/* ============================================================
   HELPDEV.NET — Monochrome portfolio theme
   ============================================================ */

:root{
  --bg: #0a0a0a;
  --bg-alt: #121212;
  --fg: #f5f5f5;
  --fg-dim: #a3a3a3;
  --fg-faint: #6b6b6b;
  --line: #2a2a2a;
  --card: #141414;
  --inverse-bg: #f5f5f5;
  --inverse-fg: #0a0a0a;
  --radius: 2px;
  --font-display: 'Space Grotesk', 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, monospace;
}

html[data-theme="light"]{
  --bg: #fafafa;
  --bg-alt: #f0f0f0;
  --fg: #0a0a0a;
  --fg-dim: #4a4a4a;
  --fg-faint: #8a8a8a;
  --line: #dcdcdc;
  --card: #ffffff;
  --inverse-bg: #0a0a0a;
  --inverse-fg: #f5f5f5;
}

*{ box-sizing: border-box; }

html{ scroll-behavior: smooth; }

body{
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-display);
  font-weight: 400;
  transition: background .35s ease, color .35s ease;
  overflow-x: hidden;
}

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

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

.container{ max-width: 1140px; }

/* ---------- Header / Nav ---------- */
.site-header{
  position: sticky;
  top: 0;
  z-index: 1000;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.site-nav{ padding: .9rem 0; }

.logo-mark{
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: .04em;
  color: var(--fg) !important;
}
.logo-mark.small{ font-size: 1rem; }
.logo-dot{ color: var(--fg-dim); }

.navbar-nav .nav-link{
  color: var(--fg-dim);
  font-size: .92rem;
  font-weight: 500;
  letter-spacing: .02em;
  padding: .5rem .9rem !important;
  position: relative;
  transition: color .2s ease;
}
.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active{
  color: var(--fg);
}
.navbar-nav .nav-link.active::after{
  content: "";
  position: absolute;
  left: .9rem; right: .9rem; bottom: .1rem;
  height: 1px;
  background: var(--fg);
}

.navbar-toggler{
  border: 1px solid var(--line);
  padding: .4rem .6rem;
  background: transparent;
}
.toggler-bar{
  display: block;
  width: 20px;
  height: 2px;
  background: var(--fg);
  margin: 4px 0;
}

/* Theme toggle switch */
.theme-toggle{
  background: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 3px;
  width: 52px;
  height: 28px;
  cursor: pointer;
  margin-top: .5rem;
}
.theme-toggle-track{
  display: block;
  position: relative;
  width: 100%;
  height: 100%;
}
.theme-toggle-thumb{
  position: absolute;
  top: 50%;
  left: 2px;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--fg);
  transition: left .25s ease;
}
html[data-theme="light"] .theme-toggle-thumb{ left: calc(100% - 20px); }

@media (min-width: 992px){
  .navbar-nav .nav-item:last-child{ margin-left: .5rem; }
  .theme-toggle{ margin-top: 0; }
}

/* ---------- Sections ---------- */
.section{ padding: 7rem 0; border-bottom: 1px solid var(--line); }
.section-alt{ background: var(--bg-alt); }
#home.hero-section{ min-height: 90vh; border-bottom: 1px solid var(--line); padding: 8rem 0 5rem; }

.section-kicker{
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--fg-faint);
  margin-bottom: 1rem;
}

.section-title{
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2rem, 4.5vw, 3.4rem);
  line-height: 1.05;
  letter-spacing: -.01em;
}

.lead-text{
  color: var(--fg-dim);
  font-size: 1.05rem;
  line-height: 1.75;
}

.hl{ color: var(--fg); font-weight: 600; border-bottom: 1px solid var(--fg-faint); }

/* ---------- Hero ---------- */
.eyebrow{
  font-family: var(--font-mono);
  font-size: .85rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--fg-faint);
  margin-bottom: 1.25rem;
}
.hero-title{
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(3rem, 9vw, 6.5rem);
  line-height: .98;
  letter-spacing: -.02em;
  margin-bottom: 1.75rem;
}
.hero-sub{
  max-width: 640px;
  font-size: 1.15rem;
  color: var(--fg-dim);
  line-height: 1.7;
  margin-bottom: 2.75rem;
}

