/* ========================================
   GLASSMORPHIC PORTFOLIO - STYLES
   Modern iOS-inspired Design System
   ======================================== */

/* ===== CSS VARIABLES ===== */
:root {
    /* Colors */
    --color-bg: #000000;
    --color-glass: rgba(255, 255, 255, 0.05);
    --color-glass-border: rgba(255, 255, 255, 0.1);
    --color-text: #ffffff;
    --color-text-secondary: rgba(255, 255, 255, 0.7);
    --color-accent-cyan: #00ffff;
    --color-accent-purple: #a855f7;
    --color-accent-pink: #ec4899;

    /* Glass Properties */
    --glass-blur: 20px;
    --glass-opacity: 0.05;
    --glass-border: 1px;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;

    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 1rem;
    --radius-lg: 1.5rem;
    --radius-xl: 2rem;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== RESET & BASE ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ===== ANIMATED BACKGROUND ===== */
.bg-wrapper {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: var(--color-bg);
}

@keyframes bgShift {

    0%,
    100% {
        transform: scale(1) rotate(0deg);
    }

    50% {
        transform: scale(1.1) rotate(5deg);
    }
}

/* Floating orbs hidden */
.floating-orb {
    display: none;
}

@keyframes float {

    0%,
    100% {
        transform: translate(0, 0);
    }

    33% {
        transform: translate(30px, -30px);
    }

    66% {
        transform: translate(-30px, 30px);
    }
}

/* ===== GLASS UTILITIES ===== */
.glass {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: var(--glass-border) solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.glass-strong {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: var(--glass-border) solid rgba(255, 255, 255, 0.2);
}

/* Glow utilities neutralized */
.glow-cyan,
.glow-purple,
.glow-pink {
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

/* ===== TYPOGRAPHY ===== */
.gradient-text {
    background: linear-gradient(135deg, var(--color-accent-cyan), var(--color-accent-purple), var(--color-accent-pink));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    background-size: 200% 200%;
    animation: gradientFlow 5s ease infinite;
}

@keyframes gradientFlow {

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

    50% {
        background-position: 100% 50%;
    }
}

/* ===== NAVIGATION ===== */
.navbar {
    position: fixed;
    /* top: var(--spacing-md); */
    top: 1rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1000;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-xl);
    transition: var(--transition-medium);
}

.nav-links {
    display: flex;
    gap: var(--spacing-md);
    list-style: none;
    position: relative;
}

/* Liquid Glass Indicator */
.nav-indicator {
    position: absolute;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: var(--radius-xl);
    transition: transform 0.35s ease-out, width 0.35s ease-out, height 0.3s ease-out;
    pointer-events: none;
    z-index: -1;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.15);
}

.nav-link {
    color: var(--color-text);
    text-decoration: none;
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
    position: relative;
    z-index: 1;
}

.nav-link.active {
    color: #00ffff;
}

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

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--color-text);
    font-size: 1.5rem;
    cursor: pointer;
}

/* ===== HERO SECTION ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg) var(--spacing-md);
    position: relative;
}

.hero-content {
    max-width: 1200px;
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.hero-text h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 900;
    margin-bottom: var(--spacing-md);
    line-height: 1.1;
}

.hero-text p {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}

.hero-card {
    padding: var(--spacing-lg);
    border-radius: var(--radius-xl);
    text-align: center;
    transition: var(--transition-slow);
}

.hero-card:hover {
    transform: translateY(-10px);
}

.profile-img {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    object-fit: cover;
    margin: 0 auto var(--spacing-md);
    border: 3px solid rgba(255, 255, 255, 0.2);
    transition: var(--transition-medium);
}

.profile-img:hover {
    transform: scale(1.05);
    border-color: var(--color-accent-cyan);
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition-medium);
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-accent-cyan), var(--color-accent-purple));
    color: #000;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
}

.btn-glass {
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-text);
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
}

.btn-glass:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: var(--color-accent-cyan);
}

/* ===== SECTIONS ===== */
.section {
    padding: var(--spacing-xl) var(--spacing-md);
    max-width: 1400px;
    margin: 0 auto;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    text-align: center;
    margin-bottom: var(--spacing-lg);
    font-weight: 800;
}

/* ===== SKILLS ===== */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
}

.skill-card {
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: var(--transition-medium);
}

.skill-card:hover {
    transform: translateY(-10px) scale(1.05);
    background: rgba(255, 255, 255, 0.1);
}

