* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-orange: #FF5722;
    --dark-bg: #0a0a0a;
    --card-bg: #1a1a1a;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--dark-bg);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Navigation */
nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(10px);
    padding: 1.5rem 5%;
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 87, 34, 0.1);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-primary);
}

.logo span {
    color: var(--primary-orange);
}

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
}

.nav-links a {
    color: var(--text-primary);
    text-decoration: none;
    transition: color 0.3s;
    font-weight: 500;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--primary-orange);
}

.nav-links a.active {
    position: relative;
}

.nav-links a.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary-orange);
}

.nav-menu-toggle {
    display: none;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: var(--text-primary);
    border-radius: 999px;
    padding: 0.25rem 0.65rem;
    font-size: 1.1rem;
    cursor: pointer;
}

.btn-primary {
    background: var(--primary-orange);
    color: white;
    padding: 0.8rem 2rem;
    border: none;
    border-radius: 5px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    text-decoration: none;
    display: inline-block;
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-primary:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary:hover {
    background: #ff6b3d;
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 15px 35px rgba(255, 87, 34, 0.4);
}

.btn-primary:active {
    transform: translateY(-1px) scale(1.02);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    padding: 0.8rem 2rem;
    border: 2px solid var(--text-primary);
    border-radius: 5px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    text-decoration: none;
    display: inline-block;
    position: relative;
    overflow: hidden;
}

.btn-secondary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--text-primary);
    transition: left 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: -1;
}

.btn-secondary:hover::before {
    left: 0;
}

.btn-secondary:hover {
    color: var(--dark-bg);
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 10px 25px rgba(255, 255, 255, 0.2);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 8rem 5% 4rem;
    position: relative;
    overflow: hidden;
}

.hero-container {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    width: 100%;
}

.hero-content {
    z-index: 2;
}

.hero-badge {
    background: var(--primary-orange);
    color: white;
    padding: 0.5rem 1.5rem;
    border-radius: 30px;
    font-size: 0.9rem;
    font-weight: 600;
    display: inline-block;
    margin-bottom: 1.5rem;
    animation: fadeInUp 0.6s ease-out;
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1rem;
    animation: fadeInUp 0.8s ease-out;
    background: linear-gradient(45deg, #FF5722, #FF8A50, #FFB74D, #FF5722);
    background-size: 300% 300%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 0.8s ease-out, gradientShift 3s ease infinite;
}

@keyframes gradientShift {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

.hero-subtitle {
    font-size: 1.3rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    animation: fadeInUp 1s ease-out;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    animation: fadeInUp 1.2s ease-out;
}

/* Hero Image */
.hero-image {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    animation: fadeIn 1.5s ease-out;
}

.geometric-container {
    position: relative;
    width: 100%;
    max-width: 600px;
    aspect-ratio: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-photo {
    position: relative;
    z-index: 2;
    width: 70%;
    height: 70%;
    object-fit: cover;
    border-radius: 10px;
    filter: grayscale(20%);
}

.geometric-shape {
    position: absolute;
    stroke: var(--primary-orange);
    fill: none;
    stroke-width: 2;
    opacity: 0.6;
    animation: float 6s ease-in-out infinite;
}

.shape-1 {
    top: 5%;
    left: 5%;
    width: 35%;
    animation-delay: 0s;
}

.shape-2 {
    bottom: 10%;
    right: 5%;
    width: 40%;
    animation-delay: 1s;
}

.shape-3 {
    top: 50%;
    right: -5%;
    width: 25%;
    animation-delay: 2s;
}

/* Stats */
.stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    padding: 4rem 5%;
    max-width: 1400px;
    margin: 0 auto;
}

.stat-card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    animation: scaleIn 0.6s ease-out backwards;
}

.stat-card:nth-child(1) { animation-delay: 0.1s; }
.stat-card:nth-child(2) { animation-delay: 0.2s; }
.stat-card:nth-child(3) { animation-delay: 0.3s; }
.stat-card:nth-child(4) { animation-delay: 0.4s; }

.stat-card:hover {
    background: var(--primary-orange);
    transform: translateY(-8px) scale(1.05);
    box-shadow: 0 15px 40px rgba(255, 87, 34, 0.4);
}

.stat-number {
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary-orange);
    margin-bottom: 0.5rem;
}

.stat-card:hover .stat-number {
    color: white;
}

.stat-label {
    color: var(--text-secondary);
    font-weight: 500;
}

.stat-card:hover .stat-label {
    color: white;
}

/* Sections */
.section {
    padding: 6rem 5%;
    max-width: 1400px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-label {
    color: var(--primary-orange);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.section-title {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

/* Portfolio */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.portfolio-item {
    background: var(--card-bg);
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    animation: fadeInUp 0.6s ease-out backwards;
}

.portfolio-item:nth-child(1) { animation-delay: 0.1s; }
.portfolio-item:nth-child(2) { animation-delay: 0.2s; }
.portfolio-item:nth-child(3) { animation-delay: 0.3s; }
.portfolio-item:nth-child(4) { animation-delay: 0.4s; }
.portfolio-item:nth-child(5) { animation-delay: 0.5s; }
.portfolio-item:nth-child(6) { animation-delay: 0.6s; }

.portfolio-item:hover {
    transform: translateY(-12px) scale(1.02);
    box-shadow: 0 20px 50px rgba(255, 87, 34, 0.3);
    border-color: var(--primary-orange);
}

.portfolio-image {
    width: 100%;
    height: 250px;
    background: linear-gradient(135deg, #1a1a1a, #2a2a2a);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    overflow: hidden;
}

