/* -------------------------------------------------------------
   Safeer Ahmed Farooqi - Developer Portfolio Stylesheet
   Design Paradigm: Sleek Glassmorphism, System Console Accents,
   and Glowing SVG Data Pipelines.
   ------------------------------------------------------------- */

/* --- Custom Variables & Tokens --- */
:root {
    --bg-primary: hsl(222, 28%, 6%);
    --bg-secondary: hsl(222, 24%, 10%);
    --bg-tertiary: hsla(222, 24%, 14%, 0.4);
    --bg-terminal: hsl(222, 35%, 4%);
    
    --accent-cyan: hsl(180, 100%, 50%);
    --accent-cyan-hover: hsl(180, 100%, 40%);
    --accent-cyan-glow: hsla(180, 100%, 50%, 0.15);
    
    --accent-purple: hsl(272, 90%, 65%);
    --accent-purple-glow: hsla(272, 90%, 65%, 0.25);
    
    --accent-green: hsl(145, 80%, 50%);
    --accent-yellow: hsl(45, 90%, 50%);
    --accent-red: hsl(0, 85%, 55%);
    
    --text-primary: hsl(210, 20%, 98%);
    --text-secondary: hsl(215, 15%, 75%);
    --text-muted: hsl(215, 12%, 50%);
    
    --border-color: hsla(210, 20%, 100%, 0.08);
    --border-color-hover: hsla(180, 100%, 50%, 0.3);
    
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-mono: 'Fira Code', 'Courier New', Courier, monospace;
    
    --card-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.4);
    --transition-smooth: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

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

body.dark-mode {
    background-color: var(--bg-primary);
}

/* --- Background Aesthetics --- */
.glow-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    z-index: -2;
    opacity: 0.45;
    pointer-events: none;
}

#orb-1 {
    width: 450px;
    height: 450px;
    background: radial-gradient(circle, var(--accent-cyan) 0%, transparent 70%);
    top: 10%;
    right: -10%;
    animation: float-slow 20s infinite alternate;
}

#orb-2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--accent-purple) 0%, transparent 70%);
    bottom: 20%;
    left: -15%;
    animation: float-slow 25s infinite alternate-reverse;
}

.grid-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.015) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.015) 1px, transparent 1px);
    background-size: 40px 40px;
    background-position: center;
    z-index: -1;
    pointer-events: none;
}

/* --- Scrollbar Customization --- */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--bg-secondary);
    border-radius: 4px;
    border: 1px solid var(--border-color);
}

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

/* --- Container --- */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* --- Header / Navigation --- */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    background: rgba(10, 15, 26, 0.65);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition-smooth);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.logo {
    font-family: var(--font-mono);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: -1px;
}

.logo-accent {
    color: var(--accent-cyan);
    font-weight: 800;
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
}

.nav-toggle .bar {
    display: block;
    width: 25px;
    height: 3px;
    margin: 5px auto;
    transition: all 0.3s ease-in-out;
    background-color: var(--text-primary);
}

.nav-menu ul {
    display: flex;
    list-style: none;
    gap: 2.5rem;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: var(--transition-smooth);
    position: relative;
    padding: 0.5rem 0;
}

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

.nav-link.active {
    color: var(--accent-cyan);
    font-weight: 600;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--accent-cyan);
    box-shadow: 0 0 8px var(--accent-cyan);
}

/* --- Button Styling --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.75rem;
    border-radius: 6px;
    font-size: 0.95rem;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition-smooth);
    cursor: pointer;
    font-family: var(--font-sans);
}

.btn-primary {
    background-color: var(--accent-cyan);
    color: var(--bg-primary);
    box-shadow: 0 0 16px var(--accent-cyan-glow);
    border: 1px solid var(--accent-cyan);
}

.btn-primary:hover {
    background-color: transparent;
    color: var(--accent-cyan);
    box-shadow: 0 0 20px var(--accent-cyan-glow);
}

