/* ====================================================================
   ABOUT DETAIL PAGE STYLES
   ==================================================================== */

/* Back to Home Button */
.back-to-home {
    position: relative;
    width: 90px;
    top: 8rem;
    left: 2rem;
    z-index: 999;
}

.back-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 45px;
    height: 45px;
    padding: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(0, 238, 255, 0.3);
    border-radius: 50%;
    color: var(--text-color);
    text-decoration: none;
    font-size: 1.4rem;
    font-weight: 500;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.back-btn:hover {
    background: rgba(0, 238, 255, 0.1);
    border-color: var(--main-color);
    transform: translateX(-5px);
    box-shadow: 0 6px 20px rgba(0, 238, 255, 0.3);
}

.back-btn i {
    font-size: 1.6rem;
    transition: transform 0.3s ease;
}

.back-btn:hover i {
    transform: scale(1.1);
}

/* About Detail Section */
.about-detail {
    background: var(--bg-color);
    min-height: 100vh;
    padding: 12rem 9% 5rem;
    position: relative;
}

.about-detail::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 238, 255, 0.03), transparent);
    pointer-events: none;
}

.about-detail-container {
    max-width: 1400px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

/* Hero Section */
.about-hero {
    margin-bottom: 8rem;
    text-align: center;
}

.about-hero-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6rem;
    flex-wrap: wrap;
}

.profile-image-container {
    flex-shrink: 0;
}

.profile-image-wrapper {
    position: relative;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    overflow: hidden;
    border: 4px solid var(--main-color);
    box-shadow: 0 0 30px rgba(0, 238, 255, 0.3);
    transition: all 0.3s ease;
}

.profile-image-wrapper:hover {
    transform: scale(1.05);
    box-shadow: 0 0 40px rgba(0, 238, 255, 0.5);
}

.profile-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.profile-image-wrapper:hover .profile-image {
    transform: scale(1.1);
}

.profile-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    padding: 2rem;
    transform: translateY(100%);
    transition: transform 0.3s ease;
}

.profile-image-wrapper:hover .profile-overlay {
    transform: translateY(0);
}

.profile-status {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    color: var(--main-color);
    font-size: 1.2rem;
    font-weight: 500;
}

.profile-status i {
    font-size: 1.4rem;
}

.hero-text {
    flex: 1;
    text-align: left;
    min-width: 400px;
}

.hero-title {
    font-size: 4.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

.name-highlight {
    color: var(--main-color);
    display: block;
}

.hero-subtitle {
    font-size: 2.4rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 2rem;
}

.hero-description {
    font-size: 1.8rem;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 3rem;
}

.hero-stats {
    display: flex;
    gap: 4rem;
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 3rem;
    font-weight: 700;
    color: var(--main-color);
    line-height: 1;
}

.stat-label {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.6);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Content Grid */
.about-content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 3rem;
    margin-bottom: 6rem;
}

/* Content Cards */
.content-card {
    background: linear-gradient(135deg, var(--second-bg-color), rgba(0, 238, 255, 0.05));
    border: 1px solid rgba(0, 238, 255, 0.1);
    border-radius: 2rem;
    padding: 3rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.content-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 238, 255, 0.1), transparent);
    transition: left 0.5s ease;
}

.content-card:hover::before {
    left: 100%;
}

.content-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 238, 255, 0.2);
    border-color: var(--main-color);
}

.card-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid rgba(0, 238, 255, 0.2);
}

.card-header i {
    font-size: 2.4rem;
    color: var(--main-color);
}

.card-header h3 {
    font-size: 2rem;
    font-weight: 600;
    color: var(--text-color);
}

.card-content {
    position: relative;
    z-index: 1;
}

.card-content p {
    font-size: 1.5rem;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 1.5rem;
}

/* Timeline Styles */
.education-timeline,
.experience-timeline {
    position: relative;
    padding-left: 2rem;
}

.education-timeline::before,
.experience-timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--main-color), transparent);
}

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
    padding-left: 2rem;
}

.timeline-marker {
    position: absolute;
    left: -2rem;
    top: 0.5rem;
    width: 12px;
    height: 12px;
    background: var(--main-color);
    border-radius: 50%;
    border: 3px solid var(--second-bg-color);
    box-shadow: 0 0 10px rgba(0, 238, 255, 0.5);
}

.timeline-content h4 {
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 0.5rem;
}

.timeline-content .institution,
.timeline-content .company {
    font-size: 1.4rem;
    color: var(--main-color);
    font-weight: 500;
    margin-bottom: 0.3rem;
}

.timeline-content .period {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 1rem;
}

