/* 
 * Hardware System Theme - Black & Yellowish
 * Author: Antigravity
 */

:root {
    --primary-bg: #121212;
    --secondary-bg: #1e1e1e;
    --accent-color: #f1c40f; 
    --accent-hover: #d4ac0d;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --error-color: #e74c3c;
    --success-color: #2ecc71;
    --border-color: #333333;
    --sidebar-width: 250px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--primary-bg);
    color: var(--text-primary);
    line-height: 1.6;
}

/* Landing Page Styles */
.landing-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    text-align: center;
    padding: 20px;
}

.hero-section {
    background: linear-gradient(135deg, var(--secondary-bg) 0%, var(--primary-bg) 100%);
    padding: 3rem;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(241, 196, 15, 0.2);
    border: 1px solid var(--border-color);
}

.hero-title {
    font-size: 3rem;
    color: var(--accent-color);
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.btn {
    display: inline-block;
    padding: 12px 24px;
    background-color: var(--accent-color);
    color: var(--primary-bg);
    text-decoration: none;
    font-weight: bold;
    border-radius: 5px;
    transition: background-color 0.3s ease, transform 0.2s ease;
    border: none;
    cursor: pointer;
}

.btn:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: transparent;
    border: 2px solid var(--accent-color);
    color: var(--accent-color);
    margin-left: 10px;
}

.btn-secondary:hover {
    background-color: rgba(241, 196, 15, 0.1);
    color: var(--accent-color);
}


/* Login Page Styles */
.login-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
}

.login-card {
    background-color: var(--secondary-bg);
    padding: 2.5rem;
    border-radius: 8px;
    width: 100%;
    max-width: 400px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.5);
    border-top: 4px solid var(--accent-color);
}

.login-header h2 {
    color: var(--accent-color);
    margin-bottom: 0.5rem;
    text-align: center;
}

.login-header p {
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 2rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.form-control {
    width: 100%;
    padding: 10px;
    background-color: var(--primary-bg);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-primary);
    font-size: 1rem;
}

.form-control:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 5px rgba(241, 196, 15, 0.3);
}

.login-btn {
    width: 100%;
    padding: 12px;
    background-color: var(--accent-color);
    color: var(--primary-bg);
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s;
}

.login-btn:hover {
    background-color: var(--accent-hover);
}

.alert {
    padding: 10px;
    border-radius: 4px;
    margin-bottom: 1rem;
    text-align: center;
}

.alert-danger {
    background-color: rgba(231, 76, 60, 0.2);
    border: 1px solid var(--error-color);
    color: var(--error-color);
}

.alert.success {
    background-color: rgba(46, 204, 113, 0.2);
    border: 1px solid var(--success-color);
    color: var(--success-color);
}


/* --- Dashboard Layout & Responsive UI --- */

.dashboard-container {
    display: flex;
    min-height: 100vh;
    position: relative;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background-color: var(--secondary-bg);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 20px;
    position: fixed;
    height: 100vh;
    transition: transform 0.3s ease;
    z-index: 1000;
    overflow-y: auto; /* Allow scrolling */
    -ms-overflow-style: none;  /* IE and Edge */
    scrollbar-width: none;  /* Firefox */
}

/* Hide scrollbar for Chrome, Safari and Opera */
.sidebar::-webkit-scrollbar {
    display: none;
}

.sidebar-header {
    color: var(--accent-color);
    font-size: 1.5rem;
    margin-bottom: 2rem;
    text-transform: uppercase;
    text-align: center;
    font-weight: bold;
    letter-spacing: 1px;
}

.nav-menu {
    list-style: none;
    padding: 0;
}

.nav-item {
    margin-bottom: 10px;
}

.nav-link {
    display: block;
    padding: 12px 15px;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 4px;
    transition: all 0.3s;
    font-size: 0.95rem;
}

.nav-link:hover, .nav-link.active {
    background-color: rgba(241, 196, 15, 0.1);
    color: var(--accent-color);
    border-left: 3px solid var(--accent-color);
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: 30px;
    transition: margin-left 0.3s ease;
    width: calc(100% - var(--sidebar-width));
}

/* Header Bar */
.header-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
}

.welcome-text {
    font-size: 1.2rem;
}

.role-badge {
    background-color: var(--accent-color);
    color: var(--primary-bg);
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    text-transform: uppercase;
    font-weight: bold;
    display: inline-block;
    margin-left: 10px;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background-color: var(--secondary-bg);
    padding: 25px;
    border-radius: 8px;
    border-left: 4px solid var(--accent-color);
    box-shadow: 0 2px 10px rgba(0,0,0,0.2);
    transition: transform 0.2s;
}

.stat-card:hover {
    transform: translateY(-3px);
}

.stat-value {
    font-size: 2rem;
    font-weight: bold;
    color: var(--text-primary);
    margin-bottom: 5px;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Toggle Button (Mobile) */
.menu-toggle {
    display: none;
    position: fixed;
    top: 15px;
    right: 15px;
    z-index: 1100;
    background: var(--accent-color);
    color: var(--primary-bg);
    border: none;
    padding: 10px;
    border-radius: 5px;
    cursor: pointer;
    font-weight: bold;
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
    :root {
        --sidebar-width: 0px;
    }

    .sidebar {
        width: 250px;
        transform: translateX(-100%);
    }

    .sidebar.active {
        transform: translateX(0);
        box-shadow: 5px 0 15px rgba(0,0,0,0.5);
    }

    .main-content {
        margin-left: 0;
        width: 100%;
        padding: 20px;
    }

    .menu-toggle {
        display: block;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    /* Tables Responsive */
    table, thead, tbody, th, td, tr { 
        display: block; 
    }
    
    thead tr { 
        position: absolute;
        top: -9999px;
        left: -9999px;
    }
    
    tr { border: 1px solid var(--border-color); margin-bottom: 10px; border-radius: 8px; overflow: hidden; }
    
    td { 
        border: none;
        border-bottom: 1px solid var(--border-color); /* Separator */
        position: relative;
        padding-left: 50% !important; 
        text-align: right;
    }
    
    td:before { 
        position: absolute;
        top: 15px;
        left: 15px;
        width: 45%; 
        padding-right: 10px; 
        white-space: nowrap;
        text-align: left;
        font-weight: bold;
        color: var(--accent-color);
        content: attr(data-label);
    }
    
    .pos-container {
        flex-direction: column;
        height: auto;
    }
    
    .cart-panel {
        order: -1; /* Cart on top in mobile or bottom depending on preference, usually bottom for POS but let's keep simplistic */
        margin-bottom: 20px;
    }
}