/* =========================================================================
   STYLE.CSS - Core Styles for Param Chotaliya's Portfolio
   Theme: Premium Dark Mode with Glassmorphism and Neon Accents
   ========================================================================= */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=Playfair+Display:ital,wght@0,600;1,600&display=swap');

/* --- CSS Variables --- */
:root {
    /* Colors - Google Material Theme */
    --hue-color: 240;
    
    /* Backgrounds (Dark Mode Default) */
    --bg-main: #121212;
    --bg-panel: #202124;
    --bg-card: #28292a;
    --bg-hero-card: #202124;
    
    /* Accents (Google Brand Colors) */
    --accent-primary: #4285F4; /* Google Blue */
    --accent-secondary: #34A853; /* Google Green */
    --accent-warning: #FBBC05; /* Google Yellow */
    --accent-danger: #EA4335; /* Google Red */
    --accent-gradient: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    --accent-gradient-hover: linear-gradient(135deg, var(--accent-secondary), var(--accent-primary));
    
    /* Text */
    --text-primary: #e8eaed;
    --text-secondary: #9aa0a6;
    --text-muted: #80868b;
    
    /* Borders & UI (Material) */
    --border-glass: rgba(255, 255, 255, 0.1);
    --border-glass-hover: rgba(255, 255, 255, 0.2);
    --shadow-glow: none;
    --shadow-glass: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);

    /* Typography */
    --font-heading: 'Roboto', sans-serif;
    --font-body: 'Open Sans', sans-serif;
    --font-accent: 'Roboto', sans-serif;

    /* Font Sizes */
    --h1-font: 3rem;
    --h2-font: 2.25rem;
    --h3-font: 1.5rem;
    --normal-font: 1rem;
    --small-font: 0.875rem;
    --smaller-font: 0.813rem;

    /* Font Weights */
    --font-light: 300;
    --font-medium: 500;
    --font-semi: 600;
    --font-bold: 700;

    /* Margins */
    --mb-0-5: 0.5rem;
    --mb-1: 1rem;
    --mb-1-5: 1.5rem;
    --mb-2: 2rem;
    --mb-2-5: 2.5rem;
    --mb-3: 3rem;

    /* Z Index */
    --z-tooltip: 10;
    --z-fixed: 100;
    --z-modal: 1000;
}

/* --- Theme Variations --- */
body.light-theme {
    --bg-main: #ffffff;
    --bg-panel: #f8f9fa;
    --bg-card: #ffffff;
    --bg-hero-card: #ffffff;
    
    --text-primary: #202124;
    --text-secondary: #5f6368;
    --text-muted: #80868b;
    
    --border-glass: rgba(0, 0, 0, 0.1);
    --border-glass-hover: rgba(0, 0, 0, 0.2);
    --shadow-glass: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);
    
    --accent-primary: #4285F4;
    --accent-secondary: #34A853;
}

body.light-theme .header.scroll-header {
    background: hsla(var(--hue-color), 20%, 95%, 0.85);
}

/* Always blurred light header on mobile and mid-size */
@media screen and (max-width: 967px) {
    body.light-theme .header {
        background: hsla(var(--hue-color), 20%, 95%, 0.6);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
    }
    body.light-theme .nav-menu {
        background: var(--bg-main); 
    }
}




body.light-theme .footer-title,
body.light-theme .footer-link,
body.light-theme .footer-copy {
    color: var(--text-primary);
}

body.light-theme .footer-social-link {
    background-color: var(--text-primary);
    color: var(--bg-main);
}

body.light-theme .footer-social-link:hover {
    background-color: var(--accent-primary);
    color: #fff;
}

body.blue-theme {
    --hue-color: 210;
    --bg-main: hsl(var(--hue-color), 50%, 8%);
    --bg-panel: hsla(var(--hue-color), 40%, 15%, 0.5);
    --bg-card: hsla(var(--hue-color), 30%, 20%, 0.4);
    --bg-hero-card: hsla(var(--hue-color), 30%, 25%, 0.6);
    
    --accent-primary: hsl(210, 100%, 65%);
    --accent-secondary: hsl(180, 100%, 45%);
    --shadow-glow: 0 0 20px hsla(210, 100%, 65%, 0.4);
}

/* --- Font Variations (Removed) --- */

/* Responsive Typography */
@media screen and (min-width: 968px) {
    :root {
        --h1-font: 4.5rem;
        --h2-font: 3rem;
        --h3-font: 1.75rem;
        --normal-font: 1.125rem;
        --small-font: 0.938rem;
        --smaller-font: 0.875rem;
    }
}

