:root {
    /* --- Elite Minimalist Palette (60-30-10 Rule) --- */
    --white: #FFFFFF;        /* 60% Primary Foundation */
    --slate: #475569;        /* 30% Secondary/Muted Neutral */
    --matte-black: #000000;  /* 10% Accent Matte Black */
    --black: var(--matte-black);
    --primary: var(--matte-black);

    /* --- Semantic Tokens --- */
    --bg-body: var(--white);
    --bg-soft: #F8FAFC;
    --text-primary: var(--matte-black);
    --text-muted: var(--slate);
    --border-subtle: rgba(0, 0, 0, 0.05);

    /* --- 8pt Grid System --- */
    --grid-1: 0.5rem;  /* 8px */
    --grid-2: 1.0rem;  /* 16px */
    --grid-3: 1.5rem;  /* 24px */
    --grid-4: 2.0rem;  /* 32px (Mobile Minimum Section Padding) */
    --grid-5: 2.5rem;  /* 40px */
    --grid-6: 3.0rem;  /* 48px */
    --grid-8: 4.0rem;  /* 64px (Desktop Minimum Section Padding) */
    --grid-10: 5.0rem; /* 80px */
    --grid-12: 6.0rem; /* 96px */

    /* --- Adaptive Typography (Fluid Scaling) --- */
    --fs-hero: clamp(2.25rem, 8vw, 4.5rem);
    --fs-h2: clamp(1.75rem, 6vw, 3rem);
    --fs-h3: clamp(1.25rem, 4vw, 1.75rem);
    --fs-body: clamp(1rem, 1.5vw, 1.125rem);
    --fs-sm: clamp(0.8125rem, 1.2vw, 0.875rem);

    /* --- Typography (Elite High-Performance Stack) --- */
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    --font-heading: 'Outfit', 'Inter', sans-serif;
    --line-height-base: 1.6;
    
    /* --- Refined Shadow & Radius --- */
    --shadow-premium: 0 1px 2px rgba(0, 0, 0, 0.04), 0 4px 12px rgba(0, 0, 0, 0.03);
    --shadow-floating: 0 20px 48px -12px rgba(0, 0, 0, 0.12);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 24px;
    
    /* --- Effects --- */
    --glass-bg: rgba(255, 255, 255, 0.75);
    --glass-blur: 16px;
    --transition-standard: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    
    /* --- Legacy Variable Support --- */
    --text-heading: var(--black);
    --text-main: var(--slate-600);
    --text-light: var(--slate-400);
    --bg-light: var(--white);
    --border: var(--border-subtle);
}

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px; /* Ensures natural anchor scrolling accounts for sticky header */
    overflow-x: hidden;
    width: 100%;
    position: relative;
}

body {
    font-family: var(--font-main);
    background-color: var(--bg-body);
    color: var(--text-primary);
    font-size: var(--fs-body);
    line-height: var(--line-height-base);
    overflow-x: hidden;
    width: 100%;
    position: relative;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-feature-settings: "cv02", "cv05", "cv11";
    /* Clean Browser Defaults */
    -webkit-tap-highlight-color: transparent;
    text-rendering: optimizeLegibility;
}

/* Interactive Element Touch Performance */
a, button, .btn, .nav-link, .link-premium, .tier-tags span, .project-card {
    touch-action: manipulation;
}

/* --- Custom Cursor --- */
.cursor-dot, .cursor-outline {
    position: fixed;
    top: 0;
    left: 0;
    transform: translate(-50%, -50%);
    border-radius: 50%;
    z-index: 9999;
    pointer-events: none;
    display: none; /* Hidden on mobile/touch */
}

@media (min-width: 1024px) {
    .cursor-dot {
        display: block;
        width: 8px;
        height: 8px;
        background-color: var(--primary);
    }
    .cursor-outline {
        display: block;
        width: 40px;
        height: 40px;
        border: 1.5px solid rgba(0, 0, 0, 0.15);
        transition: width 0.2s, height 0.2s, background-color 0.2s;
    }
    body:hover .cursor-outline {
        /* Logic handled in JS for trailing */
    }
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

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

ul {
    list-style: none;
}

/* --- Utilities --- */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

@media (min-width: 768px) {
    .container {
        padding: 0 var(--grid-4);
    }
}

.section-padding {
    padding: var(--grid-4) 0; /* 2rem mobile minimum */
}

@media (min-width: 768px) {
    .section-padding {
        padding: var(--grid-6) 0;
    }
}

