/* 
   yuvrajprataprajwade.in
   Premium Minimalist Developer Portfolio Styling
   Vanilla CSS Design System
*/

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
    --bg-primary: #080a0f;
    --bg-secondary: #0f131a;
    --bg-card: #141a24;
    --bg-card-hover: #19202c;
    --accent-blue: #3b82f6;
    --accent-cyan: #06b6d4;
    --accent-gradient: linear-gradient(135deg, #3b82f6 0%, #06b6d4 100%);
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    --border-color: rgba(255, 255, 255, 0.06);
    --border-hover: rgba(6, 182, 212, 0.25);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
    
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-sans);
}

body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* Background Gradients */
.bg-glow {
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.05) 0%, rgba(0, 0, 0, 0) 70%);
    top: -100px;
    right: -100px;
    z-index: -1;
    pointer-events: none;
}

.bg-glow-bottom {
    position: absolute;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.04) 0%, rgba(0, 0, 0, 0) 70%);
    bottom: 10%;
    left: -100px;
    z-index: -1;
    pointer-events: none;
}

/* Container */
.container {
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Header & Nav */
header {
    padding: 2.5rem 0;
    border-bottom: 1px solid var(--border-color);
}

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

.logo {
    font-family: var(--font-mono);
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--text-primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    letter-spacing: -0.02em;
}

.logo span {
    color: var(--accent-cyan);
}

.nav-links {
    display: flex;
    gap: 1.5rem;
    list-style: none;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition-smooth);
}

.nav-links a:hover {
    color: var(--text-primary);
}

/* Hero Section */
.hero {
    padding: 6rem 0 4rem 0;
}

.badge {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--accent-cyan);
    background: rgba(6, 182, 212, 0.08);
    border: 1px solid rgba(6, 182, 212, 0.2);
    padding: 0.35rem 0.75rem;
    border-radius: 9999px;
    display: inline-block;
    margin-bottom: 1.5rem;
}

h1 {
    font-size: 3.5rem;
    font-weight: 700;
    letter-spacing: -0.04em;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    background: linear-gradient(180deg, #ffffff 0%, #a3a3a3 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin-bottom: 2rem;
    font-weight: 400;
}

.cta-group {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    text-decoration: none;
    transition: var(--transition-smooth);
    cursor: pointer;
}

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

.btn-primary:hover {
    background: #e5e7eb;
    transform: translateY(-1px);
}

.btn-secondary {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    color: var(--text-primary);
    border-color: var(--text-secondary);
}

/* Sections General */
section {
    padding: 4rem 0;
    border-top: 1px solid var(--border-color);
}

.section-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 2.5rem;
    letter-spacing: -0.02em;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.section-title::before {
    content: '//';
    color: var(--accent-cyan);
    font-family: var(--font-mono);
}

/* About / Intro */
.about-text {
    font-size: 1.05rem;
    color: var(--text-secondary);
    max-width: 750px;
    margin-bottom: 1.5rem;
}

/* Projects Grid */
.projects-grid {
    display: grid;
    grid-template-cols: 1fr;
    gap: 2rem;
}

@media (min-width: 768px) {
    .projects-grid {
        grid-template-cols: 1fr 1fr;
    }
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: var(--transition-smooth);
}

.project-card:hover {
    border-color: var(--border-hover);
    background: var(--bg-card-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.project-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
}

.project-status {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    text-transform: uppercase;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-weight: 500;
}

.status-live {
    background: rgba(16, 185, 129, 0.1);
    color: #10b981;
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.status-dev {
    background: rgba(245, 158, 11, 0.1);
    color: #f59e0b;
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.project-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

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

.tech-tag {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    background: rgba(255, 255, 255, 0.04);
    color: var(--text-secondary);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    border: 1px solid var(--border-color);
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--accent-cyan);
    text-decoration: none;
    transition: var(--transition-smooth);
}

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

/* Skills Grid */
.skills-container {
    display: grid;
    grid-template-cols: 1fr;
    gap: 1.5rem;
}