.skill-card img {
    width: 80px;
    height: 80px;
    object-fit: contain;
    margin-bottom: var(--spacing-sm);
}

.skill-card h3 {
    font-size: 1rem;
    font-weight: 600;
}

/* ===== PROJECTS ===== */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-md);
}

.project-card {
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition-slow);
    position: relative;
    height: 400px;
}

.project-card:hover {
    transform: translateY(-15px) rotateX(2deg);
}

.project-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.project-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.95), transparent);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: var(--spacing-md);
    opacity: 0;
    transition: var(--transition-medium);
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.project-title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xs);
    transform: translateY(20px);
    transition: var(--transition-medium);
}

.project-card:hover .project-title {
    transform: translateY(0);
}

.project-desc {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
    transform: translateY(20px);
    transition: var(--transition-medium);
    transition-delay: 0.1s;
}

.project-card:hover .project-desc {
    transform: translateY(0);
}

.project-link {
    transform: translateY(20px);
    transition: var(--transition-medium);
    transition-delay: 0.2s;
}

.project-card:hover .project-link {
    transform: translateY(0);
}

/* ===== CONTACT ===== */
.contact-card {
    max-width: 600px;
    margin: 0 auto;
    padding: var(--spacing-lg);
    border-radius: var(--radius-xl);
    text-align: center;
}

.contact-card h2 {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.contact-card p {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}

.social-links {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    margin-top: var(--spacing-md);
}

.social-link {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-medium);
    font-size: 1.5rem;
}

.social-link svg {
    width: 28px;
    height: 28px;
    fill: currentColor;
    transition: var(--transition-fast);
}

.social-link:hover {
    transform: translateY(-5px) scale(1.1);
}

.social-link:hover svg {
    filter: drop-shadow(0 0 8px rgba(255, 255, 255, 0.5));
}

/* ===== LEETCODE STATS ===== */
.leetcode-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.leetcode-card {
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: var(--transition-medium);
}

.leetcode-card:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.08);
}

.leetcode-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-xs);
}

.leetcode-value {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-text);
    line-height: 1.2;
}

.leetcode-label {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    margin-top: var(--spacing-xs);
}

.leetcode-breakdown {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-lg);
    border-radius: var(--radius-xl);
}

.leetcode-breakdown h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.difficulty-bars {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.difficulty-item {
    width: 100%;
}

.difficulty-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--spacing-xs);
}

.difficulty-name {
    font-weight: 600;
}

.difficulty-name.easy {
    color: #00b8a3;
}

.difficulty-name.medium {
    color: #ffc01e;
}

.difficulty-name.hard {
    color: #ff375f;
}

.difficulty-count {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}

.difficulty-bar {
    width: 100%;
    height: 10px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 5px;
    overflow: hidden;
}

.difficulty-progress {
    height: 100%;
    border-radius: 5px;
    transition: width 1s ease-out;
    width: 0%;
}

.easy-progress {
    background: linear-gradient(90deg, #00b8a3, #00d4aa);
}

.medium-progress {
    background: linear-gradient(90deg, #ffc01e, #ffda47);
}

.hard-progress {
    background: linear-gradient(90deg, #ff375f, #ff6b8a);
}

.leetcode-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.acceptance-rate {
    color: var(--color-text-secondary);
}

.acceptance-rate strong {
    color: var(--color-text);
}

/* Streak Glow Animation */
.streak-glow {
    animation: goldenGlow 1.5s ease-out;
    text-shadow: 0 0 20px #ffd700, 0 0 40px #ffa500;
}

@keyframes goldenGlow {
    0% {
        text-shadow: 0 0 5px #ffd700;
        transform: scale(1);
    }

    50% {
        text-shadow: 0 0 30px #ffd700, 0 0 60px #ffa500, 0 0 80px #ff8c00;
        transform: scale(1.1);
    }

    100% {
        text-shadow: 0 0 20px #ffd700, 0 0 40px #ffa500;
        transform: scale(1);
    }
}

/* ===== ANIMATIONS ===== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(0, 0, 0, 0.95);
        backdrop-filter: blur(20px);
        padding: var(--spacing-md);
        border-radius: var(--radius-lg);
        margin-top: var(--spacing-sm);
    }

    .nav-links.active {
        display: flex;
    }

    .mobile-toggle {
        display: block;
    }

    .projects-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .section {
        padding: var(--spacing-lg) var(--spacing-sm);
    }

    .profile-img {
        width: 150px;
        height: 150px;
    }
}