@media (min-width: 1024px) {
    .section-padding {
        padding: var(--grid-8) 0; /* 4rem desktop minimum */
    }
}

/* --- Spacing Utilities (8pt Grid System) --- */
.m-1 { margin: var(--grid-1) !important; } .m-2 { margin: var(--grid-2) !important; } .m-3 { margin: var(--grid-3) !important; }
.m-4 { margin: var(--grid-4) !important; } .m-5 { margin: var(--grid-5) !important; } .m-6 { margin: var(--grid-6) !important; }
.m-8 { margin: var(--grid-8) !important; } .m-10 { margin: var(--grid-10) !important; } .m-12 { margin: var(--grid-12) !important; }

.mt-1 { margin-top: var(--grid-1) !important; } .mt-2 { margin-top: var(--grid-2) !important; } .mt-3 { margin-top: var(--grid-3) !important; }
.mt-4 { margin-top: var(--grid-4) !important; } .mt-5 { margin-top: var(--grid-5) !important; } .mt-6 { margin-top: var(--grid-6) !important; }
.mt-8 { margin-top: var(--grid-8) !important; } .mt-10 { margin-top: var(--grid-10) !important; } .mt-12 { margin-top: var(--grid-12) !important; }

.mb-1 { margin-bottom: var(--grid-1) !important; } .mb-2 { margin-bottom: var(--grid-2) !important; } .mb-3 { margin-bottom: var(--grid-3) !important; }
.mb-4 { margin-bottom: var(--grid-4) !important; } .mb-5 { margin-bottom: var(--grid-5) !important; } .mb-6 { margin-bottom: var(--grid-6) !important; }
.mb-8 { margin-bottom: var(--grid-8) !important; } .mb-10 { margin-bottom: var(--grid-10) !important; } .mb-12 { margin-bottom: var(--grid-12) !important; }

.ml-1 { margin-left: var(--grid-1) !important; } .ml-2 { margin-left: var(--grid-2) !important; } .ml-3 { margin-left: var(--grid-3) !important; }
.ml-4 { margin-left: var(--grid-4) !important; } .ml-5 { margin-left: var(--grid-5) !important; } .ml-6 { margin-left: var(--grid-6) !important; }
.ml-8 { margin-left: var(--grid-8) !important; } .ml-10 { margin-left: var(--grid-10) !important; } .ml-12 { margin-left: var(--grid-12) !important; }

.mr-1 { margin-right: var(--grid-1) !important; } .mr-2 { margin-right: var(--grid-2) !important; } .mr-3 { margin-right: var(--grid-3) !important; }
.mr-4 { margin-right: var(--grid-4) !important; } .mr-5 { margin-right: var(--grid-5) !important; } .mr-6 { margin-right: var(--grid-6) !important; }
.mr-8 { margin-right: var(--grid-8) !important; } .mr-10 { margin-right: var(--grid-10) !important; } .mr-12 { margin-right: var(--grid-12) !important; }

.mx-1 { margin-left: var(--grid-1) !important; margin-right: var(--grid-1) !important; } .mx-2 { margin-left: var(--grid-2) !important; margin-right: var(--grid-2) !important; }
.mx-3 { margin-left: var(--grid-3) !important; margin-right: var(--grid-3) !important; } .mx-4 { margin-left: var(--grid-4) !important; margin-right: var(--grid-4) !important; }
.mx-8 { margin-left: var(--grid-8) !important; margin-right: var(--grid-8) !important; }

.my-1 { margin-top: var(--grid-1) !important; margin-bottom: var(--grid-1) !important; } .my-2 { margin-top: var(--grid-2) !important; margin-bottom: var(--grid-2) !important; }
.my-3 { margin-top: var(--grid-3) !important; margin-bottom: var(--grid-3) !important; } .my-4 { margin-top: var(--grid-4) !important; margin-bottom: var(--grid-4) !important; }
.my-8 { margin-top: var(--grid-8) !important; margin-bottom: var(--grid-8) !important; }

.p-1 { padding: var(--grid-1) !important; } .p-2 { padding: var(--grid-2) !important; } .p-3 { padding: var(--grid-3) !important; }
.p-4 { padding: var(--grid-4) !important; } .p-5 { padding: var(--grid-5) !important; } .p-6 { padding: var(--grid-6) !important; }
.p-8 { padding: var(--grid-8) !important; } .p-10 { padding: var(--grid-10) !important; } .p-12 { padding: var(--grid-12) !important; }