/* --- Base --- */
* {
    box-sizing: border-box;
    padding: 0;
    margin: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: var(--normal-font);
    background-color: var(--bg-main);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

h1, h2, h3, h4 {
    font-family: var(--font-heading);
    color: var(--text-primary);
    font-weight: var(--font-semi);
}

ul {
    list-style: none;
}

a {
    text-decoration: none;
    color: inherit;
    transition: 0.2s;
}

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

/* --- Reusable Components --- */
.section {
    padding: 6rem 0 2rem;
}

.section-title, .section-subtitle {
    text-align: center;
}

.section-title {
    font-size: var(--h2-font);
    margin-bottom: var(--mb-0-5);
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

.section-subtitle {
    display: block;
    font-size: var(--small-font);
    color: var(--text-muted);
    margin-bottom: var(--mb-3);
    text-transform: uppercase;
    letter-spacing: 2px;
}

.container {
    max-width: 1024px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.grid {
    display: grid;
    gap: 1.5rem;
}

/* --- Background Effects (Blobs & Glow) --- */
.blob-bg {
    position: fixed;
    border-radius: 50%;
    filter: blur(100px);
    z-index: -1;
    opacity: 0.4;
    animation: float 10s infinite alternate ease-in-out;
}

.blob-1 {
    width: 400px;
    height: 400px;
    background: var(--accent-primary);
    top: -100px;
    left: -100px;
}

.blob-2 {
    width: 300px;
    height: 300px;
    background: var(--accent-secondary);
    bottom: -50px;
    right: -50px;
    animation-delay: 2s;
}

.glow-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, transparent 0%, var(--bg-main) 100%);
    z-index: -1;
    pointer-events: none;
}

#bg-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -2;
    pointer-events: none;
}

/* --- ML Background Overlay Elements --- */
.ml-bg-elements {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
    overflow: hidden;
}

.ml-icon {
    position: absolute;
    color: var(--accent-primary);
    opacity: 0.05;
    font-size: 5rem;
    animation: float-ml 15s infinite ease-in-out;
}

.ml-math {
    position: absolute;
    color: var(--text-muted);
    font-family: monospace;
    font-size: 2.5rem;
    font-weight: bold;
    opacity: 0.04;
    animation: float-ml 20s infinite ease-in-out;
}

.ml-bg-elements i:nth-child(1) { top: 15%; left: 8%; animation-duration: 18s; }
.ml-bg-elements i:nth-child(2) { top: 65%; left: 85%; animation-duration: 22s; animation-direction: reverse; }
.ml-bg-elements i:nth-child(3) { top: 35%; left: 90%; animation-duration: 25s; }
.ml-bg-elements i:nth-child(4) { top: 85%; left: 15%; animation-duration: 19s; animation-direction: reverse; }
.ml-bg-elements span:nth-child(5) { top: 25%; left: 75%; animation-duration: 28s; }
.ml-bg-elements span:nth-child(6) { top: 55%; left: 10%; animation-duration: 24s; animation-direction: reverse; }

@keyframes float-ml {
    0% { transform: translateY(0) rotate(0deg) scale(1); }
    50% { transform: translateY(-10px) rotate(5deg) scale(1.02); }
    100% { transform: translateY(0) rotate(0deg) scale(1); }
}

/* --- Custom UI Switchers (Theme/Font) --- */
.nav-theme-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: hsla(0, 0%, 100%, 0.05);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-glass);
    color: var(--text-primary);
    font-size: 1.2rem;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: 0.3s;
}

.nav-theme-btn:hover {
    transform: scale(1.1);
    background: var(--accent-gradient);
    color: #fff;
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-glow);
}

@keyframes float {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(15px, 15px) scale(1.03); }
}

/* --- Material Surfaces --- */
.glass-panel {
    background: var(--bg-panel);
    border: 1px solid var(--border-glass);
    border-radius: 8px;
    box-shadow: var(--shadow-glass);
    padding: 2rem;
}

.glass-card {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: 8px;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    box-shadow: var(--shadow-glass);
}

.glass-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 6px rgba(0,0,0,0.2);
}

.glass-card-small {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: 8px;
    padding: 1.5rem;
    text-align: center;
    transition: 0.2s;
    box-shadow: var(--shadow-glass);
}

/* --- Floating 3D Overlapping Objects --- */
.relative-container {
    position: relative;
    transform-style: preserve-3d;
}

.floating-3d-obj {
    position: absolute;
    pointer-events: none;
    z-index: 10;
    color: var(--accent-primary);
    opacity: 0.8;
    filter: drop-shadow(0 0 10px var(--accent-primary));
}

