/* ===== CSS Variables ===== */
/* ===== CSS Variables ===== */
:root {
    --primary: #14b8a6;
    --primary-dark: #0f766e;
    --primary-light: #ccfbf1;

    --accent: #2dd4bf;
    --accent-2: #8b5cf6;

    --bg-dark: #0b1220;
    --bg-card: #172033;
    --bg-alt: #111827;

    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;

    --border: #263449;

    --gradient: linear-gradient(135deg, #14b8a6, #06b6d4);
    --gradient-2: linear-gradient(135deg, #8b5cf6, #14b8a6);

    --shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    --transition: all 0.3s ease;
}

/* ===== Reset & Base ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 2rem; }

/* ===== Scroll Progress Bar ===== */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: var(--gradient);
    z-index: 2000;
    width: 0%;
    transition: width 0.05s linear;
}

/* ===== Navbar ===== */
.navbar {
    position: fixed;
    top: 3px;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 1rem 0;
    transition: var(--transition);
}
.navbar.scrolled {
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(14px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.4);
    padding: 0.7rem 0;
}
.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo { font-size: 1.8rem; font-weight: 800; color: var(--text-primary); }
.logo span { color: var(--primary); }
.nav-links { display: flex; gap: 1.5rem; align-items: center; }
.nav-links a {
    color: var(--text-secondary);
    font-weight: 500;
    position: relative;
    padding: 0.5rem 0;
    transition: var(--transition);
    font-size: 0.95rem;
}
.nav-links a:hover,
.nav-links a.active { color: var(--primary); }
.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient);
    transition: var(--transition);
}
.nav-links a:hover::after,
.nav-links a.active::after { width: 100%; }

/* Resume Button in Navbar */
.nav-resume-btn {
    background: var(--gradient) !important;
    color: #fff !important;
    padding: 8px 20px !important;
    border-radius: 50px !important;
    font-weight: 600 !important;
    font-size: 0.85rem !important;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition);
    box-shadow: 0 3px 12px rgba(37, 99, 235, 0.3);
}
.nav-resume-btn::after { display: none !important; }
.nav-resume-btn:hover {
    transform: translateY(-2px) !important;
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.5) !important;
}

.nav-right-mobile { display: none; align-items: center; gap: 12px; }
.mobile-resume {
    width: 38px;
    height: 38px;
    padding: 0 !important;
    justify-content: center;
    font-size: 0.9rem !important;
}

.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; }
.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    border-radius: 3px;
    transition: var(--transition);
}
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 6px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -6px); }

/* ===== Hero Section ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    padding: 7rem 2rem 3rem;
    gap: 3rem;
    position: relative;
}
.hero-particles {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    pointer-events: none;
    overflow: hidden;
}
.particle {
    position: absolute;
    border-radius: 50%;
    background: var(--primary);
    opacity: 0.08;
    animation: float 6s ease-in-out infinite;
}
@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(180deg); }
}
.hero-content { flex: 1; position: relative; z-index: 1; }
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(37, 99, 235, 0.15);
    color: var(--primary);
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 1.2rem;
    border: 1px solid rgba(37, 99, 235, 0.3);
}
.hero-greeting { color: var(--accent); font-size: 1.15rem; font-weight: 500; margin-bottom: 0.3rem; }
.hero-name {
    font-size: 4rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 0.5rem;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero-title { font-size: 1.5rem; color: var(--text-secondary); margin-bottom: 1.5rem; min-height: 2.5rem; }
.cursor { animation: blink 1s infinite; color: var(--primary); }
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }
.hero-description { color: var(--text-muted); font-size: 1.05rem; max-width: 520px; margin-bottom: 2rem; }
.hero-buttons { display: flex; gap: 1rem; margin-bottom: 2rem; flex-wrap: wrap; }
.hero-socials { display: flex; gap: 1rem; }
.hero-socials a {
    width: 44px; height: 44px;
    border: 2px solid var(--border);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    color: var(--text-secondary);
    font-size: 1.1rem;
    transition: var(--transition);
}
.hero-socials a:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-3px);
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
}

