/* ==========================================================================
   DESIGN SYSTEM tokens
   ========================================================================== */
:root {
    /* Dark Theme (Default) */
    --bg-primary: #0a0d14;
    --bg-secondary: #101524;
    --bg-navbar: rgba(10, 13, 20, 0.75);
    --border-color: rgba(255, 255, 255, 0.08);
    --card-shadow: rgba(0, 0, 0, 0.3);
    
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    
    --glow-secondary: rgba(99, 102, 241, 0.15);
    
    /* Accents & Gradients */
    --accent-1: #6366f1; /* Indigo */
    --accent-2: #f43f5e; /* Rose */
    --gradient-primary: linear-gradient(135deg, var(--accent-1), var(--accent-2));
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] {
    /* Light Theme */
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-navbar: rgba(248, 250, 252, 0.85);
    --border-color: rgba(0, 0, 0, 0.06);
    --card-shadow: rgba(0, 0, 0, 0.05);
    
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    
    --glow-secondary: rgba(99, 102, 241, 0.05);
}

/* ==========================================================================
   RESET & OUTLINE SETUP
   ========================================================================== */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: 'Outfit', sans-serif;
    line-height: 1.6;
    transition: var(--transition);
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
}

/* ==========================================================================
   GLOBAL UTILITIES
   ========================================================================== */
.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 50px 0;
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 800;
}

/* Glassmorphic Panel Styles */
.glass-panel {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    box-shadow: 0 8px 32px 0 var(--card-shadow);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: 16px;
    padding: 30px;
    transition: var(--transition);
}

.glass-panel:hover {
    border-color: rgba(99, 102, 241, 0.3);
    box-shadow: 0 12px 40px 0 rgba(99, 102, 241, 0.1);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    font-size: 14px;
    font-weight: 600;
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition);
}

.btn-primary {
    background: var(--gradient-primary);
    color: #ffffff;
    border: none;
    box-shadow: 0 4px 15px rgba(244, 63, 94, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(244, 63, 94, 0.5);
}

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

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

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

.btn-outline:hover {
    background: var(--accent-1);
    color: #ffffff;
}

.btn-sm {
    padding: 8px 16px;
    font-size: 13px;
}

/* Section Headers */
.section-header {
    margin-bottom: 50px;
    text-align: center;
}

.section-header h2 {
    font-size: 32px;
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    text-transform: capitalize;
}

.title-bar {
    width: 60px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: 2px;
    margin: 12px auto 0 auto;
}

/* ==========================================================================
   NAVIGATION BAR
   ========================================================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: var(--bg-navbar);
    border-bottom: 1px solid var(--border-color);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    transition: var(--transition);
}

.nav-container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    height: 70px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 20px;
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.logo span {
    color: var(--accent-2);
}

.nav-links {
    display: flex;
    gap: 30px;
}

.nav-links a {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition);
    position: relative;
    padding: 6px 0;
}

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

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition);
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.theme-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    width: 38px;
    height: 38px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.theme-btn:hover {
    border-color: var(--accent-1);
    color: var(--accent-1);
}

/* ==========================================================================
   HERO STYLE
   ========================================================================== */
.hero-section {
    position: relative;
    padding: 160px 0 100px 0;
    min-height: 80vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-container {
    position: relative;
    z-index: 10;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.badge-glow {
    display: inline-block;
    padding: 6px 16px;
    font-size: 13px;
    font-weight: 600;
    border-radius: 50px;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.2);
    color: var(--accent-1);
    margin-bottom: 24px;
}

.hero-content h1 {
    font-size: 56px;
    line-height: 1.15;
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 800;
    margin-bottom: 20px;
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 36px auto;
}

.hero-ctas {
    display: flex;
    justify-content: center;
    gap: 16px;
}

.hero-bg-glow {
    position: absolute;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.08) 0%, rgba(0, 0, 0, 0) 70%);
    top: -100px;
    left: 50%;
    transform: translateX(-50%);
    pointer-events: none;
    z-index: 1;
}

/* ==========================================================================
   ABOUT & SKILLS GRID
   ========================================================================== */
.about-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 30px;
    align-items: start;
}

.about-bio h3 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 16px;
}

.about-bio p {
    color: var(--text-secondary);
    margin-bottom: 18px;
}

.skills-panels {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.skills-category h4 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--accent-1);
}

.skills-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.skills-list span {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 6px 14px;
    font-size: 13px;
    font-weight: 500;
    border-radius: 8px;
}

/* ==========================================================================
   EXPERIENCE SECTION (INTERACTIVE TABS)
   ========================================================================== */
.experience-tab-container {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 40px;
    padding: 40px;
}