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

.btn-secondary:hover {
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
}

/* --- Hero Section --- */
.hero-section {
    padding: 140px 0 80px 0;
    min-height: 90vh;
    display: flex;
    align-items: center;
}

.hero-layout {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 3.5rem;
    align-items: center;
}

.hero-header-flex {
    display: flex;
    align-items: center;
    gap: 1.75rem;
    margin-bottom: 1.5rem;
}

.profile-avatar-container {
    position: relative;
    width: 90px;
    height: 90px;
    flex-shrink: 0;
}

.profile-avatar {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--accent-cyan);
    box-shadow: 0 0 16px var(--accent-cyan-glow);
}

.avatar-glow {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    box-shadow: 0 0 25px var(--accent-purple-glow);
    pointer-events: none;
    animation: pulse-ring 2s infinite;
}

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

.hero-title-group .badge-container {
    margin-bottom: 0.5rem;
}

.badge-container {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(180, 100%, 50%, 0.08);
    border: 1px solid var(--accent-cyan-glow);
    padding: 0.35rem 0.85rem;
    border-radius: 30px;
    margin-bottom: 1.5rem;
}

.pulse-dot {
    width: 7px;
    height: 7px;
    background-color: var(--accent-cyan);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--accent-cyan);
    animation: pulse-ring 1.5s infinite;
}

.badge-text {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent-cyan);
    letter-spacing: 1px;
}

.hero-text h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 1rem;
    letter-spacing: -1.5px;
    background: linear-gradient(135deg, var(--text-primary) 30%, var(--text-secondary) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.typing-container {
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--text-secondary);
}

.typing-text {
    color: var(--accent-cyan);
    border-right: 2px solid var(--accent-cyan);
    animation: typing-cursor 0.75s step-end infinite;
    padding-right: 3px;
    font-family: var(--font-mono);
}

.hero-bio {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    max-width: 540px;
}

/* --- Terminal Emulator --- */
.terminal-card {
    background-color: var(--bg-terminal);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    box-shadow: var(--card-shadow);
    overflow: hidden;
    height: 400px;
    display: flex;
    flex-direction: column;
    position: relative;
    backdrop-filter: blur(10px);
}

.terminal-header {
    background-color: var(--bg-secondary);
    padding: 0.75rem 1.25rem;
    display: flex;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    position: relative;
}

.terminal-buttons {
    display: flex;
    gap: 0.4rem;
}

.terminal-buttons .dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    display: inline-block;
}

.terminal-buttons .dot.red { background-color: var(--accent-red); }
.terminal-buttons .dot.yellow { background-color: var(--accent-yellow); }
.terminal-buttons .dot.green { background-color: var(--accent-green); }

.terminal-title {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
}

.terminal-body {
    padding: 1.5rem;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    overflow-y: auto;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    color: var(--text-primary);
    line-height: 1.5;
}

.terminal-line {
    white-space: pre-wrap;
    word-break: break-all;
}

.t-prompt {
    color: var(--accent-purple);
}

.t-success {
    color: var(--accent-green);
}

.t-info {
    color: var(--accent-cyan);
}

.t-warn {
    color: var(--accent-yellow);
}

/* --- Section Formatting --- */
section {
    padding: 100px 0;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    letter-spacing: -0.5px;
    position: relative;
    display: inline-block;
}

.section-header h2::after {
    content: '';
    position: absolute;
    width: 60px;
    height: 3px;
    background: var(--accent-cyan);
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    box-shadow: 0 0 10px var(--accent-cyan-glow);
}

.section-subtitle {
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* --- Interactive Projects (Systems) --- */
.projects-layout {
    display: grid;
    grid-template-columns: 0.6fr 1.4fr;
    gap: 2rem;
    align-items: flex-start;
}

.project-tabs {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.tab-btn {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem 1.25rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition-smooth);
    text-align: left;
    display: flex;
    align-items: center;
    gap: 1rem;
    font-family: var(--font-sans);
    font-size: 0.95rem;
    font-weight: 600;
    box-shadow: var(--card-shadow);
}

