/* --------------------------------------------------
   Adam Kowalski IT - Design System & Stylesheet
   Dark Mode Developer Portfolio
-------------------------------------------------- */

:root {
  --bg-main: #0B0F19;
  --bg-card: #131C2E;
  --bg-card-hover: #17243B;
  --bg-glass: rgba(19, 28, 46, 0.85);
  --bg-terminal: #070A10;
  
  --primary: #00D2FF;
  --primary-glow: rgba(0, 210, 255, 0.25);
  --primary-hover: #33DCFF;
  
  --secondary: #10B981;
  --secondary-glow: rgba(16, 185, 129, 0.25);
  
  --text-main: #F8FAFC;
  --text-muted: #94A3B8;
  --text-dim: #64748B;
  
  --border: #1E293B;
  --border-focus: #00D2FF;
  
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;
  
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  
  --shadow-card: 0 10px 25px rgba(0, 0, 0, 0.45);
  --shadow-glow: 0 8px 30px rgba(0, 210, 255, 0.12);
  
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
}

/* Base Reset & Typography (Mobile-First) */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  background-color: var(--bg-main);
  color: var(--text-main);
  font-family: var(--font-sans);
  line-height: 1.6;
  overflow-x: hidden;
  padding-bottom: 70px; /* Space for mobile bottom bar */
}

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

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

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}

/* Layout Helpers */
.container {
  width: 100%;
  max-width: 1240px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

.text-cyan {
  color: var(--primary);
}

.text-emerald {
  color: var(--secondary);
}

.text-center {
  text-align: center;
}

.text-gradient {
  background: linear-gradient(135deg, #00D2FF 0%, #10B981 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all var(--transition-normal);
  border: 1px solid transparent;
  text-decoration: none;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.875rem;
}

.btn-primary {
  background-color: var(--primary);
  color: #040914;
  box-shadow: 0 4px 18px var(--primary-glow);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background-color: var(--primary-hover);
  box-shadow: 0 6px 24px rgba(0, 210, 255, 0.4);
  transform: translateY(-2px);
}

.btn-secondary {
  background-color: rgba(255, 255, 255, 0.04);
  border-color: var(--border);
  color: var(--text-main);
}

.btn-secondary:hover,
.btn-secondary:focus-visible {
  background-color: rgba(255, 255, 255, 0.08);
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
}

.btn-block {
  width: 100%;
}

/* Header & Sticky Nav */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 14px 0;
  transition: background var(--transition-fast);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}

.logo-terminal {
  font-family: var(--font-mono);
  color: var(--secondary);
  background: rgba(16, 185, 129, 0.15);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.mobile-toggle {
  background: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 10px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
}

.hamburger-line {
  display: block;
  width: 20px;
  height: 2px;
  background-color: var(--text-main);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.primary-nav {
  position: fixed;
  top: 61px;
  left: 0;
  right: 0;
  background: var(--bg-main);
  border-bottom: 1px solid var(--border);
  padding: 24px 20px;
  display: none;
  flex-direction: column;
  gap: 20px;
  box-shadow: var(--shadow-card);
}

.primary-nav.is-active {
  display: flex;
}

.nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.nav-link {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-muted);
  padding: 4px 0;
  display: inline-block;
}

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

/* Hero Section */
.hero-section {
  position: relative;
  padding: 50px 0 60px;
  overflow: hidden;
}

.hero-bg-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0.18;
  pointer-events: none;
  z-index: -1;
}

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

.hero-grid {
  display: flex;
  flex-direction: column;
  gap: 36px;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: #34D399;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 18px;
}

.status-dot {
  width: 8px;
  height: 8px;
  background-color: var(--secondary);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--secondary);
  animation: pulse 2s infinite;
}

.status-dot.sm {
  width: 6px;
  height: 6px;
}

@keyframes pulse {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.2); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

.hero-title {
  font-size: 2.1rem;
  line-height: 1.2;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 18px;
}

