/* ===== CSS Variables & Fonts ===== */
:root {
    /* Sleek Tech Palette */
    --bg-dark: #050505;
    --bg-card: rgba(18, 18, 18, 0.6);
    --border-glass: rgba(255, 255, 255, 0.08);
    
    --text-primary: #ffffff;
    --text-secondary: #a1a1aa;
    --text-accent: #38bdf8; /* Sky Blue */

    --theme-cyan: #0ea5e9;
    --theme-emerald: #10b981;
    --theme-glow: rgba(14, 165, 233, 0.15);
    
    --gradient-primary: linear-gradient(135deg, var(--theme-cyan), var(--theme-emerald));
    --gradient-hover: linear-gradient(135deg, #0284c7, #059669);
    
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    
    --font-heading: 'Inter', sans-serif;
    --font-body: 'Inter', sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

::selection {
    background-color: rgba(14, 165, 233, 0.4);
    color: white;
}

/* Background Grid Pattern */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    z-index: -1;
    pointer-events: none;
    -webkit-mask-image: linear-gradient(to bottom, black 0%, transparent 80%);
    mask-image: linear-gradient(to bottom, black 0%, transparent 80%);
}

/* Mouse Glow Effect */
.cursor-glow {
    position: fixed;
    top: 0;
    left: 0;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(56, 189, 248, 0.1) 0%, rgba(139, 92, 246, 0.1) 30%, transparent 60%);
    pointer-events: none;
    z-index: 99; /* Below navbar (100) but above content to give it a neat tint */
    filter: blur(50px);
    opacity: 0;
    transition: opacity 0.5s ease;
    will-change: transform, opacity;
}

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--text-primary);
    line-height: 1.2;
    letter-spacing: -0.02em;
}

p {
    color: var(--text-secondary);
}

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

/* ===== Layout Utilities ===== */
.section {
    padding: 100px 5%;
    max-width: 1200px;
    margin: 0 auto;
}

/* ===== Components ===== */

/* Scroll Progress Bar */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 2px;
    background: var(--gradient-primary);
    z-index: 1000;
    width: 0%;
    box-shadow: 0 0 10px var(--theme-cyan);
    transition: width 0.1s ease;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 20px 5%;
    z-index: 100;
    transition: var(--transition-smooth);
    background: transparent;
}

.navbar.scrolled {
    background: rgba(5, 5, 5, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-glass);
    padding: 15px 5%;
}

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

.logo {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-secondary);
    letter-spacing: -0.5px;
    transition: var(--transition-smooth);
}

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

.logo span {
    color: var(--text-primary);
}

.nav-links {
    display: flex;
    gap: 35px;
    list-style: none;
}

.nav-link {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    position: relative;
    letter-spacing: 0.5px;
}

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

/* Minimalist Nav Indicator */
.nav-link::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition-smooth);
    border-radius: 2px;
    transform: translateX(-50%);
}

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

/* Dropdown styles */
.dropdown {
    position: relative;
    display: flex;
    align-items: center;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 200px;
    margin-top: 15px;
    padding: 15px 0;
    list-style: none;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition-smooth);
    z-index: 1000;
    background: rgba(18, 18, 18, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-glass);
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

/* Arrow indicator for dropdown menu */
.dropdown-menu::before {
    content: '';
    position: absolute;
    top: -6px;
    left: 30px;
    width: 10px;
    height: 10px;
    background: #121212;
    border-left: 1px solid var(--border-glass);
    border-top: 1px solid var(--border-glass);
    transform: rotate(45deg);
}

.dropdown-menu li {
    width: 100%;
}

.dropdown-menu .nav-link {
    display: block;
    padding: 10px 25px;
    font-size: 0.85rem;
    white-space: nowrap;
}

.dropdown-menu .nav-link::after {
    display: none; /* Hide the sliding indicator in dropdown items */
}

.dropdown-menu .nav-link:hover {
    color: var(--text-accent);
    background: rgba(255,255,255,0.03);
}

/* Show dropdown on hover (Desktop) */
@media (min-width: 769px) {
    .dropdown:hover > .dropdown-menu {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }
}

.dropdown-icon {
    margin-left: 8px;
    width: 10px;
    height: 10px;
    transition: transform 0.3s ease;
    opacity: 0.6;
}

.dropdown:hover .dropdown-icon {
    opacity: 1;
}

.dropdown.active .dropdown-icon {
    transform: rotate(180deg);
}

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
    z-index: 101;
}

.mobile-menu-btn span {
    width: 26px;
    height: 2px;
    background-color: var(--text-primary);
    transition: var(--transition-smooth);
}