/* Code Card */
.hero-visual { flex: 0 0 420px; position: relative; z-index: 1; }
.code-card {
    background: var(--bg-card);
    border-radius: 16px;
    border: 1px solid var(--border);
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}
.code-header {
    display: flex; align-items: center; gap: 8px;
    padding: 12px 16px;
    background: rgba(0, 0, 0, 0.3);
    border-bottom: 1px solid var(--border);
}
.dot { width: 12px; height: 12px; border-radius: 50%; }
.dot.red { background: #ef4444; }
.dot.yellow { background: #eab308; }
.dot.green { background: #22c55e; }
.code-filename { color: var(--text-muted); font-size: 0.8rem; margin-left: 8px; font-family: monospace; }
.code-body { padding: 20px; font-family: 'Courier New', monospace; font-size: 0.85rem; line-height: 1.9; }
.code-line { color: var(--text-secondary); }
.kw { color: #c084fc; }
.fn { color: #60a5fa; }
.str { color: #34d399; }
.cm { color: var(--text-muted); font-style: italic; }
.mini-chart {
    display: flex; align-items: flex-end; gap: 8px;
    padding: 16px 20px 20px; height: 100px;
}
.mini-chart .bar {
    flex: 1;
    height: var(--h);
    border-radius: 4px 4px 0 0;
    opacity: 0.85;
    transition: opacity 0.2s, transform 0.2s;
}
.mini-chart .bar:nth-child(odd) { background: var(--primary); }
.mini-chart .bar:nth-child(even) { background: var(--accent); }
.mini-chart .bar:hover { opacity: 1; transform: scaleY(1.05); }

/* ===== Buttons ===== */
.btn {
    display: inline-flex; align-items: center; gap: 0.5rem;
    padding: 0.85rem 2rem; border-radius: 50px; font-weight: 600;
    font-size: 0.95rem; cursor: pointer; transition: var(--transition);
    border: none; font-family: inherit;
}
.btn-primary {
    background: var(--gradient); color: white;
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.4);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 25px rgba(37, 99, 235, 0.5); }
.btn-outline { border: 2px solid var(--primary); color: var(--primary); background: transparent; }
.btn-outline:hover { background: var(--primary); color: white; transform: translateY(-2px); }
.btn-full { width: 100%; justify-content: center; }

/* ===== Section Styles ===== */
.section { padding: 6rem 0; }
.section-alt { background: var(--bg-alt); }
.section-title {
    text-align: center; font-size: 2.5rem; margin-bottom: 0.5rem;
    position: relative; padding-bottom: 1rem;
}
.section-title::after {
    content: ''; position: absolute; bottom: 0; left: 50%;
    transform: translateX(-50%); width: 60px; height: 4px;
    background: var(--gradient); border-radius: 2px;
}
.section-subtitle {
    text-align: center; color: var(--text-muted);
    font-size: 1.05rem; margin-bottom: 3rem;
}

/* ===== About Section ===== */
.about-content { display: flex; gap: 3rem; align-items: flex-start; }
.about-cards-col { flex: 0 0 280px; display: flex; flex-direction: column; gap: 1rem; }
.about-card {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: 14px; padding: 1.5rem; transition: var(--transition);
}
.about-card:hover { border-color: var(--primary); transform: translateX(5px); }
.about-card-icon {
    width: 45px; height: 45px; border-radius: 12px;
    background: rgba(37, 99, 235, 0.15); color: var(--primary);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.2rem; margin-bottom: 0.8rem;
}
.about-card h4 { font-size: 1rem; margin-bottom: 0.3rem; }
.about-card p { color: var(--text-muted); font-size: 0.85rem; }
.about-text { flex: 1; }
.about-text p { color: var(--text-secondary); margin-bottom: 1.2rem; font-size: 1.02rem; }
.about-stats { display: flex; gap: 2rem; margin: 2rem 0; flex-wrap: wrap; }
.stat { text-align: center; }
.stat h3 {
    font-size: 2.2rem; display: inline;
    background: var(--gradient); -webkit-background-clip: text;
    -webkit-text-fill-color: transparent; background-clip: text;
}
.stat-plus { font-size: 1.5rem; color: var(--primary); font-weight: 700; }
.stat p { color: var(--text-muted); font-size: 0.85rem; margin-top: 0.2rem; }

/* ===== Skills Section ===== */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 1.5rem;
}
.skill-card {
    background: var(--bg-card);
    padding: 1.8rem;
    border-radius: 14px;
    border: 1px solid var(--border);
    transition: var(--transition);
    display: flex;
    gap: 1.2rem;
    align-items: flex-start;
}
.skill-card:hover { transform: translateY(-4px); border-color: var(--primary); box-shadow: var(--shadow); }
.skill-icon {
    font-size: 1.5rem;
    width: 55px; height: 55px;
    border-radius: 14px;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
}
.skill-icon.sql { background: rgba(234, 179, 8, 0.15); color: #eab308; }
.skill-icon.python { background: rgba(37, 99, 235, 0.15); color: #60a5fa; }
.skill-icon.pandas { background: rgba(5, 150, 105, 0.15); color: #34d399; }
.skill-icon.powerbi { background: rgba(236, 72, 153, 0.15); color: #ec4899; }
.skill-icon.excel { background: rgba(34, 197, 94, 0.15); color: #22c55e; }
.skill-icon.stats { background: rgba(139, 92, 246, 0.15); color: #a78bfa; }
.skill-info { flex: 1; }
.skill-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 0.3rem; }
.skill-header h3 { font-size: 1.1rem; }
.skill-percent { color: var(--primary); font-weight: 700; font-size: 1rem; font-family: monospace; }
.skill-info p { color: var(--text-muted); font-size: 0.82rem; margin-bottom: 0.8rem; }
.skill-bar { height: 8px; background: rgba(255,255,255,0.05); border-radius: 4px; overflow: hidden; }
.skill-progress {
    height: 100%; background: var(--gradient); border-radius: 4px;
    width: 0; transition: width 1.5s ease;
}

