/**
 * CyberSec Academy - Modern Technique Cards
 * Glassmorphism + Neon Cyberpunk aesthetic with per-category colors
 */

/* =====================================================
   CATEGORY PAGE HEADER - Glass panel
   ===================================================== */
.category-page-header {
    position: relative;
    margin-bottom: 3rem;
    padding: 2.5rem;
    background: linear-gradient(
        145deg,
        rgba(0, 255, 136, 0.04) 0%,
        rgba(0, 0, 0, 0.3) 100%
    );
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(0, 255, 136, 0.1);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

/* Neon top accent */
.category-page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--primary), var(--secondary, #0ea5e9), transparent);
    box-shadow: 0 0 10px rgba(0, 255, 136, 0.3);
}

/* Radial glow */
.category-page-header::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(0, 255, 136, 0.08), transparent 70%);
    pointer-events: none;
}

.category-header-content {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    gap: 2rem;
}

/* Animated icon ring */
.category-icon-wrap {
    position: relative;
    width: 100px;
    height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.category-icon-bg {
    position: absolute;
    inset: 0;
    border-radius: 50%;
    background: linear-gradient(145deg, rgba(0, 255, 136, 0.15), rgba(0, 255, 136, 0.04));
    border: 2px solid rgba(0, 255, 136, 0.25);
    animation: categoryIconPulse 3s ease-in-out infinite;
}

.category-icon-bg::before {
    content: '';
    position: absolute;
    inset: -10px;
    border-radius: 50%;
    border: 2px dashed rgba(0, 255, 136, 0.15);
    animation: ringRotate 15s linear infinite;
}

@keyframes categoryIconPulse {
    0%, 100% { box-shadow: 0 0 20px rgba(0, 255, 136, 0.15); }
    50% { box-shadow: 0 0 40px rgba(0, 255, 136, 0.3); }
}

.category-icon {
    position: relative;
    font-size: 2.5rem;
    color: var(--primary);
    z-index: 1;
    filter: drop-shadow(0 0 8px rgba(0, 255, 136, 0.4));
}

.category-header-text h1 {
    font-size: 2rem;
    font-weight: var(--font-extrabold, 800);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.category-header-text h1 .title-badge {
    font-size: 0.7rem;
    padding: 0.3rem 0.8rem;
    background: rgba(0, 255, 136, 0.1);
    border: 1px solid rgba(0, 255, 136, 0.2);
    border-radius: var(--radius-full, 20px);
    color: var(--primary);
    font-weight: var(--font-semibold, 600);
    letter-spacing: 1px;
    font-family: var(--font-mono);
}

.category-header-text p {
    color: var(--text-muted);
    font-size: 1rem;
    line-height: 1.6;
    max-width: 500px;
}

/* Glass stat tiles */
.category-stats {
    display: flex;
    gap: 2rem;
    margin-left: auto;
}

.category-stat {
    text-align: center;
    padding: 1rem 1.5rem;
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-radius: var(--radius-sm);
    border: 1px solid var(--glass-border, rgba(255, 255, 255, 0.06));
    transition: all 0.3s ease;
}

.category-stat:hover {
    border-color: rgba(0, 255, 136, 0.2);
    box-shadow: var(--neon-green-sm, 0 0 15px rgba(0, 255, 136, 0.15));
}

.category-stat-value {
    display: block;
    font-size: 1.75rem;
    font-weight: var(--font-extrabold, 800);
    font-family: var(--font-mono);
    color: var(--primary);
    margin-bottom: 0.25rem;
    text-shadow: var(--neon-green-text, 0 0 10px rgba(0, 255, 136, 0.3));
}

.category-stat-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* =====================================================
   TECHNIQUE CARDS GRID
   ===================================================== */
.techniques-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 1.75rem;
}

/* =====================================================
   MODERN TECHNIQUE CARD - Glass
   ===================================================== */
.technique-card-modern {
    position: relative;
    background: linear-gradient(
        145deg,
        rgba(18, 18, 26, 0.6) 0%,
        rgba(10, 10, 15, 0.4) 100%
    );
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border, rgba(255, 255, 255, 0.06));
    border-radius: var(--radius-lg);
    padding: 0;
    cursor: pointer;
    transition: all 0.4s var(--ease-out-expo, cubic-bezier(0.4, 0, 0.2, 1));
    overflow: hidden;
    box-shadow: var(--glass-inner-light, inset 0 1px 0 rgba(255, 255, 255, 0.04));
}

