/* ==========================================================================
   Kewal Patel — Personal Engineering Portfolio
   Editorial Swiss-Grid Typography & Clean Architectural Layout
   ========================================================================== */

:root {
  --bg: #f6f5f2;
  --bg-elevated: #ffffff;
  --bg-subtle: #eceae4;
  --text-main: #141413;
  --text-secondary: #4a4945;
  --text-muted: #787670;
  --accent: #c84b31;
  --accent-soft: rgba(200, 75, 49, 0.1);
  --status-green: #1f7a4c;
  --border: #dcd9d0;
  --border-strong: #141413;
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-serif: 'Instrument Serif', Georgia, serif;
  --font-mono: 'JetBrains Mono', monospace;
}

[data-theme="dark"] {
  --bg: #111110;
  --bg-elevated: #191918;
  --bg-subtle: #222220;
  --text-main: #f3f2ee;
  --text-secondary: #b5b3ad;
  --text-muted: #7c7a74;
  --accent: #e06d53;
  --accent-soft: rgba(224, 109, 83, 0.14);
  --status-green: #3dd68c;
  --border: #2c2c29;
  --border-strong: #f3f2ee;
}

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

html {
  scroll-behavior: smooth;
  font-family: var(--font-sans);
  background-color: var(--bg);
  color: var(--text-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body {
  background-color: var(--bg);
  color: var(--text-main);
  transition: background-color 0.25s ease, color 0.25s ease;
}

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* ==========================================================================
   Header / Minimal Top Bar
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background-color: var(--bg);
  border-bottom: 1px solid var(--border);
  transition: background-color 0.25s ease, border-color 0.25s ease;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.site-logo {
  text-decoration: none;
  color: var(--text-main);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.logo-dot {
  width: 8px;
  height: 8px;
  background-color: var(--accent);
  border-radius: 50%;
  display: inline-block;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.site-nav a {
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s ease;
}

.site-nav a:hover {
  color: var(--text-main);
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.theme-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-main);
  padding: 0.42rem 0.75rem;
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  cursor: pointer;
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.theme-btn:hover {
  border-color: var(--text-main);
  background-color: var(--bg-subtle);
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.68rem 1.3rem;
  border-radius: 6px;
  font-size: 0.86rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s ease;
  border: 1px solid transparent;
  font-family: var(--font-sans);
}

.btn-solid {
  background-color: var(--text-main);
  color: var(--bg);
}

.btn-solid:hover {
  opacity: 0.86;
}

.btn-ghost {
  background-color: transparent;
  color: var(--text-main);
  border-color: var(--border);
}

.btn-ghost:hover {
  border-color: var(--text-main);
  background-color: var(--bg-subtle);
}

.btn-sm {
  padding: 0.36rem 0.75rem;
  font-size: 0.78rem;
}

.btn-danger {
  background-color: transparent;
  color: #d93829;
  border-color: rgba(217, 56, 41, 0.35);
  padding: 0.36rem 0.75rem;
  font-size: 0.78rem;
}

.btn-danger:hover {
  background-color: rgba(217, 56, 41, 0.1);
}

/* ==========================================================================
   Hero Section (Asymmetric Editorial Layout + Portrait Card)
   ========================================================================== */
.hero {
  padding: 4.5rem 0 4.5rem;
  border-bottom: 1px solid var(--border);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.3fr 0.9fr;
  gap: 3.75rem;
  align-items: start;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-secondary);
  margin-bottom: 1.4rem;
  padding: 0.3rem 0.7rem;
  background-color: var(--bg-subtle);
  border-radius: 4px;
}

.live-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--status-green);
}

.hero-title {
  font-size: clamp(2.4rem, 4.8vw, 3.9rem);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.07;
  margin-bottom: 1.35rem;
}

.hero-title em {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  color: var(--accent);
}

.hero-lead {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin-bottom: 2rem;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-bottom: 2.5rem;
}

.metrics-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 3rem;
  padding-top: 1.65rem;
  border-top: 1px solid var(--border);
}

.metric-block .metric-value {
  font-size: 1.7rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.metric-block .metric-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* Portrait & Architectural Dossier Card on Right */
.dossier-card {
  background-color: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 12px 32px -12px rgba(20, 20, 19, 0.08);
}

.portrait-frame {
  width: 100%;
  aspect-ratio: 4 / 3.6;
  overflow: hidden;
  background-color: var(--bg-subtle);
  border-bottom: 1px solid var(--border);
  position: relative;
}

.portrait-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 20%;
  display: block;
  transition: transform 0.5s ease;
}