.tab-btn:hover {
    border-color: var(--accent-cyan-hover);
    color: var(--text-primary);
    transform: translateX(4px);
}

.tab-btn.active {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, rgba(180, 100%, 50%, 0.05) 100%);
    border-color: var(--accent-cyan);
    color: var(--text-primary);
    box-shadow: 0 0 15px rgba(180, 100%, 50%, 0.1);
}

.tab-icon {
    font-size: 1.25rem;
    display: inline-flex;
    align-items: center;
}

.project-display {
    min-height: 480px;
}

.display-card {
    background: var(--bg-tertiary);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: var(--card-shadow);
    padding: 1.5rem;
    transition: var(--transition-smooth);
}

.card-inner-border {
    border: 1px solid transparent;
    transition: var(--transition-smooth);
}

.display-card:hover {
    border-color: var(--border-color-hover);
    box-shadow: 0 12px 40px 0 rgba(180, 100%, 50%, 0.08);
}

.display-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1.5rem;
    margin-bottom: 1.5rem;
}

.project-identity {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.proj-icon-wrapper {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    width: 56px;
    height: 56px;
    border-radius: 10px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-cyan);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.proj-icon-wrapper svg {
    width: 28px;
    height: 28px;
    stroke: currentColor;
    stroke-width: 1.75;
    fill: none;
}

.glow-text {
    text-shadow: 0 0 12px var(--accent-cyan-glow);
}

.proj-badge {
    display: inline-block;
    font-size: 0.75rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: 0.25rem;
}

.stack-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    max-width: 450px;
}

.tag {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 0.3rem 0.7rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-family: var(--font-mono);
    color: var(--text-secondary);
    font-weight: 500;
}

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

.meta-label {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--accent-purple);
    letter-spacing: 1.5px;
    margin-bottom: 0.75rem;
    font-weight: 600;
}

.proj-desc-text {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.highlights-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.highlights-list li {
    font-size: 0.9rem;
    color: var(--text-secondary);
    position: relative;
    padding-left: 1.5rem;
}

.highlights-list li::before {
    content: '➔';
    color: var(--accent-cyan);
    position: absolute;
    left: 0;
    top: 1px;
    font-size: 0.85rem;
}

/* --- SVG Topology Flowcharts --- */
.proj-flow-col {
    display: flex;
    flex-direction: column;
}

.flow-container {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    flex-grow: 1;
    min-height: 280px;
    position: relative;
    padding: 1.5rem;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.topology-svg {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    pointer-events: none;
}

.topology-arrow {
    fill: none;
    stroke: var(--text-muted);
    stroke-width: 2;
    stroke-dasharray: 6, 4;
    animation: flow-dash 10s linear infinite;
}

.topology-arrow.active {
    stroke: var(--accent-cyan);
    stroke-width: 2.5;
    filter: drop-shadow(0 0 4px var(--accent-cyan));
    animation: flow-dash 5s linear infinite;
}

.topo-node {
    background: var(--bg-primary);
    border: 1.5px solid var(--border-color);
    border-radius: 6px;
    padding: 0.6rem 0.85rem;
    text-align: center;
    position: absolute;
    width: 130px;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-primary);
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
    z-index: 2;
    transition: var(--transition-smooth);
}

.topo-node.active-node {
    border-color: var(--accent-cyan);
    box-shadow: 0 0 12px var(--accent-cyan-glow);
    background: linear-gradient(135deg, var(--bg-primary) 0%, rgba(180, 100%, 50%, 0.05) 100%);
}

.topo-node .node-type {
    display: block;
    font-size: 0.6rem;
    color: var(--text-muted);
    margin-top: 0.2rem;
    text-transform: uppercase;
}

/* --- Skills Matrix --- */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 2rem;
}

.skill-card {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 2rem 1.5rem;
    box-shadow: var(--card-shadow);
    backdrop-filter: blur(10px);
    transition: var(--transition-smooth);
}

