/* ============================================
   KELAJAK MUHANDISLARI - Competitions Styles
   Professional Competition Category Styling
   ============================================ */

/* ============ COMPETITIONS SECTION ============ */
.competitions-section {
    padding: var(--space-24) 0;
    background: var(--bg-secondary);
    position: relative;
}

/* Category Navigation */
.category-nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-3);
    margin-bottom: var(--space-10);
}

.category-btn {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-5);
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    font-family: var(--font-display);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    cursor: pointer;
    transition: var(--transition-base);
}

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

.category-btn.active {
    background: var(--gradient-blue);
    border-color: transparent;
    color: white;
    box-shadow: var(--shadow-primary);
}

.category-btn .icon {
    width: 24px;
    height: 24px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
}

.category-btn .count {
    background: rgba(255, 255, 255, 0.2);
    padding: 2px 8px;
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
}

/* Competition Categories Grid */
.competitions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(380px, 100%), 1fr));
    gap: var(--space-6);
}

/* Category Card - Professional Design */
.category-card {
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.category-card.reveal {
    opacity: 0;
    transform: translateY(30px);
}

.category-card.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

.category-card:hover {
    border-color: var(--border-accent);
    box-shadow: 0 20px 60px rgba(0, 102, 255, 0.15);
}

.category-header {
    padding: var(--space-6);
    background: linear-gradient(135deg, rgba(0, 102, 255, 0.08), rgba(0, 163, 163, 0.08));
    border-bottom: 1px solid var(--border-primary);
    display: flex;
    align-items: center;
    gap: var(--space-4);
    cursor: pointer;
    transition: var(--transition-base);
}

.category-header:hover {
    background: linear-gradient(135deg, rgba(0, 102, 255, 0.12), rgba(0, 163, 163, 0.12));
}

.category-icon {
    width: 56px;
    height: 56px;
    background: transparent;
    border-radius: var(--radius-lg);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.5rem;
    flex-shrink: 0;
    position: relative;
    transition: var(--transition-base);
}

/* Premium gradient border for category icons */
.category-icon::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    padding: 1.5px;
    background: linear-gradient(
        135deg,
        rgba(59, 130, 246, 0.5) 0%,
        rgba(99, 102, 241, 0.4) 50%,
        rgba(139, 92, 246, 0.3) 100%
    );
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    transition: var(--transition-base);
}

.category-icon .icon {
    color: #60a5fa;
    transition: var(--transition-base);
}

.category-card:hover .category-icon::before {
    background: linear-gradient(
        135deg,
        rgba(59, 130, 246, 0.7) 0%,
        rgba(99, 102, 241, 0.6) 50%,
        rgba(139, 92, 246, 0.5) 100%
    );
}

.category-card:hover .category-icon .icon {
    transform: scale(1.08);
}

.category-info {
    flex: 1;
}

.category-title {
    font-family: var(--font-display);
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
    margin-bottom: var(--space-1);
}

.category-count {
    font-size: var(--text-sm);
    color: var(--primary);
}

.category-toggle {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    border: 1px solid var(--border-secondary);
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-secondary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-base);
}

.category-toggle:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-alpha);
}

.category-toggle i {
    transition: transform 0.3s ease;
}

.category-card.collapsed .category-toggle i {
    transform: rotate(-90deg);
}

/* Sub-competitions with Smooth Animation */
.sub-competitions {
    max-height: 600px;
    overflow: hidden;
    transition: max-height 0.5s cubic-bezier(0.4, 0, 0.2, 1),
                padding 0.3s ease,
                opacity 0.3s ease;
    padding: var(--space-4);
    opacity: 1;
}

.category-card.collapsed .sub-competitions {
    max-height: 0;
    padding: 0 var(--space-4);
    opacity: 0;
}

.competition-item {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-4);
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid transparent;
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-2);
    cursor: pointer;
    transition: var(--transition-base);
}

.competition-item:last-child {
    margin-bottom: 0;
}

.competition-item:hover {
    background: var(--primary-alpha);
    border-color: var(--border-accent);
    transform: translateX(8px);
}

.competition-number {
    width: 36px;
    height: 36px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    display: flex;
    justify-content: center;
    align-items: center;
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--primary);
    flex-shrink: 0;
    transition: var(--transition-base);
}

.competition-item:hover .competition-number {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

.competition-details {
    flex: 1;
}

.competition-name {
    font-weight: var(--font-semibold);
    font-size: var(--text-sm);
    color: var(--text-primary);
    margin-bottom: 2px;
}

