/* Main Styles for Keerthika's Portfolio */

/* Base Styles */
:root {
    --primary-color: #1a237e;
    --secondary-color: #7b1fa2;
    --accent-color: #00bcd4;
    --text-color: #333;
    --light-text: #f5f5f5;
    --background-color: #f9f9f9;
    --card-bg: #ffffff;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-color);
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

section {
    padding: 80px 0;
}

h1, h2, h3, h4, h5, h6 {
    margin-bottom: 15px;
    line-height: 1.2;
}

p {
    margin-bottom: 15px;
}

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

a:hover {
    color: var(--secondary-color);
}

ul {
    list-style: none;
}

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

.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 30px;
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    border: none;
}

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

.btn-primary:hover {
    background-color: var(--secondary-color);
    color: var(--light-text);
    transform: translateY(-3px);
}

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

.btn-secondary:hover {
    background-color: var(--primary-color);
    color: var(--light-text);
    transform: translateY(-3px);
}

.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-header h2 {
    font-size: 2.5rem;
    color: var(--primary-color);
    position: relative;
    display: inline-block;
}

.underline {
    height: 4px;
    width: 70px;
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    margin: 0 auto;
    margin-top: 10px;
    border-radius: 2px;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: var(--shadow);
    z-index: 1000;
    padding: 15px 0;
    transition: var(--transition);
}

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

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

.nav-menu {
    display: flex;
}

.nav-menu li {
    margin-left: 25px;
}

.nav-menu a {
    color: var(--text-color);
    font-weight: 500;
    position: relative;
}

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

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    transition: var(--transition);
}

.nav-menu a:hover::after, .nav-menu a.active::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    cursor: pointer;
}

.nav-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--primary-color);
    margin: 5px 0;
    transition: var(--transition);
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, rgba(26, 35, 126, 0.05) 0%, rgba(123, 31, 162, 0.05) 100%);
    padding-top: 80px;
}

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

.hero-content {
    flex: 1;
}

.hero-content h1 {
    font-size: 3.5rem;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.hero-content h2 {
    font-size: 2rem;
    color: var(--secondary-color);
    margin-bottom: 20px;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 30px;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    margin-bottom: 30px;
}

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

.social-icons a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--primary-color);
    color: var(--light-text);
    transition: var(--transition);
}

.social-icons a:hover {
    background-color: var(--secondary-color);
    transform: translateY(-3px);
}

.hero-visual {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.data-visualization {
    width: 100%;
    max-width: 500px;
}

.data-svg {
    width: 100%;
    height: auto;
}

.pulse-circle {
    fill: rgba(123, 31, 162, 0.1);
    stroke: var(--secondary-color);
    stroke-width: 2;
    animation: pulse 3s infinite;
}

.data-path, .data-path-2 {
    fill: none;
    stroke: var(--primary-color);
    stroke-width: 3;
    stroke-dasharray: 500;
    stroke-dashoffset: 500;
    animation: dash 5s linear forwards infinite;
}

.data-path-2 {
    stroke: var(--secondary-color);
    animation-delay: 1s;
}

.data-point {
    fill: var(--accent-color);
    animation: fadeInOut 3s infinite alternate;
}

@keyframes pulse {
    0% {
        transform: scale(1);
        opacity: 0.6;
    }
    50% {
        transform: scale(1.05);
        opacity: 0.3;
    }
    100% {
        transform: scale(1);
        opacity: 0.6;
    }
}

@keyframes dash {
    to {
        stroke-dashoffset: 0;
    }
}

@keyframes fadeInOut {
    from {
        opacity: 0.3;
    }
    to {
        opacity: 1;
    }
}

/* About Section */
.about-content {
    display: flex;
    align-items: center;
    gap: 50px;
}

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

.profile-placeholder {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background-color: #e0e0e0;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: var(--shadow);
}

.profile-placeholder i {
    font-size: 150px;
    color: #bdbdbd;
}

.profile-image {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.profile-pic {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.about-text {
    flex: 1;
}

.about-details {
    margin-top: 30px;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
}

.detail {
    display: flex;
    align-items: center;
    gap: 10px;
}

.detail i {
    color: var(--primary-color);
    font-size: 1.2rem;
}

/* Skills Section */
.skills-content {
    display: flex;
    flex-direction: column;
    gap: 50px;
}

