/* ==========================================================================
   Sameer Soni Portfolio Stylesheet
   Design Paradigm: Premium Cyber-Dark / Glassmorphism / Fluid Typography
   ========================================================================== */

/* --- Design Tokens & Variables --- */
:root {
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-headings: 'Outfit', sans-serif;
    --font-mono: 'Fira Code', 'Courier New', Courier, monospace;

    /* Harmonious HSL Space Palette */
    --color-bg-deep: hsl(224, 71%, 4%);        /* Cosmic void */
    --color-bg-dark: hsl(222, 47%, 7%);        /* Dark card base */
    --color-bg-card: hsla(220, 40%, 12%, 0.65); /* Glassmorphic base */
    --color-bg-card-hover: hsla(220, 40%, 16%, 0.8);
    --color-border: hsla(217, 30%, 20%, 0.5);   /* Subtly glowing borders */
    --color-border-glow: hsla(245, 82%, 65%, 0.3);

    /* Text hierarchy */
    --color-text-white: hsl(0, 0%, 100%);
    --color-text-primary: hsl(210, 40%, 96%);
    --color-text-muted: hsl(215, 20%, 65%);
    --color-text-dim: hsl(217, 19%, 45%);

    /* Premium Accents */
    --color-accent-indigo: hsl(245, 82%, 65%);
    --color-accent-indigo-glow: hsla(245, 82%, 65%, 0.15);
    --color-accent-cyan: hsl(188, 86%, 53%);
    --color-accent-cyan-glow: hsla(188, 86%, 53%, 0.15);
    --color-accent-purple: hsl(270, 76%, 58%);
    --color-accent-emerald: hsl(150, 84%, 48%);
    --color-accent-amber: hsl(38, 92%, 50%);
    --color-accent-rose: hsl(350, 89%, 60%);

    /* Gradient definitions */
    --gradient-primary: linear-gradient(135deg, var(--color-accent-indigo) 0%, var(--color-accent-cyan) 100%);
    --gradient-card: linear-gradient(135deg, hsla(222, 47%, 8%, 0.8) 0%, hsla(220, 40%, 12%, 0.8) 100%);
    --gradient-glow-1: radial-gradient(circle, hsla(245, 82%, 65%, 0.15) 0%, transparent 60%);
    --gradient-glow-2: radial-gradient(circle, hsla(188, 86%, 53%, 0.12) 0%, transparent 60%);

    /* Spacing & Transitions */
    --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-bounce: all 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
    --border-radius-sm: 8px;
    --border-radius-md: 16px;
    --border-radius-lg: 24px;
    
    /* Layout */
    --max-width: 1200px;
    --header-height: 80px;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* --- Custom Scrollbar --- */
::-webkit-scrollbar {
    width: 10px;
}
::-webkit-scrollbar-track {
    background: var(--color-bg-deep);
}
::-webkit-scrollbar-thumb {
    background: hsl(220, 20%, 20%);
    border-radius: var(--border-radius-sm);
    border: 2px solid var(--color-bg-deep);
}
::-webkit-scrollbar-thumb:hover {
    background: var(--color-accent-indigo);
}

/* --- Layout Containers --- */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 2rem;
}

/* --- Floating Space Glow Orbs --- */
.glow-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
    z-index: -1;
    pointer-events: none;
}

.orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.6;
}

.orb-1 {
    width: 500px;
    height: 500px;
    background: var(--gradient-glow-1);
    top: -10%;
    right: -5%;
    animation: floatOrb 25s infinite alternate ease-in-out;
}

.orb-2 {
    width: 600px;
    height: 600px;
    background: var(--gradient-glow-2);
    top: 40%;
    left: -15%;
    animation: floatOrb 30s infinite alternate-reverse ease-in-out;
}

.orb-3 {
    width: 450px;
    height: 450px;
    background: radial-gradient(circle, hsla(270, 76%, 58%, 0.1) 0%, transparent 60%);
    bottom: 5%;
    right: -10%;
    animation: floatOrb 20s infinite alternate ease-in-out;
}

@keyframes floatOrb {
    0% {
        transform: translate(0, 0) scale(1);
    }
    50% {
        transform: translate(50px, -40px) scale(1.1);
    }
    100% {
        transform: translate(-30px, 60px) scale(0.9);
    }
}

/* --- Typography Utilities --- */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-headings);
    color: var(--color-text-white);
    font-weight: 700;
    line-height: 1.25;
}