.pt-1 { padding-top: var(--grid-1) !important; } .pt-2 { padding-top: var(--grid-2) !important; } .pt-3 { padding-top: var(--grid-3) !important; }
.pt-4 { padding-top: var(--grid-4) !important; } .pt-5 { padding-top: var(--grid-5) !important; } .pt-6 { padding-top: var(--grid-6) !important; }
.pt-8 { padding-top: var(--grid-8) !important; } .pt-10 { padding-top: var(--grid-10) !important; } .pt-12 { padding-top: var(--grid-12) !important; }

.pb-1 { padding-bottom: var(--grid-1) !important; } .pb-2 { padding-bottom: var(--grid-2) !important; } .pb-3 { padding-bottom: var(--grid-3) !important; }
.pb-4 { padding-bottom: var(--grid-4) !important; } .pb-5 { padding-bottom: var(--grid-5) !important; } .pb-6 { padding-bottom: var(--grid-6) !important; }
.pb-8 { padding-bottom: var(--grid-8) !important; } .pb-10 { padding-bottom: var(--grid-10) !important; } .pb-12 { padding-bottom: var(--grid-12) !important; }

.pl-1 { padding-left: var(--grid-1) !important; } .pl-2 { padding-left: var(--grid-2) !important; } .pl-3 { padding-left: var(--grid-3) !important; }
.pl-4 { padding-left: var(--grid-4) !important; } .pl-5 { padding-left: var(--grid-5) !important; } .pl-6 { padding-left: var(--grid-6) !important; }
.pl-8 { padding-left: var(--grid-8) !important; } .pl-10 { padding-left: var(--grid-10) !important; } .pl-12 { padding-left: var(--grid-12) !important; }

.pr-1 { padding-right: var(--grid-1) !important; } .pr-2 { padding-right: var(--grid-2) !important; } .pr-3 { padding-right: var(--grid-3) !important; }
.pr-4 { padding-right: var(--grid-4) !important; } .pr-5 { padding-right: var(--grid-5) !important; } .pr-6 { padding-right: var(--grid-6) !important; }
.pr-8 { padding-right: var(--grid-8) !important; } .pr-10 { padding-right: var(--grid-10) !important; } .pr-12 { padding-right: var(--grid-12) !important; }

.px-1 { padding-left: var(--grid-1) !important; padding-right: var(--grid-1) !important; } .px-2 { padding-left: var(--grid-2) !important; padding-right: var(--grid-2) !important; }
.px-3 { padding-left: var(--grid-3) !important; padding-right: var(--grid-3) !important; } .px-4 { padding-left: var(--grid-4) !important; padding-right: var(--grid-4) !important; }
.px-8 { padding-left: var(--grid-8) !important; padding-right: var(--grid-8) !important; }

.py-1 { padding-top: var(--grid-1) !important; padding-bottom: var(--grid-1) !important; } .py-2 { padding-top: var(--grid-2) !important; padding-bottom: var(--grid-2) !important; }
.py-3 { padding-top: var(--grid-3) !important; padding-bottom: var(--grid-3) !important; } .py-4 { padding-top: var(--grid-4) !important; padding-bottom: var(--grid-4) !important; }
.py-8 { padding-top: var(--grid-8) !important; padding-bottom: var(--grid-8) !important; }

.text-center {
    text-align: center;
}

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

.section-subtitle {
    display: inline-block;
    font-size: var(--fs-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--black);
    margin-bottom: 0.5rem;
    background: rgba(0, 0, 0, 0.05);
    padding: 0.3rem 1rem;
    border-radius: 2rem;
}

.section-title {
    font-family: var(--font-heading);
    font-size: var(--fs-h2);
    font-weight: 700;
    color: var(--black);
    line-height: 1.1;
}

.gradient-text {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--grid-2);
    padding: var(--grid-3) var(--grid-6);
    min-height: 48px;
    min-width: 48px;
    max-width: 100%;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: var(--fs-sm);
    cursor: pointer;
    transition: var(--transition-standard);
    border: 1.5px solid transparent;
    font-family: var(--font-main);
    white-space: nowrap;
    text-overflow: ellipsis;
    overflow: hidden;
    text-decoration: none;
    outline: none;
}

.btn:focus-visible {
    box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.4);
}

/* Elite Primary Button (Matte Black Strategy) */
.btn-elite, .primary-btn, .submit-btn {
    background-color: var(--matte-black);
    color: var(--white);
    border-color: var(--matte-black);
}