/* ===== Projects Section ===== */
.project-filters { display: flex; justify-content: center; gap: 0.8rem; margin-bottom: 2rem; flex-wrap: wrap; }
.filter-btn {
    padding: 0.5rem 1.5rem; border: 2px solid var(--border);
    background: transparent; color: var(--text-secondary);
    border-radius: 50px; cursor: pointer; font-family: inherit;
    font-weight: 500; transition: var(--transition); font-size: 0.9rem;
}
.filter-btn.active, .filter-btn:hover {
    border-color: var(--primary); color: var(--primary);
    background: rgba(37, 99, 235, 0.1);
}
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 1.5rem;
}
.project-card {
    background: var(--bg-card); border-radius: 14px;
    overflow: hidden; border: 1px solid var(--border); transition: var(--transition);
}
.project-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.project-card.hidden { display: none; }
.project-image {
    position: relative; height: 200px; display: flex;
    align-items: center; justify-content: center; font-size: 4rem;
    overflow: hidden;
}
.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}
.project-image.p1 { background: linear-gradient(135deg, #1e3a5f, #2563eb); color: rgba(255,255,255,0.25); }
.project-image.p2 { background: linear-gradient(135deg, #3b1f5e, #8b5cf6); color: rgba(255,255,255,0.25); }
.project-image.p3 { background: linear-gradient(135deg, #0f3d3e, #06b6d4); color: rgba(255,255,255,0.25); }
.project-image.p4 { background: linear-gradient(135deg, #1a3c1a, #22c55e); color: rgba(255,255,255,0.25); }
.project-image.p5 { background: linear-gradient(135deg, #3d2b0f, #eab308); color: rgba(255,255,255,0.25); }
.project-image.p6 { background: linear-gradient(135deg, #3b1034, #ec4899); color: rgba(255,255,255,0.25); }
.project-overlay {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(37, 99, 235, 0.9); display: flex;
    align-items: center; justify-content: center; gap: 1rem;
    opacity: 0; transition: var(--transition);
}
.project-card:hover .project-overlay { opacity: 1; }
.project-link {
    width: 50px; height: 50px; background: white; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    color: var(--primary); font-size: 1.1rem; transition: var(--transition);
    transform: translateY(20px);
}
.project-card:hover .project-link { transform: translateY(0); }
.project-link:hover { background: var(--bg-dark); color: white; }
.project-info { padding: 1.5rem; }
.project-info h3 { margin-bottom: 0.5rem; font-size: 1.1rem; }
.project-info p { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 1rem; line-height: 1.6; }
.project-tags { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.project-tags span {
    padding: 0.25rem 0.8rem; background: rgba(37, 99, 235, 0.12);
    color: var(--primary); border-radius: 20px; font-size: 0.78rem; font-weight: 600;
}

/* ===== Contact Section ===== */
.contact-content { display: flex; gap: 3rem; }
.contact-info { flex: 1; }
.contact-info h3 { font-size: 1.6rem; margin-bottom: 1rem; }
.contact-info > p { color: var(--text-secondary); margin-bottom: 2rem; font-size: 1rem; }
.contact-details { display: flex; flex-direction: column; gap: 1.2rem; }
.contact-item { display: flex; align-items: center; gap: 1rem; }
.contact-item > i {
    width: 48px; height: 48px; background: rgba(37, 99, 235, 0.12);
    border-radius: 12px; display: flex; align-items: center;
    justify-content: center; color: var(--primary); font-size: 1.1rem;
    flex-shrink: 0;
}
.contact-item div { display: flex; flex-direction: column; }
.contact-item strong { font-size: 0.85rem; color: var(--text-primary); }
.contact-item span { color: var(--text-muted); font-size: 0.9rem; }
.contact-form { flex: 1; }
.form-row { display: flex; gap: 1rem; }
.form-group { margin-bottom: 1rem; flex: 1; }
.form-group input, .form-group textarea {
    width: 100%; padding: 1rem 1.2rem; background: var(--bg-card);
    border: 1px solid var(--border); border-radius: 12px;
    color: var(--text-primary); font-family: inherit;
    font-size: 0.95rem; transition: var(--transition); outline: none;
}
.form-group input:focus, .form-group textarea:focus {
    border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}
.form-group textarea { resize: vertical; }