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

ul {
    list-style: none;
}

strong {
    color: var(--color-text-white);
    font-weight: 600;
}

/* --- Shared Components & Section Headers --- */
.section-header {
    margin-bottom: 4rem;
    position: relative;
}

.section-tag {
    font-family: var(--font-mono);
    color: var(--color-accent-cyan);
    font-size: 0.9rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    display: block;
    margin-bottom: 0.5rem;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: -1px;
}

.section-header .line {
    width: 60px;
    height: 4px;
    background: var(--gradient-primary);
    margin-top: 1rem;
    border-radius: 2px;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 0.85rem 1.8rem;
    font-family: var(--font-headings);
    font-weight: 600;
    font-size: 1rem;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: var(--transition-bounce);
    border: none;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--color-bg-deep);
    box-shadow: 0 4px 20px hsla(245, 82%, 65%, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 26px hsla(188, 86%, 53%, 0.4);
}

.btn-primary:active {
    transform: translateY(-1px);
}

.btn-secondary {
    background: hsla(220, 20%, 20%, 0.3);
    color: var(--color-text-white);
    border: 1px solid var(--color-border);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    transform: translateY(-3px);
    border-color: var(--color-accent-indigo);
    background: hsla(220, 20%, 20%, 0.6);
}

.btn-secondary:active {
    transform: translateY(-1px);
}

/* --- Header & Navigation --- */
.header {
    height: var(--header-height);
    width: 100%;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 100;
    background: rgba(11, 15, 25, 0.6);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    transition: var(--transition-smooth);
}

.header.scrolled {
    height: 70px;
    background: rgba(11, 15, 25, 0.85);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.nav-container {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 2rem;
}

.logo {
    font-family: var(--font-headings);
    font-weight: 800;
    font-size: 1.5rem;
    color: var(--color-text-white);
    display: flex;
    align-items: center;
    letter-spacing: -0.5px;
}

.logo-bracket {
    color: var(--color-accent-cyan);
    font-family: var(--font-mono);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text-muted);
}

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

.btn-nav {
    padding: 0.5rem 1.2rem;
    border: 1px solid var(--color-accent-indigo);
    border-radius: var(--border-radius-sm);
    color: var(--color-text-white);
    background: var(--color-accent-indigo-glow);
}

.btn-nav:hover {
    background: var(--color-accent-indigo);
    color: var(--color-bg-deep);
    box-shadow: 0 0 15px var(--color-accent-indigo-glow);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--color-text-white);
    font-size: 1.8rem;
    cursor: pointer;
}

/* --- Mobile Drawer Menu --- */
.mobile-drawer {
    position: fixed;
    top: 0;
    right: -100%;
    width: 300px;
    height: 100vh;
    background: var(--color-bg-dark);
    z-index: 1000;
    border-left: 1px solid var(--color-border);
    box-shadow: -10px 0 30px rgba(0, 0, 0, 0.5);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 3rem;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.mobile-drawer.active {
    right: 0;
}

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

.close-drawer-btn {
    background: none;
    border: none;
    color: var(--color-text-white);
    font-size: 1.8rem;
    cursor: pointer;
}

.drawer-links {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.drawer-link {
    font-size: 1.2rem;
    font-weight: 500;
    color: var(--color-text-muted);
}

.drawer-link:hover {
    color: var(--color-text-white);
    padding-left: 5px;
}

.btn-drawer {
    display: block;
    text-align: center;
    padding: 0.8rem;
    background: var(--color-accent-indigo);
    color: var(--color-bg-deep);
    border-radius: var(--border-radius-sm);
    font-weight: 600;
}

/* --- Hero Section --- */
.hero-section {
    padding: calc(var(--header-height) + 4rem) 0 6rem;
    min-height: 95vh;
    display: flex;
    align-items: center;
}

.hero-container {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-content {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.hero-location {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--color-accent-indigo-glow);
    border: 1px solid rgba(80, 70, 229, 0.2);
    padding: 0.4rem 1rem;
    border-radius: 50px;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--color-accent-cyan);
    margin-bottom: 1.5rem;
}

.hero-title {
    font-size: 3.8rem;
    font-weight: 800;
    letter-spacing: -2px;
    margin-bottom: 1rem;
    line-height: 1.1;
    background: linear-gradient(to right, var(--color-text-white) 60%, var(--color-text-muted));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 1.8rem;
    color: var(--color-text-muted);
    font-weight: 500;
    margin-bottom: 1.5rem;
}

