/* ===========================================
   CREATIVE PROFESSIONAL DATA ANALYST PORTFOLIO - COMPLETE
   Design Philosophy: Bold yet Professional, Innovative yet Trustworthy
   All z-index issues resolved + Roadmap page styles integrated
   =========================================== */

/* --- 1. CREATIVE PROFESSIONAL DESIGN TOKENS --- */
:root {
    /* Sophisticated Color Palette - Deep Navy + Vibrant Accents */
    --bg-deepest: #0a1628;
    --bg-primary: #0f1c2e;
    --bg-secondary: #1a2332;
    --bg-elevated: #243447;
    --bg-accent-soft: #2a3f5f;
    
    /* Vibrant Accent System */
    --accent-cyan: #06b6d4;
    --accent-blue: #3b82f6;
    --accent-purple: #8b5cf6;
    --accent-pink: #ec4899;
    --accent-emerald: #10b981;
    --accent-amber: #f59e0b;
    
    /* Creative Gradients */
    --gradient-primary: linear-gradient(135deg, #06b6d4 0%, #3b82f6 100%);
    --gradient-creative: linear-gradient(135deg, #ec4899 0%, #8b5cf6 50%, #3b82f6 100%);
    --gradient-success: linear-gradient(135deg, #10b981 0%, #06b6d4 100%);
    --gradient-warm: linear-gradient(135deg, #f59e0b 0%, #ec4899 100%);
    --gradient-overlay: linear-gradient(135deg, rgba(6, 182, 212, 0.1) 0%, rgba(139, 92, 246, 0.05) 50%, rgba(59, 130, 246, 0.1) 100%);
    
    /* Text Hierarchy */
    --text-primary: #f8fafc;
    --text-secondary: #e2e8f0;
    --text-muted: #94a3b8;
    --text-subtle: #64748b;
    --text-accent: #06b6d4;
    
    /* Border System */
    --border-subtle: rgba(255, 255, 255, 0.05);
    --border-medium: rgba(255, 255, 255, 0.1);
    --border-strong: rgba(255, 255, 255, 0.15);
    --border-accent: rgba(6, 182, 212, 0.3);
    --border-glow: rgba(6, 182, 212, 0.5);
    
    /* Shadow System */
    --shadow-xs: 0 1px 3px rgba(0, 0, 0, 0.2);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.35);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.4);
    --shadow-2xl: 0 24px 64px rgba(0, 0, 0, 0.45);
    --shadow-glow-cyan: 0 0 40px rgba(6, 182, 212, 0.25);
    --shadow-glow-purple: 0 0 40px rgba(139, 92, 246, 0.25);
    --shadow-glow-multi: 0 0 60px rgba(6, 182, 212, 0.2), 0 0 80px rgba(139, 92, 246, 0.15);
    
    /* Spacing System (8px base) */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 4rem;
    --space-3xl: 6rem;
    --space-4xl: 8rem;
    
    /* Typography Scale */
    --font-xs: 0.75rem;
    --font-sm: 0.875rem;
    --font-base: 1rem;
    --font-md: 1.125rem;
    --font-lg: 1.25rem;
    --font-xl: 1.5rem;
    --font-2xl: 2rem;
    --font-3xl: 2.5rem;
    --font-4xl: 3.5rem;
    --font-5xl: 4.5rem;
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 600ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-2xl: 28px;
    --radius-full: 9999px;
}

/* --- 2. RESET & BASE --- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    scroll-padding-top: 90px;
}

body {
    background: var(--bg-primary);
    background-image: 
        radial-gradient(ellipse at top left, rgba(6, 182, 212, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at bottom right, rgba(139, 92, 246, 0.06) 0%, transparent 50%),
        radial-gradient(circle at 30% 60%, rgba(59, 130, 246, 0.04) 0%, transparent 40%);
    background-attachment: fixed;
    color: var(--text-secondary);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', sans-serif;
    font-size: var(--font-base);
    line-height: 1.7;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    top: 10%;
    right: 5%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.03) 0%, transparent 70%);
    border-radius: 50%;
    filter: blur(60px);
    pointer-events: none;
    animation: floatSlow 20s ease-in-out infinite;
    z-index: 0;
}

body::after {
    content: '';
    position: fixed;
    bottom: 15%;
    left: 8%;
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.04) 0%, transparent 70%);
    border-radius: 50%;
    filter: blur(50px);
    pointer-events: none;
    animation: floatSlow 25s ease-in-out infinite reverse;
    z-index: 0;
}

