/* ========================================
   DeshadSpace 2.0 - Modern CSS Framework
   Next-Level Space Tech Design
   ======================================== */

/* ========================================
   CSS Variables & Theme
   ======================================== */
:root {
    /* Enhanced Color Palette */
    --cyan-light: #00e5ff;
    --cyan: #00bcd4;
    --cyan-dark: #0097a7;
    
    --orange-light: #ffb74d;
    --orange: #ff9800;
    --orange-dark: #f57c00;
    
    --purple: #9c27b0;
    --purple-light: #ba68c8;
    --pink: #e91e63;
    
    /* Backgrounds */
    --bg-dark: #0a0a0f;
    --bg-darker: #050508;
    --bg-card: rgba(255, 255, 255, 0.03);
    --bg-card-hover: rgba(255, 255, 255, 0.06);
    
    /* Glass Effect */
    --glass-bg: rgba(20, 20, 30, 0.6);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--cyan) 0%, var(--purple) 100%);
    --gradient-accent: linear-gradient(135deg, var(--orange) 0%, var(--pink) 100%);
    --gradient-mesh: radial-gradient(at 40% 20%, var(--cyan-dark) 0px, transparent 50%),
                      radial-gradient(at 80% 0%, var(--purple) 0px, transparent 50%),
                      radial-gradient(at 0% 50%, var(--orange-dark) 0px, transparent 50%);
    
    /* Typography */
    --font-heading: 'Space Grotesk', 'Inter', sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 4rem;
    
    /* Shadows & Glows */
    --glow-cyan: 0 0 20px rgba(0, 188, 212, 0.5);
    --glow-orange: 0 0 20px rgba(255, 152, 0, 0.5);
    --glow-purple: 0 0 20px rgba(156, 39, 176, 0.5);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

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

body {
    font-family: var(--font-body);
    background: var(--bg-dark);
    color: #ffffff;
    line-height: 1.7;
    overflow-x: hidden;
    position: relative;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Animated mesh gradient background */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-mesh);
    opacity: 0.15;
    z-index: -1;
    animation: meshMove 20s ease-in-out infinite;
}

@keyframes meshMove {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(5%, -5%) rotate(1deg); }
    66% { transform: translate(-5%, 5%) rotate(-1deg); }
}

/* ========================================
   Typography
   ======================================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
}

h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-md);
}

h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    color: var(--cyan);
    margin-bottom: var(--space-md);
}

h3 {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    color: var(--orange);
}

p {
    font-size: clamp(1rem, 2vw, 1.125rem);
    color: #cccccc;
    margin-bottom: var(--space-md);
    line-height: 1.8;
}

a {
    color: var(--cyan);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--cyan-light);
}

/* Gradient Text Effect */
.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.gradient-text-accent {
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Glowing Text */
.text-glow {
    text-shadow: var(--glow-cyan);
}

/* ========================================
   Navigation
   ======================================== */
nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    padding: 1rem 2rem;
    transition: all var(--transition-normal);
}

nav.scrolled {
    padding: 0.75rem 2rem;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    cursor: pointer;
}

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

.nav-link {
    position: relative;
    font-weight: 600;
    color: #cccccc;
    padding: 0.5rem 0;
    transition: color var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width var(--transition-normal);
}

.nav-link:hover {
    color: var(--cyan);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

/* Mobile Navigation Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--cyan);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* Mobile Menu */
@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        flex-direction: column;
        background: var(--glass-bg);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        padding: 2rem;
        gap: 1.5rem;
        transform: translateX(-100%);
        transition: transform var(--transition-normal);
        box-shadow: 0 10px 50px rgba(0, 0, 0, 0.5);
    }
    
    .nav-menu.active {
        transform: translateX(0);
    }
    
    .nav-link {
        font-size: 1.25rem;
    }
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    border-radius: 50px;
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    border: none;
    text-decoration: none;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--glow-cyan);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(0, 188, 212, 0.7);
}

