/* ==========================================================================
   BESPOKE HUMAN-DESIGNED THEME SYSTEM
   ========================================================================== */

:root {
    /* Typographic Grid */
    --font-heading: 'Lora', Georgia, serif;
    --font-body: 'Inter', system-ui, -apple-system, sans-serif;

    /* Transition Mechanics */
    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.16, 1, 0.3, 1);

    /* HSL Theme Tokens - Sophisticated Obsidian Dark (Default) */
    --bg-primary: #0A0A0C;
    --bg-secondary: #111113;
    --bg-alt: #0D0D0F;
    --bg-grid-color: rgba(255, 255, 255, 0.025);
    
    --bg-gradient-1: #0A0A0C;
    --bg-gradient-2: #0E081C;
    --bg-gradient-3: #050E1A;
    
    --text-primary: #F3F4F6;
    --text-secondary: #9CA3AF;
    --text-muted: #6B7280;
    
    --accent-primary: #3B82F6; /* Premium Sapphire Blue */
    --accent-secondary: #10B981; /* Precise Emerald Green */
    
    --border-color: rgba(255, 255, 255, 0.07);
    --border-hover: rgba(255, 255, 255, 0.15);
    --border-focus: var(--accent-primary);
    
    --card-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
    --card-shadow-hover: 0 10px 30px rgba(0, 0, 0, 0.6);
}

/* Sophisticated Editorial Light Theme */
[data-theme="light"] {
    --bg-primary: #FCFCFD;
    --bg-secondary: #F3F4F6;
    --bg-alt: #F9FAFB;
    --bg-grid-color: rgba(0, 0, 0, 0.02);
    
    --bg-gradient-1: #FCFCFD;
    --bg-gradient-2: #F6F4FF;
    --bg-gradient-3: #EFF6FF;
    
    --text-primary: #111827;
    --text-secondary: #4B5563;
    --text-muted: #9CA3AF;
    
    --accent-primary: #2563EB; /* Royal Blue */
    --accent-secondary: #059669; /* Rich Green */
    
    --border-color: rgba(0, 0, 0, 0.08);
    --border-hover: rgba(0, 0, 0, 0.18);
    
    --card-shadow: 0 4px 15px rgba(15, 23, 42, 0.03);
    --card-shadow-hover: 0 10px 25px rgba(15, 23, 42, 0.07);
}

/* ==========================================================================
   GLOBAL RESET & DOCUMENT LAYOUT
   ========================================================================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    scroll-behavior: smooth;
}

html {
    font-size: 62.5%; /* 10px metric base */
}

body {
    font-family: var(--font-body);
    font-size: 1.6rem;
    line-height: 1.65;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    overflow-x: hidden;
    /* Composite background: fixed radial dot-grid on top, slowly shifting animated color gradient underneath */
    background-image: 
        radial-gradient(var(--bg-grid-color) 1.5px, transparent 1.5px),
        linear-gradient(135deg, var(--bg-gradient-1), var(--bg-gradient-2), var(--bg-gradient-3), var(--bg-gradient-1));
    background-size: 28px 28px, 400% 400%;
    background-attachment: scroll, fixed;
    animation: bg-gradient-shift 24s ease infinite;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

@keyframes bg-gradient-shift {
    0% { background-position: 0px 0px, 0% 50%; }
    50% { background-position: 0px 0px, 100% 50%; }
    100% { background-position: 0px 0px, 0% 50%; }
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: radial-gradient(800px circle at var(--mouse-x, -999px) var(--mouse-y, -999px), rgba(59, 130, 246, 0.03), transparent 80%);
    z-index: 1;
    pointer-events: none;
    transition: opacity 0.5s ease;
}

[data-theme="light"] body::before {
    background: radial-gradient(800px circle at var(--mouse-x, -999px) var(--mouse-y, -999px), rgba(37, 99, 235, 0.015), transparent 80%);
}

/* Floating Ambient Orb Mesh Backdrop */
.ambient-glow-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 1;
    pointer-events: none;
    overflow: hidden;
    opacity: 0.8;
}

