/* ==========================================================================
   SOLAREBANK - PREMIUM CSS
   ========================================================================== */

/* --- CSS Variables --- */
:root {
    --primary: #FDB813; /* Solar Yellow */
    --primary-hover: #e5a40a;
    --secondary: #12805c; /* Eco Green */
    --secondary-hover: #0d6145;
    --dark: #001f3f; /* Deep Blue */
    --dark-lighter: #0a2d52;
    --light: #f8f9fa;
    --white: #ffffff;
    --text: #333333;
    --text-light: #666666;
    --silver: #e0e0e0;
    --gradient-eco: linear-gradient(135deg, var(--secondary) 0%, var(--primary) 100%);
    --gradient-dark: linear-gradient(135deg, var(--dark) 0%, var(--dark-lighter) 100%);
    --shadow-soft: 0 4px 20px rgba(0, 0, 0, 0.05);
    --shadow-hover: 0 10px 30px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    --border-radius: 12px;
}

/* --- Base --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    background-color: var(--light);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

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

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
    color: var(--dark);
    line-height: 1.2;
    margin-bottom: 1rem;
    font-weight: 700;
}

h1 { font-size: 3rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 2rem; }

p {
    margin-bottom: 1rem;
    color: var(--text-light);
}

.text-gradient {
    background: var(--gradient-eco);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

/* --- Layout --- */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 80px 0;
}

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

.section-title h2 {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.section-title p {
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* --- Utilities --- */
.text-center { text-align: center; }
.mt-4 { margin-top: 1.5rem; }
.mb-4 { margin-bottom: 1.5rem; }
.py-4 { padding-top: 1.5rem; padding-bottom: 1.5rem; }

/* --- Buttons --- */
.btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1.1rem;
    cursor: pointer;
    border: none;
    outline: none;
    text-align: center;
    transition: var(--transition);
    z-index: 1;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 0; height: 100%;
    background-color: rgba(255,255,255,0.2);
    transition: var(--transition);
    z-index: -1;
}

.btn:hover::before {
    width: 100%;
}

.btn-primary {
    background-color: var(--primary);
    color: var(--dark);
    box-shadow: 0 4px 15px rgba(253, 184, 19, 0.3);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(253, 184, 19, 0.4);
}

.btn-secondary {
    background-color: var(--secondary);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(18, 128, 92, 0.3);
}

.btn-secondary:hover {
    background-color: var(--secondary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(18, 128, 92, 0.4);
}

.btn-dark {
    background-color: var(--dark);
    color: var(--white);
}

.btn-dark:hover {
    background-color: var(--dark-lighter);
}

.btn-full {
    width: 100%;
    display: block;
}

/* --- Preloader --- */
#preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--dark);
    z-index: 9999;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    transition: opacity 0.5s ease;
}

.loader-bar-container {
    width: 200px;
    height: 4px;
    background-color: rgba(255,255,255,0.1);
    border-radius: 2px;
    margin-top: 20px;
    overflow: hidden;
}

.loader-bar {
    height: 100%;
    width: 0;
    background: var(--gradient-eco);
    border-radius: 2px;
    animation: loading 3s ease forwards;
}

.preloader-text {
    color: var(--white);
    font-size: 1.2rem;
    font-weight: 500;
    letter-spacing: 2px;
}

@keyframes loading {
    0% { width: 0; }
    50% { width: 60%; }
    100% { width: 100%; }
}

/* --- Disclosure Bar --- */
.disclosure-bar {
    background-color: var(--dark-lighter);
    color: var(--silver);
    font-size: 0.8rem;
    text-align: center;
    padding: 8px 20px;
}

/* --- Header & Navbar --- */
.header {
    background-color: var(--white);
    box-shadow: var(--shadow-soft);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: var(--transition);
}

.header.scrolled {
    padding: 5px 0;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.logo {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--dark);
    display: flex;
    align-items: center;
    gap: 10px;
}

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

.nav-links {
    display: flex;
    gap: 30px;
    align-items: center;
}

.nav-links a {
    font-weight: 500;
    color: var(--dark);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary);
    transition: var(--transition);
}

.nav-links a:hover::after {
    width: 100%;
}

.hamburger {
    display: none;
    cursor: pointer;
    flex-direction: column;
    gap: 5px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background-color: var(--dark);
    transition: var(--transition);
    border-radius: 3px;
}

/* --- Hero Section --- */
.hero {
    min-height: 80vh;
    display: flex;
    align-items: center;
    background: var(--gradient-dark);
    color: var(--white);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background-image: url('../images/roof.png');
    background-size: cover;
    background-position: center;
    opacity: 0.2;
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 600px;
}

.hero h1 {
    color: var(--white);
    font-size: 3.5rem;
    margin-bottom: 20px;
}

.hero p {
    color: var(--silver);
    font-size: 1.2rem;
    margin-bottom: 30px;
}

.hero-btns {
    display: flex;
    gap: 15px;
}

/* --- Floating Info Cards --- */
.floating-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: -60px;
    position: relative;
    z-index: 2;
    padding: 0 20px;
}

.card {
    background-color: var(--white);
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--shadow-hover);
    transition: var(--transition);
    text-align: center;
    border-bottom: 4px solid transparent;
}

.card:hover {
    transform: translateY(-10px);
    border-bottom-color: var(--primary);
}

.card-icon {
    font-size: 2.5rem;
    color: var(--secondary);
    margin-bottom: 15px;
}

.card h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
}

/* --- Product Showcase --- */
.product-showcase {
    display: flex;
    align-items: center;
    gap: 50px;
}