.skill-card:hover {
    border-color: var(--border-color-hover);
    transform: translateY(-4px);
}

.skill-icon-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.75rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1rem;
}

.skill-icon {
    width: 24px;
    height: 24px;
    display: inline-block;
    position: relative;
}

.skill-icon::before {
    content: '';
    width: 12px;
    height: 12px;
    border: 2.5px solid var(--accent-cyan);
    position: absolute;
    border-radius: 3px;
}

.skill-icon.sys::before { border-color: var(--accent-cyan); }
.skill-icon.be::before { border-color: var(--accent-purple); }
.skill-icon.stream::before { border-color: var(--accent-yellow); }
.skill-icon.fe::before { border-color: var(--accent-green); }

.skill-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
}

.skills-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.skill-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 0.4rem;
    font-weight: 550;
}

.skill-meta .percentage {
    color: var(--text-muted);
    font-family: var(--font-mono);
}

.skill-bar {
    height: 6px;
    background: var(--bg-primary);
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid rgba(255,255,255,0.02);
}

.skill-bar .fill {
    height: 100%;
    border-radius: 10px;
    background: linear-gradient(90deg, var(--accent-cyan) 0%, var(--accent-purple) 100%);
    width: 0;
    transition: width 1.5s cubic-bezier(0.1, 0.8, 0.2, 1);
}

.skill-card:hover .skill-bar .fill {
    filter: brightness(1.1);
}

/* --- Contact Form (Terminal Style) --- */
.contact-layout {
    display: flex;
    justify-content: center;
}

.contact-card {
    background: var(--bg-terminal);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    box-shadow: var(--card-shadow);
    width: 100%;
    max-width: 600px;
    overflow: hidden;
    backdrop-filter: blur(12px);
}

.terminal-form {
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-row {
    display: flex;
    align-items: center;
    border-bottom: 1.5px dashed var(--border-color);
    padding-bottom: 0.5rem;
}

.form-row.message-row {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.5rem;
}

.form-prompt {
    font-family: var(--font-mono);
    color: var(--accent-cyan);
    font-size: 0.9rem;
    font-weight: 600;
    min-width: 120px;
}

.form-row input,
.form-row textarea {
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    flex-grow: 1;
    width: 100%;
}

.form-row input::placeholder,
.form-row textarea::placeholder {
    color: var(--text-muted);
    font-style: italic;
}

.form-row input:focus,
.form-row textarea:focus {
    color: var(--accent-cyan);
}

.form-actions {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 1rem;
}

.btn-submit {
    min-width: 180px;
    height: 46px;
    position: relative;
}

.spinner {
    display: none;
    width: 18px;
    height: 18px;
    border: 2px solid rgba(255, 255, 255, 0.25);
    border-radius: 50%;
    border-top-color: var(--bg-primary);
    animation: spin 0.8s linear infinite;
    position: absolute;
}

.form-feedback {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    transition: var(--transition-smooth);
}

.form-feedback.success {
    color: var(--accent-green);
}

.form-feedback.error {
    color: var(--accent-red);
}

/* --- Footer --- */
.main-footer {
    border-top: 1px solid var(--border-color);
    padding: 3rem 0;
    background: var(--bg-secondary);
}

.footer-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.5rem;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.footer-meta {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

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

.git-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-family: var(--font-mono);
}

.git-dot {
    width: 6px;
    height: 6px;
    background-color: var(--accent-green);
    border-radius: 50%;
    box-shadow: 0 0 6px var(--accent-green);
}

.footer-links {
    display: flex;
    gap: 1.5rem;
}

.footer-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.85rem;
    font-family: var(--font-mono);
    transition: var(--transition-smooth);
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}

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

.icon-git::before {
    content: '⑂';
    font-weight: bold;
    color: var(--accent-cyan);
}

