/* =========================================
   OEPL Global Styles
   ========================================= */

:root {
    /* Typography */
    --font-primary: 'Inter', 'Segoe UI', Arial, sans-serif;
    --font-secondary: 'Roboto', 'Segoe UI', Arial, sans-serif;

    /* Colors */
    --color-primary: #1a3a5c;
    --color-secondary: #2e6da4;
    --color-accent: #f59e0b;
    --color-bg: #f4f6f9;
    --color-surface: #ffffff;
    --color-border: #dce2ec;
    --color-text-dark: #1a2535;
    --color-text-muted: #6b7a8d;
    --color-text-body: #4a5568;
    --color-text-light: #718096;

    /* Layout Variables */
    --max-width: 1200px;
    --px-desktop: 40px;
    --px-mobile: 20px;
    --py-section-desktop: 60px;
    --py-section-mobile: 40px;
    --gap-element: 24px;
}

/* Base Reset & Styling */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-secondary);
    background-color: var(--color-bg);
    color: var(--color-text-body);
    line-height: 1.6;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-primary);
    color: var(--color-primary);
    margin-bottom: 16px;
}

h1 {
    font-size: 36px;
    font-weight: 700;
    line-height: 1.2;
}

h2 {
    font-size: 28px;
    font-weight: 700;
    line-height: 1.3;
}

h3 {
    font-size: 22px;
    font-weight: 600;
    line-height: 1.4;
    color: var(--color-text-dark);
}

h4 {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-text-dark);
}

a {
    color: var(--color-secondary);
    text-decoration: none;
    transition: color 0.2s ease;
}

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

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

/* Layout Utilities */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--px-desktop);
}

.section {
    padding: var(--py-section-desktop) 0;
}

.section-bg-white {
    background-color: var(--color-surface);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border-radius: 6px;
    font-weight: 600;
    font-family: var(--font-primary);
    cursor: pointer;
    transition: all 0.2s ease;
    border: none;
    text-align: center;
}

.btn-primary {
    background-color: var(--color-accent);
    color: #ffffff;
}

.btn-primary:hover {
    background-color: #d97706;
    /* Darker accent */
    color: #ffffff;
    transform: translateY(-1px);
}

.btn-secondary {
    background-color: #eef3fb;
    color: var(--color-primary);
    border: 1px solid #c5d4ec;
}

.btn-secondary:hover {
    background-color: var(--color-border);
    color: var(--color-primary);
}

/* Cards */
.card {
    background-color: var(--color-surface);
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid var(--color-border);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 25px rgba(0, 0, 0, 0.1);
}

/* Image Wrap for new premium product cards */
.product-image-wrap {
    height: 180px;
    background-color: var(--color-surface);
    display: flex;
    align-items: center;
    justify-content: center;
    border-bottom: 1px solid var(--color-border);
    padding: 24px;
    overflow: hidden;
}

.product-image-wrap img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    filter: drop-shadow(0px 8px 12px rgba(0, 0, 0, 0.15));
    transition: transform 0.4s ease;
}

.card:hover .product-image-wrap img {
    transform: scale(1.08);
    /* Subtle zoom on hover */
}

.card-body {
    padding: var(--gap-element);
}

/* -----------------------------------------
   Header
   ----------------------------------------- */
.site-header {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    border-bottom: 4px solid var(--color-accent);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.logo {
    font-family: var(--font-primary);
    font-size: 24px;
    font-weight: 800;
    color: #ffffff;
    letter-spacing: 1px;
}

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

.main-nav {
    display: flex;
    gap: 24px;
}

.main-nav a {
    color: #ffffff;
    font-weight: 600;
    font-size: 15px;
    opacity: 0.9;
}

.main-nav a:hover,
.main-nav a.active {
    opacity: 1;
    color: var(--color-accent);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 24px;
    cursor: pointer;
}

/* -----------------------------------------
   Footer
   ----------------------------------------- */
.site-footer {
    background-color: var(--color-primary);
    color: #cbd5e1;
    padding: 60px 0 20px;
    font-size: 14px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col h4 {
    color: #ffffff;
    font-size: 16px;
    margin-bottom: 20px;
    letter-spacing: 0.5px;
}

.footer-col p {
    margin-bottom: 16px;
    line-height: 1.8;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: #cbd5e1;
}

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 20px;
    text-align: center;
    font-size: 13px;
}

/* -----------------------------------------
   Responsive Tweaks
   ----------------------------------------- */
@media (max-width: 992px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    h1 {
        font-size: 28px;
    }

    h2 {
        font-size: 24px;
    }

    h3 {
        font-size: 20px;
    }

    .container {
        padding: 0 var(--px-mobile);
    }

    .section {
        padding: var(--py-section-mobile) 0;
    }

    .main-nav {
        display: none;
        /* Mobile menu logic to be added later or via JS */
    }

    .mobile-menu-toggle {
        display: block;
    }

    .header-actions .btn {
        display: none;
        /* Hide primary CTA on very small screens, keep it in mobile menu */
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}