/* 
   Modern Minimal Design System 
   Authors: Niraj Rathod & Antigravity
*/

:root {
    /* Color Palette - Dark Mode First */
    --bg-body: #0a0a0a;
    --bg-card: #161616;
    --bg-card-hover: #1f1f1f;

    --text-main: #ededed;
    --text-muted: #a1a1a1;
    --text-accent: #3b82f6;

    --border-color: #333333;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
    --gradient-text: linear-gradient(90deg, #ffffff 0%, #a1a1a1 100%);

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 8rem;

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Light Mode Overrides */
html.light-mode {
    --bg-body: #ffffff;
    --bg-card: #f5f5f5;
    --bg-card-hover: #e5e5e5;

    --text-main: #171717;
    --text-muted: #666666;
    --text-accent: #2563eb;

    --border-color: #e5e5e5;

    --gradient-text: linear-gradient(90deg, #171717 0%, #404040 100%);
}

/* Reset & Base */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    background-color: var(--bg-body);
    color: var(--text-main);
}

body {
    background-color: transparent;
    color: var(--text-main);
    font-family: var(--font-sans);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    transition: background-color var(--transition-smooth), color var(--transition-smooth);
    overflow-x: hidden;
    min-height: 100vh;
}

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

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

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

.display-title {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1.1;
    margin-bottom: var(--space-sm);
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
    letter-spacing: -0.01em;
}

.lead {
    font-size: 1.25rem;
    color: var(--text-muted);
    max-width: 60ch;
    margin-bottom: var(--space-md);
}

/* Layout Utilities */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-sm);
}

.section,
.footer {
    padding: var(--space-xl) 0;
}

.grid {
    display: grid;
    gap: var(--space-md);
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

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

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

/* Components */

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: var(--space-sm) 0;
    z-index: 1000;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: none;
    transition: border-color var(--transition-smooth), background var(--transition-smooth);
}

html.light-mode .navbar {
    background: rgba(255, 255, 255, 0.95);
    border-bottom: none;
}

.navbar.scrolled {
    border-bottom: none;
}

.nav-logo {
    font-weight: 700;
    font-size: 1.5rem;
    letter-spacing: -0.02em;
}

.nav-links {
    display: flex;
    gap: var(--space-md);
}

.nav-link {
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--text-muted);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    transition: all var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-main);
    background-color: var(--bg-card-hover);
    transform: translateY(-2px);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
}

.btn-primary {
    background: var(--text-main);
    color: var(--bg-body);
}

.btn-primary:hover {
    transform: translateY(-2px);
    opacity: 0.9;
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-main);
    transition: all var(--transition-fast);
}

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

/* Cards */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: var(--space-md);
    transition: transform var(--transition-smooth), border-color var(--transition-smooth);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.card:hover {
    transform: translateY(-4px);
    border-color: var(--text-muted);
    background: var(--bg-card-hover);
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.card-text {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: var(--space-sm);
    flex-grow: 1;
}

/* Footer */
.footer {
    padding: var(--space-lg) 0;
    border-top: none;
    margin-top: auto;
    text-align: center;
    color: var(--text-muted);
}

.social-links {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
    margin-bottom: var(--space-sm);
    font-size: 1.5rem;
}

.social-links a:hover {
    color: var(--text-accent);
    transform: scale(1.1);
}

/* Mobile Menu */
.mobile-toggle {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

.mobile-only {
    display: none !important;
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 60px;
        left: 0;
        width: 100%;
        height: calc(100vh - 60px);
        background: var(--bg-body);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        transform: translateX(100%);
        transition: transform var(--transition-smooth);
    }

    .nav-links.active {
        transform: translateX(0);
    }

    .mobile-toggle {
        display: block;
    }

    .mobile-only {
        display: block !important;
    }

    .desktop-only {
        display: none !important;
    }

    .skills-section {
        order: -1;
    }
}



/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}


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

/* Skills */
.skill-tag {
    display: inline-block;
    padding: 0.5rem 1rem;
    border-radius: 50px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    margin: 0.25rem;
    font-size: 0.9rem;
    transition: all var(--transition-fast);
    color: var(--text-muted);
}

.skill-tag:hover {
    border-color: var(--text-accent);
    transform: translateY(-2px);
    background: var(--bg-card-hover);
    color: var(--text-main);
}

/* Utilities */
.me-2 {
    margin-right: 0.5rem !important;
}

/* Experience List */
.experience-list {
    list-style: disc;
    padding-left: 1.2rem;
    margin-top: 0.5rem;
}

.experience-list li {
    margin-bottom: 0.25rem;
    color: var(--text-muted);
}