/* Neon top accent - uses category color */
.technique-card-modern::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--card-accent, var(--primary));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s var(--ease-out-expo, ease);
    box-shadow: 0 0 8px var(--card-accent, rgba(0, 255, 136, 0.4));
    z-index: 1;
}

/* Radial glow overlay */
.technique-card-modern::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 50% 0%, rgba(0, 255, 136, 0.06), transparent 60%);
    opacity: 0;
    transition: opacity 0.4s ease;
    pointer-events: none;
}

.technique-card-modern:hover {
    transform: translateY(-8px) scale(1.01);
    border-color: rgba(0, 255, 136, 0.25);
    box-shadow:
        0 20px 40px rgba(0, 0, 0, 0.4),
        0 0 30px rgba(0, 255, 136, 0.08),
        inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

.technique-card-modern:hover::before {
    transform: scaleX(1);
}

.technique-card-modern:hover::after {
    opacity: 1;
}

/* Card Top */
.card-top {
    position: relative;
    padding: 1.5rem 1.5rem 1rem;
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

/* Glass icon container */
.card-icon-modern {
    position: relative;
    width: 65px;
    height: 65px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(145deg, rgba(0, 255, 136, 0.12), rgba(14, 165, 233, 0.06));
    border: 1px solid rgba(0, 255, 136, 0.15);
    border-radius: var(--radius);
    font-size: 1.75rem;
    transition: all 0.4s ease;
}

.card-icon-modern::before {
    content: '';
    position: absolute;
    inset: -3px;
    border-radius: calc(var(--radius) + 3px);
    border: 1px dashed rgba(0, 255, 136, 0.1);
    opacity: 0;
    transition: opacity 0.3s;
}

.technique-card-modern:hover .card-icon-modern {
    background: linear-gradient(145deg, rgba(0, 255, 136, 0.2), rgba(14, 165, 233, 0.1));
    border-color: rgba(0, 255, 136, 0.3);
    transform: scale(1.05) rotate(-3deg);
    box-shadow: var(--neon-green-sm, 0 0 15px rgba(0, 255, 136, 0.15));
}

.technique-card-modern:hover .card-icon-modern::before {
    opacity: 1;
    animation: ringRotate 10s linear infinite;
}

.card-info {
    flex: 1;
    min-width: 0;
}

.card-title-modern {
    font-size: 1.15rem;
    font-weight: var(--font-bold, 700);
    color: var(--text, #e4e4e7);
    margin-bottom: 0.35rem;
    line-height: 1.3;
    transition: color 0.3s;
}

.technique-card-modern:hover .card-title-modern {
    color: #fff;
}

.card-meta {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

/* Glass category tag */
.card-category-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.25rem 0.6rem;
    background: rgba(0, 255, 136, 0.06);
    border: 1px solid rgba(0, 255, 136, 0.12);
    border-radius: 6px;
    font-size: 0.7rem;
    color: var(--primary);
    font-weight: var(--font-semibold, 600);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-family: var(--font-mono);
}

.card-category-tag i {
    font-size: 0.6rem;
}

/* Card Body */
.card-body-modern {
    padding: 0 1.5rem 1rem;
}

.card-description-modern {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.65;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Card Footer - Glass */
.card-footer-modern {
    padding: 1rem 1.5rem;
    background: rgba(0, 0, 0, 0.2);
    border-top: 1px solid var(--glass-border, rgba(255, 255, 255, 0.04));
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Difficulty Badge - Glass */
.difficulty-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: var(--font-bold, 700);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: all 0.3s ease;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.difficulty-badge i {
    font-size: 0.65rem;
}

.difficulty-badge.fillestar {
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.15), rgba(34, 197, 94, 0.06));
    color: #22c55e;
    border: 1px solid rgba(34, 197, 94, 0.25);
}

.difficulty-badge.mesatar {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.15), rgba(245, 158, 11, 0.06));
    color: #f59e0b;
    border: 1px solid rgba(245, 158, 11, 0.25);
}

.difficulty-badge.ekspert {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.15), rgba(239, 68, 68, 0.06));
    color: #ef4444;
    border: 1px solid rgba(239, 68, 68, 0.25);
}

