/* ============================================
   PORTFOLIO — Professional Theme
   ============================================ */

/* ---------- CSS Variables ---------- */
:root {
    --bg-primary:    #0a0f1c;
    --bg-secondary:  #111827;
    --bg-card:       #1a2234;
    --bg-card-hover: #1f2b42;
    --accent:        #3b82f6;
    --accent-light:  #60a5fa;
    --accent-glow:   rgba(59, 130, 246, .25);
    --text-primary:  #f1f5f9;
    --text-secondary:#94a3b8;
    --text-muted:    #64748b;
    --border-color:  rgba(255,255,255,.06);
    --gradient:      linear-gradient(135deg, #3b82f6, #8b5cf6);
    --gradient-hover:linear-gradient(135deg, #60a5fa, #a78bfa);
    --clip-text:     text;
    --font-body:     'Inter', sans-serif;
    --font-mono:     'JetBrains Mono', monospace;
    --radius:        12px;
    --radius-lg:     20px;
    --transition:    .3s cubic-bezier(.4,0,.2,1);
}

/* ---------- Reset & Base ---------- */
*,*::before,*::after { box-sizing:border-box; }

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-body);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
}

::selection {
    background: var(--accent);
    color: #fff;
}

a { color: var(--accent-light); text-decoration: none; transition: var(--transition); }
a:hover { color: #fff; }

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-secondary); }
::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 4px; }

/* ---------- Navbar ---------- */
.navbar {
    padding: .8rem 0;
    background: transparent !important;
    transition: var(--transition);
    z-index: 1050;
}
.navbar.scrolled {
    background: rgba(10,15,28,.92) !important;
    backdrop-filter: blur(16px);
    box-shadow: 0 2px 24px rgba(0,0,0,.35);
    padding: .55rem 0;
}
.brand-icon {
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 1.35rem;
    background: var(--gradient);
    background-clip: var(--clip-text);
    -webkit-background-clip: var(--clip-text);
    -webkit-text-fill-color: transparent;
    color: transparent;
}
.navbar .nav-link {
    color: var(--text-secondary) !important;
    font-weight: 500;
    font-size: .95rem;
    margin-left: 1.5rem;
    position: relative;
    padding: .35rem 0;
    transition: var(--transition);
}
.navbar .nav-link::after {
    content:'';
    position:absolute; bottom:0; left:0; right:0;
    height:2px; background:var(--gradient);
    transform:scaleX(0); transform-origin:right;
    transition: transform .3s ease;
}
.navbar .nav-link:hover,
.navbar .nav-link.active {
    color: #fff !important;
}
.navbar .nav-link:hover::after,
.navbar .nav-link.active::after {
    transform:scaleX(1); transform-origin:left;
}

/* ---------- Hero ---------- */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--bg-primary);
    overflow: hidden;
}
.hero-section::before {
    content:'';
    position:absolute; top:-50%; right:-30%;
    width:80vw; height:80vw;
    background: radial-gradient(circle, rgba(59,130,246,.08) 0%, transparent 70%);
    pointer-events:none;
}
.hero-greeting {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--accent-light);
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: .5rem;
}
.hero-name {
    font-size: clamp(2.4rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1rem;
}
.hero-title-wrapper {
    margin-bottom: 1.5rem;
}
.hero-title {
    font-size: 1.3rem;
    font-weight: 500;
    background: var(--gradient);
    background-clip: var(--clip-text);
    -webkit-background-clip: var(--clip-text);
    -webkit-text-fill-color: transparent;
    color: transparent;
}
.hero-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 520px;
    margin-bottom: 2rem;
}
.hero-description strong { color: var(--text-primary); }

