/* ==========================================================================
   CSS Variables for Theming & Typography
   ========================================================================== */
:root {
    /* Color Palette */
    --primary: #d32f2f; /* Xerox Red */
    --primary-dark: #b71c1c;
    --primary-light: #ff6659;
    --secondary: #1a237e; /* Xerox Blue */
    --secondary-dark: #000051;
    --text-main: #212121;
    --text-muted: #757575;
    --bg-main: #fafafa;
    --bg-surface: #ffffff;
    --bg-alt: #f5f5f5;
    --border-color: #eeeeee;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 8rem;

    /* Transitions & Shadows */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 12px 24px rgba(0,0,0,0.12);
    --shadow-hover: 0 20px 40px rgba(0,0,0,0.15);

    /* Fonts */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

/* ==========================================================================
   Reset & Base Styles
   ========================================================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-sans);
    color: var(--text-main);
    background-color: var(--bg-main);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--secondary-dark);
}

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

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

ul {
    list-style: none;
}

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

/* ==========================================================================
   Layout
   ========================================================================== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.site-header {
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
    transition: background-color var(--transition-base), box-shadow var(--transition-base);
}

.header-inner {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 1rem 0;
    gap: 1rem;
}

.brand {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 800;
    color: var(--secondary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

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

/* Navigation Menu */
.main-nav > ul {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.main-nav > ul > li {
    position: relative;
}

.main-nav > ul > li > a {
    font-weight: 600;
    color: #ffffff;
    padding: 0.5rem 0;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

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

.main-nav > ul > li:hover > a::after {
    width: 100%;
}

.main-nav > ul > li:hover > a {
    color: #ffffff;
    opacity: 0.8;
}

/* Dropdown Menu */
.dropdown {
    position: absolute;
    top: 100%;
    left: -1rem;
    background: var(--bg-surface);
    min-width: 240px;
    box-shadow: var(--shadow-lg);
    border-radius: 8px;
    padding: 1rem 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--transition-base);
    border: 1px solid var(--border-color);
}

.main-nav > ul > li:hover .dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown li a {
    display: block;
    padding: 0.5rem 1.5rem;
    color: var(--text-main);
    font-weight: 500;
    transition: background var(--transition-fast), color var(--transition-fast);
}

.dropdown li a:hover {
    background-color: var(--bg-alt);
    color: var(--primary);
    padding-left: 2rem;
}

.dropdown-icon {
    font-size: 0.8em;
    transition: transform var(--transition-base);
}

.main-nav > ul > li:hover .dropdown-icon {
    transform: rotate(180deg);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
    position: relative;
    padding: var(--spacing-xl) 0;
    background: linear-gradient(135deg, var(--secondary-dark) 0%, var(--secondary) 100%);
    color: white;
    overflow: hidden;
    text-align: center;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.05) 0%, rgba(0,0,0,0) 50%);
    animation: rotate 30s linear infinite;
    pointer-events: none;
}

@keyframes rotate {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 3.5rem;
    color: white;
    margin-bottom: var(--spacing-md);
    animation: fadeUp 0.8s ease-out;
}

.hero p {
    font-size: 1.2rem;
    opacity: 0.9;
    margin-bottom: var(--spacing-lg);
    animation: fadeUp 1s ease-out;
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-base);
    border: none;
    font-family: var(--font-sans);
}

.btn-primary {
    background-color: var(--primary);
    color: white;
    box-shadow: 0 4px 15px rgba(211, 47, 47, 0.4);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(211, 47, 47, 0.6);
}

.btn-light {
    background-color: white;
    color: var(--secondary-dark);
    box-shadow: var(--shadow-md);
}

.btn-light:hover {
    background-color: var(--bg-alt);
    color: var(--primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* ==========================================================================
   Cards / Feature Grid
   ========================================================================== */
.features {
    padding: var(--spacing-xl) 0;
    background-color: var(--bg-surface);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.section-header p {
    color: var(--text-muted);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