.hero-description {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 24px;
  max-width: 580px;
}

.tech-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 30px;
}

.pill {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  background: #111827;
  border: 1px solid var(--border);
  color: #CBD5E1;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
}

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

/* Interactive IDE / Terminal Card */
.terminal-card {
  background: var(--bg-terminal);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.terminal-header {
  background: #0D1322;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  gap: 10px;
}

.terminal-controls {
  display: flex;
  gap: 6px;
}

.control-btn {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.control-btn.red { background-color: #EF4444; }
.control-btn.yellow { background-color: #F59E0B; }
.control-btn.green { background-color: #10B981; }

.terminal-tabs {
  display: flex;
  gap: 4px;
  overflow-x: auto;
}

.tab-btn {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 4px 10px;
  border-radius: 4px;
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition-fast);
}

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

.tab-btn.active {
  background: #162035;
  border-color: var(--border);
  color: var(--primary);
}

.terminal-body {
  padding: 18px 16px;
  min-height: 260px;
  overflow-x: auto;
}

.code-block {
  display: none;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.6;
  color: #E2E8F0;
}

.code-block.active {
  display: block;
}

/* Syntax Highlighting */
.kw { color: #F43F5E; font-weight: 600; } /* keyword */
.cls { color: #38BDF8; } /* class */
.fn { color: #34D399; } /* function */
.str { color: #FBBF24; } /* string */
.ann { color: #A78BFA; } /* annotation */
.num { color: #FB7185; } /* number */
.com { color: #64748B; font-style: italic; } /* comment */

.terminal-footer {
  background: #0D1322;
  border-top: 1px solid var(--border);
  padding: 8px 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-dim);
}

.term-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--secondary);
}

/* Sections General */
.section {
  padding: 70px 0;
}

.section-header {
  margin-bottom: 40px;
}

.section-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--primary);
  background: rgba(0, 210, 255, 0.08);
  border: 1px solid rgba(0, 210, 255, 0.2);
  padding: 4px 12px;
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
}

.section-title {
  font-size: 1.8rem;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.section-subtitle {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 620px;
  margin-left: auto;
  margin-right: auto;
}

/* Bento Grid Tech Stack */
.bento-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

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

.bento-card:hover {
  border-color: rgba(0, 210, 255, 0.4);
  box-shadow: var(--shadow-glow);
  transform: translateY(-3px);
}

.tech-icon-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 14px;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.card-text {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 18px;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.card-tags span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  padding: 3px 8px;
  border-radius: 4px;
  color: #CBD5E1;
}

.bento-db {
  display: flex;
  flex-direction: column;
}

.card-image-wrap {
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 16px;
  border: 1px solid var(--border);
}

.bento-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.bento-card:hover .bento-img {
  transform: scale(1.04);
}

/* Workflow Section */
.workflow-section {
  background: #0E1424;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.workflow-grid {
  display: flex;
  flex-direction: column;
  gap: 36px;
}

.image-container {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-card);
}

.workflow-img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

.workflow-lead {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 26px;
}

.workflow-points {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.wf-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.wf-number {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 700;
  color: var(--primary);
  background: rgba(0, 210, 255, 0.1);
  border: 1px solid rgba(0, 210, 255, 0.3);
  width: 38px;
  height: 38px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.wf-heading {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.wf-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* Process Steps */
.process-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.process-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.step-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.step-badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--secondary);
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.25);
  padding: 3px 8px;
  border-radius: 4px;
}

.step-icon {
  font-size: 1.3rem;
}

.step-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.step-text {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* Contact Section & Form */
.contact-grid {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.contact-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-card);
}

.contact-card-title {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.contact-card-intro {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 22px;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

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

.form-group label {
  font-size: 0.85rem;
  font-weight: 500;
  color: #CBD5E1;
}