.hero-buttons { display:flex; flex-wrap:wrap; gap:.75rem; }

/* Buttons */
.btn-primary-custom {
    background: var(--gradient);
    border: none;
    color: #fff;
    padding: .7rem 1.8rem;
    border-radius: 50px;
    font-weight: 600;
    transition: var(--transition);
    box-shadow: 0 4px 20px var(--accent-glow);
}
.btn-primary-custom:hover {
    background: var(--gradient-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px var(--accent-glow);
    color: #fff;
}
.btn-outline-custom {
    border: 2px solid rgba(255,255,255,.15);
    color: var(--text-primary);
    padding: .65rem 1.8rem;
    border-radius: 50px;
    font-weight: 600;
    transition: var(--transition);
    background: transparent;
}
.btn-outline-custom:hover {
    border-color: var(--accent);
    background: rgba(59,130,246,.08);
    color: #fff;
}

/* Code Window */
.code-window {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0,0,0,.4);
    text-align: left;
}
.code-window-header {
    display:flex; align-items:center; gap:6px;
    padding: .65rem 1rem;
    background: rgba(0,0,0,.3);
    border-bottom: 1px solid var(--border-color);
}
.dot { width:12px;height:12px;border-radius:50%; }
.dot.red   { background:#ff5f57; }
.dot.yellow{ background:#febc2e; }
.dot.green { background:#28c840; }
.code-window-title {
    margin-left: auto;
    font-size: .78rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
}
.code-window-body {
    padding: 1.2rem 1.5rem;
    font-family: var(--font-mono);
    font-size: .85rem;
    line-height: 1.8;
    color: var(--text-secondary);
}
.code-window-body .kw { color: #c084fc; }
.code-window-body .cl { color: #38bdf8; }
.code-window-body .st { color: #34d399; }

/* Scroll indicator */
.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}
.scroll-indicator a {
    color: var(--text-muted);
    font-size: 1.5rem;
}
@keyframes bounce {
    0%,100% { transform:translateX(-50%) translateY(0); }
    50%     { transform:translateX(-50%) translateY(10px); }
}

/* ---------- Sections ---------- */
.section-padding { padding: 100px 0; }
.bg-dark-alt      { background: var(--bg-secondary); }

.section-header { margin-bottom: 1rem; }
.section-tag {
    display: inline-block;
    font-size: .85rem;
    font-weight: 600;
    color: var(--accent-light);
    background: rgba(59,130,246,.1);
    border: 1px solid rgba(59,130,246,.2);
    padding: .35rem 1rem;
    border-radius: 50px;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: .75rem;
}
.section-title {
    font-size: clamp(1.8rem, 3vw, 2.6rem);
    font-weight: 800;
}
.section-divider {
    width: 60px; height: 4px;
    background: var(--gradient);
    border-radius: 2px;
    margin: .75rem auto 0;
}
.section-subtitle {
    color: var(--text-secondary);
    max-width: 560px;
    margin-left: auto;
    margin-right: auto;
}

/* ---------- About ---------- */
.about-avatar { margin-bottom: 2rem; }
.avatar-ring {
    width: 200px; height: 200px;
    border-radius: 50%;
    background: var(--gradient);
    display: flex; align-items:center; justify-content:center;
    margin: 0 auto;
    padding: 4px;
    box-shadow: 0 0 40px var(--accent-glow);
}
.avatar-inner {
    width: 100%; height: 100%;
    border-radius: 50%;
    background: var(--bg-secondary);
    display: flex; align-items:center; justify-content:center;
}
.avatar-inner i {
    font-size: 4rem;
    background: var(--gradient);
    background-clip: var(--clip-text);
    -webkit-background-clip: var(--clip-text);
    -webkit-text-fill-color: transparent;
    color: transparent;
}
.about-subtitle {
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: 1rem;
}
.about-text {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}
.about-text strong { color: var(--text-primary); }