/* Sharp Glass Card - More 'Tech' less 'Aura/Purple' */
.glass-card {
    background: var(--bg-card);
    backdrop-filter: blur(8px); /* less blur for sharper look */
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid var(--border-glass);
    border-radius: 8px; /* Sharper corners */
    padding: 30px;
    transition: var(--transition-smooth);
}

.glass-card:hover {
    border-color: rgba(255, 255, 255, 0.15);
    background: rgba(25, 25, 25, 0.7);
    transform: translateY(-3px);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 6px; /* sharper corners */
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    text-align: center;
    transition: var(--transition-smooth);
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    border: none;
    box-shadow: 0 4px 15px var(--theme-glow);
}

.btn-primary:hover {
    background: var(--gradient-hover);
    box-shadow: 0 6px 20px rgba(14, 165, 233, 0.3);
    transform: translateY(-2px);
}

.btn-secondary {
    background: rgba(255,255,255,0.03);
    color: var(--text-primary);
    border: 1px solid var(--border-glass);
}

.btn-secondary:hover {
    border-color: var(--text-accent);
    background: rgba(14, 165, 233, 0.05);
    transform: translateY(-2px);
}

/* Section Headers */
.section-header {
    margin-bottom: 60px;
    text-align: left; /* left align for a more structured tech docs feel */
}

.section-header h2 {
    font-size: 2.2rem;
    margin-bottom: 15px;
    color: var(--text-primary);
    font-weight: 700;
}

.section-header h2 span {
    color: var(--text-accent);
}

.heading-line {
    height: 2px;
    width: 50px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

/* ===== Sections ===== */

/* Hero */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: 100px;
}

.hero-content {
    max-width: 800px;
}

.greeting {
    color: var(--theme-emerald);
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 1.1rem;
    margin-bottom: 12px;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.name {
    font-size: 4.5rem;
    font-weight: 800;
    margin-bottom: 10px;
    line-height: 1.1;
    color: var(--text-primary);
}

.role {
    font-size: 2rem;
    color: var(--text-secondary);
    margin-bottom: 25px;
    font-weight: 500;
}

.cursor {
    display: inline-block;
    width: 2px;
    background-color: var(--text-accent);
    animation: blink 1s infinite;
    margin-left: 5px;
}

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

.tagline {
    font-size: 1.25rem;
    color: var(--text-primary);
    margin-bottom: 25px;
    max-width: 650px;
    font-weight: 500;
}

.intro-description {
    font-size: 1.05rem;
    margin-bottom: 45px;
    max-width: 700px;
    color: var(--text-secondary);
}

.hero-cta {
    display: flex;
    gap: 15px;
}

/* About */
.about-content {
    display: flex;
    flex-direction: column;
    gap: 20px;
    font-size: 1.05rem;
}

.about-content strong {
    color: var(--text-primary);
    font-weight: 600;
}

/* Skills */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
}

.skill-category h3 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-glass);
    padding-bottom: 10px;
    font-weight: 600;
}

.skill-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.skill-list li {
    color: var(--text-secondary);
    position: relative;
    padding-left: 20px;
    font-size: 0.95rem;
}

.skill-list li::before {
    content: '▹';
    position: absolute;
    left: 0;
    top: 0;
    color: var(--text-accent);
}

/* Experience Timeline */
.timeline {
    position: relative;
    max-width: 850px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 0;
    height: 100%;
    width: 1px; /* Thinner line */
    background: var(--border-glass);
}

.timeline-item {
    position: relative;
    padding-left: 50px;
    margin-bottom: 40px;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-dot {
    position: absolute;
    left: 11px;
    top: 5px;
    width: 9px; /* Smaller, sharper dots */
    height: 9px;
    border-radius: 50%;
    background: var(--theme-cyan);
    box-shadow: 0 0 10px var(--theme-glow);
    z-index: 1;
}

.timeline-content {
    padding: 25px;
    border-left: 2px solid transparent;
}

.timeline-item:hover .timeline-content {
    border-left-color: var(--theme-emerald);
}

.timeline-date {
    display: inline-block;
    color: var(--theme-emerald);
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 10px;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.timeline-content h3 {
    font-size: 1.25rem;
    margin-bottom: 5px;
    color: var(--text-primary);
}

.timeline-content h4 {
    color: var(--text-secondary);
    font-weight: 400;
    margin-bottom: 15px;
    font-size: 1rem;
}

.timeline-content ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.timeline-content li {
    position: relative;
    padding-left: 15px;
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.timeline-content li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--theme-cyan);
    font-size: 0.9em;
}

/* Projects */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 25px;
}

.project-card {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.project-content {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.project-header {
    margin-bottom: 15px;
}

.project-header h3 {
    font-size: 1.3rem;
    margin-bottom: 5px;
    color: var(--text-primary);
}

