:root {
    --color-primary: #0F172A;
    --color-secondary-start: #1E3A8A;
    --color-secondary-end: #2563EB;
    --color-accent: #22D3EE;
    --color-bg: #F8FAFC;
    --color-card: #FFFFFF;
    --color-muted: #64748B;
    --color-border: #E2E8F0;
    --shadow-soft: 0 18px 45px rgba(15, 23, 42, 0.08);
    --radius-card: 18px;
    --radius-pill: 999px;
    --transition-fast: 180ms ease-out;
    --transition-med: 240ms ease-out;
    --nav-height: 72px;
    --max-width: 1120px;
}

[data-theme="dark"] {
    --color-primary: #F8FAFC;
    --color-secondary-start: #3B82F6;
    --color-secondary-end: #6366F1;
    --color-accent: #22D3EE;
    --color-bg: #0F172A;
    --color-card: #1E293B;
    --color-muted: #94A3B8;
    --color-border: #334155;
    --shadow-soft: 0 18px 45px rgba(0, 0, 0, 0.3);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: var(--color-bg);
    color: var(--color-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

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

a {
    text-decoration: none;
    color: inherit;
}

button {
    font-family: inherit;
}

.page {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.nav-shell {
    position: sticky;
    top: 0;
    z-index: 40;
    backdrop-filter: blur(12px);
    background: rgba(248, 250, 252, 0.92);
    border-bottom: 1px solid rgba(226, 232, 240, 0.6);
}

.nav {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
    height: var(--nav-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-left {
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-logo-mark {
    width: 32px;
    height: 32px;
    border-radius: 12px;
    background: radial-gradient(circle at 0% 0%, var(--color-accent), transparent 55%),
        linear-gradient(135deg, var(--color-secondary-start), var(--color-secondary-end));
    display: flex;
    align-items: center;
    justify-content: center;
    color: #E5F6FF;
    font-weight: 700;
    font-size: 16px;
}

.nav-title {
    font-weight: 700;
    letter-spacing: 0.04em;
    font-size: 14px;
    text-transform: uppercase;
    color: var(--color-muted);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 18px;
    font-size: 14px;
    font-weight: 500;
}

.nav-link {
    position: relative;
    padding: 4px 0;
    color: var(--color-muted);
    transition: color var(--transition-fast);
    cursor: pointer;
}

.nav-link::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -4px;
    width: 0;
    height: 2px;
    border-radius: 999px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-secondary-end));
    transition: width var(--transition-fast);
}

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

.nav-link.active {
    color: var(--color-primary);
}

.nav-link.active::after {
    width: 100%;
}

.nav-cta {
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-cta-btn {
    border-radius: var(--radius-pill);
    padding: 8px 14px;
    border: 1px solid rgba(148, 163, 184, 0.7);
    font-size: 13px;
    color: var(--color-primary);
    background: rgba(255, 255, 255, 0.9);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast), background var(--transition-fast);
}

.nav-cta-btn span {
    font-size: 16px;
    color: var(--color-accent);
}

.nav-cta-btn:hover {
    border-color: var(--color-secondary-end);
    box-shadow: 0 14px 35px rgba(30, 64, 175, 0.15);
    transform: translateY(-1px);
    background: #FFFFFF;
}

.nav-toggle {
    display: none;
    width: 34px;
    height: 34px;
    border-radius: 999px;
    border: 1px solid rgba(148, 163, 184, 0.7);
    background: rgba(255, 255, 255, 0.9);
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

.nav-toggle-line {
    width: 16px;
    height: 2px;
    border-radius: 999px;
    background: var(--color-primary);
    position: relative;
}

.nav-toggle-line::before,
.nav-toggle-line::after {
    content: "";
    position: absolute;
    left: 0;
    width: 16px;
    height: 2px;
    border-radius: 999px;
    background: var(--color-primary);
    transition: transform var(--transition-fast), opacity var(--transition-fast), top var(--transition-fast), bottom var(--transition-fast);
}

.nav-toggle-line::before {
    top: -5px;
}

.nav-toggle-line::after {
    bottom: -5px;
}

/* Theme Toggle Button */
.theme-toggle {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    border: 1px solid var(--color-border);
    background: var(--color-card);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 18px;
    position: relative;
    z-index: 50;
}

.theme-toggle:hover {
    border-color: var(--color-accent);
    background: var(--color-bg);
    transform: translateY(-1px);
}

/* Fixed visibility for theme icons */
.theme-icon-light,
.theme-icon-dark {
    display: inline-flex !important;
    align-items: center;
    justify-content: center;
}

[data-theme="dark"] .theme-icon-light {
    display: none !important;
}

html:not([data-theme="dark"]) .theme-icon-dark {
    display: none !important;
}

[data-theme="dark"] .nav-shell {
    background: rgba(15, 23, 42, 0.92);
    border-bottom: 1px solid rgba(51, 65, 85, 0.6);
}

