/* ==========================================================================
   DESIGN SYSTEM & CUSTOM PROPERTIES
   ========================================================================== */
:root {
    /* Harmonious Color Palette (Dark Space Theme) */
    --bg-primary: #030712;
    --bg-secondary: rgba(255, 255, 255, 0.02);
    --bg-card: rgba(255, 255, 255, 0.03);
    
    --text-primary: #ffffff;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    
    --accent-blue: #38bdf8;
    --accent-violet: #a855f7;
    --accent-glow: rgba(56, 189, 248, 0.12);
    --border-color: rgba(255, 255, 255, 0.07);
    --border-hover: rgba(255, 255, 255, 0.15);
    
    /* Layout & Animation Tokens */
    --transition-smooth: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-fast: all 0.2s ease;
    --font-heading: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-body: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* Default mouse coordinates for spotlight (updated by JS) */
    --mouse-x: 50%;
    --mouse-y: 50%;
}

/* ==========================================================================
   RESET & FOUNDATIONS
   ========================================================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    height: 100%;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-body);
    min-height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    overflow-x: hidden;
    position: relative;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ==========================================================================
   BACKGROUND VISUAL EFFECTS
   ========================================================================== */
/* Ambient glowing orbs (Slow motion) */
.bg-glow {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    overflow: hidden;
    pointer-events: none;
}

.bg-glow::before,
.bg-glow::after {
    content: '';
    position: absolute;
    width: 60vw;
    height: 60vw;
    border-radius: 50%;
    filter: blur(140px);
    opacity: 0.18;
    mix-blend-mode: screen;
    pointer-events: none;
}

.bg-glow::before {
    background: radial-gradient(circle, var(--accent-blue) 0%, transparent 70%);
    top: -10%;
    left: -10%;
    animation: floatGlowOne 20s infinite alternate ease-in-out;
}

.bg-glow::after {
    background: radial-gradient(circle, var(--accent-violet) 0%, transparent 70%);
    bottom: -10%;
    right: -10%;
    animation: floatGlowTwo 25s infinite alternate ease-in-out;
}

/* Cybergrid background */
.bg-grid {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    opacity: 0.05;
    background-image: 
        linear-gradient(var(--border-color) 1px, transparent 1px),
        linear-gradient(90deg, var(--border-color) 1px, transparent 1px);
    background-size: 50px 50px;
    background-position: center center;
    pointer-events: none;
}

/* Particle Canvas */
#particle-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
    pointer-events: none;
}

/* Mouse spotlight overlay */
.spotlight-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 3;
    pointer-events: none;
    background: radial-gradient(
        600px circle at var(--mouse-x) var(--mouse-y),
        rgba(56, 189, 248, 0.07),
        transparent 80%
    );
    will-change: background;
}

/* ==========================================================================
   LAYOUT CONTAINER
   ========================================================================== */
.container {
    position: relative;
    z-index: 10;
    width: 100%;
    max-width: 1200px;
    min-height: 100vh;
    margin: 0 auto;
    padding: 2.5rem 1.5rem;
    display: grid;
    grid-template-rows: auto 1fr auto;
    align-items: center;
}

/* ==========================================================================
   HEADER / LOGO LOGIC
   ========================================================================== */
.logo-area {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 1rem 0;
    animation: fadeInDown 1.2s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.logo-mark {
    width: 48px;
    height: 48px;
    border-radius: 16px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.01));
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: var(--transition-smooth);
    cursor: pointer;
}

.logo-inner {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    border: 2px solid var(--text-primary);
    position: relative;
    transition: var(--transition-smooth);
}

.logo-inner::after {
    content: '';
    position: absolute;
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background-color: var(--accent-blue);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    box-shadow: 0 0 8px var(--accent-blue);
    transition: var(--transition-smooth);
}

.logo-mark:hover {
    transform: translateY(-2px);
    border-color: var(--border-hover);
    box-shadow: 0 10px 30px rgba(56, 189, 248, 0.15);
}

.logo-mark:hover .logo-inner {
    border-color: var(--accent-blue);
    transform: scale(1.1);
}

/* ==========================================================================
   HERO / MAIN CONTENT
   ========================================================================== */
.hero-section {
    text-align: center;
    padding: 3rem 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
}

