/* ============================================
   Modern Portfolio Website - Bhavya Pandey
   Beautiful Color Scheme: Vibrant Purple-Pink-Blue Gradient
   ============================================ */

:root {
    /* Vibrant Primary Colors */
    --primary-purple: #8b5cf6;
    --primary-pink: #ec4899;
    --primary-blue: #3b82f6;
    --primary-cyan: #06b6d4;
    
    /* Gradient Colors */
    --gradient-primary: linear-gradient(135deg, #8b5cf6 0%, #ec4899 50%, #3b82f6 100%);
    --gradient-secondary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-vibrant: linear-gradient(135deg, #f093fb 0%, #f5576c 50%, #4facfe 100%);
    --gradient-soft: linear-gradient(135deg, #fce7f3 0%, #e0e7ff 50%, #dbeafe 100%);
    --gradient-hero: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    --gradient-card: linear-gradient(135deg, #a78bfa 0%, #ec4899 100%);
    --gradient-button: linear-gradient(135deg, #8b5cf6 0%, #ec4899 100%);
    
    /* Accent Colors */
    --accent-purple: #a78bfa;
    --accent-pink: #f472b6;
    --accent-blue: #60a5fa;
    --accent-cyan: #22d3ee;
    
    /* Neutral Colors */
    --white: #ffffff;
    --light-gray: #f8fafc;
    --gray: #64748b;
    --dark-gray: #1e293b;
    --text-dark: #0f172a;
    --text-light: #6b7280;
    
    /* Shadows with color tints */
    --shadow-sm: 0 2px 4px rgba(139, 92, 246, 0.1);
    --shadow-md: 0 4px 6px rgba(139, 92, 246, 0.15);
    --shadow-lg: 0 10px 25px rgba(139, 92, 246, 0.2);
    --shadow-xl: 0 20px 40px rgba(139, 92, 246, 0.25);
    --shadow-glow: 0 0 20px rgba(139, 92, 246, 0.3);
}

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

  html {
    scroll-behavior: smooth;
    font-size: 16px;
  }

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

/* ============================================
   Navigation
   ============================================ */

.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    padding: 1rem 0;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.navbar-brand .brand-name {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.navbar-nav .nav-link {
    color: var(--text-dark) !important;
    font-weight: 500;
    margin: 0 0.5rem;
    padding: 0.5rem 1rem !important;
    border-radius: 8px;
    transition: all 0.3s ease;
    position: relative;
}

.navbar-nav .nav-link:hover {
    color: var(--primary-purple) !important;
    background: var(--gradient-soft);
    transform: translateY(-2px);
}

.navbar-nav .nav-link.btn-download {
    background: var(--gradient-button);
    color: var(--white) !important;
    font-weight: 600;
    margin-left: 1rem;
}

.navbar-nav .nav-link.btn-download:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    color: var(--white) !important;
}

.navbar-nav .nav-link.active {
    color: var(--primary-purple) !important;
    background: var(--gradient-soft);
    font-weight: 600;
}

/* ============================================
   Hero Section
   ============================================ */

.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--gradient-soft);
    position: relative;
    overflow: hidden;
    padding-top: 80px;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 200%;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.15) 0%, rgba(236, 72, 153, 0.1) 50%, transparent 70%);
    animation: float 20s ease-in-out infinite;
}

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

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 1s ease;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--gray);
    margin-bottom: 1rem;
    animation: fadeInUp 1s ease 0.2s both;
}

.hero-intro {
    font-size: 1.1rem;
    color: var(--gray);
    margin-bottom: 2rem;
    line-height: 1.8;
    animation: fadeInUp 1s ease 0.4s both;
}

.hero-buttons {
    animation: fadeInUp 1s ease 0.6s both;
}

.btn-primary-custom {
    background: var(--gradient-button);
    border: none;
    color: var(--white);
    padding: 0.75rem 2rem;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 50px;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-md);
    margin-right: 1rem;
    margin-bottom: 1rem;
    position: relative;
    overflow: hidden;
}

.btn-primary-custom::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s;
}

.btn-primary-custom:hover::before {
    left: 100%;
}

.btn-primary-custom:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    color: var(--white);
}

.btn-outline-custom {
    border: 2px solid var(--primary-purple);
    color: var(--primary-purple);
    padding: 0.75rem 2rem;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 50px;
    transition: all 0.3s ease;
    background: transparent;
    margin-bottom: 1rem;
}

.btn-outline-custom:hover {
    background: var(--gradient-button);
    border-color: transparent;
    color: var(--white);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

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

/* ============================================
   Section Styles
   ============================================ */

.section {
    padding: 5rem 0;
    position: relative;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 1rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    text-align: center;
    color: var(--gray);
    font-size: 1.1rem;
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.section-alt {
    background: var(--light-gray);
}

/* ============================================
   About Section
   ============================================ */

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

.about-summary {
    background: var(--white);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: var(--shadow-md);
    margin-top: 2rem;
}

.about-summary ul {
    list-style: none;
    padding: 0;
}

.about-summary li {
    padding: 0.75rem 0;
    padding-left: 2rem;
    position: relative;
    color: var(--text-dark);
}

.about-summary li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-purple);
    font-weight: bold;
    font-size: 1.2rem;
}

/* ============================================
   Skills Section
   ============================================ */

.skills-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.skill-category {
    background: var(--white);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
}

.skill-category:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.skill-category h3 {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--accent-purple);
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.skill-tag {
    background: var(--gradient-soft);
    color: var(--primary-purple);
    padding: 0.5rem 1.25rem;
    border-radius: 25px;
    font-weight: 500;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.skill-tag:hover {
    background: var(--gradient-button);
    color: var(--white);
    transform: scale(1.05);
    border-color: var(--primary-purple);
    box-shadow: var(--shadow-md);
}