#dynamic-text {
    color: var(--color-accent-cyan);
    font-weight: 700;
    border-right: 2px solid var(--color-accent-cyan);
    padding-right: 4px;
    animation: blink 0.75s step-end infinite;
}

@keyframes blink {
    from, to { border-color: transparent }
    50% { border-color: var(--color-accent-cyan); }
}

.hero-description {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    margin-bottom: 2.5rem;
    max-width: 580px;
}

.hero-description strong {
    color: var(--color-text-white);
}

.hero-actions {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.hero-socials {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.hero-socials a {
    color: var(--color-text-muted);
    font-size: 1.8rem;
    transition: var(--transition-bounce);
}

.hero-socials a:hover {
    color: var(--color-accent-cyan);
    transform: translateY(-4px) scale(1.1);
}

.email-copy-btn {
    position: relative;
    background: var(--color-bg-dark);
    border: 1px solid var(--color-border);
    border-radius: 50px;
    padding: 0.5rem 1.2rem;
    display: flex;
    align-items: center;
    gap: 0.6rem;
    color: var(--color-text-primary);
    cursor: pointer;
    font-size: 0.9rem;
    transition: var(--transition-smooth);
}

.email-copy-btn:hover {
    border-color: var(--color-accent-indigo);
    box-shadow: 0 0 15px var(--color-accent-indigo-glow);
}

.email-copy-btn i {
    font-size: 1.1rem;
    color: var(--color-accent-indigo);
}

.email-copy-btn .tooltip {
    position: absolute;
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%) translateY(5px);
    background: var(--color-accent-indigo);
    color: var(--color-bg-deep);
    padding: 0.3rem 0.8rem;
    border-radius: var(--border-radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition-bounce);
}

.email-copy-btn:hover .tooltip {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* --- Terminal Visual Mockup --- */
.hero-visual {
    display: flex;
    justify-content: flex-end;
}

.terminal-mockup {
    width: 100%;
    max-width: 480px;
    background: #090d16;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5),
                0 0 40px rgba(79, 70, 229, 0.05);
    overflow: hidden;
}

.terminal-header {
    background: #111827;
    padding: 0.75rem 1.2rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    border-bottom: 1px solid var(--color-border);
    position: relative;
}

.terminal-header .dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.terminal-header .dot.red { background-color: #ef4444; }
.terminal-header .dot.yellow { background-color: #f59e0b; }
.terminal-header .dot.green { background-color: #10b981; }

.terminal-title {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--color-text-dim);
    margin-left: 1rem;
}

.terminal-body {
    padding: 1.5rem;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: #cbd5e1;
    overflow-x: auto;
}

.terminal-line {
    margin-bottom: 0.75rem;
    color: #e2e8f0;
}

.t-prompt {
    color: var(--color-accent-cyan);
    margin-right: 0.5rem;
}

.terminal-code {
    background: #060910;
    padding: 1rem;
    border-radius: var(--border-radius-sm);
    margin: 0.75rem 0;
    white-space: pre;
    color: #94a3b8;
    line-height: 1.5;
    border-left: 2px solid var(--color-accent-indigo);
}

.c-keyword { color: #f472b6; }
.c-string { color: #38bdf8; }
.c-type { color: #fbbf24; }
.c-func { color: #34d399; }
.c-number { color: #c084fc; }

.terminal-output {
    color: #64748b;
    margin-bottom: 0.5rem;
    font-size: 0.85rem;
}

.cursor {
    animation: blink 0.75s infinite;
}

/* --- About / Core Philosophy Section --- */
.about-section {
    padding: 8rem 0;
    background: linear-gradient(180deg, var(--color-bg-deep) 0%, rgba(17, 24, 39, 0.4) 100%);
    border-top: 1px solid var(--color-border);
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.about-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    padding: 2.5rem 2rem;
    backdrop-filter: blur(12px);
    transition: var(--transition-bounce);
}

.about-card:hover {
    transform: translateY(-8px);
    border-color: var(--color-accent-cyan);
    background: var(--color-bg-card-hover);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.3),
                0 0 20px rgba(6, 182, 212, 0.05);
}

.card-icon {
    width: 50px;
    height: 50px;
    border-radius: var(--border-radius-sm);
    background: var(--color-accent-indigo-glow);
    color: var(--color-accent-indigo);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    margin-bottom: 1.5rem;
    transition: var(--transition-bounce);
}

