/* ===== kunev.dev Redesign — Dark Theme + AI Education ===== */

/* ---------- Google Fonts (loaded in _Layout) ---------- */
/* Syne (display), Plus Jakarta Sans (body), JetBrains Mono (code) */

/* ---------- Design Tokens ---------- */
:root {
  --kd-bg: #141821;
  --kd-bg-raised: #1c2130;
  --kd-bg-card: #232839;
  --kd-surface: #2a3042;
  --kd-accent: #2DD4BF;
  --kd-accent-hover: #14B8A6;
  --kd-accent-glow: rgba(45, 212, 191, 0.15);
  --kd-text: #F8FAFC;
  --kd-text-secondary: #94A3B8;
  --kd-text-muted: #64748B;
  --kd-border: rgba(255, 255, 255, 0.06);
  --kd-font-display: 'Syne', sans-serif;
  --kd-font-body: 'Plus Jakarta Sans', sans-serif;
  --kd-font-mono: 'JetBrains Mono', monospace;
  --kd-radius: 1rem;
  --kd-radius-sm: 0.5rem;
  --kd-transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------- Base ---------- */
html { scroll-behavior: smooth; }

body {
  background: var(--kd-bg);
  color: var(--kd-text);
  font-family: var(--kd-font-body);
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--kd-font-display);
  font-weight: 700;
}

a { color: var(--kd-accent); transition: color var(--kd-transition); }
a:hover { color: var(--kd-accent-hover); }

::selection {
  background: var(--kd-accent);
  color: var(--kd-bg);
}

/* ---------- Dot grid background ---------- */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image: radial-gradient(rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 24px 24px;
}

/* ---------- Navigation ---------- */
#mainNav {
  background: rgba(20, 24, 33, 0.85) !important;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--kd-border);
  padding-top: 1rem;
  padding-bottom: 1rem;
  transition: background var(--kd-transition);
}

#mainNav .navbar-brand {
  font-family: var(--kd-font-display);
  font-weight: 800;
  font-size: 1.3rem;
  color: var(--kd-text) !important;
}
#mainNav .navbar-brand span {
  color: var(--kd-accent) !important;
  background: none !important;
  -webkit-text-fill-color: var(--kd-accent) !important;
}

#mainNav .nav-link {
  color: var(--kd-text-secondary) !important;
  font-family: var(--kd-font-body);
  font-weight: 600;
  font-size: 0.875rem;
  padding: 0.5rem 1rem !important;
  transition: color var(--kd-transition);
}
#mainNav .nav-link:hover,
#mainNav .nav-link.active {
  color: var(--kd-accent) !important;
}

#mainNav .navbar-toggler {
  border-color: var(--kd-border);
  color: var(--kd-text);
}
#mainNav .navbar-toggler-icon {
  filter: invert(1);
}

.lang-switcher {
  border-color: var(--kd-accent) !important;
  color: var(--kd-accent) !important;
  font-size: 0.75rem !important;
  padding: 0.2rem 0.6rem !important;
  font-weight: 700;
  border-radius: 20px;
  transition: all var(--kd-transition);
}
.lang-switcher:hover {
  background: var(--kd-accent) !important;
  color: var(--kd-bg) !important;
}

/* ---------- Hero Section ---------- */
.hero-section {
  min-height: 85vh;
  display: flex;
  align-items: center;
  position: relative;
  padding: 6rem 0 4rem;
}

.hero-label {
  display: inline-block;
  font-family: var(--kd-font-mono);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--kd-accent);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 0.4rem 1rem;
  border: 1px solid rgba(45, 212, 191, 0.3);
  border-radius: 2rem;
  margin-bottom: 1.5rem;
}

.hero-headline {
  font-family: var(--kd-font-display);
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  color: var(--kd-text);
  margin-bottom: 1.5rem;
}

.hero-headline .accent {
  color: var(--kd-accent);
}

.hero-subheadline {
  font-size: 1.15rem;
  line-height: 1.7;
  color: var(--kd-text-secondary);
  max-width: 540px;
  margin-bottom: 2rem;
}

.hero-credibility {
  font-size: 0.875rem;
  color: var(--kd-text-muted);
  font-style: italic;
}

