:root {
    --bg-main: #f8fafc;
    --bg-sidebar: #ffffff;
    --primary: #475569;
    --primary-hover: #334155;
    --text-main: #1e293b;
    --text-muted: #64748b;
    --accent: #f43f5e;
    --border: #e2e8f0;
    --white: #ffffff;
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --radius: 0px;

    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme='dark'] {
    --bg-main: #0f172a;
    --bg-sidebar: #1e293b;
    --primary: #334155;
    --primary-hover: #475569;
    --text-main: #f1f5f9;
    --text-muted: #94a3b8;
    --border: #334155;
    --white: #1e293b;
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.5);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    display: flex;
    min-height: 100vh;
    transition: background-color 0.3s;
}

.sidebar {
    width: 260px;
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    transition: var(--transition);
    z-index: 1000;
}

.sidebar-header {
    padding: 2rem;
    text-align: center;
    border-bottom: 2px solid var(--border);
}

.sidebar-header h1 {
    font-size: 1.5rem;
    color: var(--accent);
    font-weight: 800;
    letter-spacing: -0.025em;
}

.sidebar-menu {
    flex: 1;
    padding: 1rem 0;
}

.menu-item {
    display: flex;
    align-items: center;
    padding: 0.875rem 1.5rem;
    color: var(--text-muted);
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    font-weight: 500;
    border-left: 4px solid transparent;
}

.menu-item:hover {
    background: rgba(71, 85, 105, 0.1);
    color: var(--text-main);
}

.menu-item.active {
    background: rgba(244, 63, 94, 0.1);
    color: var(--accent);
    border-left-color: var(--accent);
    font-weight: 700;
}

.menu-item i {
    width: 24px;
    margin-right: 12px;
    font-size: 1.1rem;
    text-align: center;
}


.hamburger {
    display: none;
    position: fixed;
    top: 1rem;
    left: 1rem;
    z-index: 1100;
    background: var(--bg-sidebar);
    border: 1px solid var(--border);
    padding: 0.5rem;
    cursor: pointer;
    color: var(--text-main);
}


.content {
    flex: 1;
    margin-left: 260px;
    padding: 2rem;
    max-width: 1300px;
    transition: var(--transition);
}


.card {
    background: var(--white);
    border: 1px solid var(--border);
    padding: 2rem;
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
}

.header-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}

.balance-card {
    background: var(--primary);
    color: var(--white);
    padding: 1.25rem 2rem;
}


.btn {
    padding: 0.75rem 1.75rem;
    border: 1px solid var(--border);
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    text-transform: uppercase;
    font-size: 0.8rem;
    letter-spacing: 0.05em;
    background: var(--white);
    color: var(--text-main);
}

.btn-primary {
    background: var(--primary);
    color: var(--white);
    border: none;
}

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

.btn-accent {
    background: var(--accent);
    color: var(--white);
    border: none;
}

.btn-accent:hover {
    opacity: 0.9;
}


.form-control {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 1px solid var(--border);
    background: var(--white);
    color: var(--text-main);
    outline: none;
}

.form-control:focus {
    border-color: var(--accent);
}


.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
}

.product-card {
    background: var(--white);
    border: 1px solid var(--border);
    overflow: hidden;
    transition: var(--transition);
}

.product-card:hover {
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.product-img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    background: #f1f5f9;
}

.product-info {
    padding: 1.5rem;
}

.theme-toggle {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 1000;
    width: 50px;
    height: 50px;
    border-radius: 50% !important;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}


@media (max-width: 992px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .content {
        margin-left: 0;
        padding: 1.5rem;
        padding-top: 4rem;
    }

    .hamburger {
        display: block;
    }
}

@media (max-width: 600px) {
    .header-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 1.5rem;
    }

    .balance-card {
        width: 100%;
    }

    .product-grid {
        grid-template-columns: 1fr;
    }
}