.floating-3d-obj i {
    font-size: 3rem;
}

.obj-1 {
    top: -30px;
    right: -20px;
    animation: obj-spin 8s linear infinite, float-obj 4s ease-in-out infinite alternate;
}

.obj-2 {
    bottom: -20px;
    left: -20px;
    color: var(--accent-secondary);
    filter: drop-shadow(0 0 10px var(--accent-secondary));
    animation: obj-spin 6s linear infinite reverse, float-obj 5s ease-in-out infinite alternate-reverse;
}

.obj-3 {
    top: 50%;
    right: -40px;
    color: var(--text-primary);
    filter: drop-shadow(0 0 10px var(--text-primary));
    animation: obj-spin 10s linear infinite, float-obj 3s ease-in-out infinite alternate;
}

@keyframes obj-spin {
    0% { transform: translateZ(50px) rotateX(0) rotateY(0) rotateZ(0); }
    100% { transform: translateZ(50px) rotateX(360deg) rotateY(360deg) rotateZ(180deg); }
}

@keyframes float-obj {
    0% { margin-top: 0; }
    100% { margin-top: -20px; }
}

/* --- Buttons (Google Style) --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 1.5rem;
    border-radius: 24px;
    font-weight: 500;
    transition: 0.2s ease;
    cursor: pointer;
    gap: 0.5rem;
    border: none;
    outline: none;
    font-family: var(--font-accent);
}

.btn-primary {
    background: var(--accent-primary);
    color: #fff;
    box-shadow: none;
}

.btn-primary:hover {
    background: #3367d6; /* Slightly darker Google Blue */
    box-shadow: var(--shadow-glass);
    transform: translateY(-1px);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-glass-hover);
    color: var(--accent-primary);
}

.btn-outline:hover {
    background: rgba(66, 133, 244, 0.05); /* Slight blue tint */
    border-color: var(--accent-primary);
    transform: none;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: var(--small-font);
}

/* --- Navigation --- */
.header {
    width: 100%;
    position: fixed;
    top: 0;
    left: 0;
    z-index: var(--z-fixed);
    transition: 0.4s;
    background: transparent;
}

.header.scroll-header {
    background: hsla(var(--hue-color), 20%, 6%, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-glass);
    box-shadow: 0 4px 20px hsla(0,0%,0%,0.2);
}

/* Always blurred header on mobile and mid-size */
@media screen and (max-width: 967px) {
    .header {
        background: hsla(var(--hue-color), 20%, 6%, 0.8);
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
        border-bottom: 1px solid var(--border-glass);
    }
}

.nav-container {
    height: 80px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-accent);
    font-size: 1.8rem;
    font-weight: var(--font-bold);
    letter-spacing: 1px;
    display: flex;
    align-items: center;
}

.logo-text-short, .logo-text-full {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    transition: all 0.4s ease;
    display: inline-block;
    white-space: nowrap;
    overflow: hidden;
    vertical-align: middle;
    text-overflow: ellipsis;
}

/* Default state (top of page): Show PC */
.logo-text-short {
    opacity: 1;
    max-width: 50px;
    transform: scale(1);
}

.logo-text-full {
    opacity: 0;
    max-width: 0;
    transform: scale(0.8);
    margin-left: 0;
}

/* Scrolled state: Show Param Chotaliya */
.logo.scrolled .logo-text-short {
    opacity: 0;
    max-width: 0;
    transform: scale(0.8);
}

.logo.scrolled .logo-text-full {
    opacity: 1;
    max-width: 300px;
    transform: scale(1);
    margin-left: 5px; /* slight spacing adjustment if needed */
}

.nav-list {
    display: flex;
    gap: 2rem;
}

.nav-link {
    font-weight: var(--font-medium);
    font-size: var(--small-font);
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-secondary);
    position: relative;
    padding-bottom: 5px;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0%;
    height: 2px;
    background: var(--accent-gradient);
    transition: 0.3s;
}

.nav-link:hover, .active-link {
    color: var(--text-primary);
}

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

.nav-btns {
    display: flex;
    align-items: center;
    gap: 1rem;
    position: relative;
    z-index: 105;
}

.nav-toggle, .nav-close {
    display: none;
}

/* Mobile Nav */
@media screen and (max-width: 967px) {
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        max-width: 100%;
        height: 100vh;
        background: var(--bg-main);
        border-left: none;
        padding: 4rem 2rem;
        transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        z-index: var(--z-fixed);
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
    }

    .nav-menu.show-menu {
        right: 0;
    }

    .nav-list {
        flex-direction: column;
        row-gap: 2rem;
        text-align: center;
    }

