/* CSS Custom Properties */
:root {
    --color-black: #000000;
    --color-dark: #0a0a0a;
    --color-dark-2: #121212;
    --color-dark-3: #1a1a1a;
    --color-gray: #2a2a2a;
    --color-gray-light: #3a3a3a;
    --color-gray-lighter: #4a4a4a;
    --color-white: #ffffff;
    --color-white-dim: #f5f5f5;
    
    --color-violet: #8b5cf6;
    --color-violet-light: #a78bfa;
    --color-violet-dark: #7c3aed;
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 24px 64px rgba(0, 0, 0, 0.6);
    --shadow-violet: 0 0 30px rgba(139, 92, 246, 0.3);
    --shadow-violet-glow: 0 0 20px rgba(139, 92, 246, 0.4), 0 0 40px rgba(139, 92, 246, 0.2);
    
    --transition-fast: 0.2s ease-out;
    --transition-normal: 0.3s ease-out;
    --transition-slow: 0.5s ease-out;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    background-color: var(--color-black);
    color: var(--color-white-dim);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(10, 10, 10, 0.7);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(139, 92, 246, 0.1);
    z-index: 100;
    box-shadow: var(--shadow-md);
}

.navbar-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: 0.1em;
    color: var(--color-white);
}

.brand-logo {
    height: 40px;
    width: auto;
    object-fit: contain;
    transition: transform var(--transition-fast);
}

.navbar-brand:hover .brand-logo {
    transform: scale(1.05);
}

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
}

.nav-links a {
    color: var(--color-white-dim);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    position: relative;
    transition: color var(--transition-fast);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-violet), var(--color-violet-light));
    transition: width var(--transition-fast);
}

.nav-links a:hover {
    color: var(--color-violet-light);
}

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

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 4rem 2rem;
    background: linear-gradient(135deg, var(--color-black) 0%, var(--color-dark-2) 50%, var(--color-black) 100%);
    overflow: hidden;
    margin-top: 60px;
}

.hero-background {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    background: url('herobg.jpg') center/cover no-repeat;
    background-attachment: fixed;
    filter: blur(3px);
}

.hero-background::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at center, rgba(0, 0, 0, 0.3) 0%, rgba(0, 0, 0, 0.5) 50%, rgba(0, 0, 0, 0.7) 100%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    text-align: center;
    animation: fadeInUp 1s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-accent {
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--color-violet), var(--color-violet-light));
    margin: 0 auto 1.5rem;
    border-radius: 2px;
    box-shadow: var(--shadow-violet);
}

.hero-title {
    font-size: 4.5rem;
    font-weight: 900;
    letter-spacing: 0.08em;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--color-white) 0%, var(--color-violet-light) 50%, var(--color-white) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.1;
    text-shadow: 0 0 30px rgba(139, 92, 246, 0.2);
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 300;
    color: var(--color-violet-light);
    margin-bottom: 1rem;
    letter-spacing: 0.05em;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--color-white-dim);
    margin-bottom: 2.5rem;
    line-height: 1.8;
    opacity: 0.9;
}

.hero-cta {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

.cta-button {
    padding: 1rem 2.5rem;
    background: linear-gradient(135deg, var(--color-violet) 0%, var(--color-violet-dark) 100%);
    color: var(--color-white);
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-lg), var(--shadow-violet);
    position: relative;
    overflow: hidden;
}

.cta-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.cta-button:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl), var(--shadow-violet-glow);
}

.cta-button:hover::before {
    left: 100%;
}

/* Sections */
.section {
    padding: 6rem 2rem;
    background-color: var(--color-black);
    position: relative;
}

.section-dark {
    background: linear-gradient(135deg, var(--color-dark-2) 0%, var(--color-dark) 100%);
    border-top: 1px solid rgba(139, 92, 246, 0.1);
    border-bottom: 1px solid rgba(139, 92, 246, 0.1);
}

.section-container {
    max-width: 1200px;
    margin: 0 auto;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    letter-spacing: 0.03em;
    background: linear-gradient(135deg, var(--color-white) 0%, var(--color-violet-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--color-white-dim);
    margin-bottom: 3rem;
    opacity: 0.8;
    font-weight: 300;
}

/* Projects Grid */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.project-card {
    background: linear-gradient(135deg, var(--color-dark-2) 0%, var(--color-dark-3) 100%);
    border: 1px solid rgba(139, 92, 246, 0.2);
    border-radius: 12px;
    padding: 2.5rem 2rem;
    position: relative;
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-md);
    display: flex;
    flex-direction: column;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(139, 92, 246, 0.1), transparent);
    transition: left 0.6s ease-out;
}