[data-theme="light"] .ambient-glow-backdrop {
    opacity: 0.45;
}

.orb {
    position: absolute;
    width: 60rem;
    height: 60rem;
    border-radius: 50%;
    filter: blur(140px);
    -webkit-filter: blur(140px);
    opacity: 0.07;
    mix-blend-mode: screen;
}

[data-theme="light"] .orb {
    mix-blend-mode: multiply;
    filter: blur(120px);
    -webkit-filter: blur(120px);
    opacity: 0.04;
}

.orb-1 {
    top: -15%;
    left: -10%;
    background: radial-gradient(circle, var(--accent-primary) 0%, transparent 70%);
    animation: float-orb-1 25s infinite alternate ease-in-out;
}

.orb-2 {
    bottom: -15%;
    right: -10%;
    background: radial-gradient(circle, #8B5CF6 0%, transparent 70%);
    animation: float-orb-2 30s infinite alternate ease-in-out;
}

.orb-3 {
    top: 35%;
    left: 40%;
    background: radial-gradient(circle, var(--accent-secondary) 0%, transparent 70%);
    animation: float-orb-3 35s infinite alternate ease-in-out;
}

@keyframes float-orb-1 {
    0% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(120px, 90px) scale(1.1); }
    100% { transform: translate(-60px, 160px) scale(0.95); }
}

@keyframes float-orb-2 {
    0% { transform: translate(0, 0) scale(0.95); }
    50% { transform: translate(-140px, -90px) scale(1.08); }
    100% { transform: translate(70px, -170px) scale(1); }
}

@keyframes float-orb-3 {
    0% { transform: translate(0, 0); }
    50% { transform: translate(90px, -110px) scale(0.9); }
    100% { transform: translate(-90px, 90px) scale(1.1); }
}

/* Custom modern scrollbar design */
::-webkit-scrollbar {
    width: 6px;
}
::-webkit-scrollbar-track {
    background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* Layout Containers */
.container {
    max-width: 110rem;
    margin: 0 auto;
    padding: 0 3rem;
    position: relative;
    z-index: 2;
}

.section-padding {
    padding: 9rem 0;
    position: relative;
}

.bg-alt {
    background-color: var(--bg-alt);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

/* ==========================================================================
   COMMON UI SYSTEM
   ========================================================================== */

.badge {
    display: inline-flex;
    padding: 0.6rem 1.4rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-secondary);
    font-size: 1.2rem;
    font-weight: 500;
    letter-spacing: 0.05rem;
    text-transform: uppercase;
    margin-bottom: 2rem;
}

.section-header {
    text-align: left;
    max-width: 80rem;
    margin: 0 auto 6rem 0; /* Left-aligned for high-end editorial feel */
}

.section-title {
    font-family: var(--font-heading);
    font-size: 3.6rem;
    font-weight: 500;
    letter-spacing: -0.03em;
    margin-bottom: 1rem;
    line-height: 1.25;
}

.divider {
    width: 4rem;
    height: 1px;
    background: var(--text-muted);
    margin: 1.5rem 0 0 0;
    opacity: 0.5;
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.3s;
}

.section-header.animated .divider {
    transform: scaleX(1);
}

/* Bespoke Flat-Design Card (Bypasses basic AI clichés) */
.clean-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: var(--card-shadow);
    transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.clean-card:hover {
    transform: translateY(-2px);
    border-color: var(--border-hover);
    box-shadow: var(--card-shadow-hover);
}

/* Premium Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.8rem;
    padding: 1.2rem 2.8rem;
    font-size: 1.5rem;
    font-weight: 500;
    border-radius: 8px;
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition-fast);
}

.btn-primary {
    background-color: var(--text-primary);
    color: var(--bg-primary);
    border: 1px solid var(--text-primary);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 50%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.25),
        transparent
    );
    transform: skewX(-25deg);
    transition: none;
    z-index: -1;
}