/* ---------- Buttons ---------- */
.btn-accent {
  background: var(--kd-accent);
  color: var(--kd-bg);
  border: none;
  font-family: var(--kd-font-body);
  font-weight: 700;
  padding: 0.85rem 2rem;
  border-radius: var(--kd-radius-sm);
  font-size: 0.95rem;
  transition: all var(--kd-transition);
}
.btn-accent:hover {
  background: var(--kd-accent-hover);
  color: var(--kd-bg);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(45, 212, 191, 0.25);
}

.btn-outline-light-custom {
  background: transparent;
  color: var(--kd-text);
  border: 1px solid var(--kd-border);
  font-family: var(--kd-font-body);
  font-weight: 600;
  padding: 0.85rem 2rem;
  border-radius: var(--kd-radius-sm);
  font-size: 0.95rem;
  transition: all var(--kd-transition);
}
.btn-outline-light-custom:hover {
  border-color: var(--kd-accent);
  color: var(--kd-accent);
  background: var(--kd-accent-glow);
}

/* ---------- About Section (inline on home) ---------- */
.about-section {
  padding: 5rem 0;
  border-top: 1px solid var(--kd-border);
}

.about-section .section-label {
  font-family: var(--kd-font-mono);
  font-size: 0.75rem;
  color: var(--kd-accent);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.about-section h2 {
  font-size: 2rem;
  margin-bottom: 1.5rem;
}

.about-text {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--kd-text-secondary);
  max-width: 680px;
}

.about-text + .about-text {
  margin-top: 1rem;
}

/* ---------- Section Shared Styles ---------- */
.section-dark {
  background: var(--kd-bg);
  padding: 5rem 0;
}
.section-raised {
  background: var(--kd-bg-raised);
  padding: 5rem 0;
}

.section-label {
  font-family: var(--kd-font-mono);
  font-size: 0.75rem;
  color: var(--kd-accent);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

.section-heading {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 800;
  margin-bottom: 1rem;
}

.section-subtitle {
  color: var(--kd-text-secondary);
  font-size: 1.05rem;
  max-width: 600px;
}

/* ---------- Project Cards (Case Study Style) ---------- */
.project-card-new {
  background: var(--kd-bg-card);
  border: 1px solid var(--kd-border);
  border-radius: var(--kd-radius);
  padding: 2rem;
  transition: all var(--kd-transition);
  position: relative;
  overflow: hidden;
  height: 100%;
  display: flex;
  flex-direction: column;
}
.project-card-new:hover {
  border-color: rgba(45, 212, 191, 0.2);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.project-card-new.featured {
  border-color: rgba(45, 212, 191, 0.15);
  background: linear-gradient(135deg, var(--kd-bg-card) 0%, rgba(45, 212, 191, 0.03) 100%);
}
.project-card-new.featured::before {
  content: 'FEATURED';
  position: absolute;
  top: 1rem;
  right: 1rem;
  font-family: var(--kd-font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  color: var(--kd-accent);
  background: rgba(45, 212, 191, 0.1);
  padding: 0.2rem 0.6rem;
  border-radius: 0.25rem;
}

.project-card-new .project-icon {
  width: 3rem;
  height: 3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--kd-radius-sm);
  background: rgba(45, 212, 191, 0.1);
  color: var(--kd-accent);
  font-size: 1.25rem;
  margin-bottom: 1.25rem;
}

.project-card-new h3 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

.project-card-new .project-desc {
  color: var(--kd-text-secondary);
  font-size: 0.9rem;
  line-height: 1.65;
  flex-grow: 1;
}

.project-card-new .project-narrative {
  margin: 1rem 0;
}

.project-card-new .narrative-label {
  font-family: var(--kd-font-mono);
  font-size: 0.7rem;
  color: var(--kd-accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.25rem;
}

.project-card-new .narrative-text {
  color: var(--kd-text-secondary);
  font-size: 0.85rem;
  line-height: 1.6;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 1rem 0;
}

.project-tech span {
  font-family: var(--kd-font-mono);
  font-size: 0.7rem;
  color: var(--kd-text-muted);
  background: rgba(255, 255, 255, 0.04);
  padding: 0.2rem 0.6rem;
  border-radius: 0.25rem;
  border: 1px solid var(--kd-border);
}

.project-links {
  display: flex;
  gap: 0.75rem;
  margin-top: auto;
  padding-top: 1rem;
}