.project-duration {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-family: var(--font-heading);
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.project-tech span {
    font-size: 0.75rem;
    font-family: var(--font-heading);
    background: rgba(14, 165, 233, 0.1);
    padding: 4px 10px;
    border-radius: 4px; /* sharp */
    color: var(--text-accent);
    font-weight: 500;
}

.project-desc {
    margin-bottom: 15px;
    flex-grow: 1;
    font-size: 0.95rem;
}

.project-impact {
    font-size: 0.9rem;
    color: var(--text-primary);
    border-top: 1px solid var(--border-glass);
    padding-top: 15px;
}

/* Tilt Effect Class */
.tilt-card {
    transform-style: preserve-3d;
    transform: perspective(1000px);
}

/* Goals */
.goals-content {
    max-width: 800px;
}

.goals-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.goals-list li {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 15px 20px;
    background: rgba(255, 255, 255, 0.02);
    border-radius: 8px;
    border: 1px solid var(--border-glass);
    transition: var(--transition-smooth);
}

.goals-list li:hover {
    border-color: rgba(255,255,255,0.15);
    background: rgba(255, 255, 255, 0.04);
}

.goal-icon {
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.goals-list p {
    color: var(--text-primary);
    font-weight: 500;
    font-size: 1rem;
}

/* Contact */
.contact-container {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 40px;
}

.contact-info h3 {
    font-size: 1.6rem;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.contact-info p {
    margin-bottom: 30px;
    font-size: 0.95rem;
}

.social-links {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.social-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 12px 15px;
    background: rgba(255, 255, 255, 0.02);
    border-radius: 6px;
    transition: var(--transition-smooth);
    border: 1px solid var(--border-glass);
}

a.social-item:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255,255,255,0.2);
    color: var(--text-primary);
}

.social-item svg {
    color: var(--text-accent);
}

/* Promo Card styling (moved from inline) */
.contact-promo {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.promo-icon {
    margin-bottom: 20px;
}

.contact-promo h3 {
    font-size: 1.6rem;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.contact-promo p {
    margin-bottom: 30px;
    font-size: 1.05rem;
    color: var(--text-secondary);
}

.promo-actions {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    margin-top: auto;
}

.promo-actions .btn {
    flex: 1;
    min-width: 200px;
}

/* Footer */
footer {
    text-align: center;
    padding: 30px 5%;
    border-top: 1px solid var(--border-glass);
    margin-top: 80px;
}

footer p {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* ===== Animations (Scroll Reveal) ===== */
.reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s cubic-bezier(0.5, 0, 0, 1);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* ===== Responsive Design ===== */
@media (max-width: 992px) {
    .contact-container {
        grid-template-columns: 1fr;
    }
    
    .name {
        font-size: 3.5rem;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 80px 5%;
    }

    .name {
        font-size: 2.8rem;
    }

    .role {
        font-size: 1.5rem;
    }

    .hero-cta {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    /* Mobile Menu */
    .mobile-menu-btn {
        display: flex;
    }

    .nav-links {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: rgba(5, 5, 5, 0.98);
        backdrop-filter: blur(16px);
        flex-direction: column;
        align-items: center;
        padding: 30px 0;
        gap: 25px;
        clip-path: circle(0% at top right);
        transition: all 0.4s ease-in-out;
        border-bottom: 1px solid var(--border-glass);
    }

    .nav-links.active {
        clip-path: circle(150% at top right);
    }

    /* Mobile Dropdown adjustment */
    .dropdown {
        flex-direction: column;
        width: 100%;
    }

    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        background: transparent;
        border: none;
        box-shadow: none;
        padding: 0;
        max-height: 0;
        overflow: hidden;
        transition: all 0.3s ease-in-out;
        margin-top: 0;
        width: 100%;
        display: flex;
        flex-direction: column;
        align-items: center;
        border-radius: 0;
    }

    .dropdown.active .dropdown-menu {
        max-height: 500px;
        margin-top: 15px;
        padding-bottom: 10px;
    }

    .dropdown-menu::before {
        display: none;
    }

    .dropdown-menu li .nav-link {
        font-size: 0.9rem;
        padding: 5px 0;
        color: var(--text-secondary);
    }
    
    .dropdown-icon {
        margin-left: 10px;
        width: 12px;
        height: 12px;
    }
    
    .mobile-menu-btn.active span:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    .mobile-menu-btn.active span:nth-child(2) {
        opacity: 0;
    }
    .mobile-menu-btn.active span:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
}

@media (max-width: 480px) {
    .name {
        font-size: 2.2rem;
    }
    
    .section-header h2 {
        font-size: 1.8rem;
    }
    
    .timeline {
        padding-left: 10px;
    }
    
    .timeline::before {
        left: 5px;
    }
    
    .timeline-dot {
        left: 0;
    }
    
    .timeline-item {
        padding-left: 25px;
    }
}