[data-theme="light"] .btn-primary::before {
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.5),
        transparent
    );
}

.btn-primary:hover::before {
    left: 150%;
    transition: left 0.75s ease-in-out;
}

.btn-primary:hover {
    opacity: 0.95;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 255, 255, 0.05);
}

[data-theme="light"] .btn-primary:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

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

.btn-sm {
    padding: 0.8rem 1.8rem;
    font-size: 1.3rem;
    border-radius: 6px;
}

.btn-block {
    display: flex;
    width: 100%;
}

/* Tags */
.tag {
    display: inline-block;
    padding: 0.4rem 1rem;
    border-radius: 4px;
    font-size: 1.2rem;
    font-weight: 500;
    margin-right: 0.6rem;
    margin-bottom: 0.6rem;
    border: 1px solid var(--border-color);
}

.tag-neutral {
    background: var(--bg-primary);
    color: var(--text-secondary);
}

/* ==========================================================================
   HEADER NAVIGATION
   ========================================================================== */

#main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    padding: 3rem 0;
    transition: padding var(--transition-normal), background-color var(--transition-normal), border-bottom var(--transition-normal);
}

#main-header.scrolled {
    padding: 1.8rem 0;
    background-color: rgba(var(--bg-primary) === '#0A0A0C' ? '10, 10, 12' : '252, 252, 253', 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
}

.header-container {
    max-width: 110rem;
    margin: 0 auto;
    padding: 0 3rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-family: var(--font-heading);
    font-size: 2.1rem;
    font-weight: 500;
    text-decoration: none;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

#nav-menu {
    display: flex;
    gap: 3.5rem;
}

.nav-link {
    font-size: 1.4rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
    position: relative;
    padding: 0.5rem 0;
    transition: color var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background-color: var(--text-primary);
    transform: scaleX(0);
    transform-origin: center;
    transition: transform var(--transition-normal);
}

.nav-link:hover::after {
    transform: scaleX(1);
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1.2rem;
}

.action-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    width: 3.6rem;
    height: 3.6rem;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.4rem;
    transition: all var(--transition-fast);
}

.action-btn:hover {
    border-color: var(--border-hover);
    color: var(--text-primary);
}

#theme-toggle .sun-icon { display: none; }
#theme-toggle .moon-icon { display: block; }

[data-theme="light"] #theme-toggle .sun-icon { display: block; }
[data-theme="light"] #theme-toggle .moon-icon { display: none; }

.mobile-only {
    display: none;
}

/* ==========================================================================
   HERO LANDING SECTION (Sophisticated, Asymmetric Editorial Layout)
   ========================================================================== */

.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding-top: 14rem;
    padding-bottom: 9rem;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.25fr 0.75fr;
    gap: 8rem;
    align-items: center;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: 4.8rem;
    font-weight: 400;
    line-height: 1.2;
    margin-bottom: 2rem;
    letter-spacing: -0.03em;
    color: var(--text-primary);
}

.hero-description {
    color: var(--text-secondary);
    font-size: 1.7rem;
    line-height: 1.7;
    margin-bottom: 3.5rem;
    max-width: 58rem;
}

.hero-socials {
    display: flex;
    gap: 1.2rem;
    margin-bottom: 4rem;
}

.social-icon-link {
    width: 4rem;
    height: 4rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background: transparent;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    text-decoration: none;
    transition: all var(--transition-fast);
}

.social-icon-link:hover {
    border-color: var(--border-hover);
    color: var(--text-primary);
}

.hero-ctas {
    display: flex;
    gap: 1.5rem;
}

/* Refined Minimalist Avatar Frame */
.hero-visual {
    display: flex;
    justify-content: flex-end;
}

.avatar-frame {
    width: 30rem;
    height: 30rem;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    overflow: hidden;
    box-shadow: var(--card-shadow);
    background-color: var(--bg-secondary);
}

.avatar-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(10%) contrast(102%);
    transition: transform var(--transition-slow);
}

