:root {
    /* Colors - Brand & Neutrals */
    --color-bg-main: #0f172a;
    --color-bg-dark: #020617;
    --color-border: #1e293b;
    --color-accent-blue: #3b82f6;
    --color-accent-orange: #f97316;
    
    /* Scrollbar & UI Elements */
    --color-scroll-thumb: #334155;
    --color-scroll-hover: #475569;
    --color-glass-shine: rgba(255, 255, 255, 0.05);
    
    /* Gradient Sets */
    --gradient-hero: linear-gradient(-45deg, var(--color-bg-main), #1e3a5f, #1e40af, var(--color-bg-main));
    --gradient-profile: conic-gradient(from 0deg, var(--color-accent-blue), var(--color-accent-orange), var(--color-accent-blue), var(--color-accent-orange), var(--color-accent-blue));
    --gradient-timeline: linear-gradient(to bottom, var(--color-accent-blue), var(--color-accent-orange), var(--color-accent-blue));
    --gradient-glow: linear-gradient(135deg, var(--color-accent-blue), var(--color-accent-orange));

    /* Animation Timings */
    --transition-standard: 0.3s ease;
    --transition-smooth: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-reveal: 0.8s ease;
}

* {
    scroll-behavior: smooth;
}

body {
    background: var(--color-bg-main);
    min-width: 300px;
}

/* Scrollbar Styles */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg-main);
}

::-webkit-scrollbar-thumb {
    background: var(--color-scroll-thumb);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-scroll-hover);
}

/* Particles */
.particle {
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
    animation: float linear infinite;
    opacity: 0.15;
}

@keyframes float {
    0% {
        transform: translateY(0) rotate(0deg);
        opacity: 0;
    }
    10% { opacity: 0.15; }
    90% { opacity: 0.15; }
    100% {
        transform: translateY(-100vh) rotate(720deg);
        opacity: 0;
    }
}

/* Navigation */
.mobile-menu {
    transform: translateX(100%);
    transition: transform var(--transition-standard);
}

.mobile-menu.open {
    transform: translateX(0);
}

/* Hero Section */
.hero-gradient {
    background: var(--gradient-hero);
    background-size: 400% 400%;
    animation: gradientShift 12s ease infinite;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

/* Reveal Animation */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity var(--transition-reveal), transform var(--transition-reveal);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Decorative Elements */
.profile-ring {
    background: var(--gradient-profile);
    padding: 4px;
    border-radius: 50%;
}

.typing-cursor::after {
    content: '|';
    animation: blink 1s step-end infinite;
    color: var(--color-accent-orange);
    font-weight: 300;
}

@keyframes blink {
    50% { opacity: 0; }
}

.counter {
    display: inline-block;
}

/* Glass & Code Blocks */
.glass-device {
    position: relative;
    overflow: hidden;
}

.glass-device::after {
    content: '';
    position: absolute;
    top: 0;
    left: -150%;
    width: 50%;
    height: 100%;
    background: linear-gradient(to right, transparent, var(--color-glass-shine), transparent);
    transform: skewX(-25deg);
    animation: glassSweep 20s infinite ease-in-out;
}

@keyframes glassSweep {
    0%, 100%, 55% { left: -150%; }
    5%, 50% { left: 150%; }
}

.code-block {
    background: var(--color-bg-dark);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    box-shadow: 0 20px 50px -12px rgba(0, 0, 0, 0.5);
}

.code-header {
    background: var(--color-bg-main);
    padding: 12px 16px;
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    gap: 8px;
}

.code-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.capability-card {
    cursor: default;
    transition: all var(--transition-smooth);
}

.capability-card:hover {
    transform: translateY(-8px);
    border-color: var(--color-accent-orange);
}

.capability-card:hover .cap-icon {
    transform: scale(1.2) rotate(5deg);
}

.cap-icon {
    transition: transform var(--transition-smooth);
}

.skill-tag {
    transition: opacity var(--transition-standard), transform var(--transition-smooth), box-shadow var(--transition-standard);
    white-space: nowrap;
    height: 3em;
}

.skill-tag:hover {
    transform: translateY(-4px) scale(1.05);
    box-shadow: 0 8px 25px -5px rgba(59, 130, 246, 0.4);
}

.skill-tag.tag-hidden {
    opacity: 0;
    transform: scale(0.8);
    position: absolute;
    pointer-events: none;
}

.timeline-line {
    background: var(--gradient-timeline);
}

.card-glow {
    transition: all var(--transition-smooth);
    position: relative;
}

.card-glow::before {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: inherit;
    background: var(--gradient-glow);
    opacity: 0;
    transition: opacity var(--transition-smooth);
    z-index: -1;
}

.card-glow:hover::before {
    opacity: 0.2;
}

.card-glow:hover {
    transform: translateY(-4px);
}