/* ==========================================================================
   LOCAL FONTS FALLBACK
   ========================================================================== */
@font-face {
    font-family: 'Inter';
    src: url('../fonts/Inter-VariableFont_opsz,wght.ttf') format('truetype-variations'),
         url('../fonts/Inter-VariableFont_opsz,wght.ttf') format('truetype');
    font-weight: 100 900;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Inter';
    src: url('../fonts/Inter-Italic-VariableFont_opsz,wght.ttf') format('truetype-variations'),
         url('../fonts/Inter-Italic-VariableFont_opsz,wght.ttf') format('truetype');
    font-weight: 100 900;
    font-style: italic;
    font-display: swap;
}

/* ==========================================================================
   DESIGN SYSTEM & VARIABLES
   ========================================================================== */
:root {
    /* Colors */
    --bg-dark: #070a13;
    --bg-darker: #04060d;
    --bg-card: rgba(13, 20, 38, 0.5);
    --bg-card-hover: rgba(20, 30, 56, 0.7);
    --border-color: rgba(255, 255, 255, 0.06);
    --border-glow: rgba(0, 242, 254, 0.15);
    
    /* Neon Accents */
    --accent-cyan: #00f2fe;
    --accent-purple: #a955ff;
    --accent-blue: #4facfe;
    --accent-green: #00ff87;
    --accent-red: #ff3366;
    
    /* Text Colors */
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    /* Fonts */
    --font-main: 'Inter', sans-serif;
    --font-tech: 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    /* Layout */
    --header-height: 80px;
    --border-radius: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Shadow Glows */
    --glow-cyan: 0 0 15px rgba(0, 242, 254, 0.3);
    --glow-purple: 0 0 15px rgba(169, 85, 255, 0.3);
    --glow-green: 0 0 15px rgba(0, 255, 135, 0.3);
    --glow-red: 0 0 15px rgba(255, 51, 102, 0.3);
}

/* ==========================================================================
   RESET & BASE STYLES
   ========================================================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-height);
}

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

#tech-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -2;
    pointer-events: none;
}

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

button, input, select, textarea {
    font-family: inherit;
    background: none;
    border: none;
    outline: none;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-darker);
}
::-webkit-scrollbar-thumb {
    background: rgba(169, 85, 255, 0.3);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 242, 254, 0.5);
}

/* ==========================================================================
   HEADER / NAVBAR
   ========================================================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background: rgba(7, 10, 19, 0.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    height: 70px;
    background: rgba(4, 6, 13, 0.9);
    border-bottom: 1px solid rgba(0, 242, 254, 0.2);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
}

.nav-container {
    max-width: 1200px;
    height: 100%;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-tech);
    font-weight: 700;
    font-size: 1.4rem;
    color: var(--text-primary);
    letter-spacing: 1px;
}

.logo-accent {
    color: var(--accent-cyan);
    font-weight: 900;
}

.menu-toggle {
    display: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
}

.nav-menu {
    display: flex;
    gap: 32px;
}

.nav-link {
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--text-secondary);
    transition: var(--transition);
    position: relative;
    padding: 6px 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple));
    transition: var(--transition);
}

.nav-link:hover, .nav-link.active {
    color: var(--text-primary);
    text-shadow: 0 0 8px rgba(0, 242, 254, 0.4);
}

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

/* ==========================================================================
   BUTTONS
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 12px 28px;
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
    color: var(--bg-darker);
    box-shadow: var(--glow-cyan);
    border: 1px solid transparent;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 25px rgba(0, 242, 254, 0.6);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    backdrop-filter: blur(5px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--accent-purple);
    box-shadow: var(--glow-purple);
    transform: translateY(-2px);
}

/* ==========================================================================
   SECTIONS GENERAL
   ========================================================================== */
section {
    padding: 100px 0;
    position: relative;
}

.section-header {
    margin-bottom: 50px;
    position: relative;
}

.section-tag {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--accent-cyan);
    letter-spacing: 2px;
    display: block;
    margin-bottom: 8px;
    text-shadow: 0 0 10px rgba(0, 242, 254, 0.2);
}

.section-title {
    font-family: var(--font-tech);
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--text-primary);
}

.header-line {
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple));
    margin-top: 12px;
    border-radius: 2px;
    box-shadow: var(--glow-cyan);
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero-section {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding-top: var(--header-height);
    padding-left: 10%;
    padding-right: 10%;
    gap: 40px;
    background: radial-gradient(circle at 50% 50%, rgba(13, 20, 38, 0.6) 0%, transparent 60%);
}

.hero-content {
    max-width: 800px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.cyber-badge {
    display: inline-block;
    padding: 6px 12px;
    background: rgba(0, 242, 254, 0.08);
    border: 1px solid rgba(0, 242, 254, 0.2);
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--accent-cyan);
    letter-spacing: 1px;
    margin-bottom: 24px;
    box-shadow: inset 0 0 5px rgba(0, 242, 254, 0.1);
}

.hero-title {
    font-family: var(--font-tech);
    font-size: 3rem;
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 16px;
}