.technique-card-modern:hover .difficulty-badge {
    transform: scale(1.05);
}

/* Progress Status */
.card-status {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.score-display {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: var(--font-semibold, 600);
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 0.35rem;
    text-shadow: var(--neon-green-text, 0 0 10px rgba(0, 255, 136, 0.3));
}

.score-display i {
    font-size: 0.75rem;
}

.completion-check {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--glass-border, rgba(255, 255, 255, 0.06));
    transition: all 0.3s ease;
    position: relative;
}

.completion-check::before {
    content: '';
    position: absolute;
    inset: -4px;
    border-radius: 50%;
    border: 2px solid transparent;
    transition: border-color 0.3s;
}

.completion-check.completed {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--dark);
    box-shadow: var(--neon-green-sm, 0 0 15px rgba(0, 255, 136, 0.15));
}

.completion-check.completed::before {
    border-color: rgba(0, 255, 136, 0.3);
    animation: checkPulse 2s ease-in-out infinite;
}

@keyframes checkPulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.2); opacity: 0.5; }
}

.completion-check i {
    font-size: 0.85rem;
}

/* Locked Card */
.technique-card-modern.locked {
    opacity: 0.5;
    cursor: not-allowed;
}

.technique-card-modern.locked:hover {
    transform: none;
    box-shadow: var(--glass-inner-light, none);
    border-color: var(--glass-border, rgba(255, 255, 255, 0.06));
}

.technique-card-modern.locked::before,
.technique-card-modern.locked::after {
    display: none;
}

.technique-card-modern.locked .card-icon-modern {
    filter: grayscale(1);
}

.lock-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 36px;
    height: 36px;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid var(--glass-border, rgba(255, 255, 255, 0.06));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    color: var(--text-muted);
    z-index: 2;
}

/* Shimmer sweep effect */
.card-shine {
    position: absolute;
    top: 0;
    left: -100%;
    width: 50%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.04), transparent);
    transition: left 0.6s ease;
    pointer-events: none;
}

.technique-card-modern:hover .card-shine {
    left: 100%;
}

/* Per-category neon accent colors */
.technique-card-modern[data-category="web"] { --card-accent: #00ff88; }
.technique-card-modern[data-category="network"] { --card-accent: #0ea5e9; }
.technique-card-modern[data-category="crypto"] { --card-accent: #a855f7; }
.technique-card-modern[data-category="forensics"] { --card-accent: #f59e0b; }
.technique-card-modern[data-category="osint"] { --card-accent: #ec4899; }
.technique-card-modern[data-category="cloud"] { --card-accent: #06b6d4; }
.technique-card-modern[data-category="pentest"] { --card-accent: #ef4444; }
.technique-card-modern[data-category="reversing"] { --card-accent: #8b5cf6; }
.technique-card-modern[data-category="malware"] { --card-accent: #f97316; }
.technique-card-modern[data-category="mobile"] { --card-accent: #22d3ee; }
.technique-card-modern[data-category="iot"] { --card-accent: #84cc16; }
.technique-card-modern[data-category="misc"] { --card-accent: #6366f1; }

/* =====================================================
   FILTER BAR - Glass
   ===================================================== */
.techniques-filter-bar {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
    padding: 1rem 1.5rem;
    background: rgba(0, 0, 0, 0.25);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border, rgba(255, 255, 255, 0.06));
    border-radius: var(--radius-lg);
}

.filter-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: var(--font-semibold, 600);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-family: var(--font-mono);
}

.filter-buttons {
    display: flex;
    gap: 0.5rem;
}

.techniques-filter-bar .filter-btn {
    padding: 0.5rem 1rem;
    background: rgba(0, 255, 136, 0.04);
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    font-size: 0.85rem;
    font-weight: var(--font-medium, 500);
    cursor: pointer;
    transition: all 0.3s ease;
}

.techniques-filter-bar .filter-btn:hover {
    background: rgba(0, 255, 136, 0.08);
    color: var(--text, #e4e4e7);
}

.techniques-filter-bar .filter-btn.active {
    background: rgba(0, 255, 136, 0.12);
    border-color: rgba(0, 255, 136, 0.25);
    color: var(--primary);
    box-shadow: var(--neon-green-sm, 0 0 15px rgba(0, 255, 136, 0.15));
}