.btn-elite:hover, .primary-btn:hover, .submit-btn:hover {
    background-color: var(--black);
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 12px 24px -10px rgba(0, 0, 0, 0.4);
}

.btn-elite:active, .primary-btn:active, .submit-btn:active {
    transform: translateY(0) scale(0.98);
}

/* Elite Ghost Button (Refined Stroke) */
.btn-ghost, .secondary-btn {
    background-color: transparent;
    color: var(--black);
    border-color: var(--black);
}

.btn-ghost:hover, .secondary-btn:hover {
    background-color: rgba(0, 0, 0, 0.04);
    transform: translateY(-2px);
}

.btn-ghost:active, .secondary-btn:active {
    transform: translateY(0);
}

/* --- Header Component Moved to index.css --- */

/* --- Hero Section --- */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding: 8rem 0 4rem; /* Increased top padding for mobile header clearance */
    background-color: var(--bg-light);
    overflow: hidden;
    width: 100%;
}

@media (min-width: 1024px) {
    .hero-section {
        padding-top: 5rem;
    }
}

/* Abstract Background Shapes (Elite Minimalist Subtle Glows) */
.hero-bg-shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.3;
    z-index: 1;
}

.shape-1 {
    top: -10%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: rgba(0, 0, 0, 0.05);
    animation: float 12s infinite alternate;
}

.shape-2 {
    bottom: 10%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: rgba(71, 85, 105, 0.08);
    animation: float 18s infinite alternate-reverse;
}

@keyframes float {
    0% { transform: translate(0, 0); }
    100% { transform: translate(20px, 40px); }
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr;
    align-items: center;
    gap: var(--grid-6);
    position: relative;
    z-index: 2;
}

@media (min-width: 1024px) {
    .hero-grid {
        grid-template-columns: 1.2fr 0.8fr;
        gap: var(--grid-8);
    }
}

.badge {
    display: inline-block;
    background: #fff;
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-heading);
    box-shadow: var(--shadow-sm);
    margin-bottom: 1.5rem;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: var(--fs-hero);
    font-weight: 800;
    color: var(--black);
    line-height: 1.1;
    margin-bottom: var(--grid-4);
    letter-spacing: -0.02em;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.hero-sub-title {
    display: block;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--slate-400);
    margin-bottom: var(--grid-1);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.hero-main-title {
    display: block;
    background: linear-gradient(to bottom, var(--black), var(--slate-600));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-name {
    font-weight: 700;
    letter-spacing: 1px;
    color: #000000;
    -webkit-text-fill-color: #000000; /* Overrides gradient in parent for Elite Minimalist aesthetic */
}

.hero-name {
    font-weight: 700;
    letter-spacing: 1px;
    color: #000000;
    -webkit-text-fill-color: #000000; /* Overrides gradient in parent for Elite Minimalist aesthetic */
}

.typing-text {
    display: inline-block;
    min-width: 10px;
}

.hero-lead {
    font-size: 1.125rem;
    color: var(--text-muted);
    margin-bottom: 0;
    max-width: 600px;
}

.name-highlight {
    color: var(--primary);
    font-weight: 700;
}

.hero-btns {
    display: flex;
    gap: 1rem;
}

.hero-visual {
    position: relative;
    display: flex;
    justify-content: flex-end;
    align-items: center;
}

.profile-frame {
    position: relative;
    width: 100%;
    max-width: 420px;
    aspect-ratio: 4/5;
    z-index: 2;
}

.frame-border {
    position: absolute;
    inset: -12px;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    z-index: -1;
    transition: var(--transition-standard);
}

.profile-image-mask {
    width: 100%;
    height: 100%;
    max-width: 100%;
    object-fit: cover;
    /* Refined Portrait Masking */
    clip-path: inset(0 0 0 0 round 160px 160px 12px 12px);
    -webkit-mask-image: linear-gradient(to bottom, black 85%, transparent 100%);
    mask-image: linear-gradient(to bottom, black 85%, transparent 100%);
    filter: grayscale(100%) brightness(0.9);
    transition: var(--transition-standard);
}

.profile-gradient {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 30%;
    background: linear-gradient(to top, var(--white) 0%, transparent 100%);
    z-index: 3;
    pointer-events: none;
}

.hero-visual:hover .profile-image-mask {
    filter: grayscale(0%) brightness(1);
    transform: translateY(-8px);
}

.hero-visual:hover .frame-border {
    inset: -24px;
    border-color: var(--black);
}

