:root {
    --primary-color: #5e72e4;
    --secondary-color: #f7fafc;
    --text-color: #333;
    --text-color-light: #718096;
    --text-color-dark: #1a202c;
    --background-color: #ffffff;
    --background-color-alt: #f8f9fa;
    --success-color: #2dce89;
    --info-color: #11cdef;
    --warning-color: #fb6340;
    --danger-color: #f5365c;
    --border-color: #e2e8f0;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --body-font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    --heading-font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    --mono-font: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
    --transition-speed: 0.3s;
    --card-border-radius: 8px;
    --btn-border-radius: 5px;
    --content-width: 1200px;
}

.dark-theme {
    --primary-color: #5e72e4;
    --secondary-color: #273444;
    --text-color: #e2e8f0;
    --text-color-light: #a0aec0;
    --text-color-dark: #f7fafc;
    --background-color: #1a202c;
    --background-color-alt: #2d3748;
    --border-color: #4a5568;
    --shadow-color: rgba(0, 0, 0, 0.4);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--body-font);
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-color);
    transition: background-color var(--transition-speed), color var(--transition-speed);
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--transition-speed);
}

a:hover {
    color: #4754b3;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--heading-font);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: var(--text-color-dark);
}

/* Container */
.container {
    max-width: var(--content-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: var(--background-color);
    box-shadow: 0 2px 10px var(--shadow-color);
}

.header__logo h1 {
    font-size: 1.8rem;
    margin-bottom: 0;
    color: var(--primary-color);
    margin-left: 1rem;
}

.header__menu {
    flex: 1;
    display: flex;
    justify-content: center;
}

.header__menu ul {
    display: flex;
    gap: 1.5rem;
}

.header__theme-toggle {
    margin-right: 1.5rem;
}

.header__theme-toggle button {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-color);
    font-size: 1.2rem;
    transition: color var(--transition-speed);
}

.header__theme-toggle button:hover {
    color: var(--primary-color);
}

/* Hero Section */
.hero {
    display: flex;
    align-items: center;
    padding: 5rem 0;
    min-height: calc(100vh - 80px);
    position: relative;
}

.hero__content {
    flex: 1;
}

.hero__content h1 {
    font-size: 3.5rem;
    margin-bottom: 0.5rem;
    background: linear-gradient(90deg, var(--primary-color), #38b2ac);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.hero__content h2 {
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-color-light);
}

.hero__motto {
    font-size: 1.2rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
    font-style: italic;
}

.hero__content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    max-width: 600px;
}

.hero__image {
    flex: 1;
    display: flex;
    justify-content: center;
}

.profile-image {
    width: 400px;
    height: 400px;
    overflow: hidden;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 30px var(--shadow-color);
    border: 5px solid var(--background-color-alt);
}

.profile-image img {
    width: 130%;
    height: 130%;
    object-fit: cover;
    object-position: 55% center;
    margin-left: -5%;
}

.profile-placeholder {
    width: 500px;
    height: 500px;
    background-color: var(--background-color-alt);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 30px var(--shadow-color);
}

.profile-placeholder i {
    font-size: 8rem;
    color: var(--primary-color);
}

.hero__cta {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.8rem 1.8rem;
    border-radius: var(--btn-border-radius);
    font-weight: 600;
    transition: all var(--transition-speed);
    cursor: pointer;
    border: none;
    text-align: center;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background-color: #4754b3;
    color: white;
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-color);
    border: 2px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: var(--background-color-alt);
}

.btn-outline {
    background-color: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

.btn-outline:hover {
    background-color: var(--primary-color);
    color: white;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
}

/* Section Basics */
section {
    padding: 5rem 0;
    border-bottom: 1px solid var(--border-color);
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.section-divider {
    height: 4px;
    width: 70px;
    background: var(--primary-color);
    margin: 0 auto;
}

/* About Section */
.about__content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about__content p {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
}

.about__badges {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
    margin-top: 2rem;
}

.badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background-color: var(--background-color-alt);
    border-radius: 50px;
    transition: all var(--transition-speed);
}

.badge:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px var(--shadow-color);
}

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

/* Experience Section */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50px;
    top: 0;
    bottom: 0;
    width: 2px;
    background-color: var(--border-color);
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    padding-left: 70px;
    margin-bottom: 3rem;
}

.timeline-dot {
    position: absolute;
    left: 0;
    top: 5px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background-color: var(--primary-color);
    z-index: 1;
}

.timeline-date {
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.timeline-content {
    background-color: var(--background-color-alt);
    padding: 1.5rem;
    border-radius: var(--card-border-radius);
    box-shadow: 0 5px 15px var(--shadow-color);
}

.timeline-content h3 {
    margin-bottom: 0.5rem;
}

.timeline-content h4 {
    color: var(--text-color-light);
    margin-bottom: 1rem;
    font-weight: 500;
}

.timeline-content ul {
    padding-left: 1.5rem;
}

.timeline-content li {
    margin-bottom: 0.5rem;
    position: relative;
}

.timeline-content li::before {
    content: '▹';
    position: absolute;
    left: -1.5rem;
    color: var(--primary-color);
}

.experience__more {
    text-align: center;
    margin-top: 2rem;
}

/* Skills Section */
.skills__categories {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

.skills-category h3 {
    margin-bottom: 1.5rem;
    color: var(--primary-color);
    font-size: 1.4rem;
}

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

.skill-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem;
    background-color: var(--background-color-alt);
    border-radius: var(--card-border-radius);
    transition: all var(--transition-speed);
}

.skill-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px var(--shadow-color);
}

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

.skill-item span {
    font-size: 0.9rem;
    font-weight: 500;
    text-align: center;
}

/* Projects Section */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

.project-card {
    background-color: var(--background-color-alt);
    border-radius: var(--card-border-radius);
    overflow: hidden;
    box-shadow: 0 5px 15px var(--shadow-color);
    transition: all var(--transition-speed);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px var(--shadow-color);
}

.project-card__image {
    height: 150px;
    background-color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
}

.project-card__image i {
    font-size: 4rem;
    color: white;
}

.project-card__content {
    padding: 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.project-card__content h3 {
    margin-bottom: 0.8rem;
}

.project-card__content p {
    color: var(--text-color-light);
    margin-bottom: 1.5rem;
    flex: 1;
}

.project-card__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.project-card__tags span {
    background-color: var(--background-color);
    color: var(--primary-color);
    padding: 0.3rem 0.8rem;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 500;
}

/* Certifications Section */
.certifications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 2rem;
}

.certification-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background-color: var(--background-color-alt);
    border-radius: var(--card-border-radius);
    box-shadow: 0 5px 15px var(--shadow-color);
    transition: all var(--transition-speed);
}

.certification-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px var(--shadow-color);
}

.certification-card__logo {
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.certification-card__logo i {
    font-size: 1.5rem;
    color: white;
}

.certification-card__content h3 {
    font-size: 1.1rem;
    margin-bottom: 0.3rem;
}

.certification-card__content p {
    font-size: 0.9rem;
    color: var(--text-color-light);
}

/* Education Section */
.education-timeline {
    max-width: 700px;
    margin: 0 auto;
}

.education-item {
    display: flex;
    gap: 2rem;
    margin-bottom: 2rem;
}

.education-item__date {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
    width: 100px;
    flex-shrink: 0;
    text-align: center;
}

.education-item__content {
    flex: 1;
    background-color: var(--background-color-alt);
    padding: 1.5rem;
    border-radius: var(--card-border-radius);
    box-shadow: 0 5px 15px var(--shadow-color);
}

.education-item__content h3 {
    margin-bottom: 0.5rem;
}

.education-item__content h4 {
    color: var(--text-color-light);
    font-weight: 500;
}

/* Contact Section */
.contact__content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

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

.contact__info-item {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.contact__info-item i {
    font-size: 1.5rem;
    color: var(--primary-color);
}

