/* ========================================
   CSS Variables & Reset
======================================== */
:root {
    --primary-blue: #0071bc;
    --primary-blue-dark: #005a96;
    --primary-blue-light: #e8f4fc;
    --accent-orange: #fbb034;
    --accent-orange-dark: #e59a1f;
    --accent-orange-light: #fff8eb;
    --text-dark: #1a2b3c;
    --text-medium: #4a5568;
    --text-light: #718096;
    --bg-white: #ffffff;
    --bg-cream: #fafbfc;
    --bg-light: #f7f9fc;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.12);
    --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --transition-fast: 0.2s ease;
    --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font-display: 'Plus Jakarta Sans', sans-serif;
    --font-body: 'DM Sans', sans-serif;
}

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.7;
    color: var(--text-medium);
    background: var(--bg-white);
    -webkit-font-smoothing: antialiased;
}

img {
    max-width: 100%;
    height: auto;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

/* ========================================
   Typography
======================================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    color: var(--text-dark);
    font-weight: 700;
    line-height: 1.2;
}

h1 {
    font-size: clamp(2.25rem, 5vw, 3.5rem);
    letter-spacing: -0.02em;
}

h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    letter-spacing: -0.01em;
}

h3 {
    font-size: clamp(1.25rem, 2.5vw, 1.5rem);
}

p {
    margin-bottom: 1rem;
}

/* ========================================
   Layout Components
======================================== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 80px 0;
}

@media (max-width: 768px) {
    .section {
        padding: 60px 0;
    }
}

.section-header {
    text-align: center;
    max-width: 680px;
    margin: 0 auto 50px;
}

.section-header h2 {
    color: var(--primary-blue);
    margin-bottom: 16px;
}

.section-header p {
    font-size: 1.125rem;
    color: var(--text-light);
}

/* ========================================
   Buttons
======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 32px;
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--transition-smooth);
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-orange) 0%, var(--accent-orange-dark) 100%);
    color: var(--text-dark);
    box-shadow: 0 4px 15px rgba(251, 176, 52, 0.35);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(251, 176, 52, 0.45);
}

.btn-secondary {
    background: var(--bg-white);
    color: var(--primary-blue);
    border: 2px solid var(--primary-blue);
}

.btn-secondary:hover {
    background: var(--primary-blue);
    color: var(--bg-white);
}

.btn-lg {
    padding: 18px 40px;
    font-size: 1.1rem;
}

/* ========================================
   Navigation
======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    transition: all var(--transition-smooth);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.navbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary-blue);
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-icon svg {
    width: 24px;
    height: 24px;
    fill: white;
}

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

.nav-links a {
    padding: 10px 18px;
    font-family: var(--font-display);
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-medium);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.nav-links a:hover {
    color: var(--primary-blue);
    background: var(--primary-blue-light);
}

.nav-cta {
    margin-left: 16px;
}

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

.mobile-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-dark);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

@media (max-width: 900px) {
    .nav-links {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--bg-white);
        flex-direction: column;
        padding: 24px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-smooth);
    }

    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-links a {
        width: 100%;
        padding: 14px 20px;
        text-align: center;
    }

    .nav-cta {
        margin-left: 0;
        margin-top: 8px;
        width: 100%;
    }

    .nav-cta .btn {
        width: 100%;
    }

    .mobile-toggle {
        display: flex;
    }
}

/* ========================================
   Hero Section
======================================== */
.hero {
    position: relative;
    padding: 140px 0 100px;
    background: linear-gradient(180deg, var(--bg-light) 0%, var(--bg-white) 100%);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(0, 113, 188, 0.06) 0%, transparent 70%);
    border-radius: 50%;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(251, 176, 52, 0.08) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-inner {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-content {
    animation: fadeInUp 0.8s ease forwards;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--accent-orange-light);
    border: 1px solid rgba(251, 176, 52, 0.3);
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--accent-orange-dark);
    margin-bottom: 24px;
}

.hero-badge svg {
    width: 16px;
    height: 16px;
    fill: currentColor;
}

.hero h1 {
    margin-bottom: 20px;
}

.hero h1 span {
    color: var(--primary-blue);
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 32px;
    max-width: 520px;
}

.hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 40px;
}

.hero-trust {
    display: flex;
    align-items: center;
    gap: 24px;
    padding-top: 32px;
    border-top: 1px solid var(--border-color);
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 10px;
}