    .nav-link {
        font-size: var(--h3-font);
    }

    .nav-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
        cursor: pointer;
        color: var(--text-primary);
        background: hsla(0, 0%, 100%, 0.05);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        border: 1px solid var(--border-glass);
        border-radius: 50%;
        transition: 0.3s;
    }

    .nav-toggle:hover {
        background: var(--accent-gradient);
        color: #fff;
        border-color: var(--accent-primary);
        box-shadow: var(--shadow-glow);
    }
}

/* --- Hero Section --- */
.home-container {
    padding-top: 5rem;
    align-items: center;
    min-height: 100vh;
}

/* Default mobile/tablet layout: stack and center text */
@media screen and (max-width: 967px) {
    .home-data {
        text-align: center;
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    
    .home-buttons {
        justify-content: center;
    }

    .home-description {
        margin-left: auto;
        margin-right: auto;
    }
}

/* Desktop layout: side by side */
@media screen and (min-width: 968px) {
    .home-container {
        grid-template-columns: 1fr 1fr;
        gap: 4rem;
    }
}

.home-greeting {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.35rem 0.9rem;
    border-radius: 20px;
    background: var(--border-glass);
    border: 1px solid var(--border-glass-hover);
    color: var(--accent-primary);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 1.2px;
    text-transform: uppercase;
    margin-bottom: 0.75rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.greeting-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--accent-primary);
    box-shadow: 0 0 8px var(--accent-primary);
    animation: pulse-dot 2s infinite ease-in-out;
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.4; transform: scale(0.85); }
}

.home-title {
    font-size: clamp(2.2rem, 5vw, 3.5rem);
    font-weight: 700;
    line-height: 1.15;
    margin-bottom: 0.75rem;
    background: linear-gradient(135deg, var(--text-primary) 30%, var(--accent-primary) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    display: block;
    letter-spacing: -0.5px;
}

.home-subtitle {
    font-size: clamp(1.2rem, 2.5vw, 1.5rem);
    font-weight: 600;
    color: var(--accent-primary);
    margin-bottom: 1.25rem;
    height: auto;
    min-height: auto;
    line-height: 1.35;
    display: block;
}

.home-description {
    max-width: 520px;
    font-size: 1rem;
    line-height: 1.7;
    margin-bottom: 2rem;
    color: var(--text-secondary);
}

.home-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.home-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    perspective: 1000px;
}

.hero-card {
    width: 100%;
    max-width: 320px;
    height: 420px;
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: var(--bg-hero-card);
    box-shadow: var(--shadow-glow);
    transform-style: preserve-3d;
}

.hero-card > .card-inner {
    transform: translateZ(30px);
}

@keyframes float-card {
    0%, 100% { transform: translateY(0) rotateX(5deg) rotateY(0deg); }
    50% { transform: translateY(-6px) rotateX(-5deg) rotateY(10deg); }
}

.profile-circle {
    width: 220px;
    height: 220px;
    border-radius: 50%;
    background: var(--accent-gradient);
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 auto var(--mb-1-5);
    box-shadow: inset 0 0 20px rgba(0,0,0,0.5);
    border: 4px solid var(--bg-panel);
    overflow: hidden; /* Ensure image obeys circle */
}

.profile-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.profile-initial {
    font-size: 5rem;
    font-family: var(--font-accent);
    color: #fff;
    font-weight: var(--font-bold);
    text-shadow: 2px 2px 10px rgba(0,0,0,0.3);
}

.tech-stack-mini {
    display: flex;
    gap: 1rem;
    margin-top: var(--mb-1);
    font-size: 1.5rem;
    color: var(--text-secondary);
}

.tech-stack-mini i {
    transition: 0.3s;
}

.tech-stack-mini img.tech-stack-icon {
    height: 1.5rem;
    width: auto;
    transition: 0.3s;
    cursor: pointer;
}

.tech-stack-mini .tooltip-container:hover i,
.tech-stack-mini .tooltip-container:hover img {
    color: var(--accent-primary);
    transform: translateY(-5px) scale(1.2);
}

/* Tooltip Styles */
.tooltip-container {
    position: relative;
    display: inline-flex;
    justify-content: center;
}

.tooltip-text {
    visibility: hidden;
    background-color: hsla(240, 20%, 10%, 0.95);
    color: #ffffff;
    text-align: center;
    border-radius: 6px;
    padding: 8px 14px;
    position: absolute;
    z-index: 100;
    bottom: 150%;
    left: 50%;
    transform: translateX(-50%);
    opacity: 0;
    transition: opacity 0.3s, bottom 0.3s;
    font-size: 0.9rem;
    font-weight: 500;
    white-space: nowrap;
    box-shadow: 0 4px 15px rgba(0,0,0,0.5);
    border: 1px solid rgba(255,255,255,0.1);
}