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

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    padding: 0.8rem;
    border: 1px solid var(--border-color);
    border-radius: var(--btn-border-radius);
    background-color: var(--background-color);
    color: var(--text-color);
    font-family: var(--body-font);
    transition: border-color var(--transition-speed);
}

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

/* Footer */
.footer {
    padding: 3rem 0;
    background-color: var(--background-color-alt);
}

.footer__content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
}

.footer__logo h2 {
    font-size: 2rem;
    margin-bottom: 0;
    color: var(--primary-color);
}

.footer__social {
    display: flex;
    gap: 1.5rem;
}

.footer__social a {
    font-size: 1.5rem;
    color: var(--text-color);
    transition: color var(--transition-speed), transform var(--transition-speed);
}

.footer__social a:hover {
    color: var(--primary-color);
    transform: translateY(-5px);
}

.footer__copyright {
    color: var(--text-color-light);
    font-size: 0.9rem;
}

/* Adding download button styles */
.download-resume {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-left: 1rem;
    margin-right: 1rem;
}

/* Leadership Section */
.leadership {
    background-color: transparent;
}

.leadership__content {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.leadership__content::before {
    content: '';
    position: absolute;
    left: 50px;
    top: 0;
    bottom: 0;
    width: 2px;
    background-color: var(--border-color);
    transform: translateX(-50%);
}

.leadership-item {
    position: relative;
    padding-left: 70px;
    margin-bottom: 3rem;
    display: flex;
    align-items: flex-start;
    gap: 2rem;
}

.leadership-item__icon {
    width: 60px;
    height: 60px;
    flex-shrink: 0;
    background-color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: absolute;
    left: 0;
    top: 5px;
}

.leadership-item__icon i {
    font-size: 1.8rem;
    color: white;
}

.leadership-item__content {
    background-color: var(--background-color-alt);
    padding: 1.5rem;
    border-radius: var(--card-border-radius);
    box-shadow: 0 5px 15px var(--shadow-color);
    flex: 1;
}

.leadership-item__content h3 {
    margin-bottom: 1rem;
    color: var(--text-color-dark);
}

.leadership-item__content ul {
    padding-left: 1.5rem;
}

.leadership-item__content li {
    margin-bottom: 0.8rem;
    position: relative;
}

.leadership-item__content li::before {
    content: '▹';
    position: absolute;
    left: -1.5rem;
    color: var(--primary-color);
}

/* Responsive Styles */
@media (max-width: 992px) {
    .hero {
        flex-direction: column;
        text-align: center;
        padding: 3rem 0;
    }

    .hero__content {
        margin-bottom: 3rem;
    }

    .hero__content p {
        margin: 0 auto 2rem;
    }

    .hero__cta {
        justify-content: center;
    }

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

    .education-item {
        flex-direction: column;
        gap: 1rem;
    }

    .education-item__date {
        width: auto;
        text-align: left;
    }

    .profile-image {
        width: 450px;
        height: 450px;
    }
}

@media (max-width: 768px) {
    .header__menu {
        display: none;
    }

    .hero__content h1 {
        font-size: 2.5rem;
    }

    .hero__content h2 {
        font-size: 1.5rem;
    }

    .section-header h2 {
        font-size: 2rem;
    }

    .profile-image {
        width: 400px;
        height: 400px;
    }

    .timeline::before {
        left: 30px;
    }

    .timeline-item {
        padding-left: 50px;
    }

    .timeline-dot {
        width: 15px;
        height: 15px;
    }

    .leadership__content::before {
        left: 30px;
    }

    .leadership-item {
        padding-left: 50px;
    }
    
    .leadership-item__icon {
        width: 50px;
        height: 50px;
    }
    
    .leadership-item__icon i {
        font-size: 1.5rem;
    }
}

@media (max-width: 576px) {
    .profile-image {
        width: 350px;
        height: 350px;
    }

    .profile-placeholder i {
        font-size: 6rem;
    }

    .skill-item i {
        font-size: 1.5rem;
    }
}