.trust-icon {
    width: 44px;
    height: 44px;
    background: var(--primary-blue-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.trust-icon svg {
    width: 22px;
    height: 22px;
    fill: var(--primary-blue);
}

.trust-text {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-dark);
}

.hero-visual {
    position: relative;
    animation: fadeInUp 0.8s ease 0.2s forwards;
    opacity: 0;
}

.hero-card {
    position: relative;
    background: var(--bg-white);
    border-radius: var(--radius-xl);
    padding: 32px;
    box-shadow: var(--shadow-xl);
}

.hero-card::before {
    content: '';
    position: absolute;
    inset: -2px;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--accent-orange) 100%);
    border-radius: calc(var(--radius-xl) + 2px);
    z-index: -1;
}

.hero-illustration {
    width: 100%;
    height: 280px;
    background: linear-gradient(135deg, var(--bg-light) 0%, var(--primary-blue-light) 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    overflow: hidden;
    position: relative;
}

.house-icon {
    position: relative;
}

.house-icon svg {
    width: 120px;
    height: 120px;
}

.solar-panel {
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 50px;
    background: linear-gradient(135deg, #1e3a5f 0%, #2d5a87 100%);
    border-radius: 4px;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-template-rows: repeat(2, 1fr);
    gap: 2px;
    padding: 4px;
}

.solar-cell {
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    border-radius: 2px;
}

.ev-car {
    position: absolute;
    bottom: 20px;
    right: 30px;
}

.ev-car svg {
    width: 60px;
    height: 40px;
    fill: var(--primary-blue);
}

.charging-bolt {
    position: absolute;
    bottom: 45px;
    right: 15px;
    animation: pulse 2s ease-in-out infinite;
}

.charging-bolt svg {
    width: 20px;
    height: 20px;
    fill: var(--accent-orange);
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(1.1); }
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.stat-item {
    text-align: center;
    padding: 16px;
    background: var(--bg-light);
    border-radius: var(--radius-md);
}

.stat-number {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--primary-blue);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-light);
    margin-top: 4px;
}

@media (max-width: 1024px) {
    .hero-inner {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-cta {
        justify-content: center;
    }

    .hero-trust {
        justify-content: center;
        flex-wrap: wrap;
    }

    .hero-visual {
        max-width: 500px;
        margin: 0 auto;
    }
}

@media (max-width: 600px) {
    .hero {
        padding: 120px 0 60px;
    }

    .hero-trust {
        flex-direction: column;
        gap: 16px;
    }

    .hero-stats {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   Why Choose Us Section
======================================== */
#why-us {
    background: var(--bg-white);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 24px;
}

.benefit-card {
    position: relative;
    padding: 32px;
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: all var(--transition-smooth);
}

.benefit-card:hover {
    border-color: var(--primary-blue);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.benefit-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--primary-blue-light) 0%, rgba(0, 113, 188, 0.15) 100%);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.benefit-icon svg {
    width: 28px;
    height: 28px;
    fill: var(--primary-blue);
}

.benefit-card h3 {
    margin-bottom: 12px;
    color: var(--text-dark);
}

.benefit-card p {
    color: var(--text-light);
    margin-bottom: 0;
}

.benefit-number {
    position: absolute;
    top: 24px;
    right: 24px;
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 800;
    color: var(--bg-light);
    line-height: 1;
}

@media (max-width: 400px) {
    .benefits-grid {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   Lead Capture Form Section
======================================== */
#free-assessment {
    background: linear-gradient(180deg, var(--bg-light) 0%, var(--bg-cream) 100%);
    position: relative;
}

#free-assessment::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-color), transparent);
}

.form-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 60px;
    align-items: start;
}

.form-info {
    position: sticky;
    top: 100px;
}

.form-info h2 {
    color: var(--primary-blue);
    margin-bottom: 20px;
}

.form-info > p {
    font-size: 1.1rem;
    margin-bottom: 32px;
}

.form-benefits {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-benefit {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.form-benefit-icon {
    width: 40px;
    height: 40px;
    min-width: 40px;
    background: var(--accent-orange-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.form-benefit-icon svg {
    width: 20px;
    height: 20px;
    fill: var(--accent-orange-dark);
}