[data-theme="dark"] .nav-cta-btn,
[data-theme="dark"] .nav-toggle,
[data-theme="dark"] .nav-link-chip,
[data-theme="dark"] .hero-meta,
[data-theme="dark"] .hero-badge,
[data-theme="dark"] .btn-ghost,
[data-theme="dark"] .link-pill {
    background: rgba(30, 41, 59, 0.8);
    border-color: rgba(71, 85, 105, 0.7);
    color: var(--color-primary);
}

[data-theme="dark"] .pill-tag {
    background: rgba(30, 41, 59, 0.6);
    border-color: rgba(71, 85, 105, 0.8);
    color: var(--color-muted);
}

[data-theme="dark"] .hero-card {
    background: linear-gradient(145deg, #1E293B, #0F172A);
    border-color: rgba(51, 65, 85, 0.8);
}

[data-theme="dark"] .hero-highlight-pill {
    background: rgba(248, 250, 252, 0.1);
    color: var(--color-primary);
}

[data-theme="dark"] .hero-highlight-stat {
    background: rgba(248, 250, 252, 0.05);
    border-color: rgba(51, 65, 85, 0.8);
}

[data-theme="dark"] .card:hover {
    background: #1E293B;
    border-color: var(--color-accent);
}

[data-theme="dark"] .nav-links-mobile {
    background: rgba(15, 23, 42, 0.98);
    border-top: 1px solid rgba(51, 65, 85, 0.8);
}

[data-theme="dark"] .resume-frame,
[data-theme="dark"] .resume-summary-group,
[data-theme="dark"] .project-main-card,
[data-theme="dark"] .project-compact-card,
[data-theme="dark"] .project-modal,
[data-theme="dark"] .research-card,
[data-theme="dark"] .research-timeline-item,
[data-theme="dark"] .skills-group-card,
[data-theme="dark"] .cert-card,
[data-theme="dark"] .contact-details,
[data-theme="dark"] .contact-form-card {
    background: var(--color-card);
    border-color: var(--color-border);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

[data-theme="dark"] .project-tab,
[data-theme="dark"] .project-modal-close,
[data-theme="dark"] .skill-icon-pill,
[data-theme="dark"] .skill-icon-level,
[data-theme="dark"] .skills-toggle {
    background: rgba(30, 41, 59, 0.6);
    border-color: var(--color-border);
    color: var(--color-muted);
}

[data-theme="dark"] .project-tab.active,
[data-theme="dark"] .skills-toggle:hover {
    background: var(--color-secondary-start);
    border-color: var(--color-secondary-end);
    color: white;
}

[data-theme="dark"] .project-visual,
[data-theme="dark"] .project-compact-visual,
[data-theme="dark"] .cert-thumb {
    background: radial-gradient(circle at 10% 0%, rgba(34, 211, 238, 0.15), rgba(15, 23, 42, 0.8));
    border-color: var(--color-border);
}

[data-theme="dark"] .research-badge {
    background: rgba(59, 130, 246, 0.2);
    border-color: rgba(59, 130, 246, 0.4);
    color: var(--color-accent);
}

[data-theme="dark"] .timeline-dot {
    background: var(--color-secondary-end);
    border-color: rgba(99, 102, 241, 0.3);
}

[data-theme="dark"] .skill-icon-pill:hover {
    background: rgba(30, 41, 59, 0.9);
    border-color: var(--color-accent);
}

[data-theme="dark"] .resume-frame-body {
    background: repeating-linear-gradient(-45deg, #1E293B, #1E293B 8px, #0F172A 8px, #0F172A 16px);
    border-color: var(--color-border);
}

[data-theme="dark"] .resume-dot:nth-child(1) {
    background: #EF4444;
}

[data-theme="dark"] .resume-dot:nth-child(2) {
    background: #F59E0B;
}

[data-theme="dark"] .resume-dot:nth-child(3) {
    background: #10B981;
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(4px);
}

.modal-content {
    background-color: var(--color-card);
    margin: 15% auto;
    padding: 24px;
    border: 1px solid var(--color-border);
    width: 90%;
    max-width: 500px;
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-soft);
    color: var(--color-primary);
}

.close-button {
    color: var(--color-muted);
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    line-height: 1;
}

.close-button:hover {
    color: var(--color-primary);
}

.modal-content h2 {
    margin-bottom: 12px;
    font-size: 20px;
}

.modal-content p {
    margin-bottom: 16px;
    font-size: 14px;
    color: var(--color-muted);
}

#tempRepoLink {
    width: 100%;
    padding: 10px 14px;
    margin-bottom: 16px;
    border-radius: 8px;
    border: 1px solid var(--color-border);
    background: var(--color-bg);
    color: var(--color-primary);
    font-family: inherit;
}

#openTempRepo {
    background-color: var(--color-secondary-end);
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: opacity var(--transition-fast);
}

#openTempRepo:hover {
    opacity: 0.9;
}

.modal-footnote {
    font-size: 11px !important;
    color: var(--color-muted);
    margin-top: 16px;
    margin-bottom: 0 !important;
}

[data-theme="dark"] .modal {
    background-color: rgba(0, 0, 0, 0.6);
}

.nav-toggle.open .nav-toggle-line {
    background: transparent;
}

.nav-toggle.open .nav-toggle-line::before {
    top: 0;
    transform: rotate(45deg);
}