.about-card:hover .card-icon {
    background: var(--gradient-primary);
    color: var(--color-bg-deep);
    transform: rotate(10deg) scale(1.1);
}

.about-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.about-card p {
    color: var(--color-text-muted);
    font-size: 0.95rem;
}

/* --- Experience Timeline Section --- */
.experience-section {
    padding: 8rem 0;
    border-top: 1px solid var(--color-border);
}

.timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
    padding-left: 2.5rem;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 4px;
    top: 5px;
    bottom: 5px;
    width: 2px;
    background: linear-gradient(to bottom, 
                var(--color-accent-cyan) 0%, 
                var(--color-accent-indigo) 50%, 
                var(--color-border) 100%);
}

.timeline-item {
    position: relative;
    margin-bottom: 4.5rem;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-dot {
    position: absolute;
    left: -2.5rem;
    top: 6px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: var(--color-accent-cyan);
    box-shadow: 0 0 10px var(--color-accent-cyan);
    transform: translateX(-4px);
    transition: var(--transition-smooth);
    z-index: 2;
}

.timeline-item:hover .timeline-dot {
    background-color: var(--color-accent-indigo);
    box-shadow: 0 0 15px var(--color-accent-indigo);
    transform: translateX(-4px) scale(1.5);
}

.timeline-date {
    font-family: var(--font-mono);
    color: var(--color-accent-cyan);
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.timeline-content {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    padding: 2.5rem;
    backdrop-filter: blur(12px);
    transition: var(--transition-smooth);
}

.timeline-content:hover {
    border-color: var(--color-border-glow);
    background: var(--color-bg-card-hover);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
}

.company-badge {
    display: inline-block;
    background: hsla(220, 20%, 20%, 0.4);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    padding: 0.3rem 0.8rem;
    font-family: var(--font-headings);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text-white);
    margin-bottom: 0.8rem;
}

.job-title {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 0.2rem;
}

.job-location {
    color: var(--color-text-dim);
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.job-bullets {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
    margin-bottom: 2rem;
}

.job-bullets li {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    position: relative;
    padding-left: 1.25rem;
}

.job-bullets li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--color-accent-indigo);
    font-weight: bold;
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tech-tags span {
    font-family: var(--font-mono);
    background: rgba(6, 182, 212, 0.05);
    border: 1px solid rgba(6, 182, 212, 0.15);
    color: var(--color-accent-cyan);
    font-size: 0.75rem;
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    transition: var(--transition-smooth);
}

.tech-tags span:hover {
    background: var(--color-accent-cyan);
    color: var(--color-bg-deep);
}

/* --- Dynamic Skills Grid Section --- */
.skills-section {
    padding: 8rem 0;
    background: linear-gradient(180deg, rgba(17, 24, 39, 0.4) 0%, var(--color-bg-deep) 100%);
    border-top: 1px solid var(--color-border);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-bottom: 4rem;
}

.skills-category {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    padding: 2.5rem 2rem;
    backdrop-filter: blur(12px);
    transition: var(--transition-smooth);
}

.skills-category:hover {
    border-color: var(--color-accent-indigo-glow);
    background: var(--color-bg-card-hover);
}

.category-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--color-border);
    padding-bottom: 1rem;
}

.category-header i {
    font-size: 1.4rem;
    color: var(--color-accent-cyan);
}

.category-header h3 {
    font-size: 1.3rem;
}

.skill-items {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.skill-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.skill-name {
    font-size: 0.9rem;
    color: var(--color-text-primary);
    font-weight: 500;
}

.skill-bar {
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 3px;
    overflow: hidden;
}

.skill-progress {
    height: 100%;
    width: 0; /* Animated dynamically by JS */
    background: var(--gradient-primary);
    border-radius: 3px;
    transition: width 1.5s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Core Mindset Badges */
.skills-badges {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    padding: 2rem;
    text-align: center;
    backdrop-filter: blur(10px);
}

.skills-badges h4 {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    margin-bottom: 1.5rem;
}

.badges-wrapper {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.75rem;
}

.badges-wrapper span {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-text-primary);
    background: hsla(220, 20%, 20%, 0.3);
    border: 1px solid var(--color-border);
    padding: 0.4rem 1rem;
    border-radius: 50px;
    transition: var(--transition-bounce);
}

