/* Color Palette:
Primary: Deep Navy Blue (#0B1F3A)
Accent: Soft Electric Blue (#4DA3FF)
Secondary: Muted Lavender (#9C8CFF)
Background: Off-white (#F8FAFC)
Text: Charcoal black (#1A1A1A)
Dark Background: #0A0A0A
*/

:root {
    --primary: #0B1F3A;
    --accent: #4DA3FF;
    --secondary-accent: #9C8CFF;
    
    /* Light Mode */
    --bg-color: #F8FAFC;
    --bg-alt: #E2E8F0;
    --text-main: #1A1A1A;
    --text-muted: #475569;
    --card-bg: #FFFFFF;
    --card-border: rgba(11, 31, 58, 0.1);
    --nav-bg: rgba(248, 250, 252, 0.9);
}

[data-theme="dark"] {
    --bg-color: #0A0A0A;
    --bg-alt: #121212;
    --text-main: #F8FAFC;
    --text-muted: #A1A1AA;
    --card-bg: #1A1A1A;
    --card-border: rgba(156, 140, 255, 0.2);
    --nav-bg: rgba(10, 10, 10, 0.9);
    --primary: #0F2A4A; 
}

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

body {
    font-family: 'Inter', sans-serif;
    color: var(--text-main);
    background-color: var(--bg-color);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
    overflow-x: hidden;
}

html {
    scroll-behavior: smooth;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.text-center {
    text-align: center;
}

/* Typography */
h1, h2, h3, h4 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-main);
}
h1 {
    font-size: 3.5rem;
    margin-bottom: 0.5rem;
}
h1 span {
    color: var(--accent);
}
h2.title {
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--text-muted);
    margin-bottom: 1rem;
}
p.tagline {
    font-size: 1.125rem;
    max-width: 600px;
    margin-bottom: 2rem;
    color: var(--text-muted);
}
.section-title {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    text-align: center;
    position: relative;
}
.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--accent);
    margin: 1rem auto 0;
    border-radius: 2px;
}

/* Sections */
.section {
    padding: 6rem 0;
}
.bg-alt {
    background-color: var(--bg-alt);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    font-size: 1rem;
    border: 2px solid transparent;
}
.btn-primary {
    background-color: var(--accent);
    color: #0A0A0A;
}
.btn-primary:hover {
    background-color: var(--secondary-accent);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(156, 140, 255, 0.4);
}
.btn-outline {
    background-color: transparent;
    border: 2px solid var(--text-main);
    color: var(--text-main);
}
.btn-outline:hover {
    background-color: var(--text-main);
    color: var(--bg-color);
    border-color: var(--text-main);
}
.btn-ghost {
    background-color: transparent;
    color: var(--text-muted);
}
.btn-ghost:hover {
    color: var(--accent);
}
.btn-text {
    color: var(--accent);
    text-decoration: none;
    font-weight: 600;
    position: relative;
    display: inline-block;
}
.btn-text::after {
    content: '';
    position: absolute;
    width: 100%;
    transform: scaleX(0);
    height: 2px;
    bottom: -4px;
    left: 0;
    background-color: var(--accent);
    transform-origin: bottom right;
    transition: transform 0.25s ease-out;
}
.btn-text:hover::after {
    transform: scaleX(1);
    transform-origin: bottom left;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: 80px; 
    overflow: hidden;
}
#hero-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}
.hero-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    gap: 4rem;
    z-index: 1;
}
.hero-text {
    flex: 1;
    max-width: 600px;
}
.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
}
.avatar {
    width: 100%;
    max-width: 400px;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
    transition: transform 0.5s ease;
    object-fit: cover;
    aspect-ratio: 1/1;
}
.hero-image:hover .avatar {
    transform: translateY(-10px);
}
.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}
.greeting {
    color: var(--accent);
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
}

/* Cards */
.card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 2rem;
    transition: all 0.3s ease;
}
.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    border-color: var(--secondary-accent);
}

