/* Retro Collections - Dark Theme (ZX Spectrum Style) */
/* Authentic ZX Spectrum color palette and aesthetic */

:root[data-theme="dark"], :root {
    /* ZX Spectrum Primary Colors */
    --color-primary: #00d8ff;          /* Spectrum Cyan */
    --color-primary-hover: #00ffff;    /* Bright Cyan */
    --color-primary-dim: #0080a0;
    
    /* ZX Spectrum Background - Classic black */
    --color-bg: #000000;
    --color-bg-secondary: #000080;     /* Spectrum Blue */
    --color-bg-tertiary: #000040;
    --color-bg-card: #000000;
    --color-bg-input: #000000;
    
    /* Text Colors - Spectrum palette */
    --color-text: #d0d0d0;
    --color-text-secondary: #c0c0c0;
    --color-text-muted: #808080;
    --color-text-accent: #00d8ff;      /* Cyan */
    
    /* Border Colors - Spectrum style */
    --color-border: #00d8ff;
    --color-border-focus: #ffff00;     /* Spectrum Yellow */
    
    /* Status Colors - ZX Spectrum palette */
    --color-success: #00ff00;          /* Spectrum Green */
    --color-warning: #ffff00;          /* Spectrum Yellow */
    --color-error: #ff0000;            /* Spectrum Red */
    --color-info: #00d8ff;             /* Spectrum Cyan */
    
    /* Category Colors - Spectrum palette */
    --color-software: #ff00ff;         /* Spectrum Magenta */
    --color-hardware: #00d8ff;         /* Spectrum Cyan */
    --color-books: #ffff00;            /* Spectrum Yellow */
    
    /* Shadows - CRT phosphor glow */
    --shadow-glow: 0 0 10px rgba(0, 216, 255, 0.5);
    --shadow-card: 0 0 0 2px #00d8ff;
    
    /* Pixel border style */
    --border-pixel: 2px solid;
}

/* Base Styles */
body {
    background-color: var(--color-bg);
    color: var(--color-text);
    margin: 0;
    padding: 0;
    min-height: 100vh;
    image-rendering: pixelated;
}

/* Scanline effect overlay - authentic CRT look */
body::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    background: repeating-linear-gradient(
        0deg,
        rgba(0, 0, 0, 0.15) 0px,
        rgba(0, 0, 0, 0.15) 1px,
        transparent 1px,
        transparent 3px
    );
    z-index: 9999;
}

/* CRT screen curvature effect */
body::after {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    background: radial-gradient(
        ellipse at center,
        transparent 0%,
        transparent 70%,
        rgba(0, 0, 0, 0.3) 100%
    );
    z-index: 9998;
}

/* Links */
a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color 0.1s, text-shadow 0.1s;
}

a:hover {
    color: var(--color-primary-hover);
    text-shadow: var(--shadow-glow);
}

/* Buttons - ZX Spectrum style */
.btn {
    display: inline-block;
    padding: 10px 20px;
    background-color: var(--color-bg);
    color: var(--color-primary);
    border: var(--border-pixel) var(--color-primary);
    cursor: pointer;
    text-transform: uppercase;
    transition: all 0.1s;
    position: relative;
}

.btn:hover {
    background-color: var(--color-primary);
    color: var(--color-bg);
    box-shadow: var(--shadow-glow);
}

.btn:active {
    transform: scale(0.98);
}

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

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

.btn-danger {
    border-color: var(--color-error);
    color: var(--color-error);
}

.btn-danger:hover {
    background-color: var(--color-error);
    color: var(--color-bg);
}

/* Cards - Spectrum border style */
.card {
    background-color: var(--color-bg-card);
    border: var(--border-pixel) var(--color-border);
    padding: 20px;
    margin-bottom: 20px;
    position: relative;
}

/* Double border effect like Spectrum loading screen */
.card::before {
    content: "";
    position: absolute;
    top: 4px;
    left: 4px;
    right: 4px;
    bottom: 4px;
    border: 1px solid var(--color-border);
    pointer-events: none;
    opacity: 0.5;
}

.card-header {
    border-bottom: var(--border-pixel) var(--color-border);
    padding-bottom: 10px;
    margin-bottom: 15px;
    color: var(--color-text-accent);
}

/* Forms */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    color: var(--color-text-accent);
    text-transform: uppercase;
}

.form-input, .form-select, .form-textarea {
    width: 100%;
    padding: 10px;
    background-color: var(--color-bg-input);
    color: var(--color-text);
    border: var(--border-pixel) var(--color-border);
    box-sizing: border-box;
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
    outline: none;
    border-color: var(--color-border-focus);
    box-shadow: 0 0 8px var(--color-warning);
}

.form-input::placeholder {
    color: var(--color-text-muted);
}

/* Tables */
.table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--color-bg-card);
    border: var(--border-pixel) var(--color-border);
}

.table th, .table td {
    padding: 10px;
    text-align: left;
    border: 1px solid var(--color-border);
}