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

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

a:focus-visible {
    outline: 2px solid var(--accent-cyan);
    outline-offset: 4px;
    border-radius: var(--radius-sm);
}

ul {
    list-style: none;
}

::selection {
    background: linear-gradient(135deg, rgba(6, 182, 212, 0.4) 0%, rgba(139, 92, 246, 0.4) 100%);
    color: var(--text-primary);
}

/* --- 3. NAVIGATION --- */
nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md) 6%;
    background: rgba(15, 28, 46, 0.85);
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    border-bottom: 1px solid var(--border-medium);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-md);
}

nav::before {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-creative);
    opacity: 0.6;
}

.logo {
    font-size: var(--font-xl);
    font-weight: 800;
    letter-spacing: -0.5px;
    color: var(--text-primary);
    position: relative;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo::before {
    content: '';
    width: 8px;
    height: 8px;
    background: var(--gradient-primary);
    border-radius: 50%;
    box-shadow: var(--shadow-glow-cyan);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.3); opacity: 0.7; }
}

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

.nav-links {
    display: flex;
    gap: var(--space-sm);
    align-items: center;
}

.nav-links a {
    font-weight: 600;
    font-size: var(--font-sm);
    letter-spacing: 0.5px;
    text-transform: uppercase;
    color: var(--text-muted);
    position: relative;
    padding: 0.75rem 1.25rem;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 8px;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 70%;
    height: 2px;
    background: var(--gradient-primary);
    border-radius: 2px;
    transition: transform var(--transition-base);
}

.nav-links a:hover {
    color: var(--accent-cyan);
    background: rgba(6, 182, 212, 0.05);
}

.nav-links a:hover::after {
    transform: translateX(-50%) scaleX(1);
}

.nav-links a.active {
    color: var(--text-primary);
    background: rgba(6, 182, 212, 0.1);
    box-shadow: inset 0 0 0 1px var(--border-accent);
}

.nav-links a.active::after {
    transform: translateX(-50%) scaleX(1);
    box-shadow: var(--shadow-glow-cyan);
}

.hamburger {
    display: none;
    cursor: pointer;
    font-size: 1.75rem;
    color: var(--accent-cyan);
    padding: 0.5rem;
    transition: all var(--transition-base);
}

.hamburger:hover {
    transform: scale(1.1) rotate(90deg);
}

/* --- 4. BUTTONS --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.625rem;
    padding: 1rem 2.25rem;
    border-radius: var(--radius-xl);
    font-weight: 700;
    font-size: var(--font-base);
    cursor: pointer;
    border: none;
    transition: all var(--transition-base);
    letter-spacing: 0.3px;
    position: relative;
    overflow: hidden;
    text-transform: none;
    color: white;
    isolation: isolate;
}

.btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, transparent 50%, rgba(255, 255, 255, 0.1) 100%);
    background-size: 200% 200%;
    background-position: 0% 50%;
    transition: background-position var(--transition-slow);
    z-index: -1;
}

.btn:hover::before {
    background-position: 100% 50%;
}

.btn > * {
    position: relative;
    z-index: 1;
}

.primary-btn {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-md), var(--shadow-glow-cyan);
    border: 1px solid rgba(6, 182, 212, 0.3);
}

.primary-btn:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: var(--shadow-xl), var(--shadow-glow-multi);
    color: white;
}

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

.secondary-btn {
    background: transparent;
    border: 2px solid var(--accent-cyan);
    color: var(--accent-cyan);
    position: relative;
}

.secondary-btn::after {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity var(--transition-base);
    z-index: -1;
    border-radius: var(--radius-xl);
}

.secondary-btn:hover {
    color: white;
    border-color: transparent;
    transform: translateY(-3px) scale(1.02);
    box-shadow: var(--shadow-md), var(--shadow-glow-cyan);
}