.timeline-content .description {
    font-size: 1.4rem;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 1rem;
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
}

.tech-tag {
    padding: 0.4rem 1rem;
    background: rgba(0, 238, 255, 0.1);
    color: var(--main-color);
    border: 1px solid rgba(0, 238, 255, 0.3);
    border-radius: 1rem;
    font-size: 1.1rem;
    font-weight: 500;
}

/* Values Grid */
.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

.value-item {
    text-align: center;
    padding: 2rem;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 1rem;
    border: 1px solid rgba(0, 238, 255, 0.1);
    transition: all 0.3s ease;
}

.value-item:hover {
    background: rgba(0, 238, 255, 0.1);
    border-color: var(--main-color);
    transform: translateY(-3px);
}

.value-item i {
    font-size: 3rem;
    color: var(--main-color);
    margin-bottom: 1rem;
    display: block;
}

.value-item h4 {
    font-size: 1.6rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 1rem;
}

.value-item p {
    font-size: 1.3rem;
    line-height: 1.5;
    color: rgba(255, 255, 255, 0.7);
    margin: 0;
}

/* Interests Grid */
.interests-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1.5rem;
}

.interest-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 1rem;
    border: 1px solid rgba(0, 238, 255, 0.1);
    transition: all 0.3s ease;
    cursor: pointer;
}

.interest-item:hover {
    background: rgba(0, 238, 255, 0.1);
    border-color: var(--main-color);
    transform: scale(1.05);
}

.interest-item i {
    font-size: 2rem;
    color: var(--main-color);
}

.interest-item span {
    font-size: 1.4rem;
    font-weight: 500;
    color: var(--text-color);
}

/* Contact Methods */
.contact-methods {
    margin-bottom: 3rem;
}

.contact-method {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 1.5rem;
    margin-bottom: 1rem;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 1rem;
    border: 1px solid rgba(0, 238, 255, 0.1);
    transition: all 0.3s ease;
}

.contact-method:hover {
    background: rgba(0, 238, 255, 0.1);
    border-color: var(--main-color);
}

.contact-method i {
    font-size: 2rem;
    color: var(--main-color);
    width: 2.5rem;
    text-align: center;
}

.contact-details {
    flex: 1;
}

.contact-label {
    display: block;
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 0.3rem;
}

.contact-value {
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--text-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

.contact-value:hover {
    color: var(--main-color);
}

/* Social Links */
.social-links h4 {
    font-size: 1.6rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 1.5rem;
}

.social-buttons {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1rem;
}

.social-btn {
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 0.8rem !important;
    padding: 1rem;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(0, 238, 255, 0.2);
    border-radius: 1rem;
    color: var(--text-color);
    text-decoration: none;
    font-size: 1.3rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.social-btn:hover {
    background: rgba(0, 238, 255, 0.1);
    border-color: var(--main-color);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 238, 255, 0.2);
}

.social-btn i {
    font-size: 1.8rem !important;
    font-style: normal !important;
    line-height: 1 !important;
    display: inline-block !important;
}

.social-icon {
    font-size: 1.8rem;
    line-height: 1;
    display: inline-block;
    width: 1.8rem;
    text-align: center;
}

.social-btn.github:hover {
    background: rgba(51, 51, 51, 0.2);
    border-color: #333;
}

.social-btn.linkedin:hover {
    background: rgba(0, 119, 181, 0.2);
    border-color: #0077b5;
}

.social-btn.twitter:hover {
    background: rgba(29, 161, 242, 0.2);
    border-color: #1da1f2;
}

.social-btn.instagram:hover {
    background: rgba(0, 119, 181, 0.2);
    border-color: #0077b5;
}

/* Call to Action Section */
.cta-section {
    background: linear-gradient(135deg, var(--second-bg-color), rgba(0, 238, 255, 0.1));
    border: 1px solid rgba(0, 238, 255, 0.2);
    border-radius: 2rem;
    padding: 5rem 3rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 238, 255, 0.1), transparent);
    animation: shimmer 3s infinite;
}

@keyframes shimmer {
    0% { left: -100%; }
    100% { left: 100%; }
}

.cta-content {
    position: relative;
    z-index: 1;
}

.cta-content h2 {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 1.5rem;
}

.cta-content p {
    font-size: 1.8rem;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    padding: 1.5rem 3rem;
    border-radius: 2rem;
    font-size: 1.6rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.btn-primary {
    background: linear-gradient(135deg, var(--main-color), #00d4ff);
    color: var(--bg-color);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 238, 255, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--text-color);
    border-color: var(--main-color);
}

.btn-secondary:hover {
    background: rgba(0, 238, 255, 0.1);
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 238, 255, 0.2);
}