.about-stats {
    display: flex; gap: 2.5rem;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}
.stat-number {
    font-size: 1.75rem;
    font-weight: 800;
    background: var(--gradient);
    background-clip: var(--clip-text);
    -webkit-background-clip: var(--clip-text);
    -webkit-text-fill-color: transparent;
    color: transparent;
}
.stat-label {
    font-size: .85rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* ---------- Skills ---------- */
.skill-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2rem;
    text-align: center;
    height: 100%;
    transition: var(--transition);
}
.skill-card:hover {
    transform: translateY(-8px);
    border-color: rgba(59,130,246,.3);
    box-shadow: 0 20px 50px rgba(0,0,0,.3);
}
.skill-card h4 {
    font-weight: 700;
    font-size: 1.2rem;
    margin-bottom: 1rem;
}
.skill-card-icon {
    width: 65px; height: 65px;
    border-radius: 16px;
    display: flex; align-items:center; justify-content:center;
    margin: 0 auto 1.2rem;
    font-size: 1.5rem;
    color: #fff;
}
.skill-card-icon.backend     { background: linear-gradient(135deg,#3b82f6,#1d4ed8); }
.skill-card-icon.frontend    { background: linear-gradient(135deg,#8b5cf6,#6d28d9); }
.skill-card-icon.database    { background: linear-gradient(135deg,#10b981,#059669); }
.skill-card-icon.devops      { background: linear-gradient(135deg,#f59e0b,#d97706); }
.skill-card-icon.reporting   { background: linear-gradient(135deg,#ef4444,#dc2626); }
.skill-card-icon.integrations{ background: linear-gradient(135deg,#06b6d4,#0891b2); }

.skill-tags { display:flex; flex-wrap:wrap; gap:.5rem; justify-content:center; }
.skill-tag {
    font-size: .8rem;
    padding: .3rem .75rem;
    background: rgba(255,255,255,.05);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    color: var(--text-secondary);
    font-weight: 500;
    transition: var(--transition);
}
.skill-card:hover .skill-tag {
    border-color: rgba(59,130,246,.25);
    color: var(--text-primary);
}

/* ---------- Projects ---------- */
.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    position: relative;
    transition: var(--transition);
}
.project-card:hover {
    border-color: rgba(59,130,246,.3);
    box-shadow: 0 20px 60px rgba(0,0,0,.35);
}
.project-badge {
    position: absolute;
    top: 1.5rem; left: 1.5rem;
    background: var(--gradient);
    color: #fff;
    font-size: .78rem;
    font-weight: 600;
    padding: .35rem 1rem;
    border-radius: 50px;
    z-index: 2;
}
.project-info {
    padding: 4.5rem 2.5rem 2.5rem;
}
.project-name {
    font-size: 1.6rem;
    font-weight: 800;
    margin-bottom: .5rem;
}
.project-tagline {
    font-size: 1.05rem;
    color: var(--accent-light);
    font-weight: 500;
    margin-bottom: 1rem;
}
.project-description {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}
.project-features h5 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: .75rem;
    color: var(--text-primary);
}
.project-features ul {
    list-style: none;
    padding: 0;
    margin: 0 0 1.5rem;
}
.project-features li {
    padding: .25rem 0;
    color: var(--text-secondary);
    font-size: .92rem;
}
.project-features li::before {
    content: '▸ ';
    color: var(--accent);
    font-weight: 700;
}
.project-tech { display:flex; flex-wrap:wrap; gap:.5rem; }
.tech-badge {
    font-size: .78rem;
    padding: .3rem .8rem;
    background: rgba(59,130,246,.1);
    border: 1px solid rgba(59,130,246,.2);
    border-radius: 50px;
    color: var(--accent-light);
    font-weight: 500;
}

/* PMS Visual */
.project-visual {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    background: rgba(0,0,0,.15);
}

/* PMS Reports Showcase */
.pms-reports-showcase {
    width: 100%;
}
.pms-reports-header h4 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--accent-light);
    margin-bottom: .5rem;
}
.pms-reports-desc {
    font-size: .85rem;
    color: var(--text-secondary);
    font-style: italic;
    margin-bottom: 1.25rem;
    line-height: 1.55;
}
.pms-reports-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: .85rem;
}
.pms-report-card {
    background: rgba(255,255,255,.03);
    border: 1px solid var(--border-color);
    border-left: 3px solid var(--accent);
    border-radius: var(--radius);
    padding: 1rem 1.1rem;
    transition: var(--transition);
}
.pms-report-card:hover {
    background: rgba(59,130,246,.06);
    border-color: rgba(59,130,246,.25);
    border-left-color: var(--accent-light);
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(0,0,0,.25);
}
.pms-report-card h5 {
    font-size: .88rem;
    font-weight: 700;
    color: var(--accent-light);
    margin-bottom: .55rem;
    display: flex;
    align-items: center;
    gap: .35rem;
}
.pms-report-icon {
    font-size: 1rem;
}
.pms-report-card ul {
    list-style: none;
    padding: 0;
    margin: 0;
}
.pms-report-card li {
    font-size: .78rem;
    color: var(--text-secondary);
    padding: .15rem 0;
    line-height: 1.45;
}
.pms-report-card li::before {
    content: '▸ ';
    color: var(--accent);
    font-weight: 700;
}