.avatar-frame:hover .avatar-img {
    transform: scale(1.03);
}

/* ==========================================================================
   ABOUT & TYPOGRAPHIC TABS SYSTEM
   ========================================================================== */

.about-tabs-container {
    margin-top: 2rem;
}

.tab-controls {
    display: flex;
    justify-content: flex-start;
    gap: 1rem;
    margin-bottom: 4.5rem;
    border-bottom: 1px solid var(--border-color);
}

.tab-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 1.2rem 2.4rem;
    font-size: 1.5rem;
    font-weight: 500;
    font-family: var(--font-body);
    cursor: pointer;
    position: relative;
    transition: color var(--transition-fast);
}

.tab-btn::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--text-primary);
    transform: scaleX(0);
    transition: transform var(--transition-fast);
}

.tab-btn.active {
    color: var(--text-primary);
}

.tab-btn.active::after {
    transform: scaleX(1);
}

.tab-btn:hover:not(.active) {
    color: var(--text-primary);
}

.tab-panels {
    position: relative;
    min-height: 34rem;
}

.tab-panel {
    display: none;
    animation: content-reveal 0.4s ease forwards;
}

.tab-panel.active {
    display: block;
}

@keyframes content-reveal {
    from { opacity: 0; transform: translateY(1rem); }
    to { opacity: 1; transform: translateY(0); }
}

.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 6rem;
    align-items: flex-start;
}

.about-info h3, .academic-focus h3, .leadership-highlights h3 {
    font-family: var(--font-heading);
    font-size: 2.6rem;
    font-weight: 400;
    margin-bottom: 2rem;
}

.about-info p, .academic-focus p, .leadership-highlights p {
    color: var(--text-secondary);
    font-size: 1.6rem;
    margin-bottom: 2rem;
}

.core-values-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    margin-top: 3.5rem;
}

.value-card h4 {
    font-size: 1.7rem;
    font-weight: 600;
    margin-bottom: 0.8rem;
    color: var(--text-primary);
}

.value-card p {
    font-size: 1.45rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.about-stats-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.6rem;
}

.stat-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 3rem 2rem;
    text-align: left;
    transition: all var(--transition-fast);
}

.stat-card:hover {
    border-color: var(--border-hover);
}

.stat-number {
    display: block;
    font-family: var(--font-heading);
    font-size: 3.6rem;
    font-weight: 400;
    color: var(--text-primary);
    line-height: 1;
    margin-bottom: 0.8rem;
}

.stat-label {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Academic & Leadership Cards */
.academic-cards {
    display: flex;
    flex-direction: column;
    gap: 1.6rem;
    margin-top: 3rem;
}

.academic-tag-card {
    display: flex;
    gap: 2.2rem;
    padding: 2.4rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    align-items: center;
}

.icon-circle {
    width: 4.8rem;
    height: 4.8rem;
    border-radius: 8px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    flex-shrink: 0;
}

.academic-tag-card h4 {
    font-size: 1.7rem;
    font-weight: 600;
    margin-bottom: 0.4rem;
}

.academic-tag-card p {
    font-size: 1.45rem;
    margin-bottom: 0;
}

.leadership-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2.4rem;
    margin-top: 3rem;
}

.lead-feature {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 3.5rem 3rem;
}

.lead-icon {
    font-size: 2.6rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.lead-feature h4 {
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.lead-feature p {
    font-size: 1.45rem;
    line-height: 1.6;
    margin-bottom: 0;
}

/* ==========================================================================
   MINIMALIST TIMELINE SECTION
   ========================================================================== */

.timeline-wrapper {
    position: relative;
    max-width: 84rem;
    margin: 4rem auto 0 auto;
}

.timeline-line {
    position: absolute;
    top: 0;
    left: 4.5rem;
    width: 1px;
    height: 100%;
    background-color: var(--border-color);
}

.timeline-line-progress {
    position: absolute;
    top: 0;
    left: 4.45rem;
    width: 2px;
    height: 0%;
    background: linear-gradient(
        to bottom,
        var(--accent-primary) 0%,
        var(--accent-secondary) 100%
    );
    z-index: 2;
    transition: height 0.1s ease-out;
}