.tooltip-text::after {
    content: "";
    position: absolute;
    top: 100%;
    left: 50%;
    margin-left: -6px;
    border-width: 6px;
    border-style: solid;
    border-color: hsla(240, 20%, 10%, 0.95) transparent transparent transparent;
}

.tooltip-container:hover .tooltip-text {
    visibility: visible;
    opacity: 1;
    bottom: 120%;
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    animation: bounce 2s infinite;
}

.scroll-indicator a {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    font-size: var(--smaller-font);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.mouse {
    width: 25px;
    height: 40px;
    border: 2px solid var(--text-secondary);
    border-radius: 20px;
    position: relative;
}

.mouse::before {
    content: '';
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 4px;
    background: var(--text-secondary);
    border-radius: 50%;
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0% { transform: translate(-50%, 0); opacity: 1; }
    100% { transform: translate(-50%, 15px); opacity: 0; }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0) translateX(-50%); }
    40% { transform: translateY(-10px) translateX(-50%); }
    60% { transform: translateY(-5px) translateX(-50%); }
}

/* --- About Section --- */
.about-container {
    align-items: center;
}

@media screen and (min-width: 968px) {
    .about-container {
        grid-template-columns: 1fr 1fr;
        gap: 4rem;
    }
}

.about-img-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 30px;
    overflow: hidden;
    position: relative;
    aspect-ratio: 1;
}

.about-img-wrapper::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--accent-gradient);
    opacity: 0.2;
    z-index: 1;
}

.about-img {
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 8rem;
    color: var(--accent-primary);
    background: transparent;
    z-index: 2;
    animation: float-card 6s ease-in-out infinite;
}

.about-description {
    color: var(--text-secondary);
    margin-bottom: var(--mb-2-5);
    font-size: var(--normal-font);
}

.about-info {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-bottom: var(--mb-2-5);
}

.info-box {
    padding: 1rem 0.5rem;
}

.info-icon {
    font-size: 1.5rem;
    color: var(--accent-primary);
    margin-bottom: var(--mb-0-5);
}

.info-title {
    font-size: var(--small-font);
    font-weight: var(--font-medium);
}

.info-subtitle {
    font-size: var(--smaller-font);
    color: var(--text-muted);
}

@media screen and (max-width: 576px) {
    .about-info {
        grid-template-columns: repeat(2, 1fr);
    }
}

 /* --- Skills Section --- */
.skills-icon-grid-wrapper {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
    max-width: 900px;
    margin: 0 auto;
}

.skills-category {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.skills-category-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.skills-category-title i {
    color: var(--accent-primary);
    font-size: 0.95rem;
}

.skills-icon-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.skill-icon-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    width: 92px;
    height: 92px;
    padding: 0.6rem 0.3rem;
    border-radius: 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    cursor: default;
    transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
    box-shadow: 0 2px 12px rgba(0,0,0,0.12);
}

.skill-icon-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 8px 28px rgba(0,0,0,0.25), 0 0 0 1px var(--accent-primary);
    border-color: var(--accent-primary);
}

.skill-icon-img {
    width: 34px;
    height: 34px;
    object-fit: contain;
}

.skill-devicon {
    font-size: 34px;
    line-height: 1;
}

/* GitHub icon adapts to theme */
.theme-icon {
    color: var(--text-primary);
}

.skill-icon-label {
    font-size: 0.68rem;
    font-weight: 500;
    color: var(--text-muted);
    text-align: center;
    letter-spacing: 0.1px;
    white-space: normal;
    word-break: normal;
    line-height: 1.15;
    max-width: 100%;
    overflow-wrap: break-word;
}

/* keep old selectors for any fallback references */
.skills-group { display: flex; flex-direction: column; gap: 1.5rem; }
.skills-data { display: flex; align-items: flex-start; gap: 0.75rem; }
.skills-data i { font-size: 1rem; color: var(--accent-secondary); margin-top: 4px; }
.skills-name { font-size: var(--normal-font); font-weight: var(--font-medium); line-height: 18px; }
.skills-level { font-size: var(--smaller-font); color: var(--text-muted); }

/* --- Projects Section --- */
.projects-container {
    grid-template-columns: 1fr;
    gap: 2rem;
}

@media screen and (min-width: 768px) {
    .projects-container {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media screen and (min-width: 1024px) {
    .projects-container {
        grid-template-columns: repeat(2, 1fr);
    }
}