.hero-title .highlight {
    background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 0 30px rgba(0, 242, 254, 0.1);
}

.hero-subtitle {
    font-family: var(--font-mono);
    font-size: 1.4rem;
    font-weight: 400;
    color: var(--accent-purple);
    margin-bottom: 24px;
    min-height: 40px;
}

.hero-subtitle .cursor {
    animation: blink 0.8s infinite alternate;
}

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

.hero-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.hero-actions {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    justify-content: center;
}

.scroll-down {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 1.5rem;
    color: var(--text-secondary);
    animation: bounce 2s infinite;
    cursor: pointer;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0) translateX(-50%); }
    40% { transform: translateY(-10px) translateX(-50%); }
    60% { transform: translateY(-5px) translateX(-50%); }
}

/* ==========================================================================
   ABOUT & INTERESTS SECTION
   ========================================================================== */
.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 48px;
    align-items: start;
}

.about-text-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 36px;
    backdrop-filter: blur(10px);
    box-shadow: inset 0 0 15px rgba(255, 255, 255, 0.02);
}

.about-text-card h3 {
    font-family: var(--font-tech);
    font-size: 1.5rem;
    color: var(--accent-cyan);
    margin-bottom: 20px;
    border-left: 3px solid var(--accent-cyan);
    padding-left: 12px;
}

.bio-text {
    color: var(--text-secondary);
    font-size: 1.05rem;
    margin-bottom: 20px;
}

.interests-container h4 {
    font-family: var(--font-tech);
    font-size: 1.1rem;
    margin: 32px 0 16px 0;
    color: var(--text-primary);
}

.interests-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.interest-tag {
    padding: 8px 16px;
    background: rgba(169, 85, 255, 0.05);
    border: 1px solid rgba(169, 85, 255, 0.15);
    border-radius: 30px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.interest-tag i {
    color: var(--accent-purple);
}

.interest-tag:hover {
    background: rgba(169, 85, 255, 0.15);
    border-color: var(--accent-purple);
    box-shadow: 0 0 10px rgba(169, 85, 255, 0.3);
    transform: translateY(-2px);
}

.skills-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 36px;
    backdrop-filter: blur(10px);
    height: 100%;
}

.skills-card h3 {
    font-family: var(--font-tech);
    font-size: 1.5rem;
    color: var(--accent-purple);
    margin-bottom: 24px;
    border-left: 3px solid var(--accent-purple);
    padding-left: 12px;
}

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

.skill-item {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.skill-info {
    display: flex;
    justify-content: space-between;
    font-size: 0.95rem;
    font-weight: 600;
}

.skill-info i {
    margin-right: 6px;
    color: var(--accent-cyan);
}

.skill-bar {
    height: 6px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 3px;
    overflow: hidden;
    position: relative;
}

.skill-progress {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple));
    border-radius: 3px;
    transition: width 1.5s cubic-bezier(0.1, 0.8, 0.2, 1);
    position: relative;
    box-shadow: 0 0 8px var(--accent-cyan);
}

/* ==========================================================================
   PORTFOLIO PROJECTS SECTION
   ========================================================================== */
.projects-filters {
    display: flex;
    gap: 12px;
    margin-bottom: 36px;
    flex-wrap: wrap;
}

.proj-filter-btn {
    padding: 8px 20px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: 30px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.proj-filter-btn:hover, .proj-filter-btn.active {
    background: rgba(169, 85, 255, 0.08);
    border-color: var(--accent-purple);
    color: var(--text-primary);
    box-shadow: 0 0 10px rgba(169, 85, 255, 0.2);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 30px;
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    overflow: hidden;
    backdrop-filter: blur(10px);
    display: flex;
    flex-direction: column;
    transition: var(--transition);
}

.project-card:hover {
    transform: translateY(-8px);
    border-color: rgba(0, 242, 254, 0.3);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5), 0 0 20px rgba(0, 242, 254, 0.1);
}

.project-image {
    height: 180px;
    background: linear-gradient(135deg, rgba(7, 10, 19, 0.9), rgba(15, 22, 42, 0.9));
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    border-bottom: 1px solid var(--border-color);
    overflow: hidden;
}

/* Blueprint grid visual */
.project-image::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(0, 242, 254, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 242, 254, 0.03) 1px, transparent 1px);
    background-size: 20px 20px;
}

.project-screenshot {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top;
    transition: var(--transition);
    z-index: 1;
}

.project-card:hover .project-screenshot {
    transform: scale(1.05);
}

.cyber-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, transparent, rgba(0, 242, 254, 0.05));
    opacity: 0.5;
    transition: var(--transition);
    z-index: 2;
}

.project-card:hover .cyber-overlay {
    opacity: 1;
    background: linear-gradient(180deg, transparent, rgba(0, 242, 254, 0.15));
}

.project-icon-fallback {
    font-size: 3.5rem;
    color: rgba(255, 255, 255, 0.15);
    transition: var(--transition);
    z-index: 1;
}