.tabs-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.tab-btn {
    background: transparent;
    border: none;
    border-left: 2px solid var(--border-color);
    padding: 16px 20px;
    text-align: left;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.tab-btn:hover {
    background: rgba(255, 255, 255, 0.02);
    border-color: var(--text-secondary);
}

.tab-btn.active {
    border-color: var(--accent-2);
    background: rgba(244, 63, 94, 0.04);
}

.tab-btn .company-name {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
}

.tab-btn .role-title {
    font-size: 12px;
    color: var(--text-secondary);
}

.tabs-contents {
    padding-left: 20px;
}

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
    animation: fadeIn 0.4s ease;
}

.role-header h3 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 6px;
}

.accent-text {
    color: var(--accent-2);
}

.role-dates {
    display: block;
    font-size: 13px;
    color: var(--text-muted);
    font-weight: 500;
    margin-bottom: 24px;
}

.role-bullets {
    list-style: none;
}

.role-bullets li {
    position: relative;
    padding-left: 20px;
    color: var(--text-secondary);
    margin-bottom: 14px;
    font-size: 14px;
}

.role-bullets li::before {
    content: '→';
    position: absolute;
    left: 0;
    top: 0;
    color: var(--accent-1);
    font-weight: 700;
}

.intern-block {
    margin-bottom: 24px;
    border-bottom: 1px dashed var(--border-color);
    padding-bottom: 20px;
}

.intern-block:last-child {
    border-bottom: none;
    padding-bottom: 0;
    margin-bottom: 0;
}

.intern-block h5 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.intern-block p {
    font-size: 14px;
    color: var(--text-secondary);
}

/* ==========================================================================
   PROJECTS STYLE
   ========================================================================== */
.project-filters {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 40px;
}

.filter-btn {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 10px 20px;
    border-radius: 50px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--gradient-primary);
    color: #ffffff;
    border-color: transparent;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.2);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 24px;
}

.project-card {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.project-icon {
    font-size: 26px;
    color: var(--accent-2);
    margin-bottom: 16px;
}

.project-card h3 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 4px;
}

.project-tagline {
    font-size: 12px;
    font-weight: 600;
    color: var(--accent-1);
    letter-spacing: 0.5px;
    text-transform: uppercase;
    margin-bottom: 14px;
}

.project-desc {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: auto; /* Push tags to the bottom */
    padding-bottom: 20px;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.project-tags span {
    font-size: 11px;
    font-weight: 600;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 4px 10px;
    border-radius: 6px;
}

/* ==========================================================================
   CONTACT SECTION
   ========================================================================== */
.contact-box {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.contact-prompt {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 30px;
}

.contact-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 20px;
}

.contact-link-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    padding: 24px;
    border-radius: 12px;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.contact-link-card i {
    font-size: 24px;
    color: var(--accent-1);
    transition: var(--transition);
}

.contact-link-card span {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-muted);
}

.contact-link-card p {
    font-size: 14px;
    font-weight: 500;
    word-break: break-all;
}

.contact-link-card:hover {
    border-color: var(--accent-1);
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(99, 102, 241, 0.1);
}

.contact-link-card:hover i {
    transform: scale(1.1);
    color: var(--accent-2);
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.footer {
    border-top: 1px solid var(--border-color);
    padding: 30px 0;
    text-align: center;
    font-size: 13px;
    color: var(--text-muted);
    font-weight: 500;
}

/* ==========================================================================
   ANIMATIONS / MOBILE RESPONSIVENESS
   ========================================================================== */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 900px) {
    .about-grid {
        grid-template-columns: 1fr;
    }
    
    .experience-tab-container {
        grid-template-columns: 1fr;
        gap: 30px;
        padding: 20px;
    }
    
    .tabs-list {
        flex-direction: row;
        overflow-x: auto;
        padding-bottom: 10px;
        border-bottom: 1px solid var(--border-color);
    }
    
    .tab-btn {
        border-left: none;
        border-bottom: 2px solid var(--border-color);
        white-space: nowrap;
        padding: 10px 16px;
    }
    
    .tab-btn.active {
        border-bottom-color: var(--accent-2);
        background: transparent;
    }
    
    .tabs-contents {
        padding-left: 0;
    }
    
    .hero-content h1 {
        font-size: 40px;
    }
}

@media (max-width: 600px) {
    .nav-links {
        display: none; /* Mobile hamburger could go here, keeping simple for top-links */
    }
    
    .hero-ctas {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-ctas a {
        width: 100%;
        justify-content: center;
    }
}