.btn-secondary {
    background: var(--gradient-accent);
    color: white;
    box-shadow: var(--glow-orange);
}

.btn-secondary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(255, 152, 0, 0.7);
}

.btn-glass {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    color: white;
}

.btn-glass:hover {
    background: var(--bg-card-hover);
    border-color: var(--cyan);
    transform: translateY(-2px);
}

/* Magnetic Button Effect (Desktop Only) */
@media (min-width: 1024px) {
    .btn-magnetic {
        transition: transform 0.1s ease;
    }
}

/* ========================================
   Glass Cards
   ======================================== */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: var(--space-lg);
    box-shadow: var(--glass-shadow);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.glass-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.5s;
}

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

.glass-card:hover {
    transform: translateY(-8px);
    border-color: var(--cyan);
    box-shadow: var(--glow-cyan), var(--glass-shadow);
}

/* ========================================
   Card Layouts
   ======================================== */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
    margin: var(--space-xl) 0;
}

.project-card {
    position: relative;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: var(--space-lg);
    transition: all var(--transition-normal);
    cursor: pointer;
}

.project-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: 20px 20px 0 0;
    transform: scaleX(0);
    transition: transform var(--transition-normal);
}

.project-card:hover::after {
    transform: scaleX(1);
}

.project-card:hover {
    transform: translateY(-10px) scale(1.02);
    border-color: var(--cyan);
    box-shadow: var(--glow-cyan), var(--glass-shadow);
}

.card-icon {
    font-size: 3rem;
    margin-bottom: var(--space-md);
    display: inline-block;
    filter: drop-shadow(var(--glow-cyan));
}

.card-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.badge-published {
    background: rgba(0, 229, 255, 0.2);
    color: var(--cyan-light);
    border: 1px solid var(--cyan);
}

.badge-active {
    background: rgba(255, 152, 0, 0.2);
    color: var(--orange-light);
    border: 1px solid var(--orange);
}

.badge-progress {
    background: rgba(156, 39, 176, 0.2);
    color: var(--purple-light);
    border: 1px solid var(--purple);
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: var(--space-2xl) var(--space-md);
    text-align: center;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 50% 50%, rgba(0, 188, 212, 0.1) 0%, transparent 50%);
    animation: pulse 8s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.3; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(1.1); }
}

.hero-content {
    position: relative;
    z-index: 10;
    max-width: 900px;
}

.hero-subtitle {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    color: var(--orange);
    font-weight: 600;
    margin-bottom: var(--space-lg);
}

.hero-description {
    font-size: clamp(1.125rem, 2.5vw, 1.375rem);
    color: #aaaaaa;
    margin-bottom: var(--space-xl);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* Floating Animation */
.float {
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

/* ========================================
   Container & Sections
   ======================================== */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.section {
    padding: var(--space-2xl) 0;
    position: relative;
}

.section-title {
    text-align: center;
    margin-bottom: var(--space-xl);
    position: relative;
    display: inline-block;
    left: 50%;
    transform: translateX(-50%);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

/* ========================================
   Skills Section
   ======================================== */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-xl);
    margin: var(--space-xl) 0;
}

.skill-category {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: var(--space-lg);
}

.skill-category h3 {
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-sm);
    border-bottom: 2px solid var(--cyan);
}

.skill-item {
    margin-bottom: var(--space-md);
}

.skill-item span {
    display: block;
    margin-bottom: var(--space-xs);
    color: #cccccc;
    font-weight: 600;
}

.skill-bar-container {
    width: 100%;
    height: 8px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    overflow: hidden;
    position: relative;
}

.skill-bar {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 10px;
    transition: width 1s ease-in-out;
    position: relative;
    box-shadow: var(--glow-cyan);
}

.skill-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

/* ========================================
   Timeline
   ======================================== */
.timeline {
    position: relative;
    padding: var(--space-xl) 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--cyan), var(--purple));
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    margin-bottom: var(--space-xl);
    width: calc(50% - 30px);
}