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

.card {
    background: var(--bg-surface);
    border-radius: 12px;
    padding: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--primary);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform var(--transition-base);
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
}

.card:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

.card-icon {
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: var(--spacing-sm);
}

.card h3 {
    margin-bottom: var(--spacing-xs);
    font-size: 1.25rem;
}

.card p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
    background-color: var(--secondary-dark);
    color: white;
    padding: var(--spacing-lg) 0 var(--spacing-md);
    border-top: 4px solid var(--primary);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-widget h3 {
    color: white;
    margin-bottom: var(--spacing-sm);
    font-size: 1.2rem;
    position: relative;
    padding-bottom: 0.5rem;
}

.footer-widget h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background-color: var(--primary);
}

.footer-widget ul li {
    margin-bottom: 0.5rem;
}

.footer-widget a {
    color: rgba(255, 255, 255, 0.7);
    transition: color var(--transition-fast), padding-left var(--transition-fast);
}

.footer-widget a:hover {
    color: white;
    padding-left: 5px;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.9rem;
}

/* ==========================================================================
   Animations
   ========================================================================== */
@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==========================================================================
   Mobile Navigation
   ========================================================================== */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 1.8rem;
    cursor: pointer;
    padding: 0.5rem;
}

@media (max-width: 768px) {
    .nav-wrapper .container {
        display: flex;
        justify-content: flex-end;
        align-items: center;
        padding-top: 0.2rem;
        padding-bottom: 0.2rem;
        position: relative;
    }
    
    .mobile-menu-btn {
        display: block;
    }

    .main-nav {
        display: none !important;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--secondary);
        z-index: 1000;
        box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    }
    
    .main-nav.show-menu {
        display: block !important;
    }

    .main-nav > ul {
        flex-direction: column;
        gap: 0;
        width: 100%;
    }

    .main-nav > ul > li {
        width: 100%;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
    }

    .main-nav > ul > li > a {
        padding: 1rem;
        display: flex;
        justify-content: space-between;
        width: 100%;
    }
    
    .main-nav > ul > li:hover > a::after {
        display: none;
    }

    .dropdown {
        position: static;
        width: 100%;
        box-shadow: none;
        background-color: rgba(0, 0, 0, 0.2);
        border: none;
        border-radius: 0;
        display: none;
        opacity: 1;
        visibility: visible;
        transform: none;
        padding: 0;
    }

    .main-nav > ul > li.show-dropdown .dropdown {
        display: block;
    }

    .dropdown li a {
        padding: 0.8rem 2rem;
        color: white;
    }

    .dropdown li a:hover {
        background-color: rgba(255, 255, 255, 0.1);
        color: white;
        padding-left: 2rem;
    }
}/* ==========================================================================
   Page Content Area
   ========================================================================== */
.page-header {
    background: linear-gradient(135deg, var(--secondary-dark) 0%, var(--secondary) 100%);
    color: white;
    padding: var(--spacing-lg) 0;
    text-align: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.page-header h1 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-xs);
    color: white;
}

.page-header p {
    color: rgba(255, 255, 255, 0.8);
}

.page-content {
    padding: var(--spacing-xl) 0;
    min-height: 50vh;
}

/* ==========================================================================
   WhatsApp Widget
   ========================================================================== */
.whatsapp-widget {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 60px;
    height: 60px;
    background-color: #25d366;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: var(--shadow-lg);
    z-index: 9999;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    animation: pulse 2s infinite;
}

.whatsapp-widget:hover {
    transform: scale(1.1);
    box-shadow: 0 12px 30px rgba(37, 211, 102, 0.4);
    animation: none;
}

.whatsapp-widget img {
    width: 35px;
    height: 35px;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7);
    }
    70% {
        box-shadow: 0 0 0 15px rgba(37, 211, 102, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(37, 211, 102, 0);
    }
}