.competition-summary {
    font-size: var(--text-xs);
    color: var(--text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.competition-meta {
    display: flex;
    gap: var(--space-3);
    flex-wrap: wrap;
    row-gap: 2px;
    font-size: var(--text-xs);
    color: var(--text-muted);
    margin-top: 2px;
}

.competition-meta span {
    display: flex;
    align-items: center;
    gap: 4px;
}

.competition-arrow {
    color: var(--text-muted);
    transition: var(--transition-base);
}

.competition-item:hover .competition-arrow {
    color: var(--primary);
    transform: translateX(4px);
}

/* Category Color Variants - Premium border style */
.category-aviation .category-icon::before {
    background: linear-gradient(135deg, rgba(34, 211, 238, 0.5) 0%, rgba(59, 130, 246, 0.4) 50%, rgba(99, 102, 241, 0.3) 100%);
}
.category-aviation .category-icon .icon {
    color: #22d3ee;
}
.category-aviation:hover .category-icon::before {
    background: linear-gradient(135deg, rgba(34, 211, 238, 0.7) 0%, rgba(59, 130, 246, 0.6) 50%, rgba(99, 102, 241, 0.5) 100%);
}
.category-aviation:hover {
    border-color: rgba(34, 211, 238, 0.3);
}

.category-agriculture .category-icon::before {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.5) 0%, rgba(34, 197, 94, 0.4) 50%, rgba(74, 222, 128, 0.3) 100%);
}
.category-agriculture .category-icon .icon {
    color: #10b981;
}
.category-agriculture:hover .category-icon::before {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.7) 0%, rgba(34, 197, 94, 0.6) 50%, rgba(74, 222, 128, 0.5) 100%);
}
.category-agriculture:hover {
    border-color: rgba(16, 185, 129, 0.3);
}

.category-vehicles .category-icon::before {
    background: linear-gradient(135deg, rgba(251, 191, 36, 0.5) 0%, rgba(245, 158, 11, 0.4) 50%, rgba(217, 119, 6, 0.3) 100%);
}
.category-vehicles .category-icon .icon {
    color: #fbbf24;
}
.category-vehicles:hover .category-icon::before {
    background: linear-gradient(135deg, rgba(251, 191, 36, 0.7) 0%, rgba(245, 158, 11, 0.6) 50%, rgba(217, 119, 6, 0.5) 100%);
}
.category-vehicles:hover {
    border-color: rgba(251, 191, 36, 0.3);
}

.category-robotics .category-icon::before {
    background: linear-gradient(135deg, rgba(168, 85, 247, 0.5) 0%, rgba(139, 92, 246, 0.4) 50%, rgba(124, 58, 237, 0.3) 100%);
}
.category-robotics .category-icon .icon {
    color: #a855f7;
}
.category-robotics:hover .category-icon::before {
    background: linear-gradient(135deg, rgba(168, 85, 247, 0.7) 0%, rgba(139, 92, 246, 0.6) 50%, rgba(124, 58, 237, 0.5) 100%);
}
.category-robotics:hover {
    border-color: rgba(168, 85, 247, 0.3);
}

.category-construction .category-icon::before {
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.5) 0%, rgba(184, 150, 46, 0.4) 50%, rgba(161, 130, 40, 0.3) 100%);
}
.category-construction .category-icon .icon {
    color: #d4af37;
}
.category-construction:hover .category-icon::before {
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.7) 0%, rgba(184, 150, 46, 0.6) 50%, rgba(161, 130, 40, 0.5) 100%);
}
.category-construction:hover {
    border-color: rgba(212, 175, 55, 0.3);
}

.category-mechanics .category-icon::before {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.5) 0%, rgba(99, 102, 241, 0.4) 50%, rgba(139, 92, 246, 0.3) 100%);
}
.category-mechanics .category-icon .icon {
    color: #60a5fa;
}
.category-mechanics:hover .category-icon::before {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.7) 0%, rgba(99, 102, 241, 0.6) 50%, rgba(139, 92, 246, 0.5) 100%);
}
.category-mechanics:hover {
    border-color: rgba(59, 130, 246, 0.3);
}

/* ============ COMPETITION DETAIL MODAL ============ */
.competition-modal .modal {
    max-width: 720px;
}

.competition-modal-header {
    padding: var(--space-8);
    background: linear-gradient(135deg, rgba(0, 102, 255, 0.1), rgba(0, 163, 163, 0.1));
    border-bottom: 1px solid var(--border-primary);
    position: relative;
}