.nav-toggle.open .nav-toggle-line::after {
    bottom: 0;
    transform: rotate(-45deg);
}

.nav-links-mobile {
    display: none;
    border-top: 1px solid rgba(226, 232, 240, 0.8);
    background: rgba(248, 250, 252, 0.98);
    backdrop-filter: blur(12px);
}

.nav-links-mobile-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 12px 20px 12px;
    display: flex;
    flex-wrap: wrap;
    gap: 10px 16px;
    font-size: 13px;
    font-weight: 500;
}

.nav-link-chip {
    padding: 6px 12px;
    border-radius: var(--radius-pill);
    border: 1px solid rgba(148, 163, 184, 0.65);
    color: var(--color-muted);
    background: rgba(255, 255, 255, 0.9);
    cursor: pointer;
    transition: border-color var(--transition-fast), color var(--transition-fast), background var(--transition-fast), transform var(--transition-fast);
}

.nav-link-chip:hover {
    border-color: var(--color-secondary-end);
    color: var(--color-primary);
    transform: translateY(-1px);
    background: #FFFFFF;
}

.nav-link-chip.active {
    border-color: var(--color-secondary-end);
    color: var(--color-primary);
    background: #FFFFFF;
}

.main {
    flex: 1;
}

.section-shell {
    padding: 48px 20px 40px;
}

.section-inner {
    max-width: var(--max-width);
    margin: 0 auto;
}

.section-header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 26px;
}

.section-kicker {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--color-accent);
    font-weight: 600;
    margin-bottom: 2px;
}

.section-title {
    font-size: 22px;
    font-weight: 700;
    letter-spacing: 0.02em;
    color: var(--color-primary);
}

.section-subtitle {
    font-size: 14px;
    color: var(--color-muted);
    max-width: 420px;
}

.section-anchor-offset {
    position: relative;
    top: calc(-1 * var(--nav-height) - 12px);
    visibility: hidden;
}

.hero {
    padding: 40px 20px 48px;
}

.hero-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: minmax(0, 3fr) minmax(0, 2.6fr);
    gap: 40px;
    align-items: center;
}

.hero-meta {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 6px 10px;
    border-radius: var(--radius-pill);
    border: 1px solid rgba(148, 163, 184, 0.65);
    background: rgba(255, 255, 255, 0.9);
    color: var(--color-muted);
    font-size: 12px;
    margin-bottom: 16px;
}

.hero-meta-dot {
    width: 7px;
    height: 7px;
    border-radius: 999px;
    background: radial-gradient(circle at 30% 20%, var(--color-accent), var(--color-secondary-end));
    box-shadow: 0 0 0 4px rgba(34, 211, 238, 0.14);
}

.hero-name {
    font-size: clamp(30px, 4vw, 38px);
    font-weight: 800;
    letter-spacing: -0.03em;
    margin-bottom: 8px;
}

.hero-tagline {
    font-size: 16px;
    color: var(--color-muted);
    max-width: 480px;
    margin-bottom: 18px;
}

.hero-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 22px;
}

.hero-badge {
    border-radius: var(--radius-pill);
    padding: 6px 12px;
    font-size: 12px;
    font-weight: 500;
    border: 1px solid rgba(148, 163, 184, 0.7);
    background: rgba(248, 250, 252, 0.9);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.hero-badge-pill {
    width: 8px;
    height: 8px;
    border-radius: 999px;
    background: linear-gradient(135deg, var(--color-secondary-start), var(--color-secondary-end));
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 22px;
}

.btn-primary {
    border-radius: var(--radius-pill);
    padding: 9px 18px;
    border: none;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    background: linear-gradient(120deg, var(--color-secondary-start), var(--color-secondary-end));
    color: #E5F0FF;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    box-shadow: 0 16px 35px rgba(30, 64, 175, 0.45);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), filter var(--transition-fast);
}

.btn-primary:hover {
    transform: translateY(-1px) translateZ(0);
    filter: brightness(1.03);
    box-shadow: 0 18px 40px rgba(30, 64, 175, 0.48);
}

.btn-ghost {
    border-radius: var(--radius-pill);
    padding: 9px 17px;
    border: 1px solid rgba(148, 163, 184, 0.8);
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    background: rgba(255, 255, 255, 0.9);
    color: var(--color-primary);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast), background var(--transition-fast);
}

.btn-ghost:hover {
    border-color: var(--color-secondary-end);
    box-shadow: 0 14px 32px rgba(148, 163, 184, 0.25);
    background: #FFFFFF;
    transform: translateY(-1px);
}

.btn-icon {
    font-size: 16px;
    line-height: 1;
}

.hero-footnote {
    font-size: 12px;
    color: var(--color-muted);
}

.hero-right {
    position: relative;
}

.hero-card {
    background: linear-gradient(145deg, #FFFFFF, #ECFEFF);
    border-radius: 26px;
    padding: 18px 18px 18px;
    box-shadow: var(--shadow-soft);
    display: grid;
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1.9fr);
    gap: 14px;
    border: 1px solid rgba(226, 232, 240, 0.9);
}