.secondary-btn:hover::after {
    opacity: 1;
}

/* --- 5. HERO SECTION --- */
.hero {
    min-height: 92vh;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: var(--space-3xl) var(--space-md);
    position: relative;
    background: url('Background3.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(10, 22, 40, 0.85) 0%, rgba(26, 35, 50, 0.75) 50%, rgba(15, 28, 46, 0.85) 100%);
}

.hero::after {
    content: '';
    position: absolute;
    top: 15%;
    right: 10%;
    width: 500px;
    height: 500px;
    background: var(--gradient-creative);
    opacity: 0.08;
    border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
    filter: blur(80px);
    animation: morph 15s ease-in-out infinite;
}

@keyframes morph {
    0%, 100% {
        border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
        transform: rotate(0deg);
    }
    50% {
        border-radius: 70% 30% 30% 70% / 70% 70% 30% 30%;
        transform: rotate(180deg);
    }
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 1000px;
}

.hero h1 {
    font-size: clamp(2.5rem, 7vw, 5rem);
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: var(--space-lg);
    letter-spacing: -2.5px;
    position: relative;
}

.greeting {
    display: block;
    color: var(--accent-cyan);
    font-weight: 700;
    font-size: clamp(1rem, 2.5vw, 1.5rem);
    margin-bottom: var(--space-sm);
    letter-spacing: 4px;
    text-transform: uppercase;
    animation: fadeSlideDown 0.8s ease-out;
}

@keyframes fadeSlideDown {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

.my-name {
    background: var(--gradient-creative);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
    position: relative;
    animation: fadeSlideUp 1s ease-out 0.2s backwards;
}

@keyframes fadeSlideUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

.my-name::after {
    content: '';
    position: absolute;
    bottom: -12px;
    left: 0;
    width: 100%;
    height: 6px;
    background: var(--gradient-creative);
    opacity: 0.4;
    border-radius: var(--radius-full);
    filter: blur(4px);
}

.hero p {
    font-size: var(--font-md);
    color: var(--text-secondary);
    margin-bottom: var(--space-2xl);
    max-width: 750px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.9;
    animation: fadeSlideUp 1s ease-out 0.4s backwards;
}

.hero-buttons {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeSlideUp 1s ease-out 0.6s backwards;
}

.highlight {
    color: var(--accent-emerald);
    font-weight: 700;
}

/* --- 6. ABOUT SECTION --- */
.about-section {
    padding: var(--space-4xl) var(--space-md);
    position: relative;
}

.about-section::before {
    content: '';
    position: absolute;
    top: var(--space-3xl);
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 6px;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-glow-cyan);
}

.about-container {
    max-width: 1300px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 420px 1fr;
    align-items: center;
    gap: var(--space-3xl);
    background: var(--bg-secondary);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-2xl);
    padding: var(--space-3xl);
    box-shadow: var(--shadow-xl);
    position: relative;
    overflow: hidden;
}

.about-container::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 300px;
    height: 300px;
    background: var(--gradient-creative);
    opacity: 0.05;
    border-radius: 0 var(--radius-2xl) 0 100%;
}

.about-image {
    position: relative;
    z-index: 1;
}

.about-image::before {
    content: '';
    position: absolute;
    inset: -20px;
    background: var(--gradient-primary);
    border-radius: 50%;
    filter: blur(40px);
    opacity: 0.3;
    z-index: 0;
}

.about-image::after {
    content: '';
    position: absolute;
    inset: -8px;
    background: conic-gradient(from 0deg, var(--accent-cyan) 0%, var(--accent-purple) 33%, var(--accent-pink) 66%, var(--accent-cyan) 100%);
    border-radius: 50%;
    z-index: 0;
    animation: rotate 8s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.about-image img {
    width: 100%;
    max-width: 400px;
    aspect-ratio: 1;
    object-fit: cover;
    border-radius: 50%;
    border: 6px solid var(--bg-primary);
    box-shadow: var(--shadow-2xl);
    transition: transform var(--transition-slow);
    position: relative;
    z-index: 1;
}

.about-image img:hover {
    transform: scale(1.05);
}

.about-content {
    position: relative;
    z-index: 1;
}

.about-content h2 {
    font-size: var(--font-3xl);
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
    letter-spacing: -1.5px;
    line-height: 1.2;
}