.hero-blob {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120%;
    height: 120%;
    background: radial-gradient(circle, rgba(79,70,229,0.15) 0%, rgba(255,255,255,0) 70%);
    z-index: 1;
}



/* --- SECTION HEADERS (Elite) --- */
.section-header-elite {
    margin-bottom: var(--grid-10);
}

.section-marker {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    color: var(--slate-400);
    margin-bottom: var(--grid-2);
    text-transform: uppercase;
}

.section-title-minimal {
    font-family: var(--font-heading);
    font-size: var(--fs-h2);
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--black);
    line-height: 1.1;
}

/* --- ABOUT ELITE --- */
.about-elite {
    background: var(--white);
}

.about-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--grid-8);
    align-items: center;
}

@media (min-width: 1024px) {
    .about-layout {
        grid-template-columns: 1fr 1.2fr;
        gap: var(--grid-12);
    }
}

.about-visual {
    position: relative;
}

.visual-card {
    background: var(--matte-black);
    color: var(--white);
    padding: var(--grid-6);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-floating);
    max-width: 400px;
}

.card-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--grid-4);
    opacity: 0.6;
}

.card-stats {
    display: flex;
    gap: var(--grid-8);
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-value {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1;
}

.stat-name {
    font-size: 0.8125rem;
    font-weight: 500;
    opacity: 0.7;
    margin-top: var(--grid-1);
}

.about-narrative {
    display: flex;
    flex-direction: column;
    gap: var(--grid-4);
}

.section-title-elite {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1.2;
    color: var(--black);
}

.section-title-elite span {
    color: var(--slate-400);
}

.narrative-lead {
    font-size: 1.25rem;
    color: var(--text-muted);
    font-weight: 500;
}

.narrative-details p {
    color: var(--text-muted);
    margin-bottom: var(--grid-4);
}

.link-premium {
    display: inline-flex;
    align-items: center;
    gap: var(--grid-2);
    font-weight: 700;
    font-size: 0.875rem;
    color: var(--black);
    border-bottom: 2px solid var(--black);
    padding-bottom: 2px;
    transition: var(--transition-standard);
}

.link-premium:hover {
    color: var(--accent-blue);
    border-color: var(--accent-blue);
}

/* --- FLAGSHIP SHOWCASE (Web IDE) --- */
.showcase-section {
    background: var(--white);
}

.showcase-wrapper {
    max-width: 1200px;
    margin: 0 auto;
}

.showcase-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--grid-8);
    align-items: center;
}

@media (min-width: 1024px) {
    .showcase-grid {
        grid-template-columns: 1.1fr 0.9fr;
        gap: var(--grid-12);
    }
}

.showcase-visual {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-md);
}

.showcase-image {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: var(--transition-standard);
}

.showcase-visual:hover .showcase-image {
    transform: scale(1.015) translateY(-4px);
    box-shadow: 0 32px 64px -16px rgba(0, 0, 0, 0.15);
}

.showcase-badge {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--slate);
    background: var(--bg-soft);
    padding: 0.4rem 1rem;
    border-radius: 2rem;
    margin-bottom: var(--grid-3);
}

.showcase-title {
    font-family: var(--font-heading);
    font-size: var(--fs-h3);
    font-weight: 800;
    color: var(--matte-black);
    margin-bottom: var(--grid-3);
    line-height: 1.2;
}

.showcase-lead {
    font-size: 1.125rem;
    color: var(--slate);
    margin-bottom: var(--grid-6);
}

.feature-grid {
    display: grid;
    gap: var(--grid-5);
    margin-bottom: var(--grid-8);
}

.feature-card {
    display: flex;
    align-items: flex-start;
    gap: var(--grid-4);
}

.feature-icon-box {
    color: var(--matte-black);
    font-size: 1.5rem;
    width: 32px;
    display: flex;
    justify-content: center;
    padding-top: 0.15rem; /* Precision alignment with heading cap height */
    flex-shrink: 0;
}

.feature-text h4 {
    font-family: var(--font-heading);
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--matte-black);
    margin-bottom: 0.25rem;
}

.feature-text p {
    color: var(--slate);
    font-size: 0.9375rem;
    line-height: 1.6;
}

.showcase-actions {
    display: flex;
    gap: var(--grid-4);
    margin-top: var(--grid-2);
}

@media (max-width: 768px) {
    .showcase-actions {
        justify-content: center;
    }
}