.project-links a {
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

/* ---------- Featured Project Card ---------- */
.featured-project-card {
  background: #0f1117;
  border: 1px solid var(--kd-border);
  border-left: 4px solid var(--kd-accent);
  border-radius: var(--kd-radius);
  padding: 2.5rem;
  position: relative;
  margin-bottom: 2rem;
}

.featured-badge {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  font-family: var(--kd-font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: #0f1117;
  background: var(--kd-accent);
  padding: 0.3rem 0.75rem;
  border-radius: 0.25rem;
}

.featured-status {
  font-family: var(--kd-font-mono);
  font-size: 0.7rem;
  color: #10B981;
  margin-bottom: 0.75rem;
}
.featured-status i { font-size: 0.45rem; vertical-align: middle; margin-right: 0.3rem; }

.featured-title {
  font-size: 1.75rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
}

.featured-tagline {
  color: var(--kd-text-secondary);
  font-size: 1rem;
  margin-bottom: 1.5rem;
}

.featured-narrative {
  margin: 1.25rem 0;
}
.featured-narrative-row {
  padding: 0.75rem 0;
}
.featured-narrative-divider {
  border-top: 1px solid var(--kd-border);
}

.featured-meta {
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--kd-border);
  border-radius: var(--kd-radius-sm);
  padding: 1.5rem;
}

.featured-stats {
  display: flex;
  gap: 2rem;
}

.featured-stat-number {
  font-family: var(--kd-font-display);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--kd-accent);
  line-height: 1.2;
}

.featured-stat-label {
  font-size: 0.8rem;
  color: var(--kd-text-muted);
  margin-top: 0.2rem;
}

/* ---------- Project Section Headings ---------- */
.projects-section {
  margin-top: 5rem;
}

.projects-section-heading {
  border-left: 3px solid var(--kd-accent);
  padding-left: 1rem;
  margin-bottom: 2rem;
}

.projects-section-heading h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.projects-section-heading p {
  color: var(--kd-text-muted);
  font-size: 0.9rem;
  margin: 0;
}

/* ---------- Live Badge ---------- */
.live-badge {
  font-family: var(--kd-font-mono);
  font-size: 0.6rem;
  font-weight: 600;
  color: #10B981;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.2);
  padding: 0.15rem 0.5rem;
  border-radius: 2rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* ---------- Featured card responsive ---------- */
@media (max-width: 991.98px) {
  .featured-project-card { padding: 1.5rem; }
  .featured-badge { position: static; display: inline-block; margin-bottom: 1rem; }
  .featured-stats { gap: 1.5rem; }
  .featured-meta { margin-top: 1.5rem; }
}

/* ---------- Consulting / Services ---------- */
.service-item {
  display: flex;
  gap: 1rem;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--kd-border);
}
.service-item:last-child { border-bottom: none; }

.service-item .service-arrow {
  color: var(--kd-accent);
  font-size: 1.25rem;
  flex-shrink: 0;
  margin-top: 0.15rem;
}

.service-item h4 {
  font-size: 1.05rem;
  margin-bottom: 0.35rem;
}

.service-item p {
  color: var(--kd-text-secondary);
  font-size: 0.9rem;
  margin: 0;
}

/* ---------- Research Section ---------- */
.research-card {
  background: var(--kd-bg-card);
  border: 1px solid var(--kd-border);
  border-radius: var(--kd-radius);
  padding: 2.5rem;
}

.research-card .research-status {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--kd-font-mono);
  font-size: 0.75rem;
  color: #10B981;
  background: rgba(16, 185, 129, 0.1);
  padding: 0.3rem 0.8rem;
  border-radius: 2rem;
  margin-bottom: 1.5rem;
}

.research-card .research-status::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #10B981;
  animation: pulse-dot 2s ease infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.research-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.research-card .research-summary {
  color: var(--kd-text-secondary);
  font-size: 1rem;
  line-height: 1.8;
}

/* ---------- Writing / Blog ---------- */
.writing-item {
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--kd-border);
  transition: all var(--kd-transition);
}
.writing-item:last-child { border-bottom: none; }

.writing-item:hover {
  padding-left: 0.5rem;
}

.writing-item .writing-tag {
  font-family: var(--kd-font-mono);
  font-size: 0.65rem;
  color: var(--kd-accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.writing-item h4 {
  font-size: 1.1rem;
  margin: 0.25rem 0 0.5rem;
}

