:root {
    --bg-color: #050505;
    --card-bg: #0f1014;
    --text-primary: #e0e0e0;
    --text-secondary: #a0a0a0;
    --accent: #00f3ff; /* Cyan */
    --accent-glow: rgba(0, 243, 255, 0.4);
    --secondary-accent: #bd00ff; /* Purple */
    --purple-glow: rgba(189, 0, 255, 0.3);
    
    --font-main: 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 8rem;

    --container-width: 1200px;
}

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

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

/* Background Grid Effect */
.background-grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-size: 50px 50px;
    background-image: 
        linear-gradient(to right, rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    z-index: -1;
    pointer-events: none;
}

/* Typography & Utilities */
h1, h2, h3, h4 {
    color: #fff;
    line-height: 1.2;
}

a {
    text-decoration: none;
    color: inherit;
    transition: 0.3s;
}

ul {
    list-style: none;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.mono-label {
    font-family: var(--font-mono);
    color: var(--accent);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--spacing-sm);
    display: block;
}

.section-title {
    font-family: var(--font-mono);
    font-size: 2rem;
    color: #fff;
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
}

.section-title::after {
    content: '';
    flex: 1;
    height: 1px;
    background: rgba(255,255,255,0.1);
    margin-left: 20px;
    max-width: 300px;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 24px;
    font-family: var(--font-mono);
    border-radius: 4px;
    border: 1px solid transparent;
    cursor: pointer;
    font-size: 0.95rem;
}

.btn-primary {
    background: transparent;
    border-color: var(--accent);
    color: var(--accent);
    box-shadow: 0 0 10px rgba(0, 243, 255, 0.1);
}

.btn-primary:hover {
    background: rgba(0, 243, 255, 0.1);
    box-shadow: 0 0 20px var(--accent-glow);
    transform: translateY(-2px);
}

.btn-outline {
    border-color: var(--text-secondary);
    color: var(--text-primary);
}

.btn-outline:hover {
    border-color: #fff;
    background: rgba(255,255,255,0.05);
}

/* Header */
.header {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(5, 5, 5, 0.85);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 20px 0;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--accent);
}

.nav-list {
    display: flex;
    gap: 30px;
    align-items: center;
}

.nav-list a {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.nav-list a:hover {
    color: var(--accent);
}

/* Hero Section */
.hero {
    min-height: 90vh;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    padding-top: 120px;
    padding-bottom: 60px;
}

.hero-content {
    flex: 1;
    max-width: 700px;
}

.hero-image-wrapper {
    flex-shrink: 0;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image-frame {
    position: relative;
    width: 280px;
    height: 280px;
    border-radius: 50%;
    padding: 5px;
    background: linear-gradient(135deg, var(--accent), var(--secondary-accent));
    box-shadow: 0 0 30px var(--accent-glow), 0 0 50px var(--purple-glow);
    transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.hero-image-frame:hover {
    transform: scale(1.03) rotate(1deg);
    box-shadow: 0 0 40px var(--accent-glow), 0 0 60px var(--secondary-accent);
}

.profile-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
    display: block;
    border: 3px solid var(--bg-color);
}

.hero-title {
    font-size: clamp(2.5rem, 4.5vw, 4.2rem);
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(to right, #ffffff, #c0c0c0, var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 700;
}

.hero-sub {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    max-width: 700px;
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: 20px;
}

/* About Section */
.about {
    padding: var(--spacing-xl) 0;
}

.about-grid {
    display: grid;
    grid-template-columns: 3fr 2fr;
    gap: 50px;
    align-items: start;
}

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

.about-text strong {
    color: var(--accent);
}

.about-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.stat-card {
    background: var(--card-bg);
    padding: 24px 18px;
    border: 1px solid rgba(255,255,255,0.05);
    border-radius: 8px;
    text-align: center;
    transition: 0.3s;
}

.stat-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent);
    box-shadow: 0 5px 20px rgba(0, 243, 255, 0.08);
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent);
    font-family: var(--font-mono);
    margin-bottom: 6px;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Solutions Section */
.solutions {
    padding: var(--spacing-xl) 0;
}