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

.hero-profile-ring {
    position: absolute;
    inset: 0;
    border-radius: 999px;
    border: 2px dashed rgba(148, 163, 184, 0.6);
    transform: scale(1.05);
}

.hero-profile {
    width: 100%;
    max-width: 190px;
    aspect-ratio: 1 / 1;
    border-radius: 999px;
    overflow: hidden;
    border: 4px solid #F8FAFC;
    box-shadow: 0 18px 35px rgba(15, 23, 42, 0.35);
}

.hero-profile img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-status-chip {
    position: absolute;
    bottom: 8px;
    right: -4px;
    border-radius: 999px;
    background: rgba(15, 23, 42, 0.96);
    color: #E2E8F0;
    padding: 6px 10px;
    font-size: 11px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    box-shadow: 0 14px 32px rgba(15, 23, 42, 0.75);
}

.hero-status-dot {
    width: 8px;
    height: 8px;
    border-radius: 999px;
    background: #22C55E;
    box-shadow: 0 0 0 4px rgba(34, 197, 94, 0.25);
}

.hero-highlight-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
    justify-content: center;
}

.hero-highlight-row {
    display: flex;
    align-items: center;
    gap: 16px;
}

.hero-highlight-label {
    font-size: 11px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--color-muted);
    font-weight: 600;
}

.hero-highlight-pill-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.hero-highlight-pill {
    border-radius: var(--radius-pill);
    padding: 4px 8px;
    font-size: 11px;
    background: rgba(15, 23, 42, 0.06);
    color: var(--color-primary);
}

.hero-highlight-stat-row {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
}

.hero-highlight-stat {
    flex: 1;
    min-width: 85px;
    border-radius: 14px;
    padding: 6px 8px;
    background: rgba(15, 23, 42, 0.03);
    border: 1px solid rgba(226, 232, 240, 0.9);
}

.hero-highlight-stat-number {
    font-size: 15px;
    font-weight: 700;
    color: var(--color-primary);
}

.hero-highlight-stat-label {
    font-size: 11px;
    color: var(--color-muted);
}

.hero-blur-orb {
    position: absolute;
    top: -14%;
    right: -10%;
    width: 180px;
    height: 180px;
    background: radial-gradient(circle at 30% 10%, rgba(34, 211, 238, 0.15), transparent 60%),
        radial-gradient(circle at 70% 90%, rgba(37, 99, 235, 0.15), transparent 60%);
    filter: blur(10px);
    opacity: 0.9;
    pointer-events: none;
    z-index: -1;
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
}

.cards-grid-two {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
}

.card {
    border-radius: var(--radius-card);
    background: var(--color-card);
    box-shadow: var(--shadow-soft);
    padding: 18px 18px 16px;
    border: 1px solid rgba(226, 232, 240, 0.9);
    display: flex;
    flex-direction: column;
    gap: 10px;
    transition: transform var(--transition-med), box-shadow var(--transition-med), border-color var(--transition-med), background var(--transition-med);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 60px rgba(15, 23, 42, 0.16);
    border-color: rgba(129, 140, 248, 0.95);
    background: #FFFFFF;
}

.card-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 10px;
}

.card-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-primary);
}

.card-kicker {
    font-size: 11px;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.12em;
    margin-bottom: 2px;
    font-weight: 600;
}

.card-meta {
    font-size: 12px;
    color: var(--color-muted);
}

.pill-tag-row {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 4px;
}

.pill-tag {
    font-size: 11px;
    padding: 3px 8px;
    border-radius: var(--radius-pill);
    border: 1px solid rgba(203, 213, 225, 0.95);
    color: var(--color-muted);
    background: #F9FAFB;
}

.pill-tag-strong {
    border-color: rgba(129, 140, 248, 0.95);
    background: rgba(239, 246, 255, 0.95);
    color: #1E3A8A;
}

.card-body {
    font-size: 13px;
    color: var(--color-muted);
}

.card-list {
    margin-top: 4px;
    display: grid;
    gap: 2px;
}

.card-list-item {
    font-size: 12px;
    color: var(--color-muted);
}

.card-list-item span {
    color: var(--color-primary);
    font-weight: 500;
}

.card-footer {
    margin-top: 8px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: flex-end;
}

.link-pill {
    font-size: 11px;
    padding: 5px 10px;
    border-radius: var(--radius-pill);
    border: 1px solid rgba(148, 163, 184, 0.85);
    background: rgba(255, 255, 255, 0.96);
    color: var(--color-primary);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    transition: border-color var(--transition-fast), background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast), color var(--transition-fast);
}

.link-pill:hover {
    border-color: var(--color-secondary-end);
    background: #FFFFFF;
    transform: translateY(-1px);
    box-shadow: 0 12px 30px rgba(148, 163, 184, 0.3);
    color: var(--color-primary);
}