.project-card:hover {
    border-color: var(--color-violet-light);
    box-shadow: var(--shadow-lg), var(--shadow-violet-glow);
    transform: translateY(-8px);
    background: linear-gradient(135deg, var(--color-dark-3) 0%, var(--color-dark-2) 100%);
}

.project-card:hover::before {
    left: 100%;
}

.card-inner {
    position: relative;
    z-index: 2;
}

.card-icon {
    margin-bottom: 1rem;
    display: inline-block;
}

.icon-large {
    width: 48px;
    height: 48px;
    color: var(--color-violet-light);
    transition: transform var(--transition-normal);
}

.project-card:hover .icon-large {
    transform: scale(1.1);
}

.tool-card:hover .icon-large {
    color: var(--color-white);
    transform: scale(1.1);
}

.icon-small {
    width: 16px;
    height: 16px;
    color: var(--color-violet-light);
    transition: all var(--transition-fast);
}

.project-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--color-white);
    font-weight: 700;
}

.project-card p {
    font-size: 0.95rem;
    color: var(--color-white-dim);
    margin-bottom: 1.5rem;
    flex-grow: 1;
    line-height: 1.6;
}

.card-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-violet-light);
    font-weight: 600;
    font-size: 0.95rem;
    transition: gap var(--transition-fast);
}

.project-card:hover .card-link {
    gap: 0.75rem;
    color: var(--color-white);
}

.project-card:hover .card-link .icon-small {
    color: var(--color-white);
    transform: translateX(2px) translateY(-2px);
}

.project-placeholder {
    cursor: default;
    opacity: 0.7;
}

.project-placeholder:hover {
    transform: none;
    border-color: rgba(139, 92, 246, 0.2);
    box-shadow: var(--shadow-md);
    background: linear-gradient(135deg, var(--color-dark-2) 0%, var(--color-dark-3) 100%);
}

.placeholder-badge {
    display: inline-block;
    padding: 0.4rem 0.8rem;
    background: linear-gradient(135deg, var(--color-gray-lighter) 0%, var(--color-gray) 100%);
    color: var(--color-white-dim);
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    margin-top: 0.75rem;
    text-transform: uppercase;
}

/* Tools Grid */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
}

.tool-card {
    position: relative;
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.05) 0%, rgba(123, 58, 237, 0.02) 100%);
    border: 1px solid rgba(139, 92, 246, 0.15);
    border-radius: 12px;
    padding: 2rem 1.5rem;
    text-decoration: none;
    color: inherit;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.card-gradient-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(139, 92, 246, 0) 0%, rgba(139, 92, 246, 0.05) 100%);
    pointer-events: none;
}

.tool-card:hover {
    border-color: var(--color-violet);
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.1) 0%, rgba(123, 58, 237, 0.05) 100%);
    box-shadow: var(--shadow-lg), var(--shadow-violet);
    transform: translateY(-6px);
}

.card-content {
    position: relative;
    z-index: 2;
}

.tool-icon {
    font-size: 2.5rem;
    margin-bottom: 0.75rem;
    display: block;
}

.tool-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--color-white);
}

.tool-description {
    font-size: 0.9rem;
    color: var(--color-white-dim);
    margin-bottom: 1rem;
    line-height: 1.5;
}

.tool-badge {
    display: inline-block;
    padding: 0.4rem 0.8rem;
    background: linear-gradient(135deg, var(--color-violet) 0%, var(--color-violet-dark) 100%);
    color: var(--color-white);
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    box-shadow: var(--shadow-sm), var(--shadow-violet);
}

.tool-badge.coming {
    background: linear-gradient(135deg, var(--color-gray-lighter) 0%, var(--color-gray) 100%);
    box-shadow: var(--shadow-sm);
}

/* About Section */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 3rem;
    align-items: center;
    margin-top: 2rem;
}

.about-photo-container {
    position: relative;
    aspect-ratio: 3/4;
}

.about-photo {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 12px;
    box-shadow: var(--shadow-lg), var(--shadow-violet);
    border: 1px solid rgba(139, 92, 246, 0.2);
    transition: all var(--transition-normal);
}