/* --- App Store Button (Apple Standard) --- */
.btn-app-store {
    background-color: var(--matte-black);
    color: var(--white);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 0.65rem 1.6rem;
    display: inline-flex;
    align-items: center;
    gap: 0.85rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-align: left;
    min-height: 56px;
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.btn-app-store:hover {
    background-color: #121212;
    transform: translateY(-3px);
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.2);
    border-color: rgba(255, 255, 255, 0.3);
}

.btn-app-store:active {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.btn-app-store .fa-apple {
    font-size: 1.9rem;
    margin-bottom: 1px;
    flex-shrink: 0;
}

.app-store-text {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}

.app-store-text span {
    font-size: 0.65rem;
    text-transform: uppercase;
    font-weight: 600;
    letter-spacing: 0.08em;
    opacity: 0.9;
}

.app-store-text strong {
    font-size: 1.2rem;
    font-weight: 600;
    font-family: var(--font-heading);
    letter-spacing: -0.01em;
}

/* --- EXPERTISE SECTION --- */
.expertise-section {
    background: var(--bg-soft);
}

.expertise-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--grid-4);
}

@media (min-width: 768px) {
    .expertise-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--grid-6);
    }
}

@media (min-width: 1024px) {
    .expertise-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--grid-6);
    }
}

.expertise-item {
    padding: var(--grid-8);
    background: var(--white);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    transition: var(--transition-standard);
    position: relative;
}

.expertise-item:hover {
    border-color: var(--black);
    transform: translateY(-4px);
    box-shadow: var(--shadow-premium);
}

.expertise-item.active {
    background: var(--matte-black);
    color: var(--white);
    border-color: var(--matte-black);
}

.expertise-count {
    font-family: var(--font-heading);
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--slate-400);
    margin-bottom: var(--grid-4);
}

.expertise-item.active .expertise-count {
    color: rgba(255, 255, 255, 0.4);
}

.expertise-title {
    font-family: var(--font-heading);
    font-size: var(--fs-h3);
    font-weight: 700;
    margin-bottom: var(--grid-3);
}

.expertise-desc {
    font-size: 0.9375rem;
    color: var(--text-muted);
    margin-bottom: var(--grid-4);
}

.expertise-item.active .expertise-desc {
    color: rgba(255, 255, 255, 0.7);
}

.expertise-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--grid-1);
}

.expertise-list li {
    font-size: 0.8125rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--grid-2);
}

.expertise-list li::before {
    content: '';
    width: 4px;
    height: 4px;
    background: var(--black);
    border-radius: 50%;
}

.expertise-item.active .expertise-list li::before {
    background: var(--white);
}



/* --- SKILLS ELITE --- */
.skills-elite {
    background: var(--bg-soft);
}

.skills-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--grid-6);
}

@media (min-width: 1024px) {
    .skills-layout {
        grid-template-columns: 1fr 1.5fr;
        gap: var(--grid-12);
    }
}

.skills-lead {
    font-size: 1.125rem;
    color: var(--text-muted);
    margin-top: var(--grid-3);
}

.skills-categories {
    display: flex;
    flex-direction: column;
    gap: var(--grid-6);
}

.skill-tier {
    padding-bottom: var(--grid-6);
    border-bottom: 1px solid var(--border-subtle);
}

.skill-tier:last-child {
    border-bottom: none;
}

.tier-name {
    font-family: var(--font-heading);
    font-size: 0.8125rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--slate-400);
    margin-bottom: var(--grid-3);
}

.tier-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--grid-2);
}

.tier-tags span {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--black);
    background: var(--white);
    padding: var(--grid-1) var(--grid-3);
    border-radius: var(--radius-sm);
    transition: var(--transition-standard);
    border: 1px solid var(--border-subtle);
}

.tier-tags span:hover {
    background: var(--black);
    color: var(--white);
    border-color: var(--black);
    transform: translateY(-2px);
}

/* --- TESTIMONIALS ELITE --- */
.testimonials-section {
    background: var(--white);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--grid-6);
}

@media (min-width: 768px) {
    .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--grid-6);
    }
}

@media (min-width: 1024px) {
    .testimonials-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--grid-6);
    }
}

.testimonial-card {
    background: var(--white);
    padding: var(--grid-6);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-subtle);
    transition: var(--transition-standard);
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-premium);
}

.quote-icon {
    font-size: 1.5rem;
    color: var(--slate-100);
    margin-bottom: var(--grid-3);
}