.link-pill-primary {
    position: relative;
    overflow: hidden;
    padding-inline: 14px;
    border-color: transparent;
    background:
        radial-gradient(circle at 0% 0%, rgba(34, 211, 238, 0.45), transparent 55%),
        linear-gradient(120deg, var(--color-secondary-start), var(--color-secondary-end));
    color: #E5F0FF;
    box-shadow: 0 14px 36px rgba(30, 64, 175, 0.65);
    letter-spacing: 0.02em;
}

.link-pill-primary::before {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 0% 0%, rgba(248, 250, 252, 0.18), transparent 60%);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.link-pill-primary:hover {
    border-color: transparent;
    filter: brightness(1.05);
    box-shadow: 0 18px 44px rgba(30, 64, 175, 0.8);
    transform: translateY(-2px);
}

.link-pill-primary:hover::before {
    opacity: 1;
}

.link-icon {
    font-size: 14px;
    line-height: 1;
    transition: transform var(--transition-fast);
}

.link-pill-primary:hover .link-icon {
    transform: translateX(2px);
}

.view-repo-btn {
    min-width: 0;
    justify-content: center;
    gap: 8px;
}

.view-repo-btn:focus-visible {
    outline: 2px solid rgba(59, 130, 246, 0.9);
    outline-offset: 2px;
}

.view-repo-btn:active {
    transform: translateY(1px) scale(0.98);
    box-shadow: 0 10px 26px rgba(15, 23, 42, 0.55);
}

.view-repo-icon-left,
.view-repo-icon-right {
    font-size: 14px;
    line-height: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.view-repo-icon-left {
    transform-origin: center;
}

.view-repo-icon-right {
    transition: transform var(--transition-fast);
}

.view-repo-btn:hover .view-repo-icon-right {
    transform: translateX(2px);
}

.view-repo-btn-disabled {
    cursor: default;
    border-style: dashed;
    color: var(--color-muted);
    background: #F3F4F6;
    box-shadow: none;
}

.view-repo-btn-disabled:hover {
    transform: none;
    box-shadow: none;
}

.view-repo-add-dev {
    margin-left: 8px;
    font-size: 10px;
    border-radius: var(--radius-pill);
    border: 1px dashed rgba(148, 163, 184, 0.9);
    background: rgba(248, 250, 252, 0.96);
    padding: 3px 8px;
    cursor: pointer;
    color: var(--color-muted);
}

.view-repo-add-dev:hover {
    border-color: rgba(129, 140, 248, 0.9);
    color: var(--color-primary);
}

@media (max-width: 420px) {
    .view-repo-label {
        display: none;
    }
}

.resume-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.7fr) minmax(0, 1.5fr);
    gap: 20px;
    align-items: flex-start;
}

.resume-frame {
    border-radius: 20px;
    border: 1px solid rgba(203, 213, 225, 0.95);
    background: #FFFFFF;
    box-shadow: var(--shadow-soft);
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.resume-frame-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 11px;
    color: var(--color-muted);
    margin-bottom: 4px;
}

.resume-dots {
    display: flex;
    gap: 4px;
}

.resume-dot {
    width: 8px;
    height: 8px;
    border-radius: 999px;
    background: #E5E7EB;
}

.resume-dot:nth-child(1) {
    background: #F97373;
}

.resume-dot:nth-child(2) {
    background: #FACC15;
}

.resume-dot:nth-child(3) {
    background: #22C55E;
}

.resume-frame-body {
    border-radius: 14px;
    border: 1px dashed rgba(203, 213, 225, 0.9);
    background: repeating-linear-gradient(-45deg, #F9FAFB, #F9FAFB 8px, #F3F4F6 8px, #F3F4F6 16px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 28px 16px;
}

.resume-placeholder {
    text-align: center;
    color: var(--color-muted);
    font-size: 13px;
}

.resume-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: flex-end;
    margin-top: 4px;
}

.resume-summary {
    display: grid;
    gap: 14px;
}

.resume-summary-group {
    padding: 14px 14px 12px;
    border-radius: 16px;
    border: 1px solid rgba(226, 232, 240, 0.9);
    background: #FFFFFF;
    box-shadow: 0 10px 30px rgba(148, 163, 184, 0.12);
}

.resume-summary-title {
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--color-primary);
}

.resume-summary-list {
    font-size: 12px;
    color: var(--color-muted);
    display: grid;
    gap: 2px;
}

.resume-summary-list li {
    margin-left: 12px;
}

.project-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1.6fr);
    gap: 22px;
    align-items: flex-start;
}

.project-main-card {
    border-radius: 22px;
    background: #FFFFFF;
    box-shadow: var(--shadow-soft);
    padding: 16px 16px 14px;
    border: 1px solid rgba(226, 232, 240, 0.9);
    display: grid;
    grid-template-rows: auto auto 1fr auto;
    gap: 8px;
}

.project-header-row {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 10px;
}

.project-label {
    font-size: 11px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--color-muted);
    font-weight: 600;
}

.project-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--color-primary);
}

.project-description {
    font-size: 13px;
    color: var(--color-muted);
}

.project-meta-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 4px;
}

.project-features {
    font-size: 12px;
    display: grid;
    gap: 3px;
    margin-top: 6px;
    color: var(--color-muted);
}

.project-features span {
    color: var(--color-primary);
    font-weight: 500;
}