.timeline-item {
    position: relative;
    padding-left: 9rem;
    margin-bottom: 4.5rem;
    transition: transform var(--transition-fast);
}

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

.timeline-item:hover .timeline-badge {
    border-color: var(--text-primary);
    transform: scale(1.08);
    color: var(--text-primary);
}

.timeline-item:hover .timeline-card {
    border-color: var(--border-hover);
    transform: translateX(4px);
}

.timeline-badge {
    position: absolute;
    top: 0;
    left: 2.6rem;
    width: 3.8rem;
    height: 3.8rem;
    border-radius: 8px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    z-index: 5;
}

.timeline-badge.icon-badge {
    font-size: 1.5rem;
}

.node-dot {
    width: 0.8rem;
    height: 0.8rem;
    background-color: var(--text-muted);
    border-radius: 50%;
}

.timeline-card {
    padding: 2.4rem 3rem;
}

.timeline-date {
    display: inline-block;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 0.8rem;
    letter-spacing: 0.02em;
}

.timeline-role {
    font-size: 1.9rem;
    font-weight: 600;
    margin-bottom: 0.4rem;
}

.timeline-org {
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 1.2rem;
}

.timeline-details {
    color: var(--text-secondary);
    font-size: 1.45rem;
    margin-bottom: 1.6rem;
}

/* ==========================================================================
   TECHNICAL COMPETENCIES & PRECISE SVG RADAR
   ========================================================================== */

.skills-grid {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 8rem;
    align-items: center;
}

.skills-panel-title {
    font-family: var(--font-heading);
    font-size: 2.6rem;
    font-weight: 400;
    margin-bottom: 1rem;
}

.skills-panel-desc {
    color: var(--text-secondary);
    font-size: 1.5rem;
    margin-bottom: 3.5rem;
}

.radar-container {
    width: 100%;
    max-width: 32rem;
    margin: 0 auto;
}

/* Precision SVG Chart Styling */
.skills-radar {
    width: 100%;
    height: auto;
}

.radar-grid-line {
    fill: none;
    stroke: var(--border-color);
    stroke-width: 0.8;
}

.radar-axis {
    stroke: var(--border-color);
    stroke-width: 0.8;
    stroke-dasharray: 2 2;
}

.radar-fill {
    fill: rgba(59, 130, 246, 0.08);
    stroke: var(--text-muted);
    stroke-width: 1.5;
}

.radar-node {
    fill: var(--bg-primary);
    stroke: var(--text-muted);
    stroke-width: 1.5;
    cursor: pointer;
    transition: transform var(--transition-fast);
}

.radar-node:hover {
    transform: scale(1.3);
    fill: var(--text-primary);
}

.radar-label {
    fill: var(--text-secondary);
    font-family: var(--font-body);
    font-size: 1.05rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

/* Minimalist Skill Badges Layout */
.skills-category-group {
    margin-bottom: 4rem;
}

.skills-category-group:last-child {
    margin-bottom: 0;
}

.category-title {
    font-family: var(--font-body);
    font-size: 1.6rem;
    font-weight: 600;
    margin-bottom: 1.8rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    color: var(--text-primary);
}

.category-title i {
    font-size: 1.4rem;
    color: var(--text-muted);
}

.skills-tags-container {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.skill-badge-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    padding: 0.8rem 1.6rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1.4rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.skill-badge-tag i {
    font-size: 1.25rem;
    color: var(--text-muted);
}

.skill-badge-tag:hover {
    transform: translateY(-1px);
    border-color: var(--border-hover);
    color: var(--text-primary);
}

/* ==========================================================================
   PROJECTS SECTION & CRISP GRID
   ========================================================================== */

.projects-filter-bar {
    display: flex;
    justify-content: flex-start;
    gap: 0.8rem;
    margin-bottom: 4.5rem;
}