.hero-stats{
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem 2rem;
  max-width: 560px;
  margin-bottom: 3rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--line);
}
@media (min-width: 576px){
  .hero-stats{ grid-template-columns: repeat(4, 1fr); }
}
.stat{ display: flex; flex-direction: column; }
.stat-num{
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 1.8rem;
  color: var(--fg);
}
.stat-label{
  font-size: .75rem;
  color: var(--fg-faint);
  text-transform: uppercase;
  letter-spacing: .05em;
  margin-top: .25rem;
}

.hero-cta{ display: flex; gap: 1rem; flex-wrap: wrap; }

/* ---------- Buttons ----------
   Selectors are doubled up (.btn.btn-mono) so they out-specificity
   Bootstrap's own .btn:hover rule, which otherwise resets
   background-color on hover and makes the button invisible. */
.btn.btn-mono{
  background-color: var(--fg);
  color: var(--bg);
  border: 1px solid var(--fg);
  border-radius: var(--radius);
  font-weight: 600;
  letter-spacing: .02em;
  padding: .75rem 1.75rem;
  transition: opacity .2s ease, transform .15s ease;
}
.btn.btn-mono:hover{ background-color: var(--fg); color: var(--bg); opacity: .82; }
.btn.btn-mono:focus{ background-color: var(--fg); color: var(--bg); }
.btn.btn-mono:active{ background-color: var(--fg); color: var(--bg); transform: scale(.98); }

.btn.btn-mono-outline{
  background-color: transparent;
  color: var(--fg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-weight: 600;
  letter-spacing: .02em;
  padding: .75rem 1.75rem;
  transition: border-color .2s ease, color .2s ease;
}
.btn.btn-mono-outline:hover,
.btn.btn-mono-outline:focus{ background-color: transparent; border-color: var(--fg); color: var(--fg); }

/* ---------- About ---------- */
.about-card, .info-card{
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 2rem;
}
.about-card-title{
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: 1.25rem;
  text-transform: uppercase;
  letter-spacing: .04em;
}
.check-list{ list-style: none; padding: 0; margin: 0; }
.check-list li{
  padding: .6rem 0;
  border-bottom: 1px solid var(--line);
  color: var(--fg-dim);
  font-size: .95rem;
}
.check-list li:last-child{ border-bottom: none; }
.check-list li::before{
  content: "\2014  ";
  color: var(--fg-faint);
  font-family: var(--font-mono);
}

/* ---------- Timeline (Experience) ---------- */
.timeline{ position: relative; }
.timeline-item{
  position: relative;
  padding-left: 2.5rem;
  padding-bottom: 3.5rem;
  border-left: 1px solid var(--line);
  margin-left: .35rem;
}
.timeline-item:last-child{ padding-bottom: 0; }
.timeline-marker{
  position: absolute;
  left: -6px;
  top: .35rem;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--fg);
  border: 2px solid var(--bg);
}
.timeline-head{
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: .75rem 1.25rem;
  margin-bottom: .35rem;
}
.timeline-head h3{
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.4rem;
  margin: 0;
}
.timeline-date{
  font-family: var(--font-mono);
  font-size: .82rem;
  color: var(--fg-faint);
}
.timeline-org{
  color: var(--fg-faint);
  font-size: .92rem;
  margin-bottom: 1.25rem;
}
.bullet-list{ list-style: none; padding: 0; margin: 0; }
.bullet-list li{
  position: relative;
  padding-left: 1.4rem;
  margin-bottom: 1rem;
  color: var(--fg-dim);
  line-height: 1.65;
}
.bullet-list li::before{
  content: "";
  position: absolute;
  left: 0; top: .55em;
  width: 6px; height: 6px;
  background: var(--fg-faint);
}
.bullet-list li strong{ color: var(--fg); }
.metric{
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--fg);
  background: var(--bg-alt);
  padding: .05rem .4rem;
  border: 1px solid var(--line);
}

