/* ==========================================================================
   PATACONTECH / ALEXI HERNANDEZ
   Estética: Clean Tech / Minimalismo de Ingeniería
   Paleta: Slate 50 / Slate 900 / Acento Ámbar Dorado
   ========================================================================== */

:root {
  /* Clean Tech Theme - Light Mode */
  --bg-page: #f8fafc;
  --bg-card: #ffffff;
  --bg-card-hover: #ffffff;
  --bg-subtle: #f1f5f9;
  --bg-input: #f8fafc;
  
  --text-primary: #0f172a;       /* Azul profundo / pizarra */
  --text-secondary: #475569;     /* Pizarra medio */
  --text-muted: #94a3b8;         /* Pizarra suave */
  --text-link: #0f172a;
  
  --accent-amber: #d97706;       /* Ámbar / Dorado técnico */
  --accent-amber-hover: #b45309;
  --accent-amber-light: rgba(217, 119, 6, 0.09);
  --accent-amber-border: rgba(217, 119, 6, 0.28);
  
  --brand-slate: #0f172a;
  --brand-slate-light: rgba(15, 23, 42, 0.05);
  
  --border-subtle: #e2e8f0;
  --border-card: #cbd5e1;
  --border-focus: #0f172a;
  
  --tag-bg: #f1f5f9;
  --tag-text: #334155;
  --tag-border: #e2e8f0;

  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 4px 14px rgba(15, 23, 42, 0.06);
  --shadow-lg: 0 12px 30px rgba(15, 23, 42, 0.09);
  
  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-full: 9999px;
  
  --transition-fast: 0.16s ease;
  --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Inter", "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "JetBrains Mono", "Fira Code", Menlo, Monaco, Consolas, monospace;
}

[data-theme="dark"] {
  /* Clean Tech Theme - Dark Mode */
  --bg-page: #090d16;
  --bg-card: #0f172a;
  --bg-card-hover: #141e33;
  --bg-subtle: #1e293b;
  --bg-input: #1e293b;
  
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-link: #38bdf8;
  
  --accent-amber: #f59e0b;       /* Ámbar luminoso */
  --accent-amber-hover: #fbbf24;
  --accent-amber-light: rgba(245, 158, 11, 0.14);
  --accent-amber-border: rgba(245, 158, 11, 0.35);
  
  --brand-slate: #f8fafc;
  --brand-slate-light: rgba(248, 250, 252, 0.08);
  
  --border-subtle: #1e293b;
  --border-card: #334155;
  --border-focus: #f59e0b;
  
  --tag-bg: #1e293b;
  --tag-text: #cbd5e1;
  --tag-border: #334155;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 14px 32px rgba(0, 0, 0, 0.65);
}

/* ==========================================================================
   Base & Engineering Typography
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-page);
  color: var(--text-primary);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color var(--transition-normal), color var(--transition-normal);
  padding: 36px 16px 80px;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

button, input, textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

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

ul {
  list-style: none;
}

.mono {
  font-family: var(--font-mono);
}

/* ==========================================================================
   Floating Theme Switcher
   ========================================================================== */
.theme-toggle-floating {
  position: fixed;
  top: 24px;
  right: 24px;
  z-index: 100;
  background-color: var(--bg-card);
  border: 1px solid var(--border-card);
  color: var(--text-primary);
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-fast);
}

.theme-toggle-floating:hover {
  border-color: var(--accent-amber);
  transform: scale(1.05);
}

.theme-toggle-floating svg {
  width: 20px;
  height: 20px;
}

/* ==========================================================================
   Layout Containers & Bento Grid
   ========================================================================== */
.container {
  max-width: 1140px;
  margin: 0 auto;
}

.bento-grid-main {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 20px;
  margin-bottom: 24px;
}

.bento-col-8 {
  grid-column: span 8;
}

.bento-col-4 {
  grid-column: span 4;
}

.bento-col-12 {
  grid-column: span 12;
}

.bento-col-6 {
  grid-column: span 6;
}

.bento-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
  transition: border-color var(--transition-normal), box-shadow var(--transition-normal), transform var(--transition-fast);
}

.bento-card:hover {
  box-shadow: var(--shadow-md);
}

.card-header-clean {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}

.card-label-tech {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-amber);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.card-label-tech::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--accent-amber);
}

.card-heading {
  font-size: 1.22rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 10px;
}

/* ==========================================================================
   Hero Bento Card
   ========================================================================== */
.hero-bento {
  padding: 32px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: radial-gradient(circle at 100% 0%, var(--brand-slate-light) 0%, transparent 60%), var(--bg-card);
}

.hero-header-row {
  display: flex;
  align-items: flex-start;
  gap: 24px;
}

.hero-avatar-wrap {
  position: relative;
  width: 104px;
  height: 104px;
  flex-shrink: 0;
}

.hero-avatar {
  width: 100%;
  height: 100%;
  border-radius: var(--radius-md);
  object-fit: cover;
  border: 2px solid var(--border-card);
  background-color: var(--bg-subtle);
}

