/* ================================
   Timeline Styles
================================ */
.timeline {
    position: relative;
    padding: 40px 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(
        to bottom,
        transparent,
        var(--primary-color) 10%,
        var(--primary-color) 90%,
        transparent
    );
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    margin-bottom: 60px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.timeline-item:nth-child(even) {
    direction: rtl;
}

.timeline-item:nth-child(even) .timeline-content {
    direction: ltr;
}

.timeline-date {
    text-align: right;
    padding-right: 40px;
    position: relative;
}

.timeline-item:nth-child(even) .timeline-date {
    text-align: left;
    padding-right: 0;
    padding-left: 40px;
}

.date-text {
    font-size: 1.1rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.timeline-content {
    background: var(--dark-surface);
    padding: 30px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    position: relative;
    transition: all var(--transition-fast);
}

.timeline-content::before {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    background: var(--primary-color);
    border: 4px solid var(--dark-bg);
    border-radius: 50%;
    top: 50%;
    transform: translateY(-50%);
}

.timeline-item:nth-child(odd) .timeline-content::before {
    right: -50px;
}

.timeline-item:nth-child(even) .timeline-content::before {
    left: -50px;
}

.timeline-content:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 40px rgba(0, 102, 255, 0.2);
}

.timeline-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.timeline-company {
    font-size: 1.1rem;
    color: var(--primary-color);
    margin-bottom: 5px;
}

.timeline-location {
    font-size: 0.9rem;
    color: var(--muted-text);
    margin-bottom: 20px;
}

.timeline-achievements {
    list-style: none;
    margin-bottom: 20px;
}

.timeline-achievements li {
    position: relative;
    padding-left: 25px;
    margin-bottom: 10px;
    color: var(--muted-text);
    line-height: 1.6;
}

.timeline-achievements li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--primary-color);
}

.timeline-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tech-tag {
    padding: 5px 15px;
    background: rgba(0, 102, 255, 0.1);
    border: 1px solid var(--primary-color);
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--primary-color);
    transition: all var(--transition-fast);
}

.tech-tag:hover {
    background: var(--primary-color);
    color: var(--light-text);
    transform: translateY(-2px);
}

/* ================================
   Skills Section
================================ */
.skills {
    background: var(--dark-surface);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
}

.skill-category {
    background: var(--dark-bg);
    padding: 30px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
}

.skill-category:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 40px rgba(0, 102, 255, 0.2);
}

.category-title {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 25px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.skill-items {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.skill-item {
    position: relative;
}

.skill-name {
    display: block;
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--light-text);
}

.skill-bar {
    height: 8px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    overflow: hidden;
    position: relative;
}

.skill-progress {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 4px;
    width: 0;
    transition: width 1.5s cubic-bezier(0.65, 0, 0.35, 1);
    position: relative;
}

.skill-progress::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.4),
        transparent
    );
    animation: shimmer 2s infinite;
}

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

/* ================================
   Projects Section
================================ */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.project-card {
    position: relative;
    background: var(--dark-surface);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
    cursor: pointer;
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(0, 102, 255, 0.3);
}

.project-image {
    position: relative;
    height: 250px;
    background: linear-gradient(135deg, var(--dark-surface), var(--dark-bg));
    overflow: hidden;
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 102, 255, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

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

.project-tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    padding: 20px;
    justify-content: center;
}

.project-tech-stack span {
    padding: 5px 15px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--light-text);
}

.project-number {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 3rem;
    font-weight: 900;
    color: rgba(255, 255, 255, 0.1);
    transition: all var(--transition-fast);
}

.project-card:hover .project-number {
    color: var(--light-text);
    transform: scale(1.2);
}

.project-content {
    padding: 30px;
}

.project-title {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 15px;
}

.project-description {
    color: var(--muted-text);
    line-height: 1.6;
    margin-bottom: 20px;
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--primary-color);
    font-weight: 600;
    text-decoration: none;
    transition: gap var(--transition-fast);
}

.project-link:hover {
    gap: 15px;
}

.arrow-icon {
    transition: transform var(--transition-fast);
}

.project-link:hover .arrow-icon {
    transform: translateX(5px);
}

/* ================================
   Contact Section
================================ */
.contact {
    background: var(--dark-surface);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-subtitle {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.contact-description {
    color: var(--muted-text);
    line-height: 1.8;
    margin-bottom: 30px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 30px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 15px;
}

.contact-icon {
    color: var(--primary-color);
}

.contact-link {
    color: var(--light-text);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.contact-link:hover {
    color: var(--primary-color);
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-link {
    width: 50px;
    height: 50px;
    border: 2px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--light-text);
    transition: all var(--transition-fast);
}

.social-link:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 102, 255, 0.4);
}

/* Form Styles */
.form {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.form-group {
    position: relative;
}

.form-input {
    width: 100%;
    padding: 15px 0;
    background: transparent;
    border: none;
    border-bottom: 2px solid var(--border-color);
    color: var(--light-text);
    font-size: 1rem;
    transition: border-color var(--transition-fast);
}

.form-input:focus {
    outline: none;
    border-bottom-color: var(--primary-color);
}

.form-label {
    position: absolute;
    left: 0;
    top: 15px;
    color: var(--muted-text);
    font-size: 1rem;
    transition: all var(--transition-fast);
    pointer-events: none;
}

.form-input:focus + .form-label,
.form-input:not(:placeholder-shown) + .form-label {
    top: -10px;
    font-size: 0.85rem;
    color: var(--primary-color);
}

.form-input:required {
    box-shadow: none;
}

textarea.form-input {
    resize: vertical;
    min-height: 100px;
}

.btn-submit {
    align-self: flex-start;
    margin-top: 20px;
}

/* ================================
   Footer
================================ */
.footer {
    background: var(--dark-bg);
    padding: 40px 0;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-text {
    color: var(--muted-text);
}

.footer-text p {
    margin-bottom: 5px;
}

.footer-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: color var(--transition-fast);
}

.footer-link:hover {
    color: var(--secondary-color);
}

/* ================================
   Reveal Animations
================================ */
.reveal-fade {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.65, 0, 0.35, 1);
}

.reveal-fade.revealed {
    opacity: 1;
    transform: translateY(0);
}

.reveal-text {
    position: relative;
    overflow: hidden;
}

.reveal-text .title-word {
    display: inline-block;
    transform: translateY(100%);
    transition: transform 0.8s cubic-bezier(0.65, 0, 0.35, 1);
}

.reveal-text.revealed .title-word {
    transform: translateY(0);
    transition-delay: calc(var(--word-index) * 0.1s);
}

.fade-in-up {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: calc(var(--delay) * 0.1s);
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ================================
   Parallax Effects
================================ */
.parallax {
    transform: translateY(0);
    transition: transform 0.5s cubic-bezier(0.23, 1, 0.32, 1);
    will-change: transform;
}

/* ================================
   Utility Classes
================================ */
.no-select {
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

.overflow-hidden {
    overflow: hidden;
}

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

.relative {
    position: relative;
}

.absolute {
    position: absolute;
}