.about-content h3 {
    font-size: var(--font-xl);
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: var(--space-md);
}

.about-content p {
    color: var(--text-secondary);
    line-height: 1.9;
    margin-bottom: var(--space-md);
    font-size: var(--font-md);
}

.about-socials {
    margin-top: var(--space-xl);
    display: flex;
    gap: var(--space-md);
    align-items: center;
    flex-wrap: wrap;
}

.about-socials a {
    color: var(--accent-cyan);
    font-weight: 600;
    font-size: var(--font-base);
    padding: 0.875rem 1.75rem;
    border-radius: var(--radius-xl);
    border: 2px solid var(--border-accent);
    background: rgba(6, 182, 212, 0.05);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    isolation: isolate;
}

.about-socials a::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity var(--transition-base);
    z-index: -1;
}

.about-socials a:hover {
    border-color: transparent;
    color: white;
    transform: translateY(-3px);
    box-shadow: var(--shadow-md), var(--shadow-glow-cyan);
}

.about-socials a:hover::before {
    opacity: 1;
}

.about-socials a > * {
    position: relative;
    z-index: 1;
}

/* --- 7. PAGE STRUCTURE --- */
.page-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--space-4xl) var(--space-lg);
    width: 100%;
    flex: 1;
    position: relative;
    z-index: 1;
}

.page-title {
    font-size: var(--font-4xl);
    font-weight: 900;
    color: var(--text-primary);
    margin-bottom: var(--space-3xl);
    text-align: center;
    padding-bottom: var(--space-xl);
    position: relative;
    letter-spacing: -2px;
}

.page-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 6px;
    background: var(--gradient-creative);
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-glow-multi);
}

/* --- 8. PROJECTS GRID --- */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
    gap: var(--space-xl);
}

.project-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    transition: all var(--transition-slow);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.project-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: var(--gradient-creative);
    opacity: 0;
    transition: all var(--transition-slow);
    border-radius: 50%;
}

.project-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-slow);
}

.project-card:hover {
    transform: translateY(-12px);
    border-color: var(--border-accent);
    box-shadow: var(--shadow-2xl), var(--shadow-glow-multi);
}

.project-card:hover::before {
    opacity: 0.08;
    top: -20%;
    right: -20%;
}

.project-card:hover::after {
    transform: scaleX(1);
}

.project-card h3 {
    font-size: var(--font-xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
    position: relative;
    z-index: 1;
    transition: color var(--transition-base);
}

.project-card:hover h3 {
    color: var(--accent-cyan);
}

.project-card p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--space-lg);
    position: relative;
    z-index: 1;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.625rem;
    margin-top: var(--space-md);
    position: relative;
    z-index: 1;
}

.tech-tag {
    font-size: var(--font-xs);
    font-weight: 600;
    padding: 0.5rem 1rem;
    background: var(--bg-elevated);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-full);
    color: var(--accent-cyan);
    transition: all var(--transition-base);
    isolation: isolate;
}

.tech-tag:hover {
    background: rgba(6, 182, 212, 0.1);
    border-color: var(--accent-cyan);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

/* --- 9. RESUME PAGE --- */
.resume-grid {
    display: flex;
    flex-direction: column;
    gap: var(--space-2xl);
}

.resume-section {
    background: var(--bg-secondary);
    padding: var(--space-2xl);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-medium);
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.resume-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 6px;
    height: 100%;
    background: var(--gradient-primary);
    transform: scaleY(0);
    transform-origin: top;
    transition: transform var(--transition-slow);
}

.resume-section:hover {
    border-color: var(--border-accent);
    box-shadow: var(--shadow-xl), var(--shadow-glow-cyan);
}

.resume-section:hover::before {
    transform: scaleY(1);
}

.resume-section h2 {
    font-size: var(--font-2xl);
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: var(--space-xl);
    position: relative;
    z-index: 1;
    padding-bottom: var(--space-sm);
}

.resume-section h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 80px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
}

.job-card {
    background: var(--bg-elevated);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--accent-cyan);
    margin-bottom: var(--space-lg);
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
    position: relative;
}