.project-role {
    font-size: 12px;
    margin-top: 6px;
    color: var(--color-muted);
}

.project-role span {
    color: var(--color-primary);
    font-weight: 500;
}

.project-visuals-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
    gap: 10px;
    margin-top: 8px;
}

.project-visual {
    border-radius: 14px;
    overflow: hidden;
    border: 1px solid rgba(203, 213, 225, 0.9);
    background: radial-gradient(circle at 10% 0%, rgba(34, 211, 238, 0.26), rgba(15, 23, 42, 0.95));
    min-height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px;
    color: #E5F0FF;
    font-size: 11px;
    text-align: center;
}

.project-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 2px;
}

.project-tab {
    font-size: 12px;
    padding: 5px 10px;
    border-radius: var(--radius-pill);
    border: 1px solid rgba(203, 213, 225, 0.9);
    background: #F9FAFB;
    color: var(--color-muted);
    cursor: pointer;
    transition: border-color var(--transition-fast), background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}

.project-tab.active {
    border-color: rgba(129, 140, 248, 0.9);
    background: rgba(239, 246, 255, 0.96);
    color: #1E3A8A;
    transform: translateY(-1px);
}

.project-list {
    display: grid;
    gap: 10px;
}

.project-compact-card {
    border-radius: 16px;
    background: #FFFFFF;
    border: 1px solid rgba(226, 232, 240, 0.9);
    box-shadow: 0 10px 30px rgba(148, 163, 184, 0.16);
    padding: 12px 12px 10px;
    display: grid;
    grid-template-columns: minmax(0, 1.7fr) minmax(0, 1.3fr);
    gap: 10px;
    align-items: flex-start;
    transition: transform var(--transition-med), box-shadow var(--transition-med), border-color var(--transition-med);
}

.project-compact-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 18px 50px rgba(15, 23, 42, 0.16);
    border-color: rgba(129, 140, 248, 0.95);
}

.project-compact-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 2px;
}

.project-compact-meta {
    font-size: 11px;
    color: var(--color-muted);
    margin-bottom: 5px;
}

.project-compact-list {
    font-size: 11px;
    color: var(--color-muted);
    display: grid;
    gap: 2px;
}

.project-compact-list span {
    color: var(--color-primary);
    font-weight: 500;
}

.project-compact-visual {
    border-radius: 12px;
    border: 1px solid rgba(203, 213, 225, 0.9);
    min-height: 80px;
    background: radial-gradient(circle at 10% 0%, rgba(34, 211, 238, 0.26), rgba(15, 23, 42, 0.97));
    display: flex;
    align-items: center;
    justify-content: center;
    color: #E5F0FF;
    font-size: 11px;
    text-align: center;
    padding: 8px;
}

.project-modal-backdrop {
    position: fixed;
    inset: 0;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 16px;
    background: rgba(15, 23, 42, 0.55);
    z-index: 60;
}

.project-modal-backdrop.open {
    display: flex;
}

.project-modal {
    width: 100%;
    max-width: 640px;
    max-height: min(90vh, 640px);
    overflow: auto;
    border-radius: 20px;
    background: #FFFFFF;
    border: 1px solid rgba(226, 232, 240, 0.9);
    box-shadow: var(--shadow-soft);
    padding: 16px 16px 14px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.project-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}

.project-modal-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-primary);
}

.project-modal-close {
    border: 1px solid rgba(203, 213, 225, 0.9);
    border-radius: var(--radius-pill);
    background: #F9FAFB;
    cursor: pointer;
    padding: 4px 10px;
    font-size: 13px;
    color: var(--color-muted);
}

.project-modal-body {
    font-size: 13px;
    color: var(--color-muted);
}

.project-modal-body h3 {
    font-size: 13px;
    font-weight: 600;
    color: var(--color-primary);
    margin: 8px 0 4px;
}

.project-modal-body p {
    margin: 4px 0;
}

.project-modal-body ul {
    margin: 4px 0 6px 1.1rem;
    padding: 0;
    display: grid;
    gap: 2px;
}

.project-modal-footer {
    display: flex;
    justify-content: flex-end;
    margin-top: 4px;
}

.research-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1.4fr);
    gap: 20px;
    align-items: flex-start;
}

.research-card {
    border-radius: 20px;
    background: #FFFFFF;
    border: 1px solid rgba(226, 232, 240, 0.9);
    box-shadow: var(--shadow-soft);
    padding: 16px 16px 14px;
    display: grid;
    gap: 8px;
}

.research-title {
    font-size: 15px;
    font-weight: 700;
    color: var(--color-primary);
}

.research-status {
    font-size: 11px;
    color: var(--color-muted);
    text-transform: uppercase;
    letter-spacing: 0.12em;
    font-weight: 600;
}

.research-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 9px;
    border-radius: var(--radius-pill);
    border: 1px solid rgba(129, 140, 248, 0.9);
    background: rgba(239, 246, 255, 0.98);
    font-size: 11px;
    color: #1E3A8A;
}

.research-meta {
    font-size: 12px;
    color: var(--color-muted);
}

.research-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: flex-end;
    margin-top: 6px;
}