/* --- Project Card --- */
.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: 16px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1),
                box-shadow 0.35s cubic-bezier(0.4, 0, 0.2, 1),
                border-color 0.35s ease;
    box-shadow: var(--shadow-glass);
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
    border-color: var(--card-accent, var(--accent-primary));
}

/* --- Project Header (accent strip with icon + links) --- */
.project-header {
    background: linear-gradient(135deg,
        color-mix(in srgb, var(--card-accent, var(--accent-primary)) 15%, var(--bg-card)),
        color-mix(in srgb, var(--card-accent, var(--accent-primary)) 5%, var(--bg-card)));
    padding: 1.25rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-glass);
    position: relative;
}

.project-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--card-accent, var(--accent-primary));
    transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.project-card:hover .project-header::after {
    width: 100%;
}

.project-header-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: color-mix(in srgb, var(--card-accent, var(--accent-primary)) 15%, transparent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    color: var(--card-accent, var(--accent-primary));
    transition: transform 0.3s ease, background 0.3s ease;
}

.project-card:hover .project-header-icon {
    transform: scale(1.1) rotate(-5deg);
    background: color-mix(in srgb, var(--card-accent, var(--accent-primary)) 25%, transparent);
}

/* --- Project Link Buttons --- */
.project-links {
    display: flex;
    gap: 0.6rem;
}

.project-link-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    color: var(--text-secondary);
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    transition: all 0.25s ease;
    cursor: pointer;
}

.project-link-btn:hover {
    color: #fff;
    background: var(--card-accent, var(--accent-primary));
    border-color: var(--card-accent, var(--accent-primary));
    transform: translateY(-2px);
    box-shadow: 0 4px 12px color-mix(in srgb, var(--card-accent, var(--accent-primary)) 40%, transparent);
}

/* --- Project Body --- */
.project-body {
    padding: 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.project-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
    transition: color 0.2s ease;
}

.project-card:hover .project-title {
    color: var(--card-accent, var(--accent-primary));
}

.project-bullets {
    list-style: none;
    padding: 0;
    margin-bottom: 1.25rem;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.project-bullets li {
    font-size: var(--small-font);
    color: var(--text-secondary);
    position: relative;
    padding-left: 1.25rem;
    line-height: 1.55;
}

.project-bullets li::before {
    content: "▹";
    position: absolute;
    left: 0;
    top: 0;
    color: var(--card-accent, var(--accent-primary));
    font-weight: bold;
}

.project-tech {
    display: flex;
    gap: 0.4rem;
    flex-wrap: wrap;
    margin-top: auto;
    padding-top: 1rem;
    border-top: 1px solid var(--border-glass);
}

.project-tech span {
    font-size: 0.75rem;
    padding: 0.2rem 0.6rem;
    background: color-mix(in srgb, var(--card-accent, var(--accent-primary)) 8%, var(--bg-main));
    border: 1px solid color-mix(in srgb, var(--card-accent, var(--accent-primary)) 15%, transparent);
    border-radius: 20px;
    color: var(--text-secondary);
    font-weight: 500;
    letter-spacing: 0.2px;
    transition: all 0.2s ease;
}

.project-card:hover .project-tech span {
    background: color-mix(in srgb, var(--card-accent, var(--accent-primary)) 12%, var(--bg-main));
    border-color: color-mix(in srgb, var(--card-accent, var(--accent-primary)) 25%, transparent);
    color: var(--card-accent, var(--accent-primary));
}

/* --- Horizontal Project Card --- */
@media screen and (min-width: 768px) {
    .project-card.project-card-horizontal {
        flex-direction: row;
        grid-column: 1 / -1;
    }

    .project-card.project-card-horizontal .project-header {
        border-bottom: none;
        border-right: 1px solid var(--border-glass);
        flex-direction: column;
        justify-content: center;
        padding: 2rem;
        min-width: 140px;
    }

    .project-card.project-card-horizontal .project-header::after {
        bottom: 0;
        right: 0;
        width: 2px;
        height: 0;
        left: auto;
        transition: height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .project-card.project-card-horizontal:hover .project-header::after {
        width: 2px;
        height: 100%;
    }
    
    .project-card.project-card-horizontal .project-links {
        flex-direction: column;
        margin-top: 1.5rem;
    }
}