.req {
  color: #F43F5E;
}

.form-control {
  background: #090D17;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: 0.92rem;
  color: var(--text-main);
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px var(--primary-glow);
}

.form-select {
  cursor: pointer;
}

.form-error {
  display: none;
  font-size: 0.78rem;
  color: #F87171;
}

.form-control.is-invalid {
  border-color: #EF4444;
}

.form-control.is-invalid + .form-error {
  display: block;
}

.form-feedback {
  display: none;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  margin-top: 10px;
}

.form-feedback.success {
  display: block;
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.4);
  color: #34D399;
}

/* Contact Direct Info & Google Maps */
.direct-contacts {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 24px;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 14px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border);
  padding: 12px 14px;
  border-radius: var(--radius-md);
}

.ci-icon {
  font-size: 1.25rem;
}

.ci-label {
  display: block;
  font-size: 0.75rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.ci-value {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-main);
}

.ci-value:hover {
  color: var(--primary);
}

.maps-container {
  background: #090D17;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.map-header {
  padding: 10px 14px;
  display: flex;
  align-items: center;
  gap: 8px;
  border-bottom: 1px solid var(--border);
  background: #0F1626;
}

.map-dot {
  width: 8px;
  height: 8px;
  background: var(--primary);
  border-radius: 50%;
}

.map-title {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
}

.map-frame-wrapper {
  position: relative;
  width: 100%;
  height: 220px;
}

.google-map-iframe {
  width: 100%;
  height: 100%;
  border: 0;
  filter: invert(90%) hue-rotate(180deg) contrast(1.1) brightness(0.85);
}

/* Mobile Quick Contact Bar */
.mobile-quick-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 99;
  background: rgba(11, 15, 25, 0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-top: 1px solid var(--border);
  display: flex;
  padding: 8px 12px;
  gap: 8px;
}

.quick-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 8px;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  text-decoration: none;
}

.quick-phone {
  background: var(--primary);
  color: #050B14;
}

.quick-mail {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border);
  color: var(--text-main);
}

/* Footer */
.site-footer {
  background: #070A12;
  border-top: 1px solid var(--border);
  padding: 40px 0;
}

.footer-content {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.footer-tagline {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-top: 8px;
  max-width: 460px;
}

.footer-meta {
  font-size: 0.82rem;
  color: var(--text-dim);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 16px;
}

.footer-contact-summary {
  margin-top: 6px;
}

.footer-contact-summary a {
  color: var(--primary);
}

/* --------------------------------------------------
   Progressive Enhancement / Responsive Breakpoints
-------------------------------------------------- */

/* Tablet Breakpoint (768px+) */
@media (min-width: 768px) {
  .hero-title {
    font-size: 2.8rem;
  }

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

  .bento-span-2 {
    grid-column: span 2;
  }

  .process-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .contact-grid {
    grid-template-columns: 1.1fr 0.9fr;
    display: grid;
  }

  .map-frame-wrapper {
    height: 240px;
  }
}

/* Desktop Breakpoint (1024px+) */
@media (min-width: 1024px) {
  body {
    padding-bottom: 0;
  }

  .mobile-toggle {
    display: none;
  }

  .mobile-quick-bar {
    display: none;
  }

  .primary-nav {
    position: static;
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 32px;
    padding: 0;
    background: transparent;
    border-bottom: none;
    box-shadow: none;
  }

  .nav-list {
    flex-direction: row;
    gap: 28px;
  }

  .hero-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    align-items: center;
    gap: 48px;
  }

  .hero-title {
    font-size: 3.2rem;
  }

  .workflow-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 48px;
  }

  .bento-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .bento-java {
    grid-column: span 2;
  }

  .bento-db {
    grid-column: span 1;
  }

  .bento-python {
    grid-column: span 1;
  }

  .bento-frontend {
    grid-column: span 2;
  }

  .footer-content {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }

  .footer-meta {
    border-top: none;
    padding-top: 0;
    text-align: right;
  }
}