.timeline-item:nth-child(odd) {
    margin-left: 0;
    text-align: right;
}

.timeline-item:nth-child(even) {
    margin-left: calc(50% + 30px);
}

.timeline-marker {
    position: absolute;
    top: 0;
    width: 20px;
    height: 20px;
    background: var(--cyan);
    border-radius: 50%;
    border: 4px solid var(--bg-dark);
    box-shadow: var(--glow-cyan);
}

.timeline-item:nth-child(odd) .timeline-marker {
    right: -40px;
}

.timeline-item:nth-child(even) .timeline-marker {
    left: -40px;
}

.timeline-content {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 15px;
    padding: var(--space-lg);
    transition: all var(--transition-normal);
}

.timeline-content:hover {
    transform: scale(1.05);
    border-color: var(--cyan);
    box-shadow: var(--glow-cyan);
}

/* Mobile Timeline */
@media (max-width: 768px) {
    .timeline::before {
        left: 20px;
    }
    
    .timeline-item,
    .timeline-item:nth-child(odd),
    .timeline-item:nth-child(even) {
        width: 100%;
        margin-left: 50px;
        text-align: left;
    }
    
    .timeline-marker,
    .timeline-item:nth-child(odd) .timeline-marker,
    .timeline-item:nth-child(even) .timeline-marker {
        left: -40px;
    }
}

/* ========================================
   Footer
   ======================================== */
footer {
    background: var(--bg-darker);
    border-top: 1px solid var(--glass-border);
    padding: var(--space-xl) var(--space-md);
    text-align: center;
    margin-top: var(--space-2xl);
}

footer p {
    color: #777;
    margin-bottom: var(--space-sm);
}

/* ========================================
   Rocket Cursor (Desktop Only)
   ======================================== */
.rocket-cursor {
    position: fixed;
    width: 22px;
    height: 22px;
    pointer-events: none;
    z-index: 10000;
    transform: translate(-50%, -50%);
    filter: drop-shadow(var(--glow-cyan));
    display: none;
}

.trail {
    position: fixed;
    width: 8px;
    height: 8px;
    background: var(--orange);
    border-radius: 50%;
    pointer-events: none;
    opacity: 0.8;
    z-index: 9999;
    box-shadow: var(--glow-orange);
    animation: trailFade 0.6s linear forwards;
}

@keyframes trailFade {
    to {
        opacity: 0;
        transform: translateY(20px) scale(0.5);
    }
}

@media (min-width: 1024px) and (hover: hover) {
    body {
        cursor: none;
    }
    
    .rocket-cursor {
        display: block;
    }
}

/* ========================================
   Scroll Animations
   ======================================== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.slide-in-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.slide-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.slide-in-right {
    opacity: 0;
    transform: translateX(50px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.slide-in-right.visible {
    opacity: 1;
    transform: translateX(0);
}

/* ========================================
   Utility Classes
   ======================================== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--space-sm); }
.mt-2 { margin-top: var(--space-md); }
.mt-3 { margin-top: var(--space-lg); }
.mt-4 { margin-top: var(--space-xl); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--space-sm); }
.mb-2 { margin-bottom: var(--space-md); }
.mb-3 { margin-bottom: var(--space-lg); }
.mb-4 { margin-bottom: var(--space-xl); }

.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }

/* ========================================
   Responsive Utilities
   ======================================== */
@media (max-width: 640px) {
    .hide-mobile { display: none !important; }
}

@media (min-width: 641px) and (max-width: 1024px) {
    .hide-tablet { display: none !important; }
}

@media (min-width: 1025px) {
    .hide-desktop { display: none !important; }
}

/* ========================================
   Performance & Accessibility
   ======================================== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus Styles for Accessibility */
a:focus-visible,
button:focus-visible {
    outline: 2px solid var(--cyan);
    outline-offset: 2px;
}

/* Selection */
::selection {
    background: var(--cyan);
    color: var(--bg-dark);
}

::-moz-selection {
    background: var(--cyan);
    color: var(--bg-dark);
}