.table th {
    background-color: var(--color-bg-secondary);
    color: var(--color-warning);
    text-transform: uppercase;
}

.table tr:hover {
    background-color: rgba(0, 216, 255, 0.1);
}

/* Navigation - Spectrum menu bar style */
.navbar {
    background-color: var(--color-bg);
    border-bottom: var(--border-pixel) var(--color-primary);
    padding: 12px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Rainbow stripe like Spectrum loading */
.navbar::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(
        90deg,
        #ff0000 0%, #ff0000 14.28%,
        #ff8000 14.28%, #ff8000 28.57%,
        #ffff00 28.57%, #ffff00 42.85%,
        #00ff00 42.85%, #00ff00 57.14%,
        #00d8ff 57.14%, #00d8ff 71.42%,
        #0000ff 71.42%, #0000ff 85.71%,
        #ff00ff 85.71%, #ff00ff 100%
    );
}

.navbar-brand {
    color: var(--color-primary);
    font-size: 0.8rem;
    text-shadow: var(--shadow-glow);
}

.navbar-nav {
    display: flex;
    gap: 15px;
    list-style: none;
    margin: 0;
    padding: 0;
    align-items: center;
}

.nav-link {
    color: var(--color-text);
    padding: 6px 10px;
    transition: all 0.1s;
    border: 1px solid transparent;
}

.nav-link:hover, .nav-link.active {
    color: var(--color-warning);
    border-color: var(--color-warning);
    text-shadow: 0 0 5px var(--color-warning);
}

/* Category badges - Spectrum colors */
.badge {
    display: inline-block;
    padding: 4px 8px;
    text-transform: uppercase;
    border: var(--border-pixel);
    background-color: var(--color-bg);
}

.badge-software {
    color: var(--color-software);
    border-color: var(--color-software);
}

.badge-hardware {
    color: var(--color-hardware);
    border-color: var(--color-hardware);
}

.badge-books {
    color: var(--color-books);
    border-color: var(--color-books);
}

/* Alerts - Spectrum style */
.alert {
    padding: 12px 16px;
    border: var(--border-pixel);
    margin-bottom: 20px;
    position: relative;
}

.alert::before {
    content: "►";
    margin-right: 8px;
}

.alert-success {
    background-color: rgba(0, 255, 0, 0.1);
    border-color: var(--color-success);
    color: var(--color-success);
}

.alert-error {
    background-color: rgba(255, 0, 0, 0.1);
    border-color: var(--color-error);
    color: var(--color-error);
}

.alert-warning {
    background-color: rgba(255, 255, 0, 0.1);
    border-color: var(--color-warning);
    color: var(--color-warning);
}

.alert-info {
    background-color: rgba(0, 216, 255, 0.1);
    border-color: var(--color-info);
    color: var(--color-info);
}

/* Pagination */
.pagination {
    display: flex;
    gap: 8px;
    justify-content: center;
    margin: 20px 0;
}

.pagination-item {
    padding: 8px 12px;
    border: var(--border-pixel) var(--color-border);
    color: var(--color-text);
    background-color: var(--color-bg);
}

.pagination-item:hover, .pagination-item.active {
    border-color: var(--color-warning);
    color: var(--color-warning);
    background-color: rgba(255, 255, 0, 0.1);
}

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

/* Grid */
.grid {
    display: grid;
    gap: 20px;
}

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

@media (max-width: 768px) {
    .grid-2, .grid-3, .grid-4 {
        grid-template-columns: 1fr;
    }
}

/* Thumbnail - pixelated */
.thumbnail {
    width: 80px;
    height: 80px;
    object-fit: cover;
    border: var(--border-pixel) var(--color-border);
    image-rendering: pixelated;
}

/* For sale indicator - blinking like Spectrum cursor */
.for-sale-badge {
    background-color: var(--color-warning);
    color: var(--color-bg);
    padding: 4px 8px;
    animation: spectrum-blink 0.64s step-end infinite;
}

@keyframes spectrum-blink {
    0%, 50% { opacity: 1; }
    50.01%, 100% { opacity: 0; }
}

/* Theme toggle button */
.theme-toggle {
    background: var(--color-bg);
    border: var(--border-pixel) var(--color-border);
    padding: 6px 10px;
    cursor: pointer;
    font-size: 1rem;
    color: var(--color-text);
}

.theme-toggle:hover {
    border-color: var(--color-warning);
    color: var(--color-warning);
}

/* Loading animation - Spectrum style stripes */
@keyframes spectrum-loading {
    0% { background-position: 0 0; }
    100% { background-position: 100% 0; }
}

.loading {
    background: repeating-linear-gradient(
        90deg,
        #ff0000, #ff8000, #ffff00, #00ff00, #00d8ff, #0000ff, #ff00ff,
        #ff0000
    );
    background-size: 200% 100%;
    animation: spectrum-loading 2s linear infinite;
    height: 4px;
}

/* Selection color */
::selection {
    background-color: var(--color-primary);
    color: var(--color-bg);
}