:root {
    /* پالت رنگی اختصاصی TokenFactory (Dark Mode & Cyberpunk Accent) */
    --bg-gradient-start: #030712; /* Slate 950 */
    --bg-gradient-end: #0b1528;   /* Deep Blue Dark */
    --card-bg: rgba(15, 23, 42, 0.65); /* Semi-transparent Slate 900 */
    --card-border: rgba(51, 65, 85, 0.5); /* Slate 700 with alpha */
    
    --text-primary: #f8fafc;   /* Slate 50 */
    --text-secondary: #94a3b8; /* Slate 400 */
    --text-muted: #64748b;     /* Slate 500 */
    
    --accent-color: #f97316;   /* Orange Accent */
    --accent-glow: rgba(249, 115, 22, 0.15);
    --accent-hover: #ea580c;   /* Accent Hover */
    
    --success-color: #10b981;  /* Emerald 500 */
    --success-glow: rgba(16, 185, 129, 0.15);
    
    --font-fa: 'Vazirmatn', system-ui, -apple-system, sans-serif;
    --font-en: 'JetBrains Mono', monospace;
}

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

body {
    background: radial-gradient(circle at top, var(--bg-gradient-end), var(--bg-gradient-start));
    color: var(--text-primary);
    font-family: var(--font-fa);
    line-height: 1.7;
    min-height: 100vh;
    padding: 3rem 1.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.container {
    width: 100%;
    max-width: 950px;
    margin: 0 auto;
}

/* هدر */
header {
    text-align: center;
    margin-bottom: 3.5rem;
}

header h1 {
    font-size: 2.8rem;
    font-weight: 900;
    letter-spacing: -0.05em;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    display: inline-flex;
    gap: 0.25rem;
    align-items: center;
}

header h1 span.logo-accent {
    color: var(--accent-color);
    text-shadow: 0 0 20px var(--accent-glow);
}

header p {
    color: var(--text-secondary);
    font-size: 1rem;
    max-width: 600px;
    margin: 0 auto;
    font-weight: 300;
}

/* تب‌ها */
.tabs-nav {
    display: flex;
    background: rgba(15, 23, 42, 0.4);
    border: 1px solid var(--card-border);
    border-radius: 50px;
    padding: 0.35rem;
    margin-bottom: 2.5rem;
    gap: 0.25rem;
}

.tab-trigger {
    flex: 1;
    background: none;
    border: none;
    color: var(--text-secondary);
    font-family: var(--font-fa);
    font-weight: 700;
    font-size: 0.95rem;
    padding: 0.85rem 1.5rem;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    text-align: center;
}

.tab-trigger:hover {
    color: var(--text-primary);
}

.tab-trigger.active {
    background-color: var(--accent-color);
    color: #ffffff;
    box-shadow: 0 4px 12px var(--accent-glow);
}

.tab-panel {
    display: none;
    animation: fadeIn 0.4s ease;
}

.tab-panel.active {
    display: block;
}

/* کارت‌ها */
.cyber-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: 1.25rem;
    padding: 2.5rem;
    margin-bottom: 2rem;
    position: relative;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.cyber-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent-color), transparent);
    opacity: 0.5;
}

.card-header-title {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.card-header-title::before {
    content: '';
    display: inline-block;
    width: 6px;
    height: 18px;
    background: var(--accent-color);
    border-radius: 4px;
    box-shadow: 0 0 10px var(--accent-color);
}

/* فیلدها */
.form-group {
    margin-bottom: 1.75rem;
}

.form-label {
    display: block;
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
}

textarea, input[type="text"], select {
    width: 100%;
    background-color: rgba(3, 7, 18, 0.6);
    color: var(--text-primary);
    border: 1px solid var(--card-border);
    border-radius: 0.75rem;
    padding: 1.1rem;
    font-family: var(--font-fa);
    font-size: 1rem;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    resize: vertical;
}

textarea:focus, input[type="text"]:focus, select:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 15px var(--accent-glow);
    background-color: rgba(3, 7, 18, 0.9);
}

.mono-field {
    font-family: var(--font-en) !important;
    direction: ltr;
    letter-spacing: 0.03em;
}

/* دکمه‌ها */
.cyber-btn {
    background-color: var(--accent-color);
    color: #ffffff;
    font-family: var(--font-fa);
    font-weight: 700;
    font-size: 1rem;
    border: none;
    border-radius: 0.75rem;
    padding: 1.1rem 2rem;
    cursor: pointer;
    transition: all 0.2s ease;
    width: 100%;
    text-align: center;
    box-shadow: 0 4px 15px var(--accent-glow);
}

.cyber-btn:hover {
    background-color: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(249, 115, 22, 0.25);
}

.cyber-btn:active {
    transform: translateY(0);
}

/* گرید ستون‌های فیزیکی */
.grid-layout {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.25rem;
    margin-top: 2rem;
}

@media (max-width: 800px) {
    .grid-layout {
        grid-template-columns: repeat(2, 1fr);
    }
}

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

.grid-column-box {
    background: rgba(3, 7, 18, 0.5);
    border: 1px solid var(--card-border);
    border-radius: 0.75rem;
    padding: 1.25rem;
    text-align: center;
    transition: border-color 0.3s ease;
}

.grid-column-box:hover {
    border-color: rgba(249, 115, 22, 0.3);
}

.column-header {
    font-family: var(--font-en);
    font-weight: 700;
    font-size: 0.85rem;
    color: var(--accent-color);
    margin-bottom: 1rem;
    text-transform: uppercase;
    border-bottom: 1px solid var(--card-border);
    padding-bottom: 0.5rem;
    letter-spacing: 0.05em;
}

.binary-output-stream {
    font-family: var(--font-en);
    font-size: 1rem;
    color: var(--text-primary);
    line-height: 1.5;
    word-break: break-all;
    white-space: pre-wrap;
    letter-spacing: 3px;
    direction: ltr;
}

/* باکس‌های وضعیت و هشدار */
.security-banner {
    background: rgba(249, 115, 22, 0.03);
    border: 1px dashed rgba(249, 115, 22, 0.25);
    border-radius: 0.75rem;
    padding: 1.25rem;
    margin-bottom: 2rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
    display: flex;
    gap: 0.75rem;
    align-items: flex-start;
}

.security-banner strong {
    color: var(--accent-color);
}

.success-banner {
    background: rgba(16, 185, 129, 0.03);
    border: 1px dashed rgba(16, 185, 129, 0.25);
    border-radius: 0.75rem;
    padding: 1.25rem;
    margin-top: 1.5rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.success-banner strong {
    color: var(--success-color);
}

/* فوتر */
footer {
    text-align: center;
    margin-top: auto;
    padding-top: 4rem;
    color: var(--text-muted);
    font-size: 0.85rem;
    font-weight: 300;
    letter-spacing: 0.02em;
}

footer a {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 700;
    transition: color 0.2s ease;
}

footer a:hover {
    color: var(--accent-hover);
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(5px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}