/* Glass search input */
.filter-search {
    margin-left: auto;
    position: relative;
}

.filter-search input {
    width: 250px;
    padding: 0.6rem 1rem 0.6rem 2.5rem;
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid var(--glass-border, rgba(255, 255, 255, 0.06));
    border-radius: var(--radius-sm);
    color: var(--text, #e4e4e7);
    font-size: 0.9rem;
    transition: all 0.3s ease;
    outline: none;
}

.filter-search input:focus {
    border-color: rgba(0, 255, 136, 0.4);
    background: rgba(0, 0, 0, 0.4);
    box-shadow: var(--neon-green-sm, 0 0 15px rgba(0, 255, 136, 0.15));
}

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

.filter-search i {
    position: absolute;
    left: 0.85rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 0.9rem;
    transition: color 0.3s;
}

.filter-search input:focus ~ i,
.filter-search:focus-within i {
    color: var(--primary);
}

/* =====================================================
   EMPTY STATE - Glass
   ===================================================== */
.empty-category-modern {
    text-align: center;
    padding: 4rem 2rem;
    background: rgba(0, 0, 0, 0.15);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px dashed var(--glass-border, rgba(255, 255, 255, 0.06));
    border-radius: var(--radius-lg);
}

.empty-category-modern .empty-icon {
    width: 100px;
    height: 100px;
    margin: 0 auto 1.5rem;
    background: rgba(0, 255, 136, 0.04);
    border: 1px solid rgba(0, 255, 136, 0.08);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: var(--text-muted);
}

.empty-category-modern h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--text, #e4e4e7);
}

.empty-category-modern p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* =====================================================
   RESPONSIVE
   ===================================================== */
@media (max-width: 1024px) {
    .category-header-content {
        flex-wrap: wrap;
    }

    .category-stats {
        margin-left: 0;
        margin-top: 1.5rem;
        width: 100%;
        justify-content: center;
    }

    .techniques-grid {
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    }
}

@media (max-width: 768px) {
    .category-page-header {
        padding: 1.5rem;
    }

    .category-header-content {
        flex-direction: column;
        text-align: center;
    }

    .category-header-text h1 {
        justify-content: center;
    }

    .category-header-text p {
        margin: 0 auto;
    }

    .category-stats {
        gap: 1rem;
    }

    .category-stat {
        padding: 0.75rem 1rem;
    }

    .techniques-grid {
        grid-template-columns: 1fr;
        gap: 1.25rem;
    }

    .techniques-filter-bar {
        flex-wrap: wrap;
    }

    .filter-search {
        margin-left: 0;
        width: 100%;
    }

    .filter-search input {
        width: 100%;
    }

    .filter-buttons {
        flex-wrap: wrap;
    }
}

/* =====================================================
   ANIMATIONS
   ===================================================== */
@keyframes cardAppear {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.technique-card-modern {
    animation: cardAppear 0.5s var(--ease-out-expo, ease) forwards;
}

.technique-card-modern:nth-child(1) { animation-delay: 0.05s; }
.technique-card-modern:nth-child(2) { animation-delay: 0.1s; }
.technique-card-modern:nth-child(3) { animation-delay: 0.15s; }
.technique-card-modern:nth-child(4) { animation-delay: 0.2s; }
.technique-card-modern:nth-child(5) { animation-delay: 0.25s; }
.technique-card-modern:nth-child(6) { animation-delay: 0.3s; }
.technique-card-modern:nth-child(7) { animation-delay: 0.35s; }
.technique-card-modern:nth-child(8) { animation-delay: 0.4s; }
.technique-card-modern:nth-child(9) { animation-delay: 0.45s; }
.technique-card-modern:nth-child(10) { animation-delay: 0.5s; }
.technique-card-modern:nth-child(11) { animation-delay: 0.55s; }
.technique-card-modern:nth-child(12) { animation-delay: 0.6s; }

@supports not (backdrop-filter: blur(1px)) {
    .tech-page-header { background: rgba(18, 18, 26, 0.95); }
    .tech-filter-bar { background: rgba(18, 18, 26, 0.95); }
    .tech-stat-tile { background: rgba(18, 18, 26, 0.95); }
}