.filter-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.8rem 1.8rem;
    font-size: 1.4rem;
    font-weight: 500;
    border-radius: 6px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.filter-btn.active {
    color: var(--text-primary);
    border-color: var(--text-primary);
    background-color: var(--bg-secondary);
}

.filter-btn:hover:not(.active) {
    color: var(--text-primary);
    border-color: var(--border-hover);
}

.projects-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.project-card {
    height: 100%;
}

.project-card.hidden {
    display: none;
}

.project-card-details {
    padding: 3.5rem;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.project-meta-tag {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
}

.project-card-title {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 400;
    margin-bottom: 1.2rem;
    letter-spacing: -0.01em;
}

.project-card-desc {
    color: var(--text-secondary);
    font-size: 1.5rem;
    line-height: 1.6;
    margin-bottom: 2.5rem;
}

.project-tags {
    margin-top: auto;
    margin-bottom: 2.5rem;
}

.badge-tag {
    display: inline-block;
    padding: 0.4rem 1rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-right: 0.6rem;
    margin-bottom: 0.6rem;
}

.project-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--border-color);
    padding-top: 2rem;
}

.btn-text {
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 1.45rem;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.6rem;
    transition: color var(--transition-fast);
}

.btn-text:hover {
    color: var(--text-muted);
}

.project-code-link {
    color: var(--text-muted);
    font-size: 1.8rem;
    text-decoration: none;
    transition: color var(--transition-fast);
}

.project-code-link:hover {
    color: var(--text-primary);
}

/* ==========================================================================
   CONTACT SECTION
   ========================================================================== */

.contact-grid {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 8rem;
}

.contact-info-panel h3 {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 400;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.contact-subtext {
    color: var(--text-secondary);
    font-size: 1.6rem;
    margin-bottom: 4rem;
}

.contact-channels {
    display: flex;
    flex-direction: column;
    gap: 1.6rem;
}

.contact-item-card {
    display: flex;
    gap: 2rem;
    padding: 2.4rem;
    align-items: center;
    transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.contact-item-card:hover {
    transform: translateY(-3px);
    border-color: var(--border-hover);
    box-shadow: var(--card-shadow-hover);
}

.contact-item-card .item-icon {
    width: 4.4rem;
    height: 4.4rem;
    border-radius: 8px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    color: var(--text-secondary);
    flex-shrink: 0;
    transition: transform var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}

.contact-item-card:hover .item-icon {
    border-color: var(--text-primary);
    color: var(--text-primary);
    transform: scale(1.06);
}

.item-details span {
    display: block;
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    margin-bottom: 0.4rem;
}

.item-details a {
    font-size: 1.65rem;
    font-weight: 600;
    color: var(--text-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.item-details a:hover {
    color: var(--text-muted);
}

/* Clean Form Panels */
.contact-form-panel {
    padding: 4rem;
    position: relative;
    overflow: hidden;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.form-group {
    margin-bottom: 2.8rem;
    position: relative;
}

.form-group:last-of-type {
    margin-bottom: 3.2rem;
}

.form-input {
    width: 100%;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.4rem;
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 1.45rem;
    transition: all var(--transition-fast);
}

.form-input:focus {
    outline: none;
    border-color: var(--text-primary);
}

textarea.form-input {
    resize: none;
}

/* Bespoke Neaten Floating Labels */
.floating-group {
    position: relative;
}

.floating-label {
    position: absolute;
    left: 1.4rem;
    top: 1.4rem;
    color: var(--text-muted);
    font-size: 1.45rem;
    pointer-events: none;
    transition: transform var(--transition-fast), font-size var(--transition-fast), color var(--transition-fast);
}

.form-input:focus ~ .floating-label,
.form-input:not(:placeholder-shown) ~ .floating-label {
    transform: translateY(-2.6rem) translateX(-0.4rem);
    font-size: 1.15rem;
    color: var(--text-primary);
}

.error-msg {
    display: none;
    font-size: 1.15rem;
    color: #EF4444;
    margin-top: 0.4rem;
    position: absolute;
}