.project-card:hover .project-icon-fallback {
    color: var(--accent-cyan);
    transform: scale(1.1);
    filter: drop-shadow(0 0 10px rgba(0, 242, 254, 0.5));
}

.project-category {
    position: absolute;
    top: 16px;
    right: 16px;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    background: rgba(4, 6, 13, 0.8);
    border: 1px solid var(--border-color);
    padding: 4px 8px;
    border-radius: 4px;
    color: var(--text-secondary);
    z-index: 3;
}

.project-info {
    padding: 24px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.project-title {
    font-family: var(--font-tech);
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.project-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.5;
    margin-bottom: 20px;
    flex-grow: 1;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 24px;
}

.project-tags span {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    padding: 4px 10px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-secondary);
}

.project-card:hover .project-tags span {
    border-color: rgba(0, 242, 254, 0.15);
    color: var(--text-primary);
}

.project-links {
    display: flex;
    gap: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 16px;
}

.proj-link {
    font-size: 0.9rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--text-secondary);
    transition: var(--transition);
}

.proj-link:hover {
    color: var(--accent-cyan);
    text-shadow: 0 0 8px rgba(0, 242, 254, 0.4);
}

/* ==========================================================================
   CONTACT SECTION
   ========================================================================== */
.contact-section {
    background: radial-gradient(circle at 10% 90%, rgba(0, 242, 254, 0.05) 0%, transparent 60%);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 48px;
}

.contact-info-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 40px;
    backdrop-filter: blur(10px);
}

.contact-info-card h3 {
    font-family: var(--font-tech);
    font-size: 1.6rem;
    margin-bottom: 16px;
    color: var(--accent-cyan);
}

.contact-info-card p {
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 24px;
    margin-bottom: 40px;
}

.contact-detail-item {
    display: flex;
    align-items: center;
    gap: 20px;
}

.contact-detail-item i {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: rgba(0, 242, 254, 0.06);
    border: 1px solid rgba(0, 242, 254, 0.2);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.2rem;
    color: var(--accent-cyan);
}

.contact-detail-item div {
    display: flex;
    flex-direction: column;
}

.contact-detail-item span {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
}

.contact-detail-item a, .contact-detail-item strong {
    font-size: 1.05rem;
    transition: var(--transition);
}

.contact-detail-item a:hover {
    color: var(--accent-cyan);
}

.social-links-footer {
    display: flex;
    gap: 16px;
}

.social-links-footer a {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.1rem;
    color: var(--text-secondary);
    transition: var(--transition);
}

.social-links-footer a:hover {
    color: var(--bg-darker);
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
    border-color: transparent;
    transform: translateY(-3px);
    box-shadow: 0 0 15px rgba(0, 242, 254, 0.4);
}

.contact-form-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 40px;
    backdrop-filter: blur(10px);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 20px;
}

.form-group label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 600;
}

.form-group input, .form-group textarea {
    background: rgba(4, 6, 13, 0.6);
    border: 1px solid var(--border-color);
    padding: 14px;
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 0.95rem;
    transition: var(--transition);
    width: 100%;
}

.form-group textarea {
    resize: none;
}

.form-group input:focus, .form-group textarea:focus {
    border-color: var(--accent-cyan);
    box-shadow: var(--glow-cyan);
}

.btn-submit {
    width: 100%;
    padding: 14px;
}

.form-feedback-msg {
    margin-top: 16px;
    padding: 12px;
    border-radius: 6px;
    font-size: 0.9rem;
    text-align: center;
    font-family: var(--font-mono);
}

.form-feedback-msg.success {
    background: rgba(0, 255, 135, 0.1);
    border: 1px solid rgba(0, 255, 135, 0.3);
    color: var(--accent-green);
}

.form-feedback-msg.error {
    background: rgba(255, 51, 102, 0.1);
    border: 1px solid rgba(255, 51, 102, 0.3);
    color: var(--accent-red);
}

.hidden {
    display: none;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.footer {
    border-top: 1px solid var(--border-color);
    padding: 40px 0;
    background: var(--bg-darker);
    text-align: center;
}

.footer p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 8px;
}

.footer-tech-tag {
    font-family: var(--font-mono);
    font-size: 0.75rem !important;
    color: rgba(169, 85, 255, 0.4) !important;
}

/* ==========================================================================
   RESPONSIVE DESIGN (MEDIA QUERIES)
   ========================================================================== */
@media (max-width: 1024px) {
    .about-grid, .contact-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
}

@media (max-width: 768px) {
    .section-title {
        font-size: 1.8rem;
    }
    
    .hero-title {
        font-size: 2.2rem;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .nav-menu {
        position: fixed;
        top: var(--header-height);
        left: -100%;
        width: 100%;
        height: calc(100vh - var(--header-height));
        background: rgba(7, 10, 19, 0.95);
        backdrop-filter: blur(20px);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 40px;
        transition: var(--transition);
        z-index: 999;
        border-top: 1px solid var(--border-color);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-link {
        font-size: 1.2rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.8rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .btn {
        width: 100%;
    }
}