.btn i {
    font-size: 1.8rem;
}

/* Responsive Design */
@media (max-width: 1200px) {
    .about-detail {
        padding: 12rem 5% 5rem;
    }
    
    .about-content-grid {
        grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    }
    
    .hero-text {
        min-width: 350px;
    }
}

@media (max-width: 768px) {
    .back-to-home {
        top: 7rem;
        left: 1rem;
    }
    
    .back-btn {
        padding: 0.8rem 1.2rem;
        font-size: 1.2rem;
    }
    
    .about-detail {
        padding: 10rem 3% 3rem;
    }
    
    .about-hero-content {
        flex-direction: column;
        gap: 3rem;
        text-align: center;
    }
    
    .hero-text {
        min-width: auto;
        text-align: center;
    }
    
    .profile-image-wrapper {
        width: 250px;
        height: 250px;
    }
    
    .hero-title {
        font-size: 3.5rem;
    }
    
    .hero-subtitle {
        font-size: 2rem;
    }
    
    .hero-description {
        font-size: 1.6rem;
    }
    
    .hero-stats {
        justify-content: center;
        gap: 2rem;
    }
    
    .about-content-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .content-card {
        padding: 2rem;
    }
    
    .values-grid {
        grid-template-columns: 1fr;
    }
    
    .interests-grid {
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    }
    
    .social-buttons {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .cta-content h2 {
        font-size: 2.8rem;
    }
    
    .cta-content p {
        font-size: 1.6rem;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .about-detail {
        padding: 9rem 2% 2rem;
    }
    
    .profile-image-wrapper {
        width: 200px;
        height: 200px;
    }
    
    .hero-title {
        font-size: 2.8rem;
    }
    
    .hero-subtitle {
        font-size: 1.8rem;
    }
    
    .hero-stats {
        gap: 1.5rem;
    }
    
    .stat-number {
        font-size: 2.5rem;
    }
    
    .content-card {
        padding: 1.5rem;
    }
    
    .card-header h3 {
        font-size: 1.8rem;
    }
    
    .interests-grid {
        grid-template-columns: 1fr;
    }
    
    .interest-item {
        justify-content: center;
    }
    
    .cta-section {
        padding: 3rem 2rem;
    }
    
    .cta-content h2 {
        font-size: 2.4rem;
    }
}

/* ====================================================================
   SKILLS & TOOLS HORIZONTAL SECTION - STANDARDIZED LAYOUT
   ==================================================================== */

/* Main Skills & Tools Section */
.skills-tools-section {
    background: linear-gradient(135deg, var(--second-bg-color), rgba(0, 238, 255, 0.05));
    border: 1px solid rgba(0, 238, 255, 0.1);
    border-radius: 2rem;
    padding: 4rem 3rem;
    margin-bottom: 6rem;
    position: relative;
    overflow: hidden;
}

.skills-tools-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 238, 255, 0.1), transparent);
    animation: shimmer 3s infinite;
}

@keyframes shimmer {
    0% { left: -100%; }
    100% { left: 100%; }
}

/* Section Header */
.skills-tools-header {
    text-align: center;
    margin-bottom: 4rem;
    position: relative;
    z-index: 1;
}

.section-main-title {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 1rem;
}

.section-main-title i {
    font-size: 3rem;
    color: var(--main-color);
}

.section-description {
    font-size: 1.6rem;
    color: rgba(255, 255, 255, 0.8);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

/* Horizontal Container */
.skills-tools-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    position: relative;
    z-index: 1;
}

/* Column Headers */
.column-header {
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid rgba(0, 238, 255, 0.2);
}

.column-title {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 2.2rem;
    font-weight: 600;
    color: var(--text-color);
    margin: 0;
}

.column-title i {
    font-size: 2.4rem;
    color: var(--main-color);
}

/* Skills Grid - Following Main Portfolio Standards */
.skills-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

.skill-box {
    background: linear-gradient(135deg, var(--bg-color), rgba(0, 238, 255, 0.1));
    padding: 2rem;
    border-radius: 1.5rem;
    border: 1px solid rgba(0, 238, 255, 0.1);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.skill-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 238, 255, 0.1), transparent);
    transition: left 0.5s ease;
}

.skill-box:hover::before {
    left: 100%;
}

.skill-box:hover {
    border-color: var(--main-color);
    transform: translateY(-0.5rem);
    box-shadow: 0 1rem 2rem rgba(0, 238, 255, 0.3);
}

.skill-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
    transition: all 0.3s ease;
}