/* ===== Footer ===== */
.footer { padding: 10px 0; border-top: 1px solid var(--border); }
.footer-content {
    display: flex; justify-content: space-between;
    align-items: center; flex-wrap: wrap; gap: 1rem;
}
.footer-content p { color: var(--text-muted); font-size: 0.9rem; }
.footer-socials { display: flex; gap: 1rem; }
.footer-socials a { color: var(--text-muted); font-size: 1.2rem; transition: var(--transition); }
.footer-socials a:hover { color: var(--primary); transform: translateY(-2px); }

/* ===== Scroll to Top ===== */
.scroll-top {
    position: fixed; bottom: 2rem; right: 2rem;
    width: 50px; height: 50px; background: var(--gradient);
    border: none; border-radius: 50%; color: white;
    font-size: 1.2rem; cursor: pointer; opacity: 0;
    visibility: hidden; transition: var(--transition);
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.4); z-index: 999;
}
.scroll-top.visible { opacity: 1; visibility: visible; }
.scroll-top:hover { transform: translateY(-3px); }

/* ===== Animations ===== */
.fade-in {
    opacity: 0; transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .nav-links {
        position: fixed; top: 0; right: -100%; width: 75%; height: 100vh;
        background: var(--bg-card); flex-direction: column;
        align-items: center; justify-content: center; gap: 2rem;
        transition: var(--transition); z-index: 999;
    }
    .nav-links.active { right: 0; }
    .nav-links .nav-resume-btn { display: inline-flex; }
    .nav-right-mobile { display: flex; }
    .hero { flex-direction: column; text-align: center; padding-top: 7rem; }
    .hero-name { font-size: 2.8rem; }
    .hero-buttons, .hero-socials { justify-content: center; }
    .hero-description { margin: 0 auto 2rem; }
    .hero-visual { flex: none; width: 100%; }
    .code-card { max-width: 400px; margin: 0 auto; }
    .about-content { flex-direction: column; }
    .about-cards-col { flex: none; flex-direction: row; flex-wrap: wrap; gap: 1rem; }
    .about-card { flex: 1; min-width: 140px; }
    .about-stats { justify-content: center; }
    .contact-content { flex-direction: column; }
    .form-row { flex-direction: column; }
    .footer-content { flex-direction: column; text-align: center; }
    .section-title { font-size: 2rem; }
    .skills-grid { grid-template-columns: 1fr; }
    .projects-grid { grid-template-columns: 1fr; }
}

.logo img {
    width: 100px;
    height: 60px;
    object-fit: contain;
    display: block;
}
/* Analytics Hero Visual */
.analytics-card {
    width: 100%;
    max-width: 500px;
    padding: 28px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(10px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.25);
}

.analytics-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 25px;
}

.analytics-label {
    font-size: 11px;
    letter-spacing: 2px;
    opacity: 0.6;
}

.analytics-header h3 {
    margin: 6px 0 0;
    font-size: 22px;
}

.analytics-icon {
    font-size: 24px;
}

.analytics-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin-bottom: 25px;
}

.analytics-stat {
    padding: 15px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.04);
}

.analytics-stat span {
    display: block;
    font-size: 12px;
    opacity: 0.6;
    margin-bottom: 7px;
}

.analytics-stat strong {
    display: block;
    font-size: 20px;
    margin-bottom: 5px;
}

.analytics-stat small {
    font-size: 11px;
}

.chart-section {
    padding: 18px;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.025);
}

.chart-title {
    display: flex;
    justify-content: space-between;
    font-size: 13px;
    margin-bottom: 18px;
    opacity: 0.8;
}

.chart {
    height: 130px;
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 10px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.chart-bar {
    width: 100%;
    border-radius: 5px 5px 0 0;
    background: var(--primary);
    opacity: 0.8;
}

.chart-months {
    display: flex;
    justify-content: space-between;
    margin-top: 8px;
    font-size: 9px;
    opacity: 0.45;
}

.analytics-footer {
    display: flex;
    gap: 8px;
    margin-top: 18px;
    flex-wrap: wrap;
}

.analytics-footer span {
    padding: 6px 10px;
    border-radius: 20px;
    font-size: 10px;
    background: rgba(255, 255, 255, 0.05);
    opacity: 0.7;
}