@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap');

:root {
    /* Premium Bluish-Black & Crimson Theme */
    --color-bg: #050505;
    --color-surface: #121212;
    --color-surface-light: #1e1e1e;
    --color-primary: #ef4444; /* Vibrant Red */
    --color-primary-dark: #b91c1c;
    --color-primary-glow: rgba(239, 68, 68, 0.4);
    
    --color-text: #f8fafc;
    --color-text-muted: #94a3b8;
    
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-blur: blur(12px);
    
    --font-main: 'Plus Jakarta Sans', sans-serif;
    --shadow-soft: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
    --radius-lg: 1rem;
    --radius-md: 0.75rem;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

::-webkit-scrollbar {
    width: 6px;
}
::-webkit-scrollbar-track {
    background: var(--color-bg);
}
::-webkit-scrollbar-thumb {
    background: var(--color-surface-light);
    border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary);
}

body {
    background-color: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-main);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

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

/* Utilities */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-2 { gap: 0.5rem; }
.gap-4 { gap: 1rem; }
.gap-6 { gap: 1.5rem; }
.gap-8 { gap: 2rem; }
.gap-12 { gap: 3rem; }
.relative { position: relative; }

@media (min-width: 768px) {
    .md-flex-row { flex-direction: row; }
}

.grid { display: grid; }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }

.text-primary { color: var(--color-primary); }
.text-muted { color: var(--color-text-muted); }
.text-center { text-align: center; }
.font-bold { font-weight: 700; }
.uppercase { text-transform: uppercase; }
.letter-spacing { letter-spacing: 0.05em; }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.8rem 1.8rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    border: 1px solid transparent;
    transition: var(--transition);
    font-size: 0.95rem;
    white-space: nowrap;
}

.btn-primary {
    background: var(--color-primary);
    color: white;
    box-shadow: 0 4px 15px var(--color-primary-glow);
}

.btn-primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--color-primary-glow);
}

.btn-outline {
    background: transparent;
    border-color: var(--glass-border);
    color: var(--color-text);
}

.btn-outline:hover {
    background: var(--glass-bg);
    border-color: var(--color-text-muted);
}

/* Glass Card */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    transition: var(--transition);
}

.glass-card:hover {
    border-color: rgba(255, 255, 255, 0.15);
    background: rgba(255, 255, 255, 0.05);
}

/* Dashboard Button */
.dashboard-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 0.6rem 1.2rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: var(--glass-blur);
    border-radius: 50px;
    color: var(--color-text-muted);
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    cursor: pointer;
    transition: var(--transition);
    z-index: 100;
}

.dashboard-btn:hover {
    background: var(--color-primary);
    color: white;
    transform: translateY(-2px);
    border-color: var(--color-primary);
}

.dashboard-btn svg {
    transition: transform 0.3s ease;
}

.dashboard-btn:hover svg {
    transform: scale(1.1);
}

/* Header */
header {
    background: rgba(5, 5, 5, 0.8);
    backdrop-filter: var(--glass-blur);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 80px;
    z-index: 1000;
    border-bottom: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
}

.logo {
    font-size: 1.6rem;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.nav-actions .cart-icon {
    position: relative;
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    color: var(--color-text-muted);
}

.nav-actions .cart-icon:hover {
    background: var(--color-surface-light);
    border-color: rgba(255, 255, 255, 0.2);
    color: white;
    transform: translateY(-2px);
}

#auth-link, .auth-nav-link {
    padding: 0.6rem 1.2rem;
    border-radius: 50px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    font-size: 0.8rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-muted) !important;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

#auth-link:hover, .auth-nav-link:hover {
    background: var(--color-surface-light);
    color: white !important;
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.cart-count {
    position: absolute;
    top: -5px;
    right: -5px;
    background: var(--color-primary);
    color: white;
    font-size: 0.65rem;
    height: 20px;
    min-width: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-weight: 800;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.4);
    border: 2px solid var(--color-bg);
}

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

.animate-fade-in {
    animation: fadeIn 0.8s ease forwards;
}

/* Product Card */
.product-card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid var(--glass-border);
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-soft);
    border-color: var(--color-primary);
}

.product-image-container {
    height: 250px;
    overflow: hidden;
    position: relative;
}

.product-image-container img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.product-card:hover .product-image-container img {
    transform: scale(1.1);
}

.quick-add {
    position: absolute;
    bottom: -50px;
    left: 0;
    width: 100%;
    background: rgba(239, 68, 68, 0.9);
    color: white;
    padding: 0.8rem;
    text-align: center;
    font-weight: 600;
    transition: var(--transition);
    cursor: pointer;
}

.product-card:hover .quick-add {
    bottom: 0;
}

/* Modal System */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(8px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-container {
    background: var(--color-surface);
    border: 1px solid var(--glass-border);
    max-width: 500px;
    width: 90%;
    border-radius: var(--radius-lg);
    position: relative;
    padding: 2.5rem;
    transform: scale(0.9);
    transition: var(--transition);
}

.modal-overlay.active .modal-container {
    transform: scale(1);
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    cursor: pointer;
    color: var(--color-text-muted);
}

/* Toast System */
.toast-container {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 3000;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.toast {
    background: var(--color-surface-light);
    border-left: 4px solid var(--color-primary);
    padding: 1rem 1.5rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-soft);
    display: flex;
    align-items: center;
    gap: 1rem;
    color: var(--color-text);
    min-width: 250px;
    transform: translateX(120%);
    transition: var(--transition);
}

.toast.active {
    transform: translateX(0);
}

/* Responsive */
@media (max-width: 768px) {
    .grid-cols-4, .grid-cols-3 {
        grid-template-columns: repeat(2, 1fr);
    }
    .hero-title { font-size: 2.5rem !important; }
}

@media (max-width: 480px) {
    .grid-cols-2 { grid-template-columns: 1fr; }
}

.btn-close-qv:hover {
    background: var(--color-primary) !important;
    border-color: var(--color-primary) !important;
    transform: rotate(90deg) scale(1.1);
}