.testimonial-text {
    font-size: var(--fs-body);
    color: var(--text-muted);
    font-style: italic;
    margin-bottom: var(--grid-6);
    line-height: 1.8;
}

.testimonial-user {
    display: flex;
    align-items: center;
    gap: var(--grid-3);
}

.testimonial-user img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
    border: 1px solid var(--border-subtle);
}

.user-info h4 {
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--black);
}

.user-info span {
    font-size: 0.75rem;
    color: var(--slate-400);
}

/* --- Contact Section --- */
.contact-section {
    background-color: var(--bg-light);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--grid-8);
    background: #fff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-floating);
    padding: var(--grid-6);
}

@media (min-width: 1024px) {
    .contact-wrapper {
        grid-template-columns: 1fr 1.5fr;
        gap: 4rem;
        padding: 4rem;
    }
}

.contact-details {
    margin-top: 3rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.icon-circle {
    width: 50px;
    height: 50px;
    background: rgba(0, 0, 0, 0.04);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--matte-black);
    font-size: 1.2rem;
}

.contact-item h4 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-heading);
}

.contact-item p {
    font-size: 0.95rem;
    color: var(--text-main);
}

.contact-form-container h3 {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-heading);
    margin-bottom: 2rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-heading);
    margin-bottom: 0.5rem;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
    width: 100%;
    padding: 1rem 1.2rem;
    border-radius: 0.8rem;
    border: 1px solid var(--black);
    background: var(--bg-light);
    font-family: var(--font-main);
    font-size: 1rem;
    color: var(--black);
    transition: all 0.3s ease;
    appearance: none;
    -webkit-appearance: none;
}

.contact-form select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='rgba(0,0,0,0.5)' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1.25rem center;
    background-size: 14px;
    cursor: pointer;
    padding-right: 3.5rem !important; /* Elite spacing for chevron */
    color: var(--black);
}

/* Placeholder state styling */
.contact-form select:invalid,
.contact-form select option[value=""] {
    color: var(--slate-400);
}

.contact-form select option {
    color: var(--black);
    background-color: var(--white);
    padding: 1rem;
}

@media (max-width: 768px) {
    .contact-form select {
        padding: 0.875rem 1rem;
        font-size: 0.9375rem;
    }
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--black);
    background: var(--white);
    box-shadow: 0 0 0 4px rgba(0, 0, 0, 0.1);
}

.submit-btn {
    width: 100%;
}

.contact-form input.invalid,
.contact-form textarea.invalid {
    border-color: #ef4444; /* red */
}

.contact-form input.invalid:focus,
.contact-form textarea.invalid:focus {
    border-color: #ef4444;
    box-shadow: 0 0 0 4px rgba(239, 68, 68, 0.1);
}

#form-status {
    margin-top: 1rem;
    padding: 0.8rem 1.2rem;
    border-radius: 0.8rem;
    font-size: 0.9rem;
    font-weight: 500;
    text-align: center;
    display: none;
}

#form-status.success {
    background-color: #d1fae5;
    color: #065f46;
    display: block;
}

#form-status.error {
    background-color: #fee2e2;
    color: #991b1b;
    display: block;
}

/* --- Footer --- */
.footer {
    background: #1e1e2e; /* Dark Footer for contrast */
    color: #a0a0b0;
    padding: 5rem 0 2rem;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 3rem;
    flex-wrap: wrap;
    gap: 3rem;
}

.footer-logo a {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 700;
    color: #fff;
    display: block;
    margin-bottom: 1rem;
}

.footer-logo p {
    font-size: 0.95rem;
    max-width: 300px;
}

.footer-nav {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.footer-links {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
}

.footer-links a {
    color: #fff;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.3s ease;
}

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

.footer-socials {
    display: flex;
    gap: 1rem;
}

.footer-socials a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.1rem;
    transition: all 0.3s ease;
}

.footer-socials a:hover {
    background: var(--primary);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(79, 70, 229, 0.4);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.pulse {
    animation: pulse-animation 1.5s infinite;
}

@keyframes pulse-animation {
    0% { transform: scale(1); }
    50% { transform: scale(1.2); }
    100% { transform: scale(1); }
}

/* --- ELITE SCROLL REVEAL ANIMATIONS --- */
/* This custom reveal system utilizes Intersection Observers for high-performance entrance effects */
.expertise-item,
.project-card,
.skill-tier,
.testimonial-card,
.contact-info,
.contact-form-container {
    opacity: 0;
    transform: translateY(32px);
    transition: opacity 1.2s cubic-bezier(0.16, 1, 0.3, 1), 
                transform 1.2s cubic-bezier(0.16, 1, 0.3, 1);
    will-change: opacity, transform;
}