.writing-item p {
  color: var(--kd-text-secondary);
  font-size: 0.9rem;
  margin: 0;
}

.writing-coming-soon {
  font-family: var(--kd-font-mono);
  font-size: 0.75rem;
  color: var(--kd-text-muted);
  background: rgba(255, 255, 255, 0.03);
  border: 1px dashed var(--kd-border);
  border-radius: var(--kd-radius-sm);
  padding: 0.4rem 0.8rem;
  display: inline-block;
}

/* ---------- Contact ---------- */
.contact-section {
  min-height: calc(100vh - 4rem);
  display: flex;
  align-items: center;
}

.contact-section .form-control,
.contact-section .form-select {
  background: var(--kd-bg-card);
  border: 1px solid var(--kd-border);
  color: var(--kd-text);
  font-family: var(--kd-font-body);
  border-radius: var(--kd-radius-sm);
}
.contact-section .form-control:focus,
.contact-section .form-select:focus {
  border-color: var(--kd-accent);
  box-shadow: 0 0 0 0.2rem var(--kd-accent-glow);
  background: var(--kd-bg-card);
  color: var(--kd-text);
}
.contact-section .form-floating > label {
  color: var(--kd-text-muted);
}

.contact-info-card {
  background: var(--kd-bg-card);
  border: 1px solid var(--kd-border);
  border-radius: var(--kd-radius);
  padding: 1.5rem;
  text-align: center;
  transition: all var(--kd-transition);
}
.contact-info-card:hover {
  border-color: rgba(45, 212, 191, 0.2);
}
.contact-info-card i {
  color: var(--kd-accent);
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
  display: block;
}
.contact-info-card h6 {
  color: var(--kd-text);
  font-size: 0.9rem;
  margin-bottom: 0.35rem;
}
.contact-info-card p {
  color: var(--kd-text-secondary);
  font-size: 0.85rem;
  margin: 0;
}

/* ---------- Footer ---------- */
footer {
  background: var(--kd-bg-raised) !important;
  border-top: 1px solid var(--kd-border);
  color: var(--kd-text-secondary);
  padding: 2.5rem 0 !important;
}
footer .fw-bold { color: var(--kd-text); }
footer a { color: var(--kd-accent); }
footer .small, footer .m-0 { color: var(--kd-text-muted); }

/* ---------- Social Links ---------- */
.social-links {
  display: flex;
  gap: 1rem;
}
.social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  border: 1px solid var(--kd-border);
  color: var(--kd-text-secondary);
  font-size: 1rem;
  transition: all var(--kd-transition);
  text-decoration: none;
}
.social-links a:hover {
  border-color: var(--kd-accent);
  color: var(--kd-accent);
  background: var(--kd-accent-glow);
}

/* ---------- Alerts override ---------- */
.alert-success {
  background: rgba(16, 185, 129, 0.1);
  border-color: rgba(16, 185, 129, 0.2);
  color: #10B981;
}
.alert-danger {
  background: rgba(239, 68, 68, 0.1);
  border-color: rgba(239, 68, 68, 0.2);
  color: #EF4444;
}

/* ---------- Bootstrap overrides for dark theme ---------- */
.bg-light { background: var(--kd-bg-raised) !important; }
.bg-white { background: var(--kd-bg-raised) !important; }
.text-muted { color: var(--kd-text-secondary) !important; }
.text-dark { color: var(--kd-text) !important; }
.border-0 { border-color: var(--kd-border) !important; }
.shadow { box-shadow: 0 4px 24px rgba(0, 0, 0, 0.2) !important; }
.shadow-sm { box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15) !important; }

.card {
  background: var(--kd-bg-card);
  border-color: var(--kd-border);
}

/* ---------- Responsive ---------- */
@media (max-width: 767.98px) {
  .hero-section {
    min-height: auto;
    padding: 4rem 0 3rem;
    text-align: center;
  }
  .hero-subheadline {
    margin-left: auto;
    margin-right: auto;
  }
  .hero-buttons {
    justify-content: center;
  }
  .about-text { margin-left: auto; margin-right: auto; }
  .section-subtitle { margin-left: auto; margin-right: auto; }
}

/* ---------- Smooth page transitions ---------- */
main {
  animation: fadeIn 0.4s ease;
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--kd-bg); }
::-webkit-scrollbar-thumb {
  background: var(--kd-surface);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover { background: var(--kd-text-muted); }