/* --- Keyframe Animations --- */
@keyframes float-slow {
    0% { transform: translateY(0) scale(1); }
    50% { transform: translateY(-40px) scale(1.05); }
    100% { transform: translateY(20px) scale(0.95); }
}

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

@keyframes pulse-ring {
    0% { transform: scale(0.9); opacity: 1; }
    50% { transform: scale(1.3); opacity: 0.3; }
    100% { transform: scale(1); opacity: 1; }
}

@keyframes flow-dash {
    to { stroke-dashoffset: -100; }
}

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

/* --- About Section --- */
.about-section {
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    border-bottom: 1px solid var(--border-color);
}

.about-layout {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 3.5rem;
    align-items: center;
}

.about-content h3 {
    font-size: 2.25rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    letter-spacing: -1px;
    background: linear-gradient(135deg, var(--text-primary) 50%, var(--text-secondary) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.about-text {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 2rem;
}

.about-meta-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    padding: 0.75rem 1.25rem;
    border-radius: 8px;
}

.meta-item strong {
    display: block;
    font-size: 0.9rem;
    color: var(--text-primary);
}

.meta-item span {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.meta-icon {
    font-size: 1.25rem;
    display: inline-flex;
    align-items: center;
    color: var(--accent-cyan);
}

.meta-icon.company::before { content: '🏢'; }
.meta-icon.loc::before { content: '📍'; }

.profile-links {
    display: flex;
    gap: 1rem;
}

.btn-linkedin {
    background-color: rgba(10, 102, 194, 0.1);
    border: 1px solid rgba(10, 102, 194, 0.4);
    color: rgb(10, 102, 194);
    transition: var(--transition-smooth);
}

.btn-linkedin:hover {
    background-color: rgb(10, 102, 194);
    color: #fff;
    box-shadow: 0 0 15px rgba(10, 102, 194, 0.4);
}

.expertise-cards-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.exp-card {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    box-shadow: var(--card-shadow);
    transition: var(--transition-smooth);
    backdrop-filter: blur(10px);
}

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

.exp-card h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--accent-cyan);
}

.exp-card p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* --- Responsive Layouts --- */
@media (max-width: 992px) {
    .about-layout {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }
    
    .about-content {
        text-align: center;
    }

    .about-meta-grid {
        justify-content: center;
    }

    .about-meta-grid .meta-item {
        justify-content: center;
        text-align: left;
    }
    
    .profile-links {
        justify-content: center;
    }

    .hero-layout {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .hero-text {
        text-align: center;
    }

    .hero-header-flex {
        flex-direction: column;
        justify-content: center;
        text-align: center;
        gap: 1rem;
    }

    .hero-title-group {
        align-items: center;
    }
    
    .badge-container {
        justify-content: center;
    }
    
    .hero-bio {
        margin-left: auto;
        margin-right: auto;
    }
    
    .projects-layout {
        grid-template-columns: 1fr;
    }
    
    .project-tabs {
        flex-direction: row;
        overflow-x: auto;
        padding-bottom: 1rem;
        justify-content: flex-start;
    }
    
    .tab-btn {
        flex-shrink: 0;
    }
    
    .grid-2col {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .expertise-cards-grid {
        grid-template-columns: 1fr;
    }

    .hero-text h1 {
        font-size: 2.75rem;
    }
    
    .typing-container {
        font-size: 1.4rem;
    }
    
    .nav-toggle {
        display: block;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: var(--bg-secondary);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        border-top: 1px solid var(--border-color);
        transition: 0.4s ease-in-out;
        padding: 2rem;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-menu ul {
        flex-direction: column;
        align-items: center;
        gap: 2rem;
    }
    
    .nav-link {
        font-size: 1.2rem;
    }
    
    .nav-toggle.active .bar:nth-child(2) { opacity: 0; }
    .nav-toggle.active .bar:nth-child(1) { transform: translateY(8px) rotate(45deg); }
    .nav-toggle.active .bar:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }
    
    .footer-container {
        flex-direction: column;
        text-align: center;
    }
}