.competition-modal-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-blue);
    border-radius: var(--radius-xl);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 2.5rem;
    margin-bottom: var(--space-6);
    box-shadow: var(--shadow-primary);
}

.competition-modal-title {
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    font-weight: var(--font-bold);
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-2);
}

.competition-modal-category {
    font-size: var(--text-sm);
    color: var(--primary);
    font-weight: var(--font-medium);
}

.competition-modal-body {
    padding: var(--space-8);
    max-height: 60vh;
    overflow-y: auto;
}

/* Info Grid */
.info-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-4);
    margin-bottom: var(--space-8);
}

.info-item {
    text-align: center;
    padding: var(--space-5);
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-primary);
}

.info-label {
    font-size: var(--text-xs);
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: var(--tracking-wider);
    margin-bottom: var(--space-2);
}

.info-value {
    font-family: var(--font-display);
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
    color: var(--primary);
}

/* Details Sections */
.detail-section {
    margin-bottom: var(--space-8);
}

.detail-section:last-child {
    margin-bottom: 0;
}

.detail-title {
    font-family: var(--font-display);
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
    margin-bottom: var(--space-4);
    padding-bottom: var(--space-3);
    border-bottom: 1px solid var(--border-primary);
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.detail-title i {
    color: var(--primary);
}

.detail-content {
    color: var(--text-secondary);
    font-size: var(--text-sm);
    line-height: var(--leading-relaxed);
}

.detail-content ul {
    list-style: none;
    padding: 0;
}

.detail-content li {
    padding: var(--space-2) 0;
    padding-left: var(--space-6);
    position: relative;
}

.detail-content li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 6px;
    height: 6px;
    background: var(--primary);
    border-radius: var(--radius-full);
}

/* Tech Tags */
.tech-requirements {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.tech-tag {
    padding: var(--space-2) var(--space-4);
    background: var(--primary-alpha);
    border: 1px solid var(--border-accent);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    color: var(--primary);
    font-weight: var(--font-medium);
}

/* Scoring Table */
.scoring-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--text-sm);
}

.scoring-table th,
.scoring-table td {
    padding: var(--space-4);
    text-align: left;
    border-bottom: 1px solid var(--border-primary);
}

.scoring-table th {
    color: var(--text-muted);
    font-weight: var(--font-medium);
    text-transform: uppercase;
    font-size: var(--text-xs);
    letter-spacing: var(--tracking-wider);
    background: var(--bg-tertiary);
}

.scoring-table td {
    color: var(--text-secondary);
}

.scoring-table .points {
    color: var(--primary);
    font-family: var(--font-display);
    font-weight: var(--font-semibold);
}

.scoring-table tr:hover td {
    background: rgba(0, 102, 255, 0.05);
}

/* Register Button */
.competition-register-btn {
    width: 100%;
    margin-top: var(--space-8);
}

/* ============ RESPONSIVE ============ */
@media (max-width: 1024px) {
    .competitions-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .category-nav {
        justify-content: flex-start;
        overflow-x: auto;
        flex-wrap: nowrap;
        padding-bottom: var(--space-2);
        -webkit-overflow-scrolling: touch;
    }

    .category-btn {
        flex-shrink: 0;
        padding: var(--space-2) var(--space-4);
        font-size: var(--text-xs);
    }

    .info-grid {
        grid-template-columns: 1fr;
    }

    .category-header {
        padding: var(--space-4);
    }

    .category-icon {
        width: 48px;
        height: 48px;
        font-size: 1.25rem;
    }

    .category-title {
        font-size: var(--text-base);
    }
}

@media (max-width: 480px) {
    .competition-item {
        padding: var(--space-3);
        gap: var(--space-3);
    }

    .competition-number {
        width: 32px;
        height: 32px;
    }
}

/* ============================================
   VIDEO PLAY BUTTONS & MODAL
   Beautiful video integration for categories
   ============================================ */

/* Category Header Video Button */
.category-video-btn {
    position: relative;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: none;
    background: linear-gradient(135deg, var(--primary) 0%, #7c3aed 100%);
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    margin-left: auto;
    margin-right: var(--space-3);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 2;
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.35),
                0 0 0 0 rgba(37, 99, 235, 0.3);
}

.category-video-btn:hover {
    transform: scale(1.12);
    box-shadow: 0 6px 25px rgba(37, 99, 235, 0.5),
                0 0 20px rgba(124, 58, 237, 0.3);
}