.product-showcase.reverse {
    flex-direction: row-reverse;
}

.product-image {
    flex: 1;
    position: relative;
}

.product-image img {
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-hover);
    transition: var(--transition);
}

.product-image:hover img {
    transform: scale(1.02);
}

.product-info {
    flex: 1;
}

.product-info ul {
    margin: 20px 0;
}

.product-info li {
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.product-info li i {
    color: var(--secondary);
}

/* --- Eco Features --- */
.eco-features {
    background-color: var(--white);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.feature-item {
    display: flex;
    gap: 20px;
}

.feature-icon {
    width: 60px;
    height: 60px;
    background-color: rgba(18, 128, 92, 0.1);
    color: var(--secondary);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

/* --- Trust Badges --- */
.trust-section {
    background-color: var(--dark);
    color: var(--white);
    padding: 50px 0;
}

.badges-container {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: 30px;
}

.badge {
    text-align: center;
}

.badge i {
    font-size: 3rem;
    color: var(--primary);
    margin-bottom: 15px;
}

/* --- Accordion FAQ --- */
.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background-color: var(--white);
    border-radius: var(--border-radius);
    margin-bottom: 15px;
    box-shadow: var(--shadow-soft);
    overflow: hidden;
}

.faq-question {
    padding: 20px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    transition: var(--transition);
}

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

.faq-question i {
    transition: transform 0.3s ease;
}

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

.faq-answer {
    padding: 0 20px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.active .faq-answer {
    padding: 0 20px 20px 20px;
    max-height: 500px;
}

/* --- Order Page specifics --- */
.order-container {
    display: flex;
    gap: 40px;
    margin-top: 40px;
}

.order-gallery {
    flex: 3;
}

.main-image {
    width: 100%;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-soft);
    margin-bottom: 20px;
    border: 1px solid var(--silver);
}

.thumbnails {
    display: flex;
    gap: 15px;
}

.thumb {
    width: 100px;
    height: 100px;
    object-fit: cover;
    border-radius: 8px;
    cursor: pointer;
    border: 2px solid transparent;
    transition: var(--transition);
}

.thumb.active, .thumb:hover {
    border-color: var(--primary);
}

.order-sidebar {
    flex: 2;
}

.sticky-card {
    position: sticky;
    top: 100px;
    background-color: var(--white);
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-hover);
    border-top: 5px solid var(--secondary);
}

.price-tag {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 10px;
}

.old-price {
    text-decoration: line-through;
    color: var(--text-light);
    font-size: 1.2rem;
}

/* --- Editorial Review --- */
.editorial-content {
    max-width: 800px;
    margin: 0 auto;
    background: var(--white);
    padding: 50px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-soft);
}

.editorial-content h2 {
    margin-top: 40px;
    color: var(--secondary);
}

.editorial-content p {
    font-size: 1.1rem;
    margin-bottom: 20px;
}

.editorial-image {
    width: 100%;
    border-radius: var(--border-radius);
    margin: 30px 0;
}

.pros-cons {
    display: flex;
    gap: 30px;
    margin: 40px 0;
}

.pros, .cons {
    flex: 1;
    padding: 20px;
    border-radius: var(--border-radius);
}

.pros {
    background-color: rgba(18, 128, 92, 0.1);
    border: 1px solid var(--secondary);
}

.cons {
    background-color: rgba(220, 53, 69, 0.1);
    border: 1px solid #dc3545;
}

/* --- Footer --- */
.footer {
    background-color: var(--dark);
    color: var(--silver);
    padding: 60px 0 20px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col h4 {
    color: var(--white);
    margin-bottom: 20px;
}

.footer p {
    color: var(--silver);
}

.footer-col ul li {
    margin-bottom: 10px;
}

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

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 20px;
    text-align: center;
    font-size: 0.9rem;
}

/* --- Cookie Popup --- */
.cookie-popup {
    position: fixed;
    bottom: -100%;
    left: 20px;
    right: 20px;
    max-width: 600px;
    margin: 0 auto;
    background-color: var(--white);
    padding: 20px;
    border-radius: var(--border-radius);
    box-shadow: 0 -5px 25px rgba(0,0,0,0.2);
    z-index: 10000;
    transition: bottom 0.5s cubic-bezier(0.25, 0.8, 0.25, 1);
    display: flex;
    align-items: center;
    gap: 20px;
}

.cookie-popup.show {
    bottom: 20px;
}

.cookie-content p {
    margin: 0;
    font-size: 0.9rem;
}

.cookie-btns {
    display: flex;
    gap: 10px;
}

.btn-sm {
    padding: 8px 15px;
    font-size: 0.9rem;
}

/* --- Responsive --- */
@media (max-width: 992px) {
    .order-container {
        flex-direction: column;
    }
    .pros-cons {
        flex-direction: column;
    }
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background-color: var(--white);
        flex-direction: column;
        justify-content: flex-start;
        padding: 40px 20px;
        gap: 20px;
        transition: var(--transition);
        overflow-y: auto;
    }

    .nav-links a {
        font-size: 1.2rem;
        padding: 10px;
    }

    .nav-links .btn {
        margin-top: 10px;
        width: 100%;
        max-width: 300px;
        padding: 15px;
    }
    
    .nav-links.active {
        left: 0;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 6px);
    }
    
    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -6px);
    }

    .hero h1 {
        font-size: 2.5rem;
    }
    
    .section {
        padding: 50px 0;
    }
    
    .product-showcase, .product-showcase.reverse {
        flex-direction: column;
    }
    
    .cookie-popup {
        flex-direction: column;
        text-align: center;
    }
}