/* ============================================
   Experience Section
   ============================================ */

.timeline {
    position: relative;
    padding: 2rem 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--gradient-primary);
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
    width: 50%;
    padding: 0 2rem;
}

.timeline-item:nth-child(odd) {
    left: 0;
    text-align: right;
}

.timeline-item:nth-child(even) {
    left: 50%;
    text-align: left;
}

.timeline-content {
    background: var(--white);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    position: relative;
}

.timeline-content:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.timeline-content::before {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    background: var(--gradient-button);
    border-radius: 50%;
    top: 50%;
    transform: translateY(-50%);
    border: 4px solid var(--white);
    box-shadow: 0 0 0 4px var(--primary-purple), 0 0 15px rgba(139, 92, 246, 0.5);
}

.timeline-item:nth-child(odd) .timeline-content::before {
    right: -2.5rem;
}

.timeline-item:nth-child(even) .timeline-content::before {
    left: -2.5rem;
}

.company-name {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.job-title {
    font-size: 1.1rem;
    color: var(--gray);
    margin-bottom: 1rem;
    font-weight: 600;
}

.job-description {
    color: var(--text-dark);
    line-height: 1.8;
}

.job-description ul {
    list-style: none;
    padding: 0;
    margin-top: 1rem;
}

.job-description li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.job-description li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--primary-purple);
    font-weight: bold;
}

.project-highlight {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 2px solid var(--light-gray);
}

.project-highlight h4 {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.project-tech {
    font-size: 0.9rem;
    color: var(--gray);
    font-style: italic;
    margin-bottom: 0.5rem;
}

/* ============================================
   Projects Section
   ============================================ */

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.project-card {
    background: var(--white);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
  position: relative;
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.project-card:hover::before {
    transform: scaleX(1);
}

.project-header {
    background: var(--gradient-soft);
    padding: 1.5rem;
}

.project-title {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.project-body {
    padding: 1.5rem;
}

.project-description {
    color: var(--gray);
    line-height: 1.8;
}

/* ============================================
   Education Section
   ============================================ */

.education-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.education-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    text-align: center;
    border-top: 4px solid;
    border-image: var(--gradient-primary) 1;
}

.education-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.degree-name {
    font-size: 1.3rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.institution-name {
    font-size: 1rem;
    color: var(--gray);
    margin-bottom: 1rem;
}

.percentage {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-purple);
    background: var(--gradient-soft);
    padding: 0.5rem 1rem;
    border-radius: 10px;
    display: inline-block;
    border: 2px solid var(--accent-purple);
}

/* ============================================
   Contact Section
   ============================================ */

.contact-section {
    background: var(--gradient-soft);
    padding: 5rem 0;
}

.contact-intro {
    text-align: center;
    font-size: 1.2rem;
    color: var(--gray);
    margin-bottom: 3rem;
}

.contact-form {
    max-width: 600px;
    margin: 0 auto;
    background: var(--white);
    padding: 3rem;
    border-radius: 15px;
    box-shadow: var(--shadow-lg);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
    display: block;
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--light-gray);
    border-radius: 10px;
    font-size: 1rem;
    transition: all 0.3s ease;
    font-family: 'Poppins', sans-serif;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-purple);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.15);
}

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

.btn-submit {
    width: 100%;
    background: var(--gradient-button);
    border: none;
    color: var(--white);
    padding: 0.75rem 2rem;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 50px;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.btn-submit::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s;
}

.btn-submit:hover::before {
    left: 100%;
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: var(--white);
}

.field-validation-error {
    color: #dc3545;
    font-size: 0.875rem;
    margin-top: 0.25rem;
    display: block;
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
    padding: 1rem;
    border-radius: 10px;
    margin-bottom: 1.5rem;
    border-left: 4px solid #10b981;
}

/* ============================================
   Footer
   ============================================ */

.footer {
    background: var(--dark-gray);
    color: var(--white);
    padding: 2rem 0;
    text-align: center;
}

.footer p {
    margin: 0;
    color: var(--light-gray);
}

/* ============================================
   Responsive Design
   ============================================ */

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.2rem;
    }

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

    .timeline::before {
        left: 2rem;
    }

    .timeline-item {
        width: 100%;
        left: 0 !important;
        text-align: left !important;
        padding-left: 4rem;
    }

    .timeline-item .timeline-content::before {
        left: -2.5rem !important;
    }

    .skills-container,
    .projects-grid,
    .education-grid {
        grid-template-columns: 1fr;
    }

    .contact-form {
        padding: 2rem;
    }
}

@media (max-width: 576px) {
    .hero-title {
        font-size: 2rem;
    }

    .btn-primary-custom,
    .btn-outline-custom {
        width: 100%;
        margin-right: 0;
    }
}

/* ============================================
   Animations
   ============================================ */

.fade-in {
    animation: fadeIn 1s ease;
}

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

.slide-in-left {
    animation: slideInLeft 0.8s ease;
}

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

.slide-in-right {
    animation: slideInRight 0.8s ease;
}

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

/* ============================================
   Loading Animation
   ============================================ */

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.loading {
    animation: pulse 2s ease-in-out infinite;
}

/* ============================================
   Scroll to Top Button (Optional)
   ============================================ */

.scroll-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--gradient-button);
    color: var(--white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    transition: all 0.3s ease;
    z-index: 1000;
}

.scroll-to-top:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.scroll-to-top.show {
    display: flex;
}