.job-card::before {
    content: '';
    position: absolute;
    left: -4px;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--gradient-creative);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.job-card:hover {
    transform: translateX(12px);
    box-shadow: var(--shadow-md);
}

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

.job-card h3 {
    font-size: var(--font-xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
}

.job-meta {
    color: var(--text-muted);
    font-size: var(--font-sm);
    margin-bottom: var(--space-md);
    font-weight: 500;
}

.skills-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.skill-tag {
    background: var(--bg-primary);
    border: 2px solid var(--border-strong);
    padding: 0.75rem 1.25rem;
    border-radius: var(--radius-xl);
    font-size: var(--font-base);
    font-weight: 600;
    color: var(--accent-cyan);
    transition: all var(--transition-base);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    isolation: isolate;
}

.skill-tag::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity var(--transition-base);
    z-index: -1;
}

.skill-tag:hover {
    border-color: transparent;
    color: white;
    transform: translateY(-3px);
    box-shadow: var(--shadow-md), var(--shadow-glow-cyan);
}

.skill-tag:hover::before {
    opacity: 1;
}

.skill-tag > * {
    position: relative;
    z-index: 1;
}

/* --- 10. BLOG PAGE --- */
.blog-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-2xl);
}

.blog-post {
    background: var(--bg-secondary);
    padding: var(--space-2xl);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-medium);
    transition: all var(--transition-base);
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

.blog-post::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: var(--gradient-creative);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-slow);
}

.blog-post:hover {
    border-color: var(--border-accent);
    box-shadow: var(--shadow-xl), var(--shadow-glow-multi);
    transform: translateY(-6px);
}

.blog-post:hover::before {
    transform: scaleX(1);
}

.blog-post h3 {
    font-size: var(--font-2xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
    position: relative;
    z-index: 1;
    transition: color var(--transition-base);
}

.blog-post:hover h3 {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.blog-meta {
    color: var(--text-muted);
    font-size: var(--font-sm);
    margin-bottom: var(--space-md);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    position: relative;
    z-index: 1;
}

.blog-post p {
    color: var(--text-secondary);
    line-height: 1.9;
    font-size: var(--font-md);
    position: relative;
    z-index: 1;
}

/* --- 11. CONTACT PAGE --- */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.4fr;
    gap: var(--space-3xl);
    background: var(--bg-secondary);
    padding: var(--space-3xl);
    border-radius: var(--radius-2xl);
    border: 1px solid var(--border-medium);
    box-shadow: var(--shadow-xl);
    position: relative;
    overflow: hidden;
}

.contact-wrapper::before {
    content: '';
    position: absolute;
    bottom: 0;
    right: 0;
    width: 400px;
    height: 400px;
    background: var(--gradient-creative);
    opacity: 0.05;
    border-radius: 50% 0 var(--radius-2xl) 0;
}

.contact-info {
    position: relative;
    z-index: 1;
}

.contact-info h2 {
    font-size: var(--font-3xl);
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: var(--space-lg);
    letter-spacing: -1px;
}

.contact-info p {
    color: var(--text-secondary);
    line-height: 1.9;
    margin-bottom: var(--space-xl);
    font-size: var(--font-md);
}

.contact-form {
    position: relative;
    z-index: 1;
}

.contact-form label {
    display: block;
    font-weight: 700;
    color: var(--text-secondary);
    margin-bottom: var(--space-xs);
    font-size: var(--font-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 1rem 1.5rem;
    background: var(--bg-elevated);
    border: 2px solid var(--border-medium);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    font-size: var(--font-base);
    margin-bottom: var(--space-lg);
    transition: all var(--transition-base);
    font-family: inherit;
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--accent-cyan);
    background: var(--bg-primary);
    box-shadow: 0 0 0 4px rgba(6, 182, 212, 0.1), var(--shadow-glow-cyan);
}

.contact-form textarea {
    min-height: 180px;
    resize: vertical;
}

/* --- 12. ROADMAP PAGE --- */
.section-subtitle {
    text-align: center;
    font-size: var(--font-md);
    color: var(--text-muted);
    max-width: 700px;
    margin: 0 auto var(--space-3xl) auto;
    line-height: 1.8;
}

.generator-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-2xl);
    padding: var(--space-3xl);
    box-shadow: var(--shadow-xl);
    margin-bottom: var(--space-3xl);
    position: relative;
    overflow: hidden;
}