/* Skills */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}
.skill-category h3 {
    margin-bottom: 1.5rem;
    color: var(--accent);
    font-size: 1.25rem;
}
.skill-item {
    margin-bottom: 1.5rem;
}
.skill-item:last-child {
    margin-bottom: 0;
}
.skill-item span {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
    font-weight: 500;
}
.progress-bar {
    width: 100%;
    height: 6px;
    background: var(--bg-alt);
    border-radius: 3px;
    overflow: hidden;
}
.progress {
    height: 100%;
    background: linear-gradient(90deg, var(--accent), var(--secondary-accent));
    border-radius: 3px;
}

/* Projects */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}
.project-card {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}
.project-content h3 {
    margin-bottom: 1rem;
    font-size: 1.25rem;
}
.project-content p {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
}
.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 2rem;
}
.tech-stack span {
    font-size: 0.75rem;
    padding: 0.25rem 0.75rem;
    background: var(--bg-alt);
    border-radius: 20px;
    color: var(--text-main);
}
.project-links {
    display: flex;
    gap: 1rem;
}

/* Timeline */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}
.timeline::before {
    content: '';
    position: absolute;
    left: 11px;
    top: 0;
    height: 100%;
    width: 2px;
    background: var(--card-border);
}
.timeline-item {
    position: relative;
    padding-left: 3rem;
    margin-bottom: 3rem;
}
.timeline-item:last-child {
    margin-bottom: 0;
}
.timeline-dot {
    position: absolute;
    left: 0;
    top: 5px;
    width: 24px;
    height: 24px;
    background: var(--bg-color);
    border: 4px solid var(--accent);
    border-radius: 50%;
    z-index: 1;
}
.timeline-content h3 {
    font-size: 1.25rem;
    margin-bottom: 0.25rem;
}
.timeline-content .date {
    display: inline-block;
    font-size: 0.85rem;
    color: var(--accent);
    font-weight: 600;
    margin-bottom: 1rem;
}
.timeline-content p {
    color: var(--text-muted);
}

/* Certifications */
.certs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}
.cert-card {
    text-align: center;
}
.cert-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 1.5rem;
    background: var(--bg-alt);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}
.cert-card h3 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}
.cert-status {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--secondary-accent);
}

/* Contact */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}
.contact-info p {
    color: var(--text-muted);
    margin-bottom: 2rem;
    font-size: 1.1rem;
}
.social-links {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}
.social-link {
    color: var(--text-main);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s;
}
.social-link:hover {
    color: var(--accent);
}
.form-group {
    margin-bottom: 1.5rem;
}
.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    color: var(--text-main);
    font-family: inherit;
    font-size: 1rem;
    transition: border-color 0.3s;
}
.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: var(--nav-bg);
    backdrop-filter: blur(10px);
    z-index: 100;
    border-bottom: 1px solid var(--card-border);
    transition: all 0.3s ease;
}
.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}
.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    text-decoration: none;
    color: var(--text-main);
}
.navbar-brand span {
    color: var(--accent);
}
.navbar-nav {
    display: flex;
    list-style: none;
    gap: 2rem;
}
.nav-link {
    text-decoration: none;
    color: var(--text-muted);
    font-weight: 500;
    transition: color 0.3s;
}
.nav-link:hover {
    color: var(--accent);
}
.theme-toggle {
    background: none;
    border: none;
    color: var(--text-main);
    cursor: pointer;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem;
    border-radius: 5px;
    transition: background-color 0.3s ease;
}
.theme-toggle:hover {
    background-color: var(--bg-alt);
}

/* Footer */
.footer {
    text-align: center;
    padding: 3rem 0;
    background: var(--card-bg);
    border-top: 1px solid var(--card-border);
}
.footer p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Animations */
.animate-fade-in {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeIn 0.8s forwards;
}
.fade-up {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}
.fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}
.fade-delay-1 { animation-delay: 0.2s; }
.fade-delay-2 { animation-delay: 0.4s; }

@keyframes fadeIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive */
@media (max-width: 900px) {
    .navbar-nav {
        display: none; 
    }
    .hero-content {
        flex-direction: column-reverse;
        text-align: center;
        padding-top: 2rem;
    }
    .hero-text {
        max-width: 100%;
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    .hero-buttons {
        justify-content: center;
    }
    .hero-image {
        width: 100%;
        max-width: 300px;
    }
    h1 {
        font-size: 2.8rem;
    }
    .contact-grid {
        grid-template-columns: 1fr;
    }
}