.main-title {
    font-family: var(--font-heading);
    font-size: clamp(2.8rem, 8vw + 0.8rem, 6.5rem);
    font-weight: 700;
    letter-spacing: -0.04em;
    color: var(--text-primary);
    line-height: 1.1;
    position: relative;
    user-select: none;
    animation: scaleInUp 1.4s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.letter-glow {
    position: relative;
    display: inline-block;
    transition: var(--transition-smooth);
    text-shadow: 
        0 0 40px rgba(255, 255, 255, 0.15),
        0 0 80px rgba(255, 255, 255, 0.05);
}

/* Interactive title effect */
.main-title:hover .letter-glow {
    text-shadow: 
        0 0 20px rgba(255, 255, 255, 0.3),
        0 0 50px rgba(56, 189, 248, 0.4),
        0 0 100px rgba(168, 85, 247, 0.2);
    transform: scale(1.02);
}

.tagline {
    font-family: var(--font-body);
    font-size: clamp(0.9rem, 2vw + 0.3rem, 1.25rem);
    font-weight: 300;
    color: var(--text-secondary);
    letter-spacing: 0.06em;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.75rem;
    max-width: 800px;
    animation: fadeInUp 1.4s cubic-bezier(0.16, 1, 0.3, 1) 0.2s both;
}

.tag-item {
    transition: var(--transition-fast);
    position: relative;
    padding: 0.2rem 0;
}

.tag-item::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0%;
    height: 1px;
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-violet));
    transition: var(--transition-smooth);
}

.tag-item:hover {
    color: var(--text-primary);
}

.tag-item:hover::after {
    width: 100%;
}

.tag-divider {
    color: var(--text-muted);
    font-size: 0.8rem;
    user-select: none;
}

/* ==========================================================================
   FOOTER / DOCK & LINKS
   ========================================================================== */
.footer-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
    width: 100%;
    animation: fadeInUp 1.4s cubic-bezier(0.16, 1, 0.3, 1) 0.4s both;
}

/* Premium Glassmorphism Dock Panel */
.links-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    padding: 0.6rem;
    border-radius: 100px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: 
        0 4px 30px rgba(0, 0, 0, 0.3),
        inset 0 1px 1px rgba(255, 255, 255, 0.05);
    transition: var(--transition-smooth);
}

.links-card:hover {
    border-color: var(--border-hover);
    box-shadow: 
        0 15px 35px rgba(0, 0, 0, 0.5),
        0 0 30px rgba(56, 189, 248, 0.05);
}

.link-item {
    color: var(--text-secondary);
    text-decoration: none;
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.75rem 1.4rem;
    border-radius: 100px;
    transition: var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.link-item .icon {
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.link-item:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.link-item:hover .icon {
    transform: scale(1.15) translateY(-1px);
}

/* Subtle badge indicator on contact */
#link-email::before {
    content: '';
    position: absolute;
    top: 10px;
    right: 14px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: var(--accent-blue);
    box-shadow: 0 0 6px var(--accent-blue);
}

.copyright {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 400;
    letter-spacing: 0.02em;
    text-align: center;
}

/* ==========================================================================
   ANIMATIONS CODE
   ========================================================================== */
@keyframes floatGlowOne {
    0% {
        transform: translate(0, 0) scale(1);
    }
    100% {
        transform: translate(10vw, 8vh) scale(1.1);
    }
}

@keyframes floatGlowTwo {
    0% {
        transform: translate(0, 0) scale(1.1);
    }
    100% {
        transform: translate(-12vw, -8vh) scale(1);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes scaleInUp {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(40px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

/* ==========================================================================
   RESPONSIVE DESIGN ADAPTATIONS
   ========================================================================== */
@media (max-width: 640px) {
    .container {
        padding: 2rem 1rem;
        grid-template-rows: auto 1fr auto;
        gap: 2rem;
    }
    
    .hero-section {
        gap: 1.2rem;
    }
    
    .tagline {
        flex-direction: column;
        gap: 0.4rem;
    }
    
    .tag-divider {
        display: none;
    }

    .links-card {
        width: 100%;
        flex-direction: column;
        border-radius: 20px;
        padding: 0.5rem;
    }

    .link-item {
        width: 100%;
        justify-content: center;
        border-radius: 12px;
    }
    
    #link-email::before {
        top: 50%;
        right: 20px;
        transform: translateY(-50%);
    }
}

@media (max-height: 500px) and (orientation: landscape) {
    .container {
        min-height: auto;
        grid-template-rows: auto;
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    .hero-section {
        padding: 1rem 0;
    }
}