@media (min-width: 640px) {
    .skills-container {
        grid-template-cols: 1fr 1fr;
    }
}

.skills-category {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
}

.category-name {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.5rem;
}

.skills-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

/* Contact Area */
.contact-layout {
    display: grid;
    grid-template-cols: 1fr;
    gap: 3rem;
}

@media (min-width: 768px) {
    .contact-layout {
        grid-template-cols: 1.2fr 1fr;
    }
}

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

.contact-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1.25rem;
    transition: var(--transition-smooth);
}

.contact-card:hover {
    border-color: var(--border-hover);
}

.contact-icon {
    background: rgba(6, 182, 212, 0.08);
    border: 1px solid rgba(6, 182, 212, 0.15);
    color: var(--accent-cyan);
    width: 48px;
    height: 48px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-details h4 {
    font-size: 0.85rem;
    font-family: var(--font-mono);
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
}

.contact-details p, .contact-details a {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
    text-decoration: none;
}

.contact-details a:hover {
    color: var(--accent-cyan);
    text-decoration: underline;
}

.copy-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.75rem;
    font-family: var(--font-mono);
    margin-left: 0.5rem;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    transition: var(--transition-smooth);
}

.copy-btn:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

/* Legal & Compliance Footer */
.compliance-section {
    background: var(--bg-secondary);
    padding: 3rem 0;
    border-top: 1px solid var(--border-color);
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.compliance-grid {
    display: grid;
    grid-template-cols: 1fr;
    gap: 2rem;
}

@media (min-width: 768px) {
    .compliance-grid {
        grid-template-cols: 1.5fr 1fr;
    }
}

.compliance-details h4 {
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.compliance-details p {
    line-height: 1.6;
    margin-bottom: 0.5rem;
}

.compliance-links {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.compliance-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition-smooth);
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.compliance-links a:hover {
    color: var(--accent-cyan);
}

/* Footer Copyright */
footer {
    background: var(--bg-primary);
    padding: 2rem 0;
    border-top: 1px solid var(--border-color);
    text-align: center;
    font-size: 0.8rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

/* Utility Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in {
    animation: fadeIn 0.8s ease forwards;
}

/* Mobile Navigation Button */
.mobile-nav-toggle {
    display: none;
    background: transparent;
    border: none;
    cursor: pointer;
    position: relative;
    width: 24px;
    height: 18px;
    z-index: 1001;
    padding: 0;
    flex-direction: column;
    justify-content: space-between;
}

.mobile-nav-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition-smooth);
}

/* Hamburger to 'X' animation */
.mobile-nav-toggle.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.mobile-nav-toggle.active span:nth-child(2) {
    opacity: 0;
    transform: translateX(-10px);
}

.mobile-nav-toggle.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* Responsive adjustments */
@media (max-width: 768px) {
    header {
        padding: 1.5rem 0;
        position: relative;
    }

    .mobile-nav-toggle {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 320px;
        height: 100vh;
        background-color: rgba(15, 19, 26, 0.96);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        border-left: 1px solid var(--border-color);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 2.5rem;
        transition: var(--transition-smooth);
        z-index: 1000;
        box-shadow: var(--shadow-md);
    }

    .nav-links.active {
        right: 0;
    }

    .nav-links a {
        font-size: 1.15rem;
        font-weight: 500;
        width: 100%;
        text-align: center;
        padding: 0.5rem 0;
    }
    
    section {
        padding: 3rem 0;
    }
}

@media (max-width: 640px) {
    h1 {
        font-size: 2.3rem;
        letter-spacing: -0.03em;
    }
    
    .hero-subtitle {
        font-size: 1.05rem;
    }
    
    .cta-group {
        flex-direction: column;
        align-items: stretch;
        gap: 0.75rem;
    }
    
    .btn {
        justify-content: center;
        padding: 0.85rem 1.25rem;
    }

    .container {
        padding: 0 1.5rem;
    }
    
    .about-text {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .logo {
        font-size: 0.85rem;
    }
    
    h1 {
        font-size: 2rem;
    }
}