px;
    background: var(--color-eco-green);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-sm);
}

.footer__links {
    display: flex;
    gap: var(--space-xl);
}

.footer__link {
    font-size: var(--font-size-sm);
    color: var(--color-slate-500);
    transition: color var(--transition-base);
}

.footer__link:hover {
    color: var(--color-eco-green);
}

.footer__copy {
    font-size: var(--font-size-xs);
    color: var(--color-slate-400);
}

/* FAQ Section */
.faq-section {
    background: var(--color-bg);
    padding: var(--space-2xl) 0;
}

.faq-header {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.faq-header__title {
    color: var(--color-slate-900);
    margin-bottom: var(--space-sm);
}

.faq-header__subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-slate-600);
}

.faq-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    background: var(--color-eco-green);
    color: white;
    border: none;
    border-radius: var(--radius-xl);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    transition: all var(--transition-base);
    margin: var(--space-lg) auto 0;
    box-shadow: var(--shadow-md);
}

.faq-toggle:hover {
    background: var(--color-eco-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.faq-toggle__icon {
    font-size: var(--font-size-3xl);
    line-height: 1;
    font-weight: var(--font-weight-normal);
}

.faq-content {
    max-width: 900px;
    margin: 0 auto;
}

/* First two items always visible */
.faq-item.visible-by-default {
    display: block;
}

/* Remaining items hidden until expanded */
.faq-item:not(.visible-by-default) {
    display: none;
}

.faq-content.show .faq-item {
    display: block;
}

.faq-item {
    background: var(--color-bg);
    border: 2px solid var(--color-slate-200);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-md);
    overflow: hidden;
    transition: all var(--transition-base);
}

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

.faq-item.open {
    border-color: var(--color-eco-green);
    box-shadow: var(--shadow-md);
}

.faq-item__question {
    padding: var(--space-lg);
    cursor: pointer;
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    user-select: none;
    transition: background var(--transition-base);
}

.faq-item__question:hover {
    background: var(--color-slate-50);
}

.faq-item.open .faq-item__question {
    background: var(--color-slate-50);
}

.faq-item__number {
    font-family: var(--font-display);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-eco-green);
    flex-shrink: 0;
    min-width: 32px;
}

.faq-item__question-text {
    flex: 1;
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-slate-900);
    line-height: var(--line-height-normal);
}

.faq-item__chevron {
    flex-shrink: 0;
    font-size: var(--font-size-xl);
    color: var(--color-slate-400);
    transition: transform var(--transition-base);
}

.faq-item.open .faq-item__chevron {
    transform: rotate(180deg);
    color: var(--color-eco-green);
}

.faq-item__answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.faq-item.open .faq-item__answer {
    max-height: 1000px;
}

.faq-item__answer-content {
    padding: var(--space-md) var(--space-lg) var(--space-lg) calc(var(--space-lg) + 32px + var(--space-md));
    color: var(--color-slate-600);
    line-height: var(--line-height-relaxed);
}

.faq-item__answer-content p {
    margin-bottom: var(--space-md);
}

.faq-item__answer-content p:last-child {
    margin-bottom: 0;
}

.faq-item__answer-content strong {
    color: var(--color-slate-900);
    font-weight: var(--font-weight-semibold);
}

.faq-item__answer-content ul {
    margin: var(--space-sm) 0;
    padding-left: var(--space-lg);
}

.faq-item__answer-content li {
    margin-bottom: var(--space-xs);
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    .lead-content__title {
        font-size: var(--font-size-3xl);
    }
    
    .lead-content__description {
        font-size: var(--font-size-lg);
        text-align: left;
    }
    
    .lead-form-card {
        padding: var(--space-lg);
    }
    
    .lead-section__title {
        font-size: var(--font-size-3xl);
    }
    
    .calculator-result {
        min-height: auto;
    }
    
    .faq-item__answer-content {
        padding-left: var(--space-lg);
    }
    
    .faq-ite