/* ===== CSS VARIABLES ===== */
:root {
    /* Colors */
    --primary-blue: #007AFF;
    --primary-blue-dark: #0056CC;
    --secondary-purple: #5856D6;
    --accent-red: #FF3B30;
    --text-dark: #1D1D1F;
    --text-medium: #424245;
    --text-light: #8E8E93;
    --bg-white: #FFFFFF;
    --bg-light: #F5F5F7;
    --bg-gray: #E5E5EA;
    --border-light: rgba(0, 0, 0, 0.05);
    --border-medium: rgba(0, 0, 0, 0.1);
    --success-green: #34C759;
    --warning-orange: #FF9500;
    
    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-xxl: 48px;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 30px;
    --radius-round: 50%;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 12px 40px rgba(0, 0, 0, 0.15);
    
    /* Transitions */
    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Font Sizes */
    --font-xs: 0.75rem;
    --font-sm: 0.875rem;
    --font-base: 1rem;
    --font-lg: 1.125rem;
    --font-xl: 1.25rem;
    --font-2xl: 1.5rem;
    --font-3xl: 1.875rem;
    --font-4xl: 2.25rem;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--text-dark);
    background-color: var(--bg-white);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* ===== HEADER COMPONENT STYLES ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-light);
    z-index: 1000;
    transition: all var(--transition-normal);
    padding: var(--space-sm) 0;
    box-shadow: var(--shadow-sm);
    min-height: 56px;
    display: flex;
    align-items: center;
}

.header.scrolled {
    box-shadow: var(--shadow-md);
    background: rgba(255, 255, 255, 0.99);
    padding: 6px 0;
    min-height: 50px;
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-lg);
    height: 100%;
}

/* ===== LOGO ===== */
.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    z-index: 1001;
    gap: var(--space-sm);
    padding: var(--space-xs) 0;
    transition: all var(--transition-normal);
    min-width: 200px;
}

.logo-img-container {
    flex-shrink: 0;
}

.logo-img {
    height: 42px;
    width: auto;
    max-width: 130px;
    max-height: 42px;
    transition: transform var(--transition-normal);
    object-fit: contain;
    border-radius: var(--radius-sm);
}

.logo:hover .logo-img {
    transform: scale(1.05);
}

.logo-text {
    font-size: var(--font-xl);
    font-weight: 800;
    color: var(--primary-blue);
    letter-spacing: -0.5px;
    line-height: 1.1;
    display: flex;
    flex-direction: column;
}

.logo-text .brand-name {
    font-size: var(--font-xl);
    font-weight: 900;
    color: var(--primary-blue);
    letter-spacing: -1px;
}

.logo-text .tagline {
    font-size: var(--font-xs);
    color: var(--text-light);
    font-weight: 600;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    margin-top: 1px;
}

/* Main Navigation */
.main-nav {
    flex: 1;
    display: flex;
    justify-content: center;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: var(--space-lg);
    margin: 0;
    padding: 0;
}

.nav-link {
    text-decoration: none;
    color: var(--text-medium);
    font-weight: 500;
    font-size: var(--font-base);
    padding: var(--space-sm) 0;
    position: relative;
    transition: color var(--transition-fast);
    letter-spacing: -0.2px;
    white-space: nowrap;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-blue), var(--secondary-purple));
    transition: width var(--transition-normal);
    border-radius: 2px;
}

.nav-link:hover {
    color: var(--primary-blue);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-link.active {
    color: var(--primary-blue);
    font-weight: 600;
}

/* Header Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    flex-shrink: 0;
}

.phone-link {
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: var(--primary-blue);
    font-weight: 600;
    font-size: var(--font-base);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    background: linear-gradient(135deg, rgba(0, 122, 255, 0.08), rgba(88, 86, 214, 0.08));
    border: 1px solid rgba(0, 122, 255, 0.15);
    white-space: nowrap;
}

.phone-link:hover {
    background: linear-gradient(135deg, rgba(0, 122, 255, 0.15), rgba(88, 86, 214, 0.15));
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.whatsapp-link {
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: var(--success-green);
    font-weight: 600;
    font-size: var(--font-base);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    background: rgba(52, 199, 89, 0.08);
    border: 1px solid rgba(52, 199, 89, 0.15);
    white-space: nowrap;
}

.whatsapp-link:hover {
    background: rgba(52, 199, 89, 0.15);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.cart-link {
    position: relative;
    padding: var(--space-md);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    color: var(--text-medium);
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-light);
}

.cart-link:hover {
    background-color: var(--primary-blue);
    color: white;
    transform: translateY(-1px);
}

.cart-count {
    position: absolute;
    top: -6px;
    right: -6px;
    background: linear-gradient(135deg, var(--accent-red), var(--warning-orange));
    color: white;
    font-size: var(--font-xs);
    font-weight: 700;
    width: 22px;
    height: 22px;
    border-radius: var(--radius-round);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--bg-white);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: var(--font-2xl);
    color: var(--text-dark);
    cursor: pointer;
    padding: var(--space-sm);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    z-index: 1002;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.menu-toggle:hover {
    background-color: var(--bg-light);
    color: var(--primary-blue);
}

/* Overlay for mobile menu */
.mobile-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(2px);
    z-index: 998;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.mobile-overlay.active {
    display: block;
    opacity: 1;
}

/* ===== RESPONSIVE STYLES ===== */
@media (max-width: 992px) {
    .main-nav {
        position: fixed;
        top: 0;
        left: -100%;
        width: 320px;
        height: 100vh;
        background: var(--bg-white);
        box-shadow: var(--shadow-xl);
        padding: 70px var(--space-lg) var(--space-lg);
        transition: left var(--transition-normal);
        z-index: 999;
        display: flex;
        flex-direction: column;
    }
    
    .main-nav.active {
        left: 0;
    }
    
    .nav-list {
        flex-direction: column;
        gap: var(--space-xl);
        width: 100%;
    }
    
    .nav-link {
        padding: var(--space-md) var(--space-lg);
        border-radius: var(--radius-md);
        display: block;
        border-left: 4px solid transparent;
        font-size: var(--font-xl);
    }
    
    .nav-link:hover,
    .nav-link.active {
        background-color: var(--bg-light);
        border-left-color: var(--primary-blue);
    }
    
    .nav-link::after {
        display: none;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .header-actions .phone-link span,
    .header-actions .whatsapp-link span {
        display: none;
    }
    
    .logo-img {
        height: 38px;
        max-height: 38px;
        max-width: 115px;
    }
    
    .logo-text .brand-name {
        font-size: var(--font-lg);
    }
}

@media (max-width: 768px) {
    .header {
        padding: 6px 0;
        min-height: 50px;
    }
    
    .logo-img {
        height: 36px;
        max-height: 36px;
        max-width: 105px;
    }
    
    .logo-text .brand-name {
        font-size: var(--font-base);
    }
    
    .logo-text .tagline {
        font-size: var(--font-xs);
    }
    
    .header-actions {
        gap: var(--space-sm);
    }
    
    .phone-link,
    .whatsapp-link {
        padding: var(--space-sm);
        font-size: 0;
    }
    
    .phone-link i,
    .whatsapp-link i {
        font-size: var(--font-lg);
    }
}

@media (max-width: 480px) {
    .logo-img {
        height: 34px;
        max-height: 34px;
        max-width: 95px;
    }
    
    .logo-text .brand-name {
        font-size: var(--font-sm);
    }
    
    .logo-text .tagline {
        display: none;
    }
    
    .header .container {
        padding: 0 var(--space-sm);
    }
}

/* Header Animation */
@keyframes slideDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.header {
    animation: slideDown 0.5s ease-out;
}