.skill-box:hover .skill-icon {
    transform: scale(1.1);
}

.skill-box h4 {
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 1rem;
}

.skill-level {
    margin-bottom: 1rem;
}

.level-text {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 0.8rem;
    display: block;
}

.progress-bar {
    width: 100%;
    height: 6px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 3px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    border-radius: 3px;
    transition: width 1.5s ease;
    position: relative;
}

.progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: progress-shimmer 2s infinite;
}

@keyframes progress-shimmer {
    0% { left: -100%; }
    100% { left: 100%; }
}

.skill-description {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.4;
    margin-top: 0.5rem;
}

/* Tools Grid - Following Main Portfolio Standards */
.tools-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

.tool-box {
    background: linear-gradient(135deg, var(--second-bg-color), rgba(0, 238, 255, 0.1));
    padding: 2rem;
    border-radius: 1.5rem;
    border: 1px solid rgba(0, 238, 255, 0.1);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.tool-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 238, 255, 0.1), transparent);
    transition: left 0.5s ease;
}

.tool-box:hover::before {
    left: 100%;
}

.tool-box:hover {
    border-color: var(--main-color);
    transform: translateY(-0.5rem);
    box-shadow: 0 1rem 2rem rgba(0, 238, 255, 0.25);
}

.tool-icon {
    font-size: 2.8rem;
    margin-bottom: 1rem;
    display: block;
    position: relative;
    transition: all 0.3s ease;
}

.tool-box:hover .tool-icon {
    transform: scale(1.1);
}

.favorite-star {
    position: absolute;
    top: -0.3rem;
    right: -0.3rem;
    font-size: 1.2rem;
    color: #ffd700;
}

.tool-box h4 {
    font-size: 1.6rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 1rem;
}

.tool-meta {
    margin-bottom: 1rem;
}

.tool-category {
    display: inline-block;
    padding: 0.3rem 0.8rem;
    border-radius: 0.8rem;
    font-size: 1rem;
    font-weight: 500;
    color: var(--bg-color);
    margin-right: 0.5rem;
    margin-bottom: 0.3rem;
}

.tool-type {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.6);
}

.tool-description {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.4;
    margin-bottom: 1rem;
}

.tool-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.6rem 1.2rem;
    background: rgba(0, 238, 255, 0.1);
    border: 1px solid rgba(0, 238, 255, 0.3);
    border-radius: 1rem;
    color: var(--main-color);
    text-decoration: none;
    font-size: 1.1rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.tool-link:hover {
    background: rgba(0, 238, 255, 0.2);
    border-color: var(--main-color);
    transform: translateY(-2px);
}

/* Loading Placeholder */
.loading-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem;
    text-align: center;
}

.loading-spinner {
    width: 30px;
    height: 30px;
    border: 3px solid rgba(0, 238, 255, 0.3);
    border-top: 3px solid var(--main-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 1rem;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading-placeholder p {
    color: var(--main-color);
    font-size: 1.4rem;
    font-weight: 500;
    margin: 0;
}

/* Responsive Design for Skills & Tools */
@media (max-width: 1200px) {
    .skills-tools-container {
        gap: 3rem;
    }
    
    .section-main-title {
        font-size: 3rem;
    }
}

@media (max-width: 768px) {
    .skills-tools-section {
        padding: 3rem 2rem;
        margin-bottom: 4rem;
    }
    
    .skills-tools-container {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .skills-tools-header {
        margin-bottom: 3rem;
    }
    
    .section-main-title {
        font-size: 2.5rem;
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .section-description {
        font-size: 1.4rem;
    }
    
    .column-title {
        font-size: 1.8rem;
    }
}

@media (max-width: 480px) {
    .skills-tools-section {
        padding: 2rem 1.5rem;
    }
    
    .section-main-title {
        font-size: 2.2rem;
    }
    
    .column-title {
        font-size: 1.6rem;
    }
    
    .skill-box,
    .tool-box {
        padding: 1.5rem;
    }
    
    .skill-icon {
        font-size: 2.5rem;
    }
    
    .tool-icon {
        font-size: 2.3rem;
    }
}

/* Back to Home Button - Complete Styling */
.back-to-home {
    position: fixed;
    top: 2rem;
    left: 2rem;
    z-index: 1000;
    animation: slideInLeft 0.8s ease-out;
}

.back-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50px;
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.back-btn:hover {
    background: rgba(0, 238, 255, 0.1);
    color: var(--bg-color);
    transform: translateX(-5px);
    box-shadow: 0 6px 20px rgba(0, 238, 255, 0.3);
}

.back-btn i {
    font-size: 1.2rem;
    transition: transform 0.3s ease;
}

.back-btn:hover i {
    transform: translateX(-3px);
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}