.hero-status-dot {
  position: absolute;
  bottom: -4px;
  right: -4px;
  width: 16px;
  height: 16px;
  background-color: #10b981;
  border: 3px solid var(--bg-card);
  border-radius: 50%;
}

.hero-title-group {
  flex: 1;
}

.brand-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: var(--radius-xs);
  background-color: var(--accent-amber-light);
  color: var(--accent-amber);
  border: 1px solid var(--accent-amber-border);
  margin-bottom: 10px;
}

.hero-name {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.15;
  letter-spacing: -0.5px;
}

.hero-role {
  font-size: 1.12rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-top: 6px;
  line-height: 1.4;
}

.hero-location-line {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.hero-summary {
  font-size: 0.96rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-top: 20px;
  border-top: 1px solid var(--border-subtle);
  padding-top: 18px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 24px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 9px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
}

.btn svg {
  width: 17px;
  height: 17px;
}

.btn-primary {
  background-color: var(--brand-slate);
  color: var(--bg-page);
  border-color: var(--brand-slate);
}

.btn-primary:hover {
  background-color: var(--accent-amber);
  border-color: var(--accent-amber);
  color: #ffffff;
}

.btn-outline {
  background-color: transparent;
  color: var(--text-primary);
  border-color: var(--border-card);
}

.btn-outline:hover {
  border-color: var(--accent-amber);
  color: var(--accent-amber);
  background-color: var(--accent-amber-light);
}

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

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

/* ==========================================================================
   Quick Stats & Metrics Bento
   ========================================================================== */
.stats-grid-compact {
  display: flex;
  flex-direction: column;
  gap: 12px;
  height: 100%;
  justify-content: space-between;
}

.stat-item-box {
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: border-color var(--transition-fast);
}

.stat-item-box:hover {
  border-color: var(--accent-amber);
}

.stat-number {
  font-family: var(--font-mono);
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1;
}

.stat-number.amber {
  color: var(--accent-amber);
}

.stat-text {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
}

/* ==========================================================================
   3-LAYER ARCHITECTURE DIAGRAM (PATACONTECH CONCEPT)
   ========================================================================== */
.architecture-section {
  grid-column: span 12;
  background-color: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  position: relative;
}

.arch-header {
  margin-bottom: 24px;
}

.arch-intro {
  font-size: 0.94rem;
  color: var(--text-secondary);
  max-width: 780px;
  margin-top: 6px;
  line-height: 1.5;
}

.layers-container {
  display: flex;
  flex-direction: column;
  gap: 14px;
  position: relative;
}

.layer-box {
  background-color: var(--bg-page);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 20px 24px;
  position: relative;
  transition: all var(--transition-fast);
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 24px;
  align-items: center;
}

.layer-box:hover {
  border-color: var(--accent-amber);
  background-color: var(--bg-card);
  box-shadow: var(--shadow-sm);
  transform: translateX(4px);
}

/* Amber indicator for layers */
.layer-box::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  border-radius: var(--radius-xs) 0 0 var(--radius-xs);
  background-color: var(--border-card);
  transition: background-color var(--transition-fast);
}

.layer-box:hover::before {
  background-color: var(--accent-amber);
}

.layer-box.featured::before {
  background-color: var(--accent-amber);
}

.layer-identity {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.layer-badge {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.6px;
  color: var(--accent-amber);
  text-transform: uppercase;
}

.layer-title {
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--text-primary);
}

.layer-details {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.layer-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.45;
}

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

.layer-chip {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  padding: 3px 9px;
  background-color: var(--tag-bg);
  color: var(--tag-text);
  border: 1px solid var(--tag-border);
  border-radius: var(--radius-xs);
  font-weight: 500;
}

/* Layer Connector Flow */
.layer-connector {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 2px 0;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.connector-line {
  flex: 1;
  height: 1px;
  background: dashed 1px var(--border-card);
}

/* ==========================================================================
   Projects Bento Grid (GitHub Repos)
   ========================================================================== */
.projects-header-filter {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 20px;
}

.filter-pills {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.filter-pill {
  background-color: var(--tag-bg);
  color: var(--tag-text);
  border: 1px solid var(--tag-border);
  padding: 5px 12px;
  border-radius: var(--radius-xs);
  font-size: 0.82rem;
  font-family: var(--font-mono);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-pill:hover {
  border-color: var(--accent-amber);
  color: var(--accent-amber);
}

.filter-pill.active {
  background-color: var(--brand-slate);
  color: var(--bg-page);
  border-color: var(--brand-slate);
  font-weight: 600;
}

[data-theme="dark"] .filter-pill.active {
  background-color: var(--accent-amber);
  color: #090d16;
  border-color: var(--accent-amber);
}

.projects-bento-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.project-item-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-sm);
  padding: 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all var(--transition-fast);
}