.badges-wrapper span:hover {
    border-color: var(--color-accent-indigo);
    background: var(--color-accent-indigo-glow);
    transform: scale(1.05);
    color: var(--color-text-white);
}

/* --- Publications Section --- */
.publications-section {
    padding: 8rem 0;
    border-top: 1px solid var(--color-border);
}

.publications-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.publication-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    padding: 2.5rem;
    backdrop-filter: blur(12px);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: var(--transition-bounce);
}

.publication-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--gradient-primary);
    opacity: 0;
    transition: var(--transition-smooth);
}

.publication-card:hover {
    transform: translateY(-6px);
    background: var(--color-bg-card-hover);
    border-color: var(--color-accent-cyan-glow);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
}

.publication-card:hover::before {
    opacity: 1;
}

.pub-year {
    font-family: var(--font-mono);
    color: var(--color-accent-cyan);
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 0.8rem;
}

.pub-title {
    font-size: 1.4rem;
    margin-bottom: 1rem;
    line-height: 1.3;
}

.pub-description {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.pub-meta {
    display: flex;
    align-items: center;
    color: var(--color-text-dim);
    font-size: 0.85rem;
    font-family: var(--font-mono);
}

.pub-topic {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--color-text-primary);
}

.pub-topic i {
    color: var(--color-accent-indigo);
}

/* --- Honours, Awards & Education Section --- */
.awards-section {
    padding: 8rem 0;
    border-top: 1px solid var(--color-border);
    background: linear-gradient(180deg, var(--color-bg-deep) 0%, rgba(17, 24, 39, 0.3) 100%);
}

.education-awards-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 4rem;
}

.sub-column {
    display: flex;
    flex-direction: column;
}

/* Education cards */
.education-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    padding: 2rem;
    margin-bottom: 1.5rem;
    backdrop-filter: blur(10px);
    transition: var(--transition-smooth);
}

.education-card:hover {
    border-color: var(--color-accent-indigo-glow);
    background: var(--color-bg-card-hover);
}

.degree-badge {
    display: inline-block;
    background: var(--color-accent-indigo-glow);
    border: 1px solid rgba(80, 70, 229, 0.2);
    color: var(--color-accent-cyan);
    font-size: 0.8rem;
    font-weight: 600;
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    margin-bottom: 0.8rem;
}

.education-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.3rem;
}

.edu-time {
    color: var(--color-accent-cyan);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.edu-details {
    color: var(--color-text-muted);
    font-size: 0.95rem;
}

/* Awards list */
.awards-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.award-item {
    display: flex;
    gap: 1.25rem;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    padding: 1.5rem;
    backdrop-filter: blur(10px);
    transition: var(--transition-smooth);
}

.award-item:hover {
    border-color: var(--color-accent-cyan-glow);
    background: var(--color-bg-card-hover);
}

.award-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--border-radius-sm);
    background: var(--color-accent-cyan-glow);
    color: var(--color-accent-cyan);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    flex-shrink: 0;
}

.award-item:hover .award-icon {
    background: var(--color-accent-cyan);
    color: var(--color-bg-deep);
}

.award-info h4 {
    font-size: 1.1rem;
    margin-bottom: 0.2rem;
}

.award-issuer {
    font-size: 0.8rem;
    color: var(--color-accent-indigo);
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.award-desc {
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

/* --- Contact Section --- */
.contact-section {
    padding: 8rem 0;
    border-top: 1px solid var(--color-border);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 4rem;
}

.contact-info-panel {
    display: flex;
    flex-direction: column;
}

.contact-info-panel h3 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.contact-info-panel > p {
    color: var(--color-text-muted);
    font-size: 1.05rem;
    margin-bottom: 2.5rem;
}

.contact-cards {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    margin-bottom: 2.5rem;
}

.contact-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    padding: 1.25rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 1.25rem;
    position: relative;
    backdrop-filter: blur(10px);
    transition: var(--transition-bounce);
}

.contact-card.active-card {
    cursor: pointer;
}

.contact-card.active-card:hover {
    transform: translateY(-3px);
    border-color: var(--color-accent-indigo);
    background: var(--color-bg-card-hover);
}

.c-card-icon {
    width: 46px;
    height: 46px;
    border-radius: var(--border-radius-sm);
    background: var(--color-bg-dark);
    border: 1px solid var(--color-border);
    color: var(--color-accent-indigo);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    transition: var(--transition-bounce);
}