.generator-card::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 300px;
    height: 300px;
    background: var(--gradient-creative);
    opacity: 0.05;
    border-radius: 0 var(--radius-2xl) 0 100%;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-3xl);
    margin-bottom: var(--space-2xl);
    position: relative;
    z-index: 1;
}

.form-section h3 {
    font-size: var(--font-xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-xl);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.form-section h3 i {
    color: var(--accent-cyan);
    font-size: var(--font-lg);
}

.form-group {
    margin-bottom: var(--space-lg);
}

.form-group label {
    display: block;
    font-weight: 600;
    font-size: var(--font-sm);
    color: var(--text-secondary);
    margin-bottom: var(--space-xs);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-group select {
    width: 100%;
    padding: 0.875rem 1.25rem;
    background: var(--bg-elevated);
    border: 2px solid var(--border-medium);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    font-size: var(--font-base);
    font-family: inherit;
    cursor: pointer;
    transition: all var(--transition-base);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2306b6d4' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 3rem;
}

.form-group select:hover {
    border-color: var(--border-strong);
    background-color: var(--bg-accent-soft);
}

.form-group select:focus {
    outline: none;
    border-color: var(--accent-cyan);
    background-color: var(--bg-primary);
    box-shadow: 0 0 0 4px rgba(6, 182, 212, 0.1), var(--shadow-glow-cyan);
}

.form-group select option {
    background: var(--bg-elevated);
    color: var(--text-primary);
    padding: 0.5rem;
}

.form-footer {
    display: flex;
    gap: var(--space-xl);
    margin-bottom: var(--space-2xl);
    position: relative;
    z-index: 1;
}

.full-width {
    width: 100%;
    padding: 1.25rem 2.5rem;
    font-size: var(--font-md);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
}

.full-width i {
    font-size: var(--font-lg);
}

.roadmap-result {
    animation: slideDown 0.6s ease-out;
}

.result-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
    position: relative;
}

.result-header h2 {
    font-size: var(--font-3xl);
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
    letter-spacing: -1px;
}

.timeline-estimate {
    display: inline-block;
    padding: 0.75rem 2rem;
    background: var(--gradient-primary);
    color: white;
    border-radius: var(--radius-full);
    font-weight: 700;
    font-size: var(--font-md);
    box-shadow: var(--shadow-md), var(--shadow-glow-cyan);
}

.gap-analysis-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    margin-bottom: var(--space-2xl);
    box-shadow: var(--shadow-lg);
}

.gap-analysis-card h3 {
    font-size: var(--font-2xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-xl);
    padding-bottom: var(--space-sm);
    position: relative;
}

.gap-analysis-card h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 80px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
}

.gap-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
}

.gap-item {
    background: var(--bg-elevated);
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--accent-cyan);
    transition: all var(--transition-base);
}

.gap-item:hover {
    transform: translateX(8px);
    box-shadow: var(--shadow-md);
}

.gap-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-sm);
}

.gap-item-title {
    font-weight: 700;
    color: var(--text-primary);
    font-size: var(--font-base);
}

.gap-item-level {
    font-size: var(--font-xs);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.gap-item-level.beginner {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
}

.gap-item-level.intermediate {
    background: rgba(245, 158, 11, 0.1);
    color: #f59e0b;
}

.gap-item-level.expert {
    background: rgba(16, 185, 129, 0.1);
    color: #10b981;
}

.gap-item-description {
    font-size: var(--font-sm);
    color: var(--text-muted);
    line-height: 1.6;
}

.roadmap-timeline {
    margin-bottom: var(--space-3xl);
}

.phase-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    margin-bottom: var(--space-xl);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-base);
}

.phase-card:hover {
    border-color: var(--border-accent);
    box-shadow: var(--shadow-xl), var(--shadow-glow-cyan);
}

.phase-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 6px;
    height: 100%;
    background: var(--gradient-primary);
    transform: scaleY(0);
    transform-origin: top;
    transition: transform var(--transition-slow);
}

.phase-card:hover::before {
    transform: scaleY(1);
}

.phase-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--space-lg);
    flex-wrap: wrap;
    gap: var(--space-md);
}