.dossier-card:hover .portrait-img {
  transform: scale(1.02);
}

.dossier-body {
  padding: 1.5rem 1.65rem;
}

.dossier-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 0.85rem;
  margin-bottom: 1.1rem;
  border-bottom: 1px solid var(--border);
}

.dossier-title {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
  font-weight: 600;
}

.dossier-list {
  display: flex;
  flex-direction: column;
  gap: 0.95rem;
}

.dossier-row {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.dossier-label {
  font-family: var(--font-mono);
  font-size: 0.71rem;
  color: var(--text-muted);
  text-transform: uppercase;
}

.dossier-val {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-main);
}

/* ==========================================================================
   Section Headers & Swiss Layout
   ========================================================================== */
.section-block {
  padding: 5rem 0;
  border-bottom: 1px solid var(--border);
}

.section-top {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-end;
  gap: 1.5rem;
  margin-bottom: 2.75rem;
}

.section-index {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.4rem;
  display: block;
}

.section-heading {
  font-size: clamp(1.75rem, 3vw, 2.35rem);
  font-weight: 700;
  letter-spacing: -0.025em;
}

/* ==========================================================================
   Selected Work / Case Studies (With Optional Tech, Tools, Skills & Dates)
   ========================================================================== */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 2rem;
}

.filter-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.pill-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  padding: 0.42rem 0.9rem;
  border-radius: 4px;
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  font-family: var(--font-sans);
  transition: all 0.18s ease;
}

.pill-btn:hover {
  border-color: var(--text-main);
  color: var(--text-main);
}

.pill-btn.active {
  background-color: var(--text-main);
  color: var(--bg);
  border-color: var(--text-main);
}

.search-box {
  background-color: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--text-main);
  padding: 0.48rem 0.9rem;
  border-radius: 4px;
  font-size: 0.85rem;
  min-width: 240px;
  font-family: var(--font-sans);
  outline: none;
}

.search-box:focus {
  border-color: var(--text-main);
}

/* Editorial Project Ledger List */
.project-ledger {
  border-top: 1px solid var(--border);
}

.project-row {
  border-bottom: 1px solid var(--border);
  transition: background-color 0.2s ease;
}

.project-summary {
  display: grid;
  grid-template-columns: 52px 1.5fr 1fr auto;
  align-items: center;
  gap: 1.5rem;
  padding: 1.45rem 0.75rem;
  cursor: pointer;
  user-select: none;
}

.project-row:hover {
  background-color: var(--bg-elevated);
}

.proj-num {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
}

.proj-title-wrap h3 {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.015em;
  color: var(--text-main);
}

.proj-submeta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem;
  margin-top: 0.2rem;
}

.proj-domain {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
}

.proj-date-badge {
  font-family: var(--font-mono);
  font-size: 0.73rem;
  color: var(--text-muted);
  padding: 0.1rem 0.48rem;
  border: 1px solid var(--border);
  border-radius: 3px;
}

.proj-stack-preview {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.chip {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 0.2rem 0.55rem;
  background-color: var(--bg-subtle);
  color: var(--text-secondary);
  border-radius: 3px;
}

.chip-tool {
  background-color: var(--accent-soft);
  color: var(--accent);
}

.chip-skill {
  border: 1px solid var(--border);
  background-color: transparent;
  color: var(--text-main);
}

.proj-toggle {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-muted);
  padding: 0.25rem 0.5rem;
  transition: transform 0.2s ease;
}

.project-row.expanded .proj-toggle {
  transform: rotate(45deg);
  color: var(--accent);
}

.project-details {
  display: none;
  padding: 0 0.75rem 1.85rem calc(52px + 1.5rem + 0.75rem);
  max-width: 920px;
}

.project-row.expanded .project-details {
  display: block;
}

.project-desc {
  color: var(--text-secondary);
  font-size: 0.96rem;
  margin-bottom: 1.1rem;
}

.project-bullets {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  margin-bottom: 1.35rem;
}

.project-bullets li {
  font-size: 0.9rem;
  color: var(--text-main);
  position: relative;
  padding-left: 1.15rem;
}

.project-bullets li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--accent);
}

/* 3-Set Project Metadata Breakdown (Technologies, Tools, Skills) */
.project-meta-sets {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 1rem;
  padding-top: 1.1rem;
  border-top: 1px dashed var(--border);
}

.meta-set-box {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.meta-set-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}

.meta-set-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

/* ==========================================================================
   Experience & Credentials
   ========================================================================== */
.exp-item {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 2.5rem;
  padding: 2rem 0;
  border-top: 1px solid var(--border);
}