.form-benefit-text h4 {
    font-size: 1rem;
    margin-bottom: 4px;
}

.form-benefit-text p {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-bottom: 0;
}

.form-container {
    background: var(--bg-white);
    padding: 40px;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
}

.form-header {
    margin-bottom: 32px;
}

.form-header h3 {
    font-size: 1.5rem;
    margin-bottom: 8px;
}

.form-header p {
    color: var(--text-light);
    margin-bottom: 0;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-group label {
    font-family: var(--font-display);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-dark);
}

.form-group label .required {
    color: #e53e3e;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 14px 18px;
    font-family: var(--font-body);
    font-size: 1rem;
    color: var(--text-dark);
    background: var(--bg-light);
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    background: var(--bg-white);
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 4px rgba(0, 113, 188, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-light);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.form-submit {
    margin-top: 24px;
}

.form-submit .btn {
    width: 100%;
    padding: 18px;
    font-size: 1.1rem;
}

.form-disclaimer {
    margin-top: 16px;
    font-size: 0.85rem;
    color: var(--text-light);
    text-align: center;
}

.form-disclaimer svg {
    width: 14px;
    height: 14px;
    fill: currentColor;
    vertical-align: middle;
    margin-right: 4px;
}

@media (max-width: 900px) {
    .form-wrapper {
        grid-template-columns: 1fr;
    }

    .form-info {
        position: static;
        text-align: center;
    }

    .form-benefits {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
    }

    .form-benefit {
        flex: 0 1 280px;
    }
}

@media (max-width: 600px) {
    .form-grid {
        grid-template-columns: 1fr;
    }

    .form-container {
        padding: 24px;
    }
}

/* ========================================
   FAQ Section
======================================== */
#faq {
    background: var(--bg-white);
}

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

.faq-item {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    margin-bottom: 16px;
    overflow: hidden;
    transition: all var(--transition-smooth);
}

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

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 24px 28px;
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-dark);
    transition: all var(--transition-fast);
}

.faq-question:hover {
    color: var(--primary-blue);
}

.faq-icon {
    width: 32px;
    height: 32px;
    min-width: 32px;
    background: var(--primary-blue-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-smooth);
}

.faq-icon svg {
    width: 16px;
    height: 16px;
    fill: var(--primary-blue);
    transition: transform var(--transition-smooth);
}

.faq-item.active .faq-icon {
    background: var(--primary-blue);
}

.faq-item.active .faq-icon svg {
    fill: white;
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-smooth);
}

.faq-answer-inner {
    padding: 0 28px 24px;
    color: var(--text-medium);
    line-height: 1.8;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

/* ========================================
   Footer
======================================== */
.footer {
    background: var(--text-dark);
    color: rgba(255, 255, 255, 0.8);
    padding: 48px 0 32px;
}

.footer-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
    text-align: center;
}

.footer-logo {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 800;
    color: white;
}

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

.footer-links a {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.7);
    transition: color var(--transition-fast);
}

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

.footer-divider {
    width: 100%;
    height: 1px;
    background: rgba(255, 255, 255, 0.1);
}

.footer-bottom {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px 24px;
    font-size: 0.9rem;
}

.footer-bottom span {
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-bottom svg {
    width: 16px;
    height: 16px;
    fill: var(--accent-orange);
}

/* ========================================
   Animations
======================================== */
@media (prefers-reduced-motion: no-preference) {
    .benefit-card,
    .faq-item {
        opacity: 0;
        transform: translateY(20px);
        animation: revealUp 0.6s ease forwards;
    }

    .benefit-card:nth-child(1) { animation-delay: 0.1s; }
    .benefit-card:nth-child(2) { animation-delay: 0.2s; }
    .benefit-card:nth-child(3) { animation-delay: 0.3s; }
    .benefit-card:nth-child(4) { animation-delay: 0.4s; }
    .benefit-card:nth-child(5) { animation-delay: 0.5s; }

    .faq-item:nth-child(1) { animation-delay: 0.1s; }
    .faq-item:nth-child(2) { animation-delay: 0.15s; }
    .faq-item:nth-child(3) { animation-delay: 0.2s; }
    .faq-item:nth-child(4) { animation-delay: 0.25s; }
    .faq-item:nth-child(5) { animation-delay: 0.3s; }

    @keyframes revealUp {
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }
}