/* PMS Demo Video */
.pms-demo-video-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
}
.pms-demo-video-card:hover {
    border-color: rgba(59,130,246,.3);
    box-shadow: 0 20px 60px rgba(0,0,0,.35);
}
.pms-demo-video-header {
    display: flex;
    align-items: center;
    gap: .75rem;
    padding: 1.25rem 1.75rem;
    border-bottom: 1px solid var(--border-color);
    font-size: 1rem;
    font-weight: 700;
    color: var(--accent-light);
}
.pms-demo-video-badge {
    margin-left: auto;
    background: var(--gradient);
    color: #fff;
    font-size: .75rem;
    font-weight: 600;
    padding: .25rem .85rem;
    border-radius: 50px;
}
.pms-demo-video-wrapper {
    padding: 1.5rem 2.5rem;
    background: rgba(0,0,0,.2);
}
.pms-demo-video {
    width: 100%;
    border-radius: var(--radius);
    display: block;
    max-height: 540px;
    background: #000;
}

/* ---------- Contact ---------- */
/* ---------- Experience Timeline ---------- */
.timeline {
    position: relative;
    padding-left: 40px;
    max-width: 800px;
    margin: 0 auto;
}
.timeline::before {
    content: '';
    position: absolute;
    left: 12px; top: 0; bottom: 0;
    width: 2px;
    background: var(--gradient);
    border-radius: 2px;
}
.timeline-item {
    position: relative;
    margin-bottom: 2.5rem;
}
.timeline-marker {
    position: absolute;
    left: -40px; top: 6px;
    width: 24px; height: 24px;
    border-radius: 50%;
    background: var(--bg-card);
    border: 3px solid var(--accent);
    box-shadow: 0 0 12px var(--accent-glow);
    z-index: 1;
}
.timeline-content {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 1.5rem 2rem;
    transition: var(--transition);
}
.timeline-content:hover {
    border-color: rgba(59,130,246,.3);
    transform: translateX(6px);
}
.timeline-header h4 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: .25rem;
}
.timeline-company {
    display: block;
    font-size: .92rem;
    color: var(--accent-light);
    font-weight: 500;
    margin-bottom: .25rem;
}
.timeline-date {
    display: inline-block;
    font-size: .82rem;
    color: var(--text-muted);
    margin-bottom: .75rem;
}
.timeline-details {
    list-style: none;
    padding: 0;
    margin: 0;
}
.timeline-details li {
    padding: .2rem 0;
    color: var(--text-secondary);
    font-size: .9rem;
}
.timeline-details li::before {
    content: '▸ ';
    color: var(--accent);
    font-weight: 700;
}

/* ---------- Education ---------- */
.edu-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2rem;
    text-align: center;
    height: 100%;
    transition: var(--transition);
}
.edu-card:hover {
    transform: translateY(-8px);
    border-color: rgba(59,130,246,.3);
    box-shadow: 0 20px 50px rgba(0,0,0,.3);
}
.edu-icon {
    width: 60px; height: 60px;
    border-radius: 50%;
    background: var(--gradient);
    display: flex; align-items:center; justify-content:center;
    margin: 0 auto 1rem;
    font-size: 1.3rem;
    color: #fff;
}
.edu-card h5 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: .35rem;
}
.edu-institution {
    font-size: .9rem;
    color: var(--text-secondary);
    margin-bottom: .5rem;
}
.edu-year {
    font-size: .82rem;
    color: var(--accent-light);
    font-weight: 600;
}

