/* ===================================================================
   ENHANCED INTERACTIVE CSS ADDITIONS
   Modern, Professional, Recruiter-Friendly Animations
   =================================================================== */

/* Scroll Progress Bar */
.scroll-progress {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    height: 4px;
    z-index: var(--z-fixed);
    background: transparent;
}

.scroll-progress-bar {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary), var(--color-accent));
    transition: width 0.1s linear;
    box-shadow: 0 2px 8px rgba(32, 152, 108, 0.5);
}

/* Enhanced Particle Canvas */
.particles-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    opacity: 0.4;
}

[data-theme="light"] .particles-canvas {
    opacity: 0.2;
}

/* Gradient Text Animation */
@keyframes gradientShift {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position:100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

.gradient-text {
    background: linear-gradient(270deg, var(--color-primary), var(--color-secondary), var(--color-accent));
    background-size: 200% 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientShift 5s ease infinite;
}

/* Interactive Project Cards with 3D Flip */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--space-2xl);
    perspective: 1000px;
}

.project-card {
    position: relative;
    background: var(--color-surface-light);
    border-radius: var(--border-radius-xl);
    padding: var(--space-xl);
    border: 2px solid transparent;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    height: 100%;
    min-height: 400px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(32, 152, 108, 0.05), rgba(0, 123, 255, 0.05));
    opacity: 0;
    transition: opacity var(--transition-base);
}

.project-card:hover {
    transform: translateY(-12px) scale(1.02);
    border-color: var(--color-primary);
    box-shadow: 0 20px 60px rgba(32, 152, 108, 0.25),
                0 0 40px rgba(32, 152, 108, 0.1);
}

.project-card:hover::before {
    opacity: 1;
}

.project-card.featured {
    border-color: var(--color-accent);
    background: linear-gradient(135deg, var(--color-surface-light), rgba(255, 122, 33, 0.03));
}

/* Enhanced Skill Cards with Modern Design */
.skills-modern-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-2xl);
}

.skill-progress-section {
    background: var(--color-surface-light);
    padding: var(--space-2xl);
    border-radius: var(--border-radius-xl);
    border: 2px solid var(--color-border);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.skill-progress-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
   height: 4px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
}

.skill-progress-section:hover {
    transform: translateY(-8px);
    border-color: var(--color-primary);
    box-shadow: 0 15px 40px rgba(32, 152, 108, 0.2);
}

.skill-section-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--space-xl);
    color: var(--color-text);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.skills-progress-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.skill-progress-item {
    position: relative;
}

.skill-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--space-sm);
}

.skill-name {
    font-weight: 600;
    color: var(--color-text);
    font-size: var(--font-size-base);
}

.skill-percentage {
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.skill-bar {
    height: 12px;
    background: var(--color-surface-dark);
    border-radius: var(--border-radius-full);
    overflow: hidden;
    position: relative;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

.skill-bar-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    border-radius: var(--border-radius-full);
    transition: width 1.5s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.skill-bar-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% {
        transform: translateX(-100%);
    }
    100% {
        transform: translateX(100%);
    }
}

/* Enhanced Achievement Cards */
.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-xl);
}

.achievement-card {
    background: var(--card-bg-light);
    padding: var(--space-2xl);
    border-radius: var(--card-radius, 16px);
    text-align: center;
    border: 2px solid var(--card-border);
    transition: var(--transition-smooth, all 0.3s ease);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-base, 0 4px 15px rgba(0, 0, 0, 0.05));
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

[data-theme="dark"] .achievement-card {
    background: var(--card-bg-dark);
}

.achievement-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary), var(--color-accent));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.achievement-card:hover {
    transform: translateY(-8px);
    border-color: var(--card-border-hover, var(--color-primary));
    box-shadow: var(--shadow-hover, 0 20px 50px rgba(0, 0, 0, 0.15));
}

.achievement-card:hover::before {
    opacity: 1;
}

.achievement-icon {
    font-size: var(--font-size-5xl, 3rem);
    margin-bottom: var(--space-md);
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.1));
    transition: transform 0.3s ease;
}

.achievement-card:hover .achievement-icon {
    transform: scale(1.1) rotate(5deg);
}

.achievement-number {
    font-size: var(--font-size-5xl, 3rem);
    font-weight: 800;
    color: var(--color-text);
    margin-bottom: var(--space-xs);
    line-height: 1;
}

.achievement-label {
    font-size: var(--font-size-base);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
    text-transform: uppercase;
    letter-spacing: 0.05rem;
}

.achievement-description {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

/* Enhanced Skill Tags */
.additional-skills {
    margin-top: var(--space-3xl);
}

.skills-tags-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--space-xl);
    color: var(--color-text);
}

.skills-tags-container {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    justify-content: center;
}

.skill-tag-modern {
    background: linear-gradient(135deg, var(--color-surface-light), var(--color-surface));
    color: var(--color-text);
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--border-radius-full);
    font-size: var(--font-size-base);
    font-weight: 600;
    border: 2px solid var(--color-border);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.skill-tag-modern::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: radial-gradient(circle, rgba(32, 152, 108, 0.2), transparent);
    transform: translate(-50%, -50%);
    transition: width 0.5s, height 0.5s;
    border-radius: 50%;
}