.category-video-btn:active {
    transform: scale(0.95);
}

.video-btn-icon {
    width: 18px;
    height: 18px;
    position: relative;
    z-index: 2;
    margin-left: 2px;
}

/* Pulse ring animation */
.video-btn-pulse {
    position: absolute;
    inset: -4px;
    border-radius: 50%;
    border: 2px solid rgba(37, 99, 235, 0.4);
    animation: videoBtnPulse 2.5s ease-out infinite;
}

@keyframes videoBtnPulse {
    0% {
        transform: scale(1);
        opacity: 0.6;
    }
    70% {
        transform: scale(1.35);
        opacity: 0;
    }
    100% {
        transform: scale(1.35);
        opacity: 0;
    }
}

/* Subcategory Video Button (smaller, inline) */
.btn-video-sm {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.15), rgba(124, 58, 237, 0.15));
    border: 1px solid rgba(37, 99, 235, 0.3);
    border-radius: var(--radius-full);
    color: var(--primary-light);
    font-family: var(--font-display);
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.btn-video-sm svg {
    width: 12px;
    height: 12px;
    flex-shrink: 0;
}

.btn-video-sm:hover {
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.3), rgba(124, 58, 237, 0.3));
    border-color: var(--primary);
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
}

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

/* ============ VIDEO MODAL (Competition) ============ */
.comp-video-modal {
    position: fixed;
    inset: 0;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.4s ease, visibility 0.4s ease;
}

.comp-video-modal.active {
    opacity: 1;
    visibility: visible;
}

.comp-video-modal .video-modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.comp-video-modal .video-modal-container {
    position: relative;
    width: 90%;
    max-width: 900px;
    background: linear-gradient(145deg, #0f172a 0%, #1e1b4b 100%);
    border-radius: 20px;
    border: 1px solid rgba(99, 102, 241, 0.2);
    box-shadow: 0 25px 80px rgba(0, 0, 0, 0.6),
                0 0 60px rgba(37, 99, 235, 0.15),
                inset 0 1px 0 rgba(255, 255, 255, 0.05);
    overflow: hidden;
    transform: scale(0.9) translateY(20px);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.comp-video-modal.active .video-modal-container {
    transform: scale(1) translateY(0);
}

.comp-video-modal .video-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    background: rgba(0, 0, 0, 0.3);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.comp-video-modal .video-modal-title-wrap {
    display: flex;
    align-items: center;
    gap: 10px;
}

.comp-video-modal .video-modal-play-icon {
    width: 20px;
    height: 20px;
    color: var(--primary-light);
}

.comp-video-modal .video-modal-title {
    font-family: var(--font-display);
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.comp-video-modal .video-modal-close {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.comp-video-modal .video-modal-close svg {
    width: 18px;
    height: 18px;
}

.comp-video-modal .video-modal-close:hover {
    background: rgba(239, 68, 68, 0.15);
    border-color: rgba(239, 68, 68, 0.3);
    color: #ef4444;
    transform: rotate(90deg);
}

.comp-video-modal .video-modal-body {
    position: relative;
    width: 100%;
    padding: 0;
    background: #000;
}

.comp-video-modal .video-modal-player {
    display: block;
    width: 100%;
    height: auto;
    aspect-ratio: 16 / 9;
    max-height: 70vh;
    object-fit: contain;
    outline: none;
    background: #000;
}

/* Video player custom accent */
.comp-video-modal .video-modal-player::-webkit-media-controls-panel {
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
}

/* Responsive */
@media (max-width: 768px) {
    .comp-video-modal .video-modal-container {
        width: 95%;
        border-radius: 14px;
    }

    .comp-video-modal .video-modal-header {
        padding: 12px 16px;
    }

    .comp-video-modal .video-modal-title {
        font-size: var(--text-sm);
    }

    .category-video-btn {
        width: 38px;
        height: 38px;
    }

    .video-btn-icon {
        width: 15px;
        height: 15px;
    }
}

@media (max-width: 480px) {
    .comp-video-modal .video-modal-container {
        width: 98%;
        border-radius: 10px;
    }

    .category-video-btn {
        width: 34px;
        height: 34px;
        margin-right: var(--space-2);
    }

    .video-btn-icon {
        width: 13px;
        height: 13px;
    }

    .btn-video-sm {
        padding: 5px 10px;
        font-size: 11px;
        gap: 4px;
    }

    .btn-video-sm svg {
        width: 10px;
        height: 10px;
    }
}