.skills-category h3 {
    margin-bottom: 25px;
    color: var(--primary-color);
}

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

.skill {
    width: 100%;
}

.skill-name {
    margin-bottom: 8px;
    font-weight: 500;
}

.skill-bar {
    height: 10px;
    background-color: #e0e0e0;
    border-radius: 5px;
    overflow: hidden;
}

.skill-level {
    height: 100%;
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    border-radius: 5px;
    position: relative;
    animation: skillFill 2s ease-out forwards;
}

.skill-level::after {
    content: attr(data-level);
    position: absolute;
    right: 0;
    top: -25px;
    font-size: 0.8rem;
    color: var(--primary-color);
}

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

.skill-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.skill-card {
    background-color: var(--card-bg);
    padding: 20px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: var(--transition);
}

.skill-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.skill-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 auto 15px;
}

.skill-icon i {
    font-size: 1.5rem;
    color: var(--light-text);
}

.skill-card h4 {
    font-size: 1rem;
    margin-bottom: 0;
}

/* Education Section */
.education-card {
    background-color: var(--card-bg);
    border-radius: 10px;
    box-shadow: var(--shadow);
    padding: 30px;
    display: flex;
    align-items: flex-start;
    gap: 20px;
    transition: var(--transition);
}

.education-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.education-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    justify-content: center;
    align-items: center;
    flex-shrink: 0;
}

.education-icon i {
    font-size: 1.5rem;
    color: var(--light-text);
}

.education-details h3 {
    color: var(--primary-color);
    margin-bottom: 5px;
}

.education-details h4 {
    color: var(--secondary-color);
    font-weight: 500;
    margin-bottom: 10px;
}

.institution, .duration, .grade {
    margin-bottom: 5px;
}

.grade {
    font-weight: 500;
}

/* Projects Section */
.projects-content {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.project-card {
    background-color: var(--card-bg);
    border-radius: 10px;
    box-shadow: var(--shadow);
    overflow: hidden;
    display: flex;
    transition: var(--transition);
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.project-image {
    flex: 1;
    min-width: 300px;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: #f5f5f5;
}

.project-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 50px;
}

.project-placeholder i {
    font-size: 5rem;
    color: var(--primary-color);
}

.project-details {
    flex: 2;
    padding: 30px;
}

.project-details h3 {
    color: var(--primary-color);
    margin-bottom: 15px;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 20px;
}

.project-tags span {
    background-color: rgba(26, 35, 126, 0.1);
    color: var(--primary-color);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
}

/* Certifications Section */
.certifications-content {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.certification-card {
    background-color: var(--card-bg);
    border-radius: 10px;
    box-shadow: var(--shadow);
    padding: 30px;
    display: flex;
    align-items: flex-start;
    gap: 20px;
    transition: var(--transition);
}

.certification-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.certification-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    justify-content: center;
    align-items: center;
    flex-shrink: 0;
}

.certification-icon i {
    font-size: 1.5rem;
    color: var(--light-text);
}

.certification-details h3 {
    color: var(--primary-color);
    margin-bottom: 10px;
}

.issuer {
    color: var(--secondary-color);
    font-weight: 500;
    margin-bottom: 10px;
}

.cert-id {
    font-size: 0.9rem;
    color: #757575;
}

/* Contact Section */
.contact-content {
    display: flex;
    gap: 50px;
}

.contact-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 30px;
}

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

.contact-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    justify-content: center;
    align-items: center;
    flex-shrink: 0;
}

.contact-icon i {
    font-size: 1.2rem;
    color: var(--light-text);
}

.contact-text h3 {
    font-size: 1.2rem;
    margin-bottom: 5px;
    color: var(--primary-color);
}

.contact-form {
    flex: 1;
    background-color: var(--card-bg);
    padding: 30px;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #e0e0e0;
    border-radius: 5px;
    font-family: 'Poppins', sans-serif;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(26, 35, 126, 0.2);
}

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

/* Footer */
.footer {
    background-color: var(--primary-color);
    color: var(--light-text);
    padding: 50px 0 20px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.footer-logo h2 {
    color: var(--light-text);
    margin-bottom: 5px;
}

.footer-logo p {
    opacity: 0.8;
}

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

.footer-social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--light-text);
    transition: var(--transition);
}

.footer-social a:hover {
    background-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    opacity: 0.7;
    font-size: 0.9rem;
}