.project-item-card:hover {
  border-color: var(--accent-amber);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.project-top-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.project-repo-link {
  font-size: 1.05rem;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 6px;
}

.project-repo-link:hover {
  color: var(--accent-amber);
}

.project-stars-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent-amber);
  background-color: var(--accent-amber-light);
  padding: 2px 7px;
  border-radius: var(--radius-xs);
}

.project-desc-text {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin: 8px 0 16px;
}

.project-footer-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-subtle);
  padding-top: 12px;
  font-size: 0.8rem;
}

.project-lang-indicator {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  color: var(--text-muted);
}

.lang-circle {
  width: 9px;
  height: 9px;
  border-radius: 50%;
}

.lang-java { background-color: #b07219; }
.lang-gherkin { background-color: #5b2063; }

/* ==========================================================================
   Experience Timeline (Clean Minimalist)
   ========================================================================== */
.experience-timeline {
  display: flex;
  flex-direction: column;
  gap: 22px;
  position: relative;
  padding-left: 20px;
  border-left: 2px solid var(--border-card);
  margin-left: 10px;
}

.exp-item {
  position: relative;
}

.exp-dot {
  position: absolute;
  left: -27px;
  top: 5px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: var(--bg-card);
  border: 2px solid var(--accent-amber);
}

.exp-header {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
}

.exp-role {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
}

.exp-period {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent-amber);
  font-weight: 600;
}

.exp-company {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-top: 2px;
}

.exp-bullets {
  margin-top: 10px;
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.55;
  list-style: square;
  padding-left: 18px;
}

.exp-bullets li {
  margin-bottom: 4px;
}

/* ==========================================================================
   Skills Matrix
   ========================================================================== */
.skills-stack-matrix {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.skill-category-block {
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 14px 18px;
}

.skill-category-name {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.skill-tag-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.tech-tag {
  background-color: var(--bg-card);
  border: 1px solid var(--border-card);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  padding: 4px 10px;
  border-radius: var(--radius-xs);
  transition: all var(--transition-fast);
}

.tech-tag:hover {
  border-color: var(--accent-amber);
  color: var(--accent-amber);
}

.tech-tag.featured {
  background-color: var(--accent-amber-light);
  border-color: var(--accent-amber-border);
  color: var(--accent-amber);
  font-weight: 600;
}

/* ==========================================================================
   Sidebar Cards & Lightsail Badge
   ========================================================================== */
.lightsail-minimal-badge {
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-sm);
  padding: 16px;
}

.lightsail-status-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.ping-indicator {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #10b981;
}

.ping-indicator::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: #10b981;
  box-shadow: 0 0 6px #10b981;
}

/* ==========================================================================
   Contact Modal & Toast
   ========================================================================== */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(15, 23, 42, 0.7);
  backdrop-filter: blur(4px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.modal-backdrop.open {
  opacity: 1;
  visibility: visible;
}

.modal-container {
  background-color: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 500px;
  overflow: hidden;
  transform: translateY(16px);
  transition: transform var(--transition-normal);
}

.modal-backdrop.open .modal-container {
  transform: translateY(0);
}

.modal-header {
  padding: 18px 24px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
}

.modal-close-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color var(--transition-fast);
}

.modal-close-btn:hover {
  color: var(--accent-amber);
}

.modal-body {
  padding: 24px;
}

.form-group {
  margin-bottom: 16px;
}

.form-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.form-input,
.form-textarea {
  width: 100%;
  background-color: var(--bg-input);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-xs);
  padding: 10px 14px;
  font-size: 0.92rem;
  color: var(--text-primary);
  outline: none;
  transition: border-color var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
  border-color: var(--accent-amber);
}

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  background-color: var(--bg-subtle);
}

/* Toast Message */
.toast-notice {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background-color: var(--brand-slate);
  color: #ffffff;
  padding: 12px 20px;
  border-radius: var(--radius-xs);
  font-family: var(--font-mono);
  font-size: 0.86rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 10px;
  box-shadow: var(--shadow-lg);
  z-index: 300;
  border-left: 4px solid var(--accent-amber);
  transform: translateY(100px);
  opacity: 0;
  transition: transform var(--transition-normal), opacity var(--transition-normal);
}

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

.toast-notice svg {
  width: 18px;
  height: 18px;
  color: var(--accent-amber);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  margin-top: 48px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-muted);
}

.site-footer a {
  color: var(--text-secondary);
}

.site-footer a:hover {
  color: var(--accent-amber);
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */
@media (max-width: 992px) {
  .bento-col-8, .bento-col-4, .bento-col-6 {
    grid-column: span 12;
  }
  
  .layer-box {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  
  .projects-bento-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  body {
    padding: 20px 12px 60px;
  }

  .hero-header-row {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .hero-avatar-wrap {
    width: 80px;
    height: 80px;
  }
  
  .hero-name {
    font-size: 1.6rem;
  }
  
  .theme-toggle-floating {
    top: 14px;
    right: 14px;
    width: 38px;
    height: 38px;
  }
}