:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --text-primary: #e8e8e8;
    --text-secondary: #a0a0a8;
    --accent: rgb(230, 40, 40);
    --accent-rgb: 0, 255, 136;
    --accent-secondary: #00d4ff;
    --glass-bg: rgba(18, 18, 26, 0.4);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-shadow: rgba(0, 0, 0, 0.3);
    --glow-color: rgba(100, 100, 150, 0.15);
    --font-main: 'SF Mono', 'Monaco', 'Inconsolata', 'Fira Code', monospace;
    --font-display: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif
}

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

html {
    scroll-behavior: smooth
}

body {
    font-family: var(--font-main);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background .3s ease, color .3s ease
}

.returnBtn {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 10px 15px;
    margin: 5vh 30vw;
    background-color: var(--accent);
    color: var(--text-primary);
    text-decoration: none;
    border-radius: 5px;
    transition: background-color .3s ease, color .3s ease;
    z-index: 1000;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 3rem
}

.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    box-shadow: 0 8px 32px var(--glass-shadow);
    transition: all .4s cubic-bezier(.4, 0, .2, 1)
}

.section {
    padding: 8rem 0;
    position: relative
}

.section-title {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 4rem;
    font-size: 2.5rem;
    color: var(--text-primary)
}

.title-number {
    font-size: 1.5rem;
    color: var(--accent);
    font-family: var(--font-main)
}

.title-text {
    font-family: var(--font-display);
    font-weight: 700
}

.title-line {
    flex: 1;
    height: 1px;
    background: linear-gradient(to right, var(--glass-border), transparent)
}

.projects-grid {
    display: grid;
    gap: 2.5rem
}

.project-card {
    padding: 3rem;
    border-radius: 30px;
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 2rem;
    align-items: start;
    position: relative;
    overflow: hidden;
    transition: all .4s ease
}

.project-card:hover {
    transform: translateX(15px);
    box-shadow: 0 15px 60px var(--glow-color)
}

.project-number {
    font-size: 4rem;
    font-weight: 900;
    color: var(--accent);
    opacity: .15;
    font-family: var(--font-display);
    transition: opacity .3s ease
}

.project-card:hover .project-number {
    opacity: .3
}

.project-content h3 {
    font-size: 1.8rem;
    color: var(--text-primary);
    margin-bottom: 1rem;
    font-family: var(--font-display)
}

.project-content p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 1.5rem
}

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

.tag {
    padding: .5rem 1rem;
    background: var(--bg-secondary);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    font-size: .85rem;
    color: var(--text-secondary);
    transition: all .3s ease
}

.tag:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-2px)
}

.project-links {
    display: flex;
    align-items: center
}

.project-link {
    display: flex;
    align-items: center;
    gap: .5rem;
    padding: 1rem 1.5rem;
    text-decoration: none;
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
    border-radius: 50px;
    transition: all .3s ease;
    background: var(--glass-bg);
    backdrop-filter: blur(10px)
}

.project-link:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-3px);
    box-shadow: 0 5px 25px var(--glow-color)
}

.project-link-no {
    display: flex;
    align-items: center;
    gap: .5rem;
    padding: 1rem 1.5rem;
    text-decoration: none;
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
    border-radius: 50px;
    transition: all .3s ease;
    background: var(--glass-bg);
    backdrop-filter: blur(10px)
}

.project-link-no:hover {
    border-color: red;
    color: red;
    transform: translateY(-3px);
    box-shadow: 0 5px 25px var(--glow-color)
}

.project-glow {
    position: absolute;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, var(--glow-color) 0, transparent 70%);
    border-radius: 50%;
    top: 50%;
    right: -150px;
    transform: translateY(-50%);
    pointer-events: none;
    opacity: .5;
    transition: all .3s ease
}

.project-card:hover .project-glow {
    right: -100px;
    opacity: .8
}

.footer {
    margin-top: 8rem;
    padding: 2rem;
    border-radius: 30px 30px 0 0;
    text-align: center
}

.footer-content p {
    color: var(--text-secondary);
    margin: .5rem 0
}

.footer-tagline {
    font-size: .9rem;
    opacity: .7
}

@media (max-width:1024px) {
    .container {
        padding: 0 2rem
    }

    .project-card {
        grid-template-columns: 1fr;
        grid-template-rows: auto auto auto
    }

    .project-number {
        font-size: 3rem
    }
}

@media (max-width:768px) {
    .section {
        padding: 4rem 0
    }

    .section-title {
        font-size: 2rem
    }

    .project-card {
        padding: 2rem
    }
}

@media (max-width:480px) {
    .container {
        padding: 0 1rem
    }
}

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

::-webkit-scrollbar {
    width: 10px
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary)
}

::-webkit-scrollbar-thumb {
    background: var(--accent);
    border-radius: 10px
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-secondary)
}

::selection {
    background: rgba(var(--accent-rgb), .3);
    color: var(--text-primary)
}