/* --- Light Theme Project Overrides --- */
body.light-theme .project-card {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

body.light-theme .project-card:hover {
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
}

body.light-theme .project-link-btn {
    background: var(--bg-panel);
    border-color: var(--border-glass);
    color: var(--text-secondary);
}

body.light-theme .project-link-btn:hover {
    color: #fff;
}

body.light-theme .project-tech span {
    background: color-mix(in srgb, var(--card-accent, var(--accent-primary)) 6%, #f8f9fa);
    border-color: color-mix(in srgb, var(--card-accent, var(--accent-primary)) 15%, #e0e0e0);
    color: var(--text-secondary);
}

body.light-theme .project-card:hover .project-tech span {
    background: color-mix(in srgb, var(--card-accent, var(--accent-primary)) 10%, #f0f4ff);
    color: var(--card-accent, var(--accent-primary));
}

/* --- Contact Section --- */
.contact-container {
    padding-bottom: 3rem;
    display: grid;
    gap: 3rem;
}

@media screen and (min-width: 968px) {
    .contact-container {
        grid-template-columns: 1fr 1fr;
        max-width: 1000px;
        margin: 0 auto;
        column-gap: 4rem;
        align-items: stretch;
    }
}

.contact-title {
    text-align: center;
    font-size: var(--h3-font);
    margin-bottom: var(--mb-1-5);
}

.contact-info-cards {
    display: grid;
    gap: 1rem;
    grid-template-columns: 1fr;
    max-width: 350px;
    margin: 0 auto;
    height: 100%;
    align-content: flex-start;
}

@media screen and (min-width: 768px) {
    .contact-info-cards {
        grid-template-columns: repeat(2, 1fr);
        max-width: 600px;
        gap: 1.5rem;
    }
}

.contact-card-icon {
    font-size: 2rem;
    color: var(--accent-primary);
    margin-bottom: var(--mb-0-5);
}

.contact-card-title, .contact-card-data {
    font-size: var(--small-font);
}

.contact-card-title {
    font-weight: var(--font-medium);
}

.contact-card-data {
    display: block;
    margin-bottom: var(--mb-1);
    color: var(--text-secondary);
}

.contact-button {
    color: var(--text-primary);
    font-size: var(--small-font);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    column-gap: 0.25rem;
}

.contact-button:hover {
    color: var(--accent-primary);
}

.contact-button:hover .contact-button-icon {
    transform: translateX(0.25rem);
}

.contact-button-icon {
    font-size: 1rem;
    transition: 0.3s;
}

/* Stretched link to make whole card clickable without breaking Vanilla Tilt */
.extended-link::after {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 100;
    content: "";
}

.contact-form-container {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.contact-form {
    width: 100%;
    max-width: 600px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    height: 100%;
    flex: 1;
}

.contact-form-div {
    position: relative;
    margin-bottom: var(--mb-2);
}

.contact-form-div.contact-form-area {
    display: flex;
    flex-direction: column;
    flex: 1;
    margin-bottom: 0;
}

.contact-form-area .contact-form-input {
    flex: 1;
    resize: none;
}

.contact-form-input {
    width: 100%;
    background: color-mix(in srgb, var(--text-primary) 5%, transparent); /* Fluent background */
    border: none;
    border-bottom: 2px solid color-mix(in srgb, var(--text-primary) 20%, transparent);
    color: var(--text-primary);
    outline: none;
    border-radius: 4px 4px 0 0; /* Fluent top-only rounded corners */
    padding: 1.5rem 1.25rem 0.5rem 1.25rem;
    font-family: var(--font-body);
    font-size: var(--normal-font);
    transition: all 0.2s ease;
}

.contact-form-input:focus {
    border-bottom-color: var(--accent-primary);
    background: color-mix(in srgb, var(--text-primary) 8%, transparent);
    box-shadow: none;
}

.contact-form-tag {
    position: absolute;
    top: 50%;
    left: 1.25rem;
    transform: translateY(-50%);
    font-size: var(--normal-font);
    color: var(--text-secondary);
    transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
}

.contact-form-input:placeholder-shown::placeholder {
    color: transparent;
}

.contact-form-input:focus::placeholder {
    color: transparent; /* Keep placeholder hidden to maintain ultra-clean look */
}

.contact-form-input:focus ~ .contact-form-tag,
.contact-form-input:not(:placeholder-shown) ~ .contact-form-tag {
    top: 0.5rem;
    transform: translateY(0);
    font-size: 0.75rem;
    color: var(--accent-primary);
    font-weight: 500;
    letter-spacing: 0.5px;
}

.contact-form-area {
    height: auto;
}

.contact-form-area .contact-form-input {
    height: 10rem;
    padding-top: 1.75rem;
    resize: none;
}

.contact-form-area .contact-form-tag {
    top: 1.25rem;
    transform: none;
}

.contact-form-area .contact-form-input:focus ~ .contact-form-tag,
.contact-form-area .contact-form-input:not(:placeholder-shown) ~ .contact-form-tag {
    top: 0.5rem;
}