.expertise-item.revealed,
.project-card.revealed,
.skill-tier.revealed,
.testimonial-card.revealed,
.contact-info.revealed,
.contact-form-container.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* Rhythmic staggered delays for grid layouts */
.expertise-item.revealed:nth-child(2), 
.project-card.revealed:nth-child(2), 
.testimonial-card.revealed:nth-child(2) {
    transition-delay: 0.15s;
}

.expertise-item.revealed:nth-child(3), 
.project-card.revealed:nth-child(3), 
.testimonial-card.revealed:nth-child(3) {
    transition-delay: 0.3s;
}

/* --- ELITE RESPONSIVE ADAPTATION (Refined Mobile-First) --- */

/* 
   MOBILE BASELINE (Default Styles)
   Optimized for < 768px viewports
*/
.hero-cta-group {
    display: flex;
    flex-direction: column;
    gap: var(--grid-3);
    width: 100%;
    margin-top: var(--grid-4);
}

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

.hero-visual {
    order: -1;
    display: flex;
    justify-content: center;
    margin-bottom: var(--grid-8);
}

.showcase-grid {
    grid-template-columns: 1fr;
    gap: var(--grid-6);
}

.feature-grid {
    grid-template-columns: 1fr;
    gap: var(--grid-5);
}

.expertise-grid, .testimonials-grid {
    grid-template-columns: 1fr;
    gap: var(--grid-4);
}

.about-layout {
    grid-template-columns: 1fr;
    gap: var(--grid-6);
    text-align: center;
}

.about-visual {
    display: flex;
    justify-content: center;
}

.visual-card {
    margin: 0 auto;
}

/* 
   TABLET ADAPTATION (>= 768px)
   Transitioning to multi-column patterns
*/
@media (min-width: 768px) {
    .container {
        padding: 0 var(--grid-5);
    }

    .section-padding {
        padding: var(--grid-8) 0;
    }

    .hero-section {
        padding: 8rem 0 6rem;
    }

    .hero-cta-group {
        flex-direction: row;
        justify-content: center;
        width: auto;
    }

    .expertise-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--grid-6);
    }

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

    .showcase-grid {
        gap: var(--grid-8);
    }

    .feature-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--grid-6);
    }
}

/* 
   DESKTOP PRECISION (>= 1024px)
   Final Elite Layout Configurations
*/
@media (min-width: 1024px) {
    .section-padding {
        padding: var(--grid-12) 0;
    }

    .hero-grid {
        grid-template-columns: 1.2fr 0.8fr;
        text-align: left;
        gap: var(--grid-8);
    }

    .hero-content {
        text-align: left;
    }

    .hero-cta-group {
        justify-content: flex-start;
        margin-top: var(--grid-6);
    }

    .hero-visual {
        order: 1;
        justify-content: flex-end;
        margin-bottom: 0;
    }

    .about-layout {
        grid-template-columns: 1fr 1.2fr;
        text-align: left;
        gap: var(--grid-12);
    }

    .about-visual {
        justify-content: flex-start;
    }

    .showcase-grid {
        grid-template-columns: 1.1fr 0.9fr;
        gap: var(--grid-12);
    }

    /* Keep features in single column within the 2-col showcase content area for vertical rhythm */
    .feature-grid {
        grid-template-columns: 1fr;
    }

    .expertise-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .testimonials-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .skills-layout {
        grid-template-columns: 1fr 1.5fr;
        gap: var(--grid-12);
    }

    .contact-wrapper {
        grid-template-columns: 1fr 1.5fr;
        padding: var(--grid-10);
    }

    .footer-content {
        flex-direction: row;
        justify-content: space-between;
    }

    .footer-nav {
        align-items: flex-end;
    }
}

/* Ultra-Small Devices (iPhone SE, etc.) */
@media (max-width: 375px) {
    :root {
        --fs-hero: clamp(2rem, 12vw, 2.5rem);
    }

    .container {
        padding: 0 1.25rem;
    }

    .btn {
        padding: var(--grid-2) var(--grid-4);
        font-size: 0.75rem;
    }

    .nav-link {
        font-size: clamp(1.5rem, 10vw, 2.25rem) !important;
    }

    .hero-name {
        letter-spacing: 0.5px;
    }
}