.form-group.invalid .form-input {
    border-color: #EF4444;
}

.form-group.invalid .error-msg {
    display: block;
}

/* Submission States */
.hidden {
    display: none !important;
}

.btn-spinner {
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
}

/* Feedback Overlay */
.success-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 4rem;
    z-index: 10;
}

.success-content {
    text-align: center;
    max-width: 34rem;
}

.success-icon-ring {
    width: 6.4rem;
    height: 6.4rem;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    font-size: 2.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 2rem;
}

.success-content h3 {
    font-family: var(--font-heading);
    font-size: 2.4rem;
    font-weight: 400;
    margin-bottom: 0.8rem;
}

.success-content p {
    color: var(--text-secondary);
    font-size: 1.45rem;
    margin-bottom: 2.4rem;
}

/* ==========================================================================
   MODAL PANEL STYLINGS
   ========================================================================== */

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.modal-card {
    width: 100%;
    max-width: 78rem;
    max-height: 85vh;
    overflow-y: auto;
    position: relative;
    padding: 4rem;
}

.close-btn {
    position: absolute;
    top: 2rem;
    right: 2rem;
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 2rem;
    cursor: pointer;
    transition: color var(--transition-fast);
}

.close-btn:hover {
    color: var(--text-primary);
}

.modal-category {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    display: inline-block;
    margin-bottom: 0.4rem;
}

.modal-title {
    font-family: var(--font-heading);
    font-size: 2.8rem;
    font-weight: 400;
    margin-bottom: 1.5rem;
}

.modal-divider {
    height: 1px;
    background: var(--border-color);
    margin-bottom: 3rem;
}

.modal-content-grid {
    display: grid;
    grid-template-columns: 1.3fr 0.7fr;
    gap: 4.5rem;
}

.modal-main-text h4, .modal-sidebar h4 {
    font-size: 1.6rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.modal-main-text p {
    color: var(--text-secondary);
    font-size: 1.45rem;
    margin-bottom: 2.5rem;
}

.modal-tech-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin-bottom: 3rem;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */

#main-footer {
    border-top: 1px solid var(--border-color);
    padding: 3.5rem 0;
    background-color: var(--bg-primary);
}

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

.copyright {
    color: var(--text-muted);
    font-size: 1.35rem;
    margin-bottom: 0;
}

.footer-links {
    display: flex;
    gap: 1.6rem;
}

.footer-links a {
    color: var(--text-muted);
    font-size: 1.6rem;
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--text-primary);
}

/* ==========================================================================
   RESPONSIVE LAYOUT STYLES
   ========================================================================== */

@media (max-width: 1024px) {
    .hero-title {
        font-size: 4rem;
    }
    
    .hero-grid {
        gap: 4rem;
    }
    
    .avatar-frame {
        width: 25rem;
        height: 25rem;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
        gap: 6rem;
    }
    
    .radar-container {
        max-width: 28rem;
    }
    
    .contact-grid {
        gap: 4rem;
    }
}

@media (max-width: 768px) {
    .mobile-only {
        display: flex;
    }
    
    #nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 26rem;
        height: 100vh;
        background: var(--bg-secondary);
        border-left: 1px solid var(--border-color);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 3.5rem;
        z-index: 95;
        transition: right 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        padding: 4rem;
    }
    
    #nav-menu.open {
        right: 0;
        box-shadow: -10px 0 30px rgba(0, 0, 0, 0.2);
    }
    
    .hero-grid {
        grid-template-columns: 1fr;
        text-align: left;
        gap: 5rem;
    }
    
    .hero-visual {
        justify-content: start;
        order: -1;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: 4.5rem;
    }
    
    .leadership-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 4.5rem;
    }
    
    .timeline-line {
        left: 2rem;
    }
    
    .timeline-item {
        padding-left: 5rem;
    }
    
    .timeline-badge {
        left: 0.1rem;
    }
    
    .modal-content-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 3.2rem;
    }
    