/* ---------- Skills ---------- */
.skill-card{
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.75rem;
  height: 100%;
}
.skill-card h3{
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: .05em;
  margin-bottom: 1.1rem;
}
.tag-wrap{ display: flex; flex-wrap: wrap; gap: .5rem; }
.tag{
  font-family: var(--font-mono);
  font-size: .78rem;
  padding: .35rem .7rem;
  border: 1px solid var(--line);
  color: var(--fg-dim);
  border-radius: 999px;
}

/* ---------- Accomplishments ---------- */
.accolade-card{
  display: flex;
  align-items: baseline;
  gap: 1.25rem;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--line);
}
.accolade-card:first-child{ padding-top: 0; }
.accolade-num{
  font-family: var(--font-mono);
  font-size: 1.6rem;
  color: var(--fg-faint);
  min-width: 2.2rem;
}
.accolade-card h3{
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  margin: 0 0 .3rem;
}
.accolade-card p{ color: var(--fg-faint); font-size: .9rem; margin: 0; }

.edu-degree{ font-weight: 600; margin-bottom: .4rem; }
.edu-meta{ color: var(--fg-faint); font-size: .9rem; margin: 0; }

/* ---------- Contact ---------- */
.contact-links{ display: flex; flex-direction: column; gap: .75rem; }
.contact-link-btn{
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.1rem 1.4rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  color: var(--fg);
  font-weight: 600;
  letter-spacing: .02em;
  cursor: pointer;
  transition: border-color .2s ease, transform .15s ease;
}
.contact-link-btn:hover{ border-color: var(--fg); }
.contact-link-btn:active{ transform: scale(.99); }
.contact-link-btn .arrow{ color: var(--fg-faint); transition: transform .2s ease; }
.contact-link-btn:hover .arrow{ transform: translateX(3px); color: var(--fg); }

.contact-form{ background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 2rem; }
.form-row{ margin-bottom: 1.25rem; }
.form-row label{
  display: block;
  font-family: var(--font-mono);
  font-size: .78rem;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--fg-faint);
  margin-bottom: .5rem;
}
.form-row input, .form-row textarea{
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--fg);
  padding: .75rem .9rem;
  font-family: var(--font-display);
  font-size: .95rem;
  resize: vertical;
}
.form-row input:focus, .form-row textarea:focus{
  outline: none;
  border-color: var(--fg);
}
.form-status{
  margin-top: 1rem;
  font-size: .88rem;
  color: var(--fg-dim);
  min-height: 1.2em;
}
.form-status.success{ color: #2e9e5b; }
.form-status.error{ color: #d1453b; }

/* ---------- Footer ---------- */
.site-footer{ padding: 2.5rem 0; }
.footer-note{ color: var(--fg-faint); font-size: .85rem; }

/* ---------- Cookie banner ---------- */
.cookie-banner{
  position: fixed;
  left: 1.25rem;
  right: 1.25rem;
  bottom: 1.25rem;
  max-width: 620px;
  margin: 0 auto;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: 0 10px 40px rgba(0,0,0,.35);
  z-index: 2000;
  transform: translateY(150%);
  opacity: 0;
  transition: transform .4s ease, opacity .4s ease;
}
.cookie-banner.visible{ transform: translateY(0); opacity: 1; }
.cookie-banner p{ color: var(--fg-dim); font-size: .88rem; margin-bottom: 1rem; line-height: 1.6; }
.cookie-actions{ display: flex; gap: .75rem; justify-content: flex-end; }

/* ---------- Reveal-on-scroll ---------- */
.reveal{ opacity: 0; transform: translateY(16px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in-view{ opacity: 1; transform: translateY(0); }

@media (max-width: 991.98px){
  .section{ padding: 4.5rem 0; }
  .navbar-collapse{ padding-top: 1rem; }
}