.research-timeline {
    display: grid;
    gap: 10px;
}

.research-timeline-item {
    border-radius: 16px;
    background: #FFFFFF;
    border: 1px solid rgba(226, 232, 240, 0.9);
    padding: 12px 12px 10px;
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    gap: 10px;
}

.timeline-dot {
    width: 14px;
    height: 14px;
    border-radius: 999px;
    border: 3px solid rgba(129, 140, 248, 0.3);
    background: #1E3A8A;
    margin-top: 4px;
}

.timeline-content-title {
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 2px;
}

.timeline-content-sub {
    font-size: 11px;
    color: var(--color-muted);
    margin-bottom: 2px;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
}

.skills-group-card {
    border-radius: 20px;
    background: #FFFFFF;
    border: 1px solid rgba(226, 232, 240, 0.9);
    box-shadow: var(--shadow-soft);
    padding: 14px 14px 12px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.skills-group-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--color-primary);
}

.skills-group-header {
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.skills-group-meta {
    font-size: 11px;
    color: var(--color-muted);
}

.skills-group-body {
    display: grid;
    gap: 8px;
}

.skills-visible {
    display: grid;
    gap: 8px;
}

.skills-extra {
    display: grid;
    gap: 8px;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transform: translateY(-4px);
    transition: max-height var(--transition-med), opacity var(--transition-med), transform var(--transition-med);
}

.skills-group-card.skills-card-expanded .skills-extra {
    opacity: 1;
    transform: translateY(0);
}

.skills-proficiency-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.skills-proficiency-label {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--color-muted);
    font-weight: 600;
}

.skills-chips-row {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.skill-icon-pill {
    border-radius: 14px;
    padding: 7px 9px 6px;
    border: 1px solid rgba(226, 232, 240, 0.95);
    background: #F9FAFB;
    display: inline-flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    cursor: default;
    transition: transform var(--transition-med), box-shadow var(--transition-med), background var(--transition-med), border-color var(--transition-med);
}

.skill-icon-pill:hover {
    background: #FFFFFF;
    border-color: rgba(129, 140, 248, 0.9);
    transform: translateY(-2px);
    box-shadow: 0 12px 36px rgba(15, 23, 42, 0.14);
}

.skill-icon-label {
    font-size: 12px;
    color: var(--color-primary);
}

.skill-icon-level {
    font-size: 10px;
    color: var(--color-muted);
    padding: 3px 7px;
    border-radius: var(--radius-pill);
    border: 1px solid rgba(203, 213, 225, 0.95);
    background: #FFFFFF;
}

.skills-group-footer {
    margin-top: 4px;
    display: flex;
    justify-content: flex-end;
}

.skills-toggle {
    border-radius: var(--radius-pill);
    padding: 5px 11px;
    border: 1px solid rgba(148, 163, 184, 0.9);
    background: #FFFFFF;
    font-size: 11px;
    color: var(--color-muted);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    transition: border-color var(--transition-fast), background var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
}

.skills-toggle:hover {
    border-color: rgba(129, 140, 248, 0.9);
    background: rgba(239, 246, 255, 0.98);
    color: #1E3A8A;
    transform: translateY(-1px);
    box-shadow: 0 10px 26px rgba(148, 163, 184, 0.24);
}

.skills-toggle:focus-visible {
    outline: 2px solid rgba(59, 130, 246, 0.9);
    outline-offset: 2px;
}

.skills-toggle-icon {
    font-size: 12px;
    line-height: 1;
    transform: translateY(1px);
    transition: transform var(--transition-fast);
}

.skills-group-card.skills-card-expanded .skills-toggle-icon {
    transform: rotate(180deg);
}

.cert-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
}

.cert-card {
    border-radius: 18px;
    background: #FFFFFF;
    border: 1px solid rgba(226, 232, 240, 0.9);
    box-shadow: var(--shadow-soft);
    padding: 14px 14px 12px;
    display: grid;
    gap: 8px;
}

.cert-thumb {
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid rgba(203, 213, 225, 0.9);
    background: radial-gradient(circle at 10% 0%, rgba(34, 211, 238, 0.3), rgba(15, 23, 42, 0.96));
    min-height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #E5F0FF;
    font-size: 11px;
    text-align: center;
    padding: 8px;
}

.cert-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--color-primary);
}

.cert-meta {
    font-size: 11px;
    color: var(--color-muted);
}

.cert-skills {
    font-size: 11px;
    color: var(--color-muted);
}

.cert-skills span {
    color: var(--color-primary);
    font-weight: 500;
}

.contact-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1.6fr);
    gap: 20px;
    align-items: flex-start;
}

.contact-details {
    border-radius: 20px;
    background: #FFFFFF;
    border: 1px solid rgba(226, 232, 240, 0.9);
    box-shadow: var(--shadow-soft);
    padding: 16px 16px 14px;
    display: grid;
    gap: 10px;
}

.contact-row {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 13px;
    color: var(--color-muted);
}

.contact-label {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--color-muted);
    font-weight: 600;
    width: 80px;
    flex-shrink: 0;
}

