/* ═══════════════════════════════════════════════════════════════════════════════
   CATEGORY NAVIGATION - SHARED BASE STYLES
   Phase 29.8: Category Navigation System

   Used by:
   - Admin Operations (orange): admin_ops_nav.html
   - Development Tools (cyan): dev_tools_nav.html
   - Admin Tools (red): admin_tools_nav.html
   ═══════════════════════════════════════════════════════════════════════════════ */

/* ═══════════════════════════════════════════════════════════════════════════════
   PAGE TRANSITION OVERLAY (BASE)
   ═══════════════════════════════════════════════════════════════════════════════ */
.page-transition-overlay {
    position: fixed;
    inset: 0;
    background: #000;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.page-transition-overlay.active {
    opacity: 1;
    visibility: visible;
}

.transition-content {
    text-align: center;
}

.transition-logo {
    font-family: 'Orbitron', sans-serif;
    font-size: 2rem;
    font-weight: 900;
    letter-spacing: 0.2em;
    margin-bottom: 24px;
    animation: transitionPulse 1s ease-in-out infinite;
}

@keyframes transitionPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.transition-bar {
    width: 200px;
    height: 4px;
    border-radius: 2px;
    margin: 0 auto 16px;
    overflow: hidden;
}

.transition-progress {
    height: 100%;
    width: 0;
    border-radius: 2px;
    animation: transitionLoad 0.8s ease-out forwards;
}

@keyframes transitionLoad {
    0% { width: 0; }
    100% { width: 100%; }
}

.transition-text {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    letter-spacing: 0.2em;
}

/* ═══════════════════════════════════════════════════════════════════════════════
   CATEGORY NAVIGATION BAR (BASE)
   ═══════════════════════════════════════════════════════════════════════════════ */
.category-nav {
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 24px;
    background: linear-gradient(180deg, rgba(0, 0, 0, 0.95) 0%, rgba(0, 0, 0, 0.85) 100%);
    backdrop-filter: blur(10px);
    margin-bottom: 24px;
}

.category-nav::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
}

/* Nav Left - Back Button */
.nav-left {
    flex: 1;
}

.nav-back-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: transparent;
    border: 1px solid rgba(0, 255, 65, 0.3);
    border-radius: 8px;
    color: #00FF41;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    letter-spacing: 0.1em;
    text-decoration: none;
    text-transform: uppercase;
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.nav-back-btn:hover {
    background: rgba(0, 255, 65, 0.1);
    border-color: rgba(0, 255, 65, 0.5);
    box-shadow: 0 0 20px rgba(0, 255, 65, 0.2);
    transform: translateX(-3px);
}

.nav-back-btn i {
    width: 16px;
    height: 16px;
}

/* Nav Center - Category Label */
.nav-center {
    flex: 1;
    text-align: center;
}

.nav-category-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: 'Orbitron', sans-serif;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.2em;
}

.nav-category-label i {
    width: 18px;
    height: 18px;
}

/* Nav Right - Module Buttons */
.nav-right {
    flex: 1;
    display: flex;
    justify-content: flex-end;
    gap: 8px;
}

.nav-module-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    background: transparent;
    border: 1px solid;
    border-radius: 8px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.65rem;
    letter-spacing: 0.05em;
    text-decoration: none;
    text-transform: uppercase;
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
    overflow: hidden;
}

.nav-module-btn::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    transition: width 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.nav-module-btn:hover::before {
    width: 60%;
}

.nav-module-btn.active::before {
    width: 80%;
}

.nav-module-btn i {
    width: 14px;
    height: 14px;
}

/* ═══════════════════════════════════════════════════════════════════════════════
   CATEGORY CONTAINER & CONTENT
   ═══════════════════════════════════════════════════════════════════════════════ */
.category-container {
    min-height: 100vh;
    background: #010409;
}

.category-content {
    padding: 0 24px 24px;
    max-width: 1800px;
    margin: 0 auto;
}

.category-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 32px;
    padding-bottom: 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.category-header i {
    color: inherit;
}

.category-header-text h1 {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    margin: 0;
}

.category-header-text p {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.5);
    margin: 4px 0 0;
    letter-spacing: 0.1em;
}

/* ═══════════════════════════════════════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════════════════════════════════════ */
@media (max-width: 900px) {
    .category-nav {
        flex-wrap: wrap;
        gap: 12px;
        padding: 12px 16px;
    }

    .nav-left, .nav-center, .nav-right {
        flex: none;
    }

    .nav-center {
        order: -1;
        width: 100%;
        margin-bottom: 8px;
    }

    .nav-module-btn span {
        display: none;
    }

    .nav-module-btn {
        padding: 10px;
    }

    .nav-module-btn i {
        width: 18px;
        height: 18px;
    }
}

@media (max-width: 500px) {
    .nav-back-btn span {
        display: none;
    }

    .nav-back-btn {
        padding: 10px;
    }

    .category-content {
        padding: 0 16px 16px;
    }

    .category-header {
        flex-direction: column;
        text-align: center;
        gap: 12px;
    }
}