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

:root {
    --primary-color: #4A90E2;
    --secondary-color: #7B68EE;
    --accent-color: #FF6B6B;
    --dark-bg: #1a1a2e;
    --card-bg: #16213e;
    --text-primary: #ffffff;
    --text-secondary: #b8b8b8;
    --success-color: #4CAF50;
    --border-color: #2d3561;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    --shadow-hover: 0 15px 40px rgba(74, 144, 226, 0.4);
}

body {
    font-family: 'Poppins', sans-serif;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.header {
    background: rgba(26, 26, 46, 0.95);
    backdrop-filter: blur(10px);
    padding: 20px 0;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo h1 {
    font-size: 1.8rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav {
    display: flex;
    gap: 20px;
    align-items: center;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    padding: 10px 20px;
    border-radius: 25px;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link:hover,
.nav-link.active {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--text-primary);
    transform: translateY(-2px);
}

.cart-count {
    background: var(--accent-color);
    color: white;
    border-radius: 50%;
    padding: 2px 8px;
    font-size: 0.8rem;
    font-weight: 600;
}

.main {
    padding: 40px 0;
    min-height: calc(100vh - 200px);
}

.footer {
    background: rgba(26, 26, 46, 0.95);
    padding: 30px 0;
    text-align: center;
    margin-top: 50px;
    border-top: 1px solid var(--border-color);
}

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

.notification {
    position: fixed;
    top: 90px;
    right: 20px;
    background: var(--success-color);
    color: white;
    padding: 15px 25px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    transform: translateX(400px);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.3s ease, opacity 0.3s ease;
    z-index: 2000;
    font-weight: 500;
}

.notification.show {
    transform: translateX(0);
    opacity: 1;
    pointer-events: auto;
}

.notification-success {
    background: var(--success-color);
}

.notification-error {
    background: var(--accent-color);
}

@media (max-width: 600px) {
    .header .container {
        flex-direction: column;
        gap: 15px;
    }

    .nav {
        width: 100%;
        justify-content: center;
    }
}