    .hero-ctas {
        flex-direction: column;
        width: 100%;
    }
    
    .hero-ctas .btn {
        width: 100%;
    }
    
    .tab-controls {
        flex-direction: column;
        align-items: stretch;
        gap: 0.5rem;
    }
    
    .tab-btn {
        text-align: left;
        padding: 1rem 0.5rem;
    }
    
    .tab-btn::after {
        display: none;
    }
    
    .about-stats-cards {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }
    
    .contact-form-panel {
        padding: 2.5rem;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 2rem;
        text-align: center;
    }
}

/* Scroll Progress Bar */
#scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
    z-index: 999;
    transition: width 0.1s ease;
}

/* Typing Subtitle in Hero */
.hero-subtitle {
    font-family: var(--font-body);
    font-size: 2.2rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    min-height: 3.6rem;
}

.typed-cursor {
    color: var(--accent-primary);
    animation: cursor-blink 0.8s infinite;
}

@keyframes cursor-blink {
    0%, 100% { opacity: 0; }
    50% { opacity: 1; }
}

/* Staggered Transitions */
.stagger-1 { transition-delay: 0.1s; }
.stagger-2 { transition-delay: 0.2s; }
.stagger-3 { transition-delay: 0.3s; }
.stagger-4 { transition-delay: 0.4s; }

/* SVG Skills Radar Pulsing Animation */
.radar-fill {
    animation: radar-pulse 6s infinite ease-in-out;
    transform-origin: center;
}

@keyframes radar-pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.02); opacity: 0.85; }
}

/* ==========================================================================
   SCROLL REVEAL MOTION FRAMEWORK
   ========================================================================== */

[data-animate] {
    opacity: 0;
    will-change: transform, opacity;
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-animate="fade-in"] {
    transform: translateY(2rem) scale(0.97);
}

[data-animate="slide-up"] {
    transform: translateY(3.5rem);
}

[data-animate="slide-right"] {
    transform: translateX(-3.5rem);
}

[data-animate="slide-left"] {
    transform: translateX(3.5rem);
}

/* Activated Animated Reveal State */
[data-animate].animated {
    opacity: 1;
    transform: translateY(0) translateX(0) scale(1);
}

/* Staggered load delays for children of animated groups */
[data-animate].animated .stagger-1 { transition-delay: 0.1s; }
[data-animate].animated .stagger-2 { transition-delay: 0.2s; }
[data-animate].animated .stagger-3 { transition-delay: 0.3s; }
[data-animate].animated .stagger-4 { transition-delay: 0.4s; }

/* ==========================================================================
   CINEMATIC HERO LOADING STAGGER SEQUENCE
   ========================================================================== */

.hero-badge {
    animation: fade-down-reveal 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.hero-title {
    animation: slide-up-reveal 1s cubic-bezier(0.16, 1, 0.3, 1) 0.12s forwards;
    opacity: 0;
}

.hero-subtitle {
    animation: slide-up-reveal 1s cubic-bezier(0.16, 1, 0.3, 1) 0.22s forwards;
    opacity: 0;
}

.hero-description {
    animation: slide-up-reveal 1.2s cubic-bezier(0.16, 1, 0.3, 1) 0.32s forwards;
    opacity: 0;
}

.hero-socials {
    animation: slide-up-reveal 1.2s cubic-bezier(0.16, 1, 0.3, 1) 0.42s forwards;
    opacity: 0;
}

.hero-ctas {
    animation: slide-up-reveal 1.2s cubic-bezier(0.16, 1, 0.3, 1) 0.52s forwards;
    opacity: 0;
}

.hero-visual {
    animation: scale-up-reveal 1.4s cubic-bezier(0.16, 1, 0.3, 1) 0.22s forwards;
    opacity: 0;
}

@keyframes fade-down-reveal {
    from { opacity: 0; transform: translateY(-1.2rem); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slide-up-reveal {
    from { opacity: 0; transform: translateY(2.5rem); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes scale-up-reveal {
    from { opacity: 0; transform: scale(0.96) translateY(2rem); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}