.lang-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 1.5rem 2rem;
}
.lang-card h5 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 1rem;
}
.lang-items {
    display: flex;
    gap: 2rem;
}
.lang-item {
    display: flex;
    flex-direction: column;
}
.lang-name {
    font-weight: 600;
    font-size: .95rem;
}
.lang-level {
    font-size: .85rem;
    color: var(--text-muted);
}

/* ---------- Contact Cards ---------- */
.contact-info-cards { display:flex; flex-direction:column; gap:1rem; }
.contact-info-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 1.5rem;
    text-align: center;
    transition: var(--transition);
}
.contact-info-card:hover {
    border-color: rgba(59,130,246,.3);
    transform: translateY(-4px);
}
.contact-icon {
    width: 48px; height: 48px;
    border-radius: 12px;
    background: var(--gradient);
    display: flex; align-items:center; justify-content:center;
    margin: 0 auto .75rem;
    font-size: 1.2rem;
    color: #fff;
}
.contact-info-card h5 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: .3rem;
}
.contact-info-card p,
.contact-info-card a {
    color: var(--text-secondary);
    font-size: .9rem;
    margin: 0;
}

.contact-form {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
}
.contact-form .form-label {
    font-weight: 600;
    font-size: .9rem;
    color: var(--text-secondary);
}
.contact-form .form-control {
    background: rgba(255,255,255,.03);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-primary);
    padding: .75rem 1rem;
    transition: var(--transition);
}
.contact-form .form-control::placeholder { color: var(--text-muted); }
.contact-form .form-control:focus {
    background: rgba(255,255,255,.05);
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
    color: var(--text-primary);
}

/* ---------- Footer ---------- */
.site-footer {
    padding: 3rem 0;
    border-top: 1px solid var(--border-color);
    background: var(--bg-primary);
}
.footer-brand {
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 1.2rem;
    background: var(--gradient);
    background-clip: var(--clip-text);
    -webkit-background-clip: var(--clip-text);
    -webkit-text-fill-color: transparent;
    color: transparent;
}
.footer-text {
    font-size: .85rem;
    color: var(--text-muted);
}
.social-links { display:flex; gap:1rem; justify-content:center; }
@media(min-width:768px) { .social-links { justify-content:flex-end; } }
.social-links a {
    width: 42px; height: 42px;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    display: flex; align-items:center; justify-content:center;
    color: var(--text-secondary);
    transition: var(--transition);
}
.social-links a:hover {
    background: var(--gradient);
    border-color: transparent;
    color: #fff;
    transform: translateY(-3px);
}

/* ---------- Back to Top ---------- */
.back-to-top {
    position: fixed;
    bottom: 2rem; right: 2rem;
    width: 46px; height: 46px;
    border-radius: 50%;
    background: var(--gradient);
    color: #fff;
    display: flex; align-items:center; justify-content:center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
    box-shadow: 0 4px 20px var(--accent-glow);
}
.back-to-top:hover {
    color: #fff;
    transform: translateY(-3px);
}
.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

/* ---------- Animations ---------- */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity .6s ease, transform .6s ease;
}
.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ---------- Responsive ---------- */
@media (max-width: 991.98px) {
    .hero-section { text-align: center; }
    .hero-description { margin-left: auto; margin-right: auto; }
    .hero-buttons { justify-content: center; }
    .about-stats { justify-content: center; }
    .project-info { padding: 4rem 1.5rem 1.5rem; }
    .project-visual { padding: 1.5rem; }
}
@media (max-width: 575.98px) {
    .about-stats { flex-direction: column; gap: 1rem; text-align: center; }
    .pms-reports-grid { grid-template-columns: 1fr; gap: .6rem; }
    .contact-form { padding: 1.5rem; }
    .timeline { padding-left: 30px; }
    .timeline-content { padding: 1rem 1.2rem; }
    .lang-items { flex-direction: column; gap: 1rem; }
}