.section-sub {
    color: var(--text-secondary);
    margin-bottom: 40px;
    margin-top: -30px;
    font-size: 1.05rem;
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.solution-card {
    background: var(--card-bg);
    padding: 30px;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.07);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

.solution-card:hover {
    transform: translateY(-6px);
    border-color: rgba(0, 243, 255, 0.3);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.highlight-card {
    border-color: rgba(189, 0, 255, 0.3);
    background: linear-gradient(145deg, #11111a, #0d0e14);
    position: relative;
}

.highlight-card::before {
    content: 'RECOMMENDED SOLUTION';
    position: absolute;
    top: 14px;
    right: 18px;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--secondary-accent);
    background: rgba(189, 0, 255, 0.1);
    padding: 3px 8px;
    border-radius: 4px;
    border: 1px solid rgba(189, 0, 255, 0.25);
}

.highlight-card:hover {
    border-color: var(--secondary-accent);
    box-shadow: 0 10px 35px var(--purple-glow);
}

.card-icon {
    font-size: 2.2rem;
    margin-bottom: 16px;
}

.solution-card h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
    color: #ffffff;
}

.solution-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 20px;
    line-height: 1.6;
}

.solution-highlights {
    margin-top: auto;
    padding-top: 15px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.solution-highlights li {
    font-size: 0.85rem;
    color: var(--text-primary);
    margin-bottom: 8px;
    position: relative;
    padding-left: 18px;
}

.solution-highlights li::before {
    content: '▹';
    position: absolute;
    left: 0;
    color: var(--accent);
}

.highlight-card .solution-highlights li::before {
    color: var(--secondary-accent);
}

/* Tech Stack */
.stack {
    padding: var(--spacing-xl) 0;
}

.stack-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.stack-category {
    background: var(--card-bg);
    padding: 25px;
    border-radius: 8px;
    border: 1px solid rgba(255,255,255,0.05);
}

.stack-category h3 {
    margin-bottom: 20px;
    font-size: 1.2rem;
    color: #fff;
}

.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tag {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--accent);
    background: rgba(0, 243, 255, 0.05);
    padding: 5px 10px;
    border-radius: 4px;
    border: 1px solid rgba(0, 243, 255, 0.1);
}

.accent-tag {
    color: #e28cff;
    background: rgba(189, 0, 255, 0.1);
    border-color: rgba(189, 0, 255, 0.3);
}

/* YouTube */
.youtube {
    padding: var(--spacing-xl) 0;
}

.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.video-card {
    background: var(--card-bg);
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid rgba(255,255,255,0.05);
    transition: 0.3s;
    cursor: pointer;
    display: block;
    text-decoration: none;
}

.video-card:hover {
    transform: translateY(-5px);
    border-color: var(--secondary-accent);
}

.video-thumbnail {
    height: 180px;
    background: #1a1b20;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background: linear-gradient(45deg, #111, #222);
}

.play-icon {
    font-size: 3rem;
    color: rgba(255,255,255,0.8);
    transition: 0.3s;
}

.video-card:hover .play-icon {
    transform: scale(1.1);
    color: var(--secondary-accent);
}

.video-info {
    padding: 20px;
}

.video-info h4 {
    margin-bottom: 10px;
    font-size: 1.1rem;
}

.video-info p {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

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

/* Contact */
.contact {
    padding: var(--spacing-xl) 0;
    text-align: center;
    max-width: 700px;
}

.big-btn {
    padding: 15px 40px;
    font-size: 1.1rem;
    margin-top: 30px;
}

/* Footer */
.footer {
    text-align: center;
    padding: 40px 0;
    color: var(--text-secondary);
    font-size: 0.9rem;
    border-top: 1px solid rgba(255,255,255,0.05);
    font-family: var(--font-mono);
}

@media (max-width: 992px) {
    .hero {
        flex-direction: column-reverse;
        justify-content: center;
        text-align: center;
        min-height: auto;
        padding-top: 130px;
    }

    .hero-sub {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-actions {
        justify-content: center;
    }

    .hero-image-frame {
        width: 220px;
        height: 220px;
        margin-bottom: 20px;
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.3rem;
    }
    
    .nav-list {
        display: none;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
    }

    .about-stats {
        grid-template-columns: 1fr 1fr;
    }
}