.portfolio-image img {
    transition: transform 0.4s ease;
}

.portfolio-item:hover .portfolio-image img {
    transform: scale(1.1);
}

.portfolio-content {
    padding: 1.5rem;
}

.portfolio-content h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

.portfolio-content p {
    color: var(--text-secondary);
}

/* About */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-image {
    width: 100%;
    height: 500px;
    background: var(--card-bg);
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.about-text {
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 2rem;
}

.experience-box {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 10px;
    border-left: 4px solid var(--primary-orange);
}

.experience-number {
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary-orange);
}

.experience-label {
    color: var(--text-secondary);
}

/* Skills */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 3rem;
}

.skill-item {
    margin-bottom: 2rem;
}

.skill-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.skill-percentage {
    color: var(--primary-orange);
}

.skill-bar {
    width: 100%;
    height: 8px;
    background: var(--card-bg);
    border-radius: 10px;
    overflow: hidden;
}

.skill-progress {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-orange), #ff8a50);
    border-radius: 10px;
    transition: width 1.5s cubic-bezier(0.4, 0, 0.2, 1);
    animation: progressBar 2s ease-out;
    position: relative;
    overflow: hidden;
}

.skill-progress::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: shimmer 2s infinite;
}

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

/* Contact */
.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-item {
    display: flex;
    gap: 1rem;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: var(--primary-orange);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.contact-item h3 {
    margin-bottom: 0.3rem;
}

.contact-item p {
    color: var(--text-secondary);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-form input,
.contact-form textarea {
    background: var(--card-bg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    padding: 1rem;
    border-radius: 5px;
    font-family: inherit;
    font-size: 1rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.contact-form textarea {
    resize: vertical;
    min-height: 150px;
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--primary-orange);
    box-shadow: 0 0 0 3px rgba(255, 87, 34, 0.1);
    transform: translateY(-2px);
    background: rgba(255, 87, 34, 0.05);
}

.contact-item {
    animation: slideInLeft 0.6s ease-out backwards;
}

.contact-item:nth-child(1) { animation-delay: 0.1s; }
.contact-item:nth-child(2) { animation-delay: 0.2s; }
.contact-item:nth-child(3) { animation-delay: 0.3s; }
.contact-item:nth-child(4) { animation-delay: 0.4s; }

/* Skill logo cards */
.skill-logo-card {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 10px;
    text-align: center;
    border: 1px solid rgba(255, 87, 34, 0.2);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.skill-logo-card:hover {
    transform: translateY(-8px) scale(1.05);
    box-shadow: 0 15px 40px rgba(255, 87, 34, 0.3);
    border-color: var(--primary-orange);
}

.skill-logo-card img,
.skill-logo-card svg {
    transition: transform 0.3s;
}

.skill-logo-card:hover img,
.skill-logo-card:hover svg {
    transform: scale(1.1) rotate(5deg);
}

/* Footer */
footer {
    background: var(--card-bg);
    padding: 2rem 5%;
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--text-secondary);
}

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

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    50% {
        transform: translateY(-20px) rotate(5deg);
    }
}

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

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

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

@keyframes progressBar {
    from {
        width: 0;
    }
}

/* Scroll-triggered animation classes */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.animate-on-scroll.animated {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive */
@media (max-width: 1024px) {
    .hero-container,
    .about-content,
    .contact-container,
    .skills-grid {
        grid-template-columns: 1fr;
    }

    .hero {
        padding: 7rem 3% 3rem;
    }

    .hero-title {
        font-size: 3rem;
    }

    .stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .about-content,
    .contact-container {
        row-gap: 2.5rem;
    }
}

/* Navigation */
nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(10px);
    padding: 1.5rem 5%;
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 87, 34, 0.1);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-primary);
}

.logo span {
    color: var(--primary-orange);
}

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
}

.nav-links a {
    color: var(--text-primary);
    text-decoration: none;
    transition: color 0.3s;
    font-weight: 500;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--primary-orange);
}

.nav-links a.active {
    position: relative;
}

.nav-links a.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary-orange);
}

@media (max-width: 768px) {
    nav {
        padding: 0.75rem 4%;
    }

    .nav-container {
        max-width: 1400px;
        margin: 0 auto;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 0.5rem 1rem;
    }

    .nav-links {
        position: absolute;
        top: 100%;
        right: 4%;
        background: var(--card-bg);
        border: 1px solid rgba(255, 255, 255, 0.08);
        border-radius: 8px;
        padding: 0.5rem 0.75rem;
        display: none;
        flex-direction: column;
        gap: 0.4rem;
        font-size: 0.9rem;
        min-width: 180px;
    }

    .nav-links.open {
        display: flex;
    }

    .nav-links li {
        list-style: none;
    }

    .nav-menu-toggle {
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }

    .btn-primary {
        padding: 0.6rem 1.3rem;
        font-size: 0.9rem;
    }

    .hero {
        padding: 6.5rem 4% 3rem;
    }

    .hero-container {
        text-align: center;
        gap: 2.5rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: stretch;
    }

    .hero-image {
        margin-top: 1rem;
    }

    .section {
        padding: 3.5rem 4%;
    }

    .section-title {
        font-size: 2rem;
    }

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

    .skills-grid {
        gap: 2rem;
    }

    /* Certifications: on small screens always use compact card, hide enlarged */
    #certifications {
        display: block !important;
    }

    #certifications-enlarged {
        display: none !important;
    }
}