.phase-title-group h3 {
    font-size: var(--font-2xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.phase-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    color: white;
    border-radius: 50%;
    font-weight: 800;
    font-size: var(--font-md);
    box-shadow: var(--shadow-md);
}

.phase-subtitle {
    font-size: var(--font-sm);
    color: var(--text-muted);
    font-weight: 500;
}

.phase-duration {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    background: rgba(6, 182, 212, 0.1);
    border: 1px solid var(--border-accent);
    border-radius: var(--radius-full);
    color: var(--accent-cyan);
    font-weight: 600;
    font-size: var(--font-sm);
}

.phase-duration i {
    font-size: var(--font-base);
}

.phase-content {
    margin-bottom: var(--space-lg);
}

.phase-description {
    font-size: var(--font-md);
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--space-lg);
}

.topics-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.topic-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    background: var(--bg-elevated);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-md);
    font-size: var(--font-sm);
    color: var(--text-secondary);
    transition: all var(--transition-base);
}

.topic-item:hover {
    background: var(--bg-accent-soft);
    border-color: var(--accent-cyan);
    transform: translateX(4px);
}

.topic-item i {
    color: var(--accent-cyan);
    font-size: var(--font-base);
}

.resources-section {
    background: var(--bg-elevated);
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-medium);
}

.resources-section h4 {
    font-size: var(--font-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.resources-section h4 i {
    color: var(--accent-purple);
}

.resource-links {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.resource-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-full);
    color: var(--accent-cyan);
    font-size: var(--font-sm);
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-base);
}

.resource-link:hover {
    background: rgba(6, 182, 212, 0.1);
    border-color: var(--accent-cyan);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.resource-link i {
    font-size: var(--font-xs);
}

.checklist-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

.checklist-card::before {
    content: '';
    position: absolute;
    bottom: 0;
    right: 0;
    width: 300px;
    height: 300px;
    background: var(--gradient-creative);
    opacity: 0.05;
    border-radius: 50% 0 var(--radius-xl) 0;
}

.checklist-card h3 {
    font-size: var(--font-2xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-xl);
    padding-bottom: var(--space-sm);
    position: relative;
    z-index: 1;
}

.checklist-card h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 80px;
    height: 4px;
    background: var(--gradient-success);
    border-radius: var(--radius-full);
}

.checklist {
    list-style: none;
    position: relative;
    z-index: 1;
}

.checklist li {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: var(--space-md);
    background: var(--bg-elevated);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-md);
    font-size: var(--font-base);
    color: var(--text-secondary);
    transition: all var(--transition-base);
    cursor: pointer;
}

.checklist li:hover {
    background: var(--bg-accent-soft);
    border-color: var(--accent-emerald);
    transform: translateX(8px);
}

.checklist li i {
    font-size: var(--font-lg);
    color: var(--text-muted);
    transition: all var(--transition-base);
    margin-top: 0.125rem;
}

.checklist li:hover i {
    color: var(--accent-emerald);
    transform: scale(1.2);
}

.checklist li.completed {
    background: rgba(16, 185, 129, 0.1);
    border-color: var(--accent-emerald);
}

.checklist li.completed i {
    color: var(--accent-emerald);
}

.checklist li.completed i::before {
    content: '\f058';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
}

/* --- 13. FOOTER --- */
footer {
    text-align: center;
    padding: var(--space-2xl);
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-medium);
    margin-top: auto;
    color: var(--text-muted);
    position: relative;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 200px;
    height: 3px;
    background: var(--gradient-creative);
    box-shadow: var(--shadow-glow-multi);
}

footer p {
    font-size: var(--font-base);
    font-weight: 500;
    position: relative;
    z-index: 1;
}

/* --- 14. RESPONSIVE --- */
@media (max-width: 1200px) {
    .about-container {
        grid-template-columns: 380px 1fr;
        gap: var(--space-2xl);
    }
}

@media (max-width: 1024px) {
    .about-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--space-xl);
    }
    
    .about-image img {
        margin: 0 auto;
    }
    
    .about-socials {
        justify-content: center;
    }
    
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
    
    .form-grid {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }
}

@media (max-width: 768px) {
    :root {
        --space-3xl: 4rem;
        --space-4xl: 5rem;
    }
    