/* --- Footer --- */
.footer {
    padding: 2rem 0;
    text-align: center;
    border-radius: 40px 40px 0 0;
    border-bottom: none;
    border-left: none;
    border-right: none;
}

.footer-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
}

@media screen and (min-width: 768px) {
    .footer-container {
        flex-direction: row;
        justify-content: space-between;
    }
}

.footer-title {
    font-family: var(--font-accent);
    color: var(--text-primary);
}

.footer-list {
    display: flex;
    justify-content: center;
    column-gap: 1.5rem;
}

.footer-link {
    color: var(--text-secondary);
}

.footer-link:hover {
    color: var(--accent-primary);
}

.footer-social {
    display: flex;
    justify-content: center;
    column-gap: 1.25rem;
}

.footer-social-link {
    background-color: var(--accent-gradient);
    color: #fff;
    font-size: 1.25rem;
    padding: 0.5rem;
    border-radius: 0.5rem;
    display: inline-flex;
}

.footer-social-link:hover {
    background-color: var(--accent-gradient-hover);
    transform: translateY(-3px);
}

.footer-copy {
    display: block;
    margin-top: 2rem;
    color: var(--text-muted);
    font-size: var(--smaller-font);
}

@media screen and (min-width: 768px) {
    .footer-copy {
        margin-top: 0;
        position: absolute;
        bottom: 2rem;
        left: 50%;
        transform: translateX(-50%);
    }
    .footer-container {
        position: relative;
    }
}

/* --- Scrollbar --- */
::-webkit-scrollbar {
    width: 0.6rem;
    background-color: var(--bg-main);
}

::-webkit-scrollbar-thumb {
    background-color: hsla(var(--hue-color), 20%, 30%, 1);
    border-radius: 0.5rem;
}

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

/* --- Scroll Up --- */
.scrollup {
    position: fixed;
    right: 1.5rem;
    bottom: -30%;
    background-color: var(--bg-panel);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    opacity: 0.8;
    padding: 0.5rem 0.6rem;
    border-radius: 50%;
    z-index: 99; /* High enough to float above content, but under modals/header */
    transition: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--border-glass);
    box-shadow: var(--shadow-glass);
}

.scrollup:hover {
    background-color: var(--accent-primary);
    opacity: 1;
    transform: translateY(-5px);
    box-shadow: var(--shadow-glow);
}

.scrollup-icon {
    font-size: 1.5rem;
    color: var(--text-primary);
}

.scrollup:hover .scrollup-icon {
    color: #fff;
}

.show-scroll {
    bottom: 3rem;
}

/* --- Reveal Animation --- */
.reveal {
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.8s ease;
}

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

/* --- Global Responsive Adjustments --- */
/* For small devices (350px and below) */
@media screen and (max-width: 350px) {
    .container {
        padding: 0 1rem;
    }
    
    .logo {
        font-size: 1.2rem;
    }
    
    .logo.scrolled .logo-text-full {
        max-width: 140px;
    }
    
    .nav-btns {
        gap: 0.5rem;
    }
    
    .hero-card {
        width: 100%;
        height: auto;
        padding: 2rem 1rem;
    }
    
    .home-buttons {
        flex-direction: column;
        align-items: center;
    }
    
}

/* For medium devices (576px and below) */
@media screen and (max-width: 576px) {
    .logo {
        font-size: 1.4rem;
    }
    
    .logo.scrolled .logo-text-full {
        max-width: 180px;
    }

    .home-subtitle {
        font-size: 1.15rem;
        height: auto;
        min-height: auto;
    }
    
    .project-img {
        font-size: 3rem;
    }
    
    /* Ensure tooltips behave nicely on touch devices */
    .tooltip-text {
        font-size: 0.75rem;
        padding: 6px 10px;
        white-space: normal;
        width: max-content;
        max-width: 120px;
    }
    
    .about-info {
        grid-template-columns: 1fr; 
        gap: 1.5rem;
    }
    
    .skills-icon-grid {
        gap: 0.75rem;
    }

    .skill-icon-card {
        width: 76px;
        height: 76px;
    }
}


/* For larger tablets (768px and up) */
@media screen and (min-width: 768px) {
    .projects-container {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .skills-icon-grid-wrapper {
        max-width: 100%;
    }
    
    .section {
        padding: 7rem 0 2rem;
    }
}

/* For large desktops (992px and up) */
@media screen and (min-width: 992px) {
    .container {
        margin-left: auto;
        margin-right: auto;
    }
    
    .nav-container {
        column-gap: 3rem;
    }
}