.contact-card.active-card:hover .c-card-icon {
    background: var(--color-accent-indigo);
    color: var(--color-bg-deep);
    border-color: var(--color-accent-indigo);
}

.c-card-details {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
}

.link-card {
    flex-grow: 1;
}

.c-card-details .label {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-text-dim);
    letter-spacing: 1px;
}

.c-card-details .val {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text-white);
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.copy-hint {
    position: absolute;
    right: 1.5rem;
    top: 50%;
    transform: translateY(-50%);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-text-dim);
    transition: var(--transition-smooth);
}

.contact-card.active-card:hover .copy-hint {
    color: var(--color-accent-indigo);
}

.no-whatsapp-notice {
    background: rgba(239, 68, 68, 0.03);
    border: 1px solid rgba(239, 68, 68, 0.1);
    border-radius: var(--border-radius-sm);
    padding: 1rem 1.25rem;
    display: flex;
    gap: 0.75rem;
    font-size: 0.85rem;
    color: var(--color-text-muted);
    align-items: flex-start;
}

.no-whatsapp-notice i {
    font-size: 1.1rem;
    color: var(--color-accent-rose);
    margin-top: 2px;
}

/* Form Panel */
.contact-form-panel {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: 3rem;
    backdrop-filter: blur(12px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text-primary);
}

.form-group input,
.form-group textarea {
    background: var(--color-bg-deep);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    padding: 0.85rem 1.2rem;
    font-family: var(--font-primary);
    font-size: 0.95rem;
    color: var(--color-text-white);
    transition: var(--transition-smooth);
    outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--color-accent-indigo);
    box-shadow: 0 0 10px rgba(80, 70, 229, 0.2);
    background: var(--color-bg-dark);
}

.form-note {
    font-size: 0.8rem;
    color: var(--color-text-dim);
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.form-note i {
    color: var(--color-accent-cyan);
    font-size: 1rem;
}

.btn-submit {
    width: 100%;
    padding: 1rem;
    font-size: 1.05rem;
}

/* Loading Spinner */
.spinner {
    width: 20px;
    height: 20px;
    border: 3px solid rgba(11, 15, 25, 0.3);
    border-radius: 50%;
    border-top-color: var(--color-text-white);
    animation: spin 0.8s linear infinite;
}

.spinner.hidden {
    display: none;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* --- Footer --- */
.footer {
    padding: 4rem 0;
    border-top: 1px solid var(--color-border);
    background: var(--color-bg-deep);
}

.footer-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.footer p {
    font-size: 0.9rem;
    color: var(--color-text-dim);
}

.footer-bottom-links {
    display: flex;
    gap: 1.5rem;
    font-size: 0.9rem;
    color: var(--color-text-dim);
}

.footer-bottom-links a:hover {
    color: var(--color-accent-cyan);
}

/* --- Toast Notifications --- */
.toast-container {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    pointer-events: none;
}

.toast {
    background: #090d16;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    color: var(--color-text-primary);
    font-weight: 500;
    font-size: 0.9rem;
    pointer-events: auto;
    animation: toastIn 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    transition: var(--transition-bounce);
}

@keyframes toastIn {
    from {
        transform: translateY(20px) scale(0.9);
        opacity: 0;
    }
    to {
        transform: translateY(0) scale(1);
        opacity: 1;
    }
}

.toast.hide {
    opacity: 0;
    transform: translateY(10px) scale(0.9);
}

.toast-success {
    border-left: 3px solid var(--color-accent-emerald);
}

.toast-success i {
    color: var(--color-accent-emerald);
}

.toast-error {
    border-left: 3px solid var(--color-accent-rose);
}

.toast-error i {
    color: var(--color-accent-rose);
}

/* ==========================================================================
   Responsive Breakpoints & Media Queries
   ========================================================================== */

@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }

    .hero-content {
        align-items: center;
    }

    .hero-description {
        margin: 0 auto 2.5rem;
    }

    .hero-visual {
        justify-content: center;
    }

    .about-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .skills-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .education-awards-grid {
        grid-template-columns: 1fr;
        gap: 4rem;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .mobile-menu-btn {
        display: block;
    }

    .hero-title {
        font-size: 2.8rem;
    }

    .hero-subtitle {
        font-size: 1.4rem;
    }

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

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

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

    .contact-form-panel {
        padding: 2rem;
    }

    .form-row {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .footer-container {
        flex-direction: column;
        text-align: center;
    }
}