    .hamburger {
        display: block;
        z-index: 1100;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 85%;
        max-width: 400px;
        height: 100vh;
        background: rgba(15, 28, 46, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: var(--space-xl);
        transition: right var(--transition-slow);
        z-index: 1000;
        box-shadow: -20px 0 60px rgba(0, 0, 0, 0.5);
        border-left: 1px solid var(--border-medium);
    }

    .nav-links.active {
        right: 0;
    }
    
    .nav-links a {
        font-size: var(--font-md);
    }

    .hero h1 {
        font-size: clamp(2rem, 10vw, 4rem);
    }

    .hero p {
        font-size: var(--font-base);
    }

    .hero-buttons {
        display: flex;
        flex-direction: column;
        width: 100%;
        max-width: 320px;
        margin: 0 auto;
        align-items: stretch;
        gap: var(--space-md);
    }

    .hero-buttons .btn {
        width: 100%;
        text-align: center;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .page-container {
        padding: var(--space-3xl) var(--space-sm);
    }
    
    .about-container {
        padding: var(--space-xl);
    }
    
    .contact-wrapper {
        padding: var(--space-xl);
    }
    
    .page-title {
        font-size: var(--font-3xl);
    }
    
    .generator-card {
        padding: var(--space-xl);
    }

    .form-footer {
        flex-direction: column;
        gap: var(--space-md);
    }

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

    .phase-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .topics-list {
        grid-template-columns: 1fr;
    }

    .resource-links {
        flex-direction: column;
    }

    .resource-link {
        width: 100%;
        justify-content: center;
    }

    .result-header h2 {
        font-size: var(--font-2xl);
    }

    .timeline-estimate {
        font-size: var(--font-sm);
        padding: 0.625rem 1.5rem;
    }
}

@media (max-width: 480px) {
    nav {
        padding: var(--space-sm);
    }
    
    .logo {
        font-size: var(--font-lg);
    }
    
    .generator-card {
        padding: var(--space-md);
    }

    .gap-analysis-card,
    .phase-card,
    .checklist-card {
        padding: var(--space-lg);
    }

    .section-subtitle {
        font-size: var(--font-base);
    }

    .phase-title-group h3 {
        font-size: var(--font-xl);
    }

    .phase-number {
        width: 32px;
        height: 32px;
        font-size: var(--font-sm);
    }
}

/* --- 15. ANIMATIONS --- */
@keyframes slideDown {
    from { transform: translateY(-30px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes shimmer {
    0% { background-position: -1200px 0; }
    100% { background-position: 1200px 0; }
}

.fade-in {
    animation: fadeIn 1s ease-out;
}

.loading {
    opacity: 0.6;
    pointer-events: none;
    position: relative;
}

.loading::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, transparent 0%, rgba(6, 182, 212, 0.2) 50%, transparent 100%);
    background-size: 1200px 100%;
    animation: shimmer 2.5s infinite;
}

.success-message {
    background: rgba(16, 185, 129, 0.1);
    border: 2px solid var(--accent-emerald);
    border-left: 6px solid var(--accent-emerald);
    color: var(--accent-emerald);
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    animation: slideDown 0.5s ease-out;
    box-shadow: var(--shadow-md), 0 0 30px rgba(16, 185, 129, 0.2);
}

::-webkit-scrollbar {
    width: 14px;
}

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

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--accent-cyan) 0%, var(--accent-purple) 100%);
    border-radius: 7px;
    border: 3px solid var(--bg-primary);
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, var(--accent-purple) 0%, var(--accent-pink) 100%);
}

:focus-visible {
    outline: 2px solid var(--accent-cyan);
    outline-offset: 4px;
}

@media print {
    nav, footer, .hero-buttons, .generator-card, .btn {
        display: none;
    }
    
    body {
        background: white;
        color: black;
    }
    
    body::before, body::after {
        display: none;
    }
    
    .page-container {
        max-width: 100%;
    }
    
    .roadmap-result {
        display: block !important;
    }

    .phase-card, .gap-analysis-card, .checklist-card {
        break-inside: avoid;
        page-break-inside: avoid;
    }
}