.exp-meta .exp-period {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--accent);
  font-weight: 600;
}

.exp-meta .exp-company {
  font-size: 1.05rem;
  font-weight: 700;
  margin-top: 0.3rem;
}

.exp-content h3 {
  font-size: 1.3rem;
  margin-bottom: 0.65rem;
}

.exp-content p {
  color: var(--text-secondary);
  margin-bottom: 1.1rem;
}

/* ==========================================================================
   Skills Matrix (Architectural Columns)
   ========================================================================== */
.skills-table {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  border-top: 1px solid var(--border);
  border-left: 1px solid var(--border);
}

.skill-col {
  padding: 1.75rem;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background-color: var(--bg-elevated);
}

.skill-col h3 {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent);
  margin-bottom: 1.1rem;
}

.skill-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.skill-col li {
  font-size: 0.92rem;
  color: var(--text-main);
  font-weight: 500;
}

/* ==========================================================================
   Education Grid
   ========================================================================== */
.edu-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.edu-card {
  background-color: var(--bg-elevated);
  border: 1px solid var(--border);
  padding: 1.6rem;
  border-radius: 6px;
}

.edu-year {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--accent);
}

.edu-card h3 {
  font-size: 1.08rem;
  margin: 0.4rem 0 0.3rem;
}

.edu-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.edu-score {
  margin-top: 0.9rem;
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  padding: 0.2rem 0.55rem;
  background-color: var(--bg-subtle);
  border-radius: 3px;
}

/* ==========================================================================
   Contact Section
   ========================================================================== */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 3.5rem;
}

.contact-direct {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.contact-line {
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}

.contact-line span {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 0.25rem;
}

.contact-line a,
.contact-line strong {
  font-size: 1.05rem;
  color: var(--text-main);
  text-decoration: none;
  font-weight: 600;
}

.contact-line a:hover {
  color: var(--accent);
}

.contact-form {
  background-color: var(--bg-elevated);
  border: 1px solid var(--border);
  padding: 2rem;
  border-radius: 6px;
}

.field {
  margin-bottom: 1.1rem;
}

.field label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.73rem;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 0.35rem;
}

.input-control {
  width: 100%;
  padding: 0.65rem 0.85rem;
  background-color: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  outline: none;
}

.input-control:focus {
  border-color: var(--text-main);
}

textarea.input-control {
  min-height: 105px;
  resize: vertical;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  padding: 2.5rem 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

/* ==========================================================================
   Hidden URL Content Manager Modal (Full Add + Edit + Delete)
   ========================================================================== */
.cms-backdrop {
  position: fixed;
  inset: 0;
  z-index: 999;
  background-color: rgba(15, 15, 14, 0.82);
  backdrop-filter: blur(8px);
  display: none;
  overflow-y: auto;
  padding: 2rem 1rem;
}

.cms-backdrop.open {
  display: block;
}

.cms-window {
  max-width: 1020px;
  margin: 0 auto;
  background-color: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
}

.cms-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem 1.75rem;
  background-color: var(--bg-subtle);
  border-bottom: 1px solid var(--border);
}

.cms-topbar h2 {
  font-size: 1rem;
  font-family: var(--font-mono);
}

.cms-body {
  padding: 1.75rem;
}

.cms-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}

.cms-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.cms-grid-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 1rem;
}

.cms-form-box {
  background-color: var(--bg-subtle);
  border: 1px solid var(--border);
  padding: 1.35rem;
  border-radius: 6px;
  margin-bottom: 2rem;
}

.cms-list {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  margin-top: 1rem;
}

.cms-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 1rem;
  background-color: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px;
}

.cms-item-actions {
  display: flex;
  gap: 0.5rem;
  flex-shrink: 0;
}

.toast-banner {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 2000;
  background-color: var(--text-main);
  color: var(--bg);
  padding: 0.75rem 1.2rem;
  border-radius: 4px;
  font-size: 0.85rem;
  font-weight: 600;
  transform: translateY(140%);
  opacity: 0;
  transition: all 0.25s ease;
}

.toast-banner.show {
  transform: translateY(0);
  opacity: 1;
}

@media (max-width: 860px) {
  .hero-grid,
  .exp-item,
  .contact-layout,
  .cms-grid-2,
  .cms-grid-3 {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .project-summary {
    grid-template-columns: 36px 1fr auto;
  }
  .proj-stack-preview {
    display: none;
  }
  .project-details {
    padding-left: 0.75rem;
  }
  .site-nav {
    display: none;
  }
}