.about-photo-overlay {
    position: absolute;
    inset: 0;
    border-radius: 12px;
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.about-photo-container:hover .about-photo {
    box-shadow: var(--shadow-xl), var(--shadow-violet-glow);
    transform: scale(1.02);
}

.about-text-content {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.about-intro {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--color-white);
    font-weight: 500;
}

.education-section {
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.05) 0%, rgba(123, 58, 237, 0.02) 100%);
    border: 1px solid rgba(139, 92, 246, 0.15);
    border-radius: 8px;
    padding: 1.5rem;
}

.education-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-violet-light);
    margin-bottom: 1rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.education-items {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.education-item {
    padding-bottom: 1rem;
}

.education-item:not(:last-child) {
    border-bottom: 1px solid rgba(139, 92, 246, 0.1);
}

.education-degree {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: 0.25rem;
}

.education-university {
    font-size: 0.9rem;
    color: var(--color-violet-light);
    margin-bottom: 0.25rem;
}

.education-note {
    font-size: 0.8rem;
    color: var(--color-white-dim);
    font-style: italic;
}

.about-philosophy {
    font-size: 0.95rem;
    line-height: 1.7;
    color: var(--color-white-dim);
}

.about-closing {
    font-size: 0.95rem;
    line-height: 1.7;
    color: var(--color-white-dim);
}

/* Contact Section */
.contact-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.contact-item {
    text-align: center;
    padding: 2rem;
    background: rgba(139, 92, 246, 0.05);
    border: 1px solid rgba(139, 92, 246, 0.15);
    border-radius: 8px;
    transition: all var(--transition-normal);
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact-item:hover {
    background: rgba(139, 92, 246, 0.1);
    border-color: var(--color-violet);
    box-shadow: var(--shadow-violet);
}

.contact-icon-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 48px;
    height: 48px;
    margin: 0 auto;
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.15) 0%, rgba(123, 58, 237, 0.1) 100%);
    border: 1px solid rgba(139, 92, 246, 0.2);
    border-radius: 8px;
    transition: all var(--transition-fast);
}

.contact-item:hover .contact-icon-wrapper {
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.25) 0%, rgba(123, 58, 237, 0.15) 100%);
    border-color: var(--color-violet);
    box-shadow: var(--shadow-violet);
}

.contact-icon {
    width: 24px;
    height: 24px;
    color: var(--color-violet-light);
    transition: all var(--transition-fast);
}

.contact-item:hover .contact-icon {
    color: var(--color-white);
    transform: scale(1.1);
}

.contact-label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-violet-light);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.contact-link {
    color: var(--color-white);
    text-decoration: none;
    font-size: 1rem;
    font-weight: 600;
    transition: color var(--transition-fast);
    word-break: break-all;
}

.contact-link:hover {
    color: var(--color-violet-light);
}

/* Footer */
.footer {
    background: var(--color-dark);
    border-top: 1px solid rgba(139, 92, 246, 0.1);
    padding: 2rem;
    text-align: center;
    color: var(--color-white-dim);
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
}

.footer p {
    margin: 0.5rem 0;
    font-size: 0.95rem;
}

.footer-tagline {
    color: var(--color-violet-light);
    font-weight: 500;
}

/* Responsive Design */
@media (max-width: 768px) {
    .navbar-container {
        padding: 1rem 1.5rem;
    }

    .nav-links {
        gap: 1rem;
        font-size: 0.85rem;
    }

    .hero {
        padding: 2rem 1.5rem;
        margin-top: 70px;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .hero-description {
        font-size: 0.95rem;
    }

    .section {
        padding: 4rem 1.5rem;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .section-subtitle {
        font-size: 1rem;
        margin-bottom: 2rem;
    }

    .projects-grid {
        gap: 1.5rem;
    }

    .project-card {
        padding: 1.75rem 1.5rem;
    }

    .tools-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }

    .tool-icon {
        font-size: 2rem;
    }

    .tool-title {
        font-size: 1.1rem;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .about-photo-container {
        max-width: 300px;
        margin: 0 auto;
    }
}

@media (max-width: 480px) {
    .navbar-brand {
        font-size: 1.2rem;
    }

    .nav-links {
        display: none;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 0.95rem;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .projects-grid,
    .tools-grid {
        grid-template-columns: 1fr;
    }

    .cta-button {
        padding: 0.85rem 2rem;
        font-size: 0.9rem;
    }
}

/* Scroll Animations */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    animation: reveal-animation 0.8s ease-out forwards;
}

@keyframes reveal-animation {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}