.skill-tag-modern:hover {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: white;
    transform: translateY(-5px) scale(1.1);
    border-color: var(--color-primary);
    box-shadow: 0 8px 20px rgba(32, 152, 108, 0.3);
}

.skill-tag-modern:hover::before {
    width: 300px;
    height: 300px;
}

/* Typing Effect Enhancements */
.typing-text {
    display: inline-block;
    min-width: 300px;
    text-align: left;
}

.typing-cursor {
    display: inline-block;
    margin-left: 4px;
    animation: blink 1s step-end infinite;
    color: var(--color-primary);
    font-weight: 700;
}

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

/* Enhanced Back to Top Button */
#back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: white;
    border: none;
    border-radius: 50%;
    font-size: var(--font-size-2xl);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: scale(0.5);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 990;
    box-shadow: 0 8px 20px rgba(32, 152, 108, 0.4);
}

#back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: scale(1);
}

#back-to-top:hover {
    transform: scale(1.1) translateY(-5px);
    box-shadow: 0 12px 30px rgba(32, 152, 108, 0.5);
}

/* Loading Animation Enhancement */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

[data-aos] {
    opacity: 0;
    transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-aos].aos-animate,
[data-aos].visible {
    opacity: 1;
}

[data-aos="fade-up"] {
    transform: translateY(30px);
}

[data-aos="fade-up"].aos-animate,
[data-aos="fade-up"].visible {
    transform: translateY(0);
}

[data-aos="fade-left"] {
    transform: translateX(-30px);
}

[data-aos="fade-left"].aos-animate,
[data-aos="fade-left"].visible {
    transform: translateX(0);
}

[data-aos="fade-right"] {
    transform: translateX(30px);
}

[data-aos="fade-right"].aos-animate,
[data-aos="fade-right"].visible {
    transform: translateX(0);
}

[data-aos="zoom-in"] {
    transform: scale(0.9);
}

[data-aos="zoom-in"].aos-animate,
[data-aos="zoom-in"].visible {
    transform: scale(1);
}

[data-aos="flip-left"] {
    transform: perspective(1000px) rotateY(-20deg);
}

[data-aos="flip-left"].aos-animate,
[data-aos="flip-left"].visible {
    transform: perspective(1000px) rotateY(0);
}

[data-aos="slide-right"] {
    transform: translateX(-50px);
}

[data-aos="slide-right"].aos-animate,
[data-aos="slide-right"].visible {
    transform: translateX(0);
}

[data-aos="slide-left"] {
    transform: translateX(50px);
}

[data-aos="slide-left"].aos-animate,
[data-aos="slide-left"].visible {
    transform: translateX(0);
}

/* Cursor Trail Effect (Subtle) */
.cursor-trail {
    position: fixed;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(32, 152, 108, 0.3), transparent);
    pointer-events: none;
    z-index: 9999;
    transition: transform 0.1s ease;
}

/* Card Hover Shadow Effect */
.card-3d-effect {
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.card-3d-effect:hover {
    transform: translateY(-10px) perspective(1000px) rotateX(5deg);
}

/* Glowing Border Animation */
@keyframes borderGlow {
    0%, 100% {
        border-color: var(--color-primary);
        box-shadow: 0 0 20px rgba(32, 152, 108, 0.3);
    }
    50% {
        border-color: var(--color-secondary);
        box-shadow: 0 0 30px rgba(0, 123, 255, 0.4);
    }
}

.glow-border {
    animation: borderGlow 3s ease-in-out infinite;
}

/* Interactive Timeline Enhancement */
.experience-item,
.education-item {
    position: relative;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.experience-item.visible,
.education-item.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Smooth Section Transitions */
section {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease forwards;
}

section:nth-child(1) { animation-delay: 0.1s; }
section:nth-child(2) { animation-delay: 0.2s; }
section:nth-child(3) { animation-delay: 0.3s; }

/* Button Ripple Effect */
.btn-ripple {
    position: relative;
    overflow: hidden;
}

.btn-ripple::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-ripple:active::after {
    width: 300px;
    height: 300px;
}

/* Enhanced Mobile Responsiveness */
@media (max-width: 768px) {
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .skills-modern-grid {
        grid-template-columns: 1fr;
    }
    
    .achievements-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }
    
    .about-text {
        padding-left: 0;
    }
    
    .scroll-progress {
        top: 60px;
    }
}

@media (max-width: 480px) {
    .achievements-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-md);
        padding: var(--space-lg);
    }
    
    .typing-text {
        min-width: 200px;
        font-size: var(--font-size-lg);
    }
}

/* Performance Optimizations */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .particles-canvas {
        display: none;
    }
}

/* GPU Acceleration for Smooth Animations */
.project-card,
.skill-progress-section,
.achievement-card,
.btn {
    will-change: transform;
    transform: translateZ(0);
    backface-visibility: hidden;
}