.contact-value {
    color: var(--color-primary);
    font-size: 13px;
}

.contact-link {
    color: var(--color-secondary-end);
    text-decoration: none;
}

.contact-link:hover {
    text-decoration: underline;
}

.contact-form-card {
    border-radius: 20px;
    background: #FFFFFF;
    border: 1px solid rgba(226, 232, 240, 0.9);
    box-shadow: var(--shadow-soft);
    padding: 16px 16px 14px;
    display: grid;
    gap: 12px;
}

.contact-form-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-primary);
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
}

.form-field {
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-size: 12px;
}

.form-label {
    color: var(--color-muted);
    font-weight: 500;
}

.form-input,
.form-textarea {
    border-radius: 12px;
    border: 1px solid rgba(203, 213, 225, 0.95);
    padding: 8px 10px;
    font-size: 13px;
    font-family: inherit;
    outline: none;
    background: #F9FAFB;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast), transform var(--transition-fast);
}

.form-textarea {
    min-height: 110px;
    resize: vertical;
}

.form-input:focus,
.form-textarea:focus {
    border-color: rgba(129, 140, 248, 0.95);
    box-shadow: 0 0 0 1px rgba(129, 140, 248, 0.4), 0 14px 40px rgba(148, 163, 184, 0.3);
    background: #FFFFFF;
    transform: translateY(-1px);
}

.form-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-top: 6px;
    font-size: 11px;
    color: var(--color-muted);
    flex-wrap: wrap;
}

.footer {
    border-top: 1px solid rgba(226, 232, 240, 0.8);
    padding: 18px 20px 20px;
    font-size: 11px;
    color: var(--color-muted);
}

.footer-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    flex-wrap: wrap;
}

.badge-gradient {
    background: linear-gradient(120deg, var(--color-secondary-start), var(--color-secondary-end));
    color: #E5F0FF;
}

.badge-outline {
    border-color: rgba(129, 140, 248, 0.9);
    background: rgba(239, 246, 255, 0.96);
    color: #1E3A8A;
}

.fade-in {
    opacity: 0;
    transform: translateY(14px);
    transition: opacity 320ms ease-out, transform 320ms ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.project-images-row {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
    flex-wrap: wrap;
    justify-content: center;
}

.project-image {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--color-border);
}

@media (min-width: 768px) {
    .project-image {
        max-width: calc(50% - 5px);
    }
}

@media (max-width: 960px) {
    .hero-inner {
        grid-template-columns: minmax(0, 1fr);
        gap: 32px;
    }

    .hero-right {
        order: -1;
    }

    .hero-card {
        grid-template-columns: minmax(0, 1.2fr) minmax(0, 1.8fr);
    }

    .cards-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .cert-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .skills-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .project-layout {
        grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.1fr);
    }

    .research-grid {
        grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.1fr);
    }

    .contact-layout {
        grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.1fr);
    }

    .nav-links {
        display: none;
    }

    .nav-toggle {
        display: inline-flex;
    }
}

@media (max-width: 720px) {
    .section-shell {
        padding: 36px 16px 32px;
    }

    .hero {
        padding: 32px 16px 32px;
    }

    .hero-card {
        grid-template-columns: minmax(0, 1fr);
    }

    .resume-layout,
    .project-layout,
    .research-grid,
    .contact-layout {
        grid-template-columns: minmax(0, 1fr);
    }

    .project-visuals-grid {
        grid-template-columns: minmax(0, 1fr);
    }

    .project-compact-card {
        grid-template-columns: minmax(0, 1fr);
    }

    .skills-grid {
        grid-template-columns: minmax(0, 1fr);
    }

    .skills-icons-grid {
        grid-template-columns: minmax(0, 1fr);
    }

    .cards-grid,
    .cards-grid-two,
    .cert-grid {
        grid-template-columns: minmax(0, 1fr);
    }

    .form-grid {
        grid-template-columns: minmax(0, 1fr);
    }
}

@media (max-width: 520px) {
    .nav {
        padding: 0 14px;
    }

    .section-title {
        font-size: 20px;
    }

    .hero-name {
        font-size: 26px;
    }
}

.edu-hx-section {
    border-top: 1px solid var(--color-border);
    padding-top: 40px;
}

.edu-hx-grid {
    gap: 18px;
}

.edu-hx-entry {
    padding-top: 14px;
    padding-bottom: 12px;
}

.edu-hx-meta {
    font-size: 12px;
    color: var(--color-muted);
    text-align: right;
}

.edu-hx-institution {
    font-size: 12px;
    font-weight: 500;
    color: var(--color-primary);
    margin-bottom: 4px;
}

.edu-hx-list {
    margin: 6px 0 8px 1.1rem;
    padding: 0;
    font-size: 12px;
    color: var(--color-muted);
}

.edu-hx-list li {
    margin-bottom: 2px;
}

.edu-hx-summary {
    margin: 0;
    font-size: 12px;
    color: var(--color-primary);
}

@media (max-width: 720px) {
    .edu-hx-meta {
        text-align: left;
        margin-top: 4px;
    }
}