/* ============================================
   jnikolaidis.com — Shared Stylesheet
   ============================================ */

/* --- CSS Custom Properties --- */
:root {
  --color-text: #1a1a2e;
  --color-bg: #fafafa;
  --color-muted: #6b7280;
  --color-border: #e5e7eb;
  --color-linkedin: #0077b5;
  --color-accent: #2563eb;
  --color-white: #ffffff;
  --color-card-bg: #ffffff;
  --color-danger: #dc2626;
  --color-success: #16a34a;

  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;

  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);

  --transition: 150ms ease;
}

/* --- Reset / Normalize --- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  -moz-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: 400;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
}

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

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

a:hover {
  color: var(--color-text);
}

ul, ol {
  list-style: none;
}

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

button {
  cursor: pointer;
  border: none;
  background: none;
}

h1, h2, h3, h4, h5, h6 {
  line-height: 1.3;
  font-weight: 600;
}

/* --- Typography --- */
h1 { font-size: var(--font-size-3xl); }
h2 { font-size: var(--font-size-2xl); }
h3 { font-size: var(--font-size-xl); }
h4 { font-size: var(--font-size-lg); }

.text-muted {
  color: var(--color-muted);
}

.text-sm {
  font-size: var(--font-size-sm);
}

.text-xs {
  font-size: var(--font-size-xs);
}

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

.tagline {
  font-size: var(--font-size-lg);
  color: var(--color-muted);
  font-weight: 400;
  letter-spacing: 0.01em;
}

/* --- Layout --- */
.container {
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--spacing-lg);
  padding-right: var(--spacing-lg);
}

.container--wide {
  max-width: 800px;
}

.container--admin {
  max-width: 960px;
}

.page {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: var(--spacing-3xl);
  padding-bottom: var(--spacing-2xl);
}

.section {
  margin-bottom: var(--spacing-2xl);
}

/* --- Avatar --- */
.avatar {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: var(--shadow-md);
  border: 4px solid var(--color-white);
  display: block;
  margin-left: auto;
  margin-right: auto;
}

.avatar--sm {
  width: 80px;
  height: 80px;
}

.avatar--lg {
  width: 220px;
  height: 220px;
}

/* --- Divider --- */
.divider {
  width: 60px;
  height: 1px;
  background-color: var(--color-border);
  border: none;
  margin: var(--spacing-xl) auto;
}

.divider--wide {
  width: 100%;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: 0.7rem 1.6rem;
  font-size: var(--font-size-sm);
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: all var(--transition);
  text-decoration: none;
  border: 2px solid transparent;
  line-height: 1;
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.btn:active {
  transform: translateY(0);
}

.btn-linkedin {
  background-color: var(--color-linkedin);
  color: var(--color-white);
  border-color: var(--color-linkedin);
}

.btn-linkedin:hover {
  background-color: #006097;
  border-color: #006097;
  color: var(--color-white);
}

.btn-linkedin svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

.btn-primary {
  background-color: var(--color-accent);
  color: var(--color-white);
  border-color: var(--color-accent);
}

.btn-primary:hover {
  background-color: #1d4ed8;
  border-color: #1d4ed8;
  color: var(--color-white);
}

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

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

.btn-danger {
  background-color: var(--color-danger);
  color: var(--color-white);
  border-color: var(--color-danger);
}

.btn-danger:hover {
  background-color: #b91c1c;
  border-color: #b91c1c;
  color: var(--color-white);
}

.btn-sm {
  padding: 0.45rem 1rem;
  font-size: var(--font-size-xs);
}

.btn-block {
  display: flex;
  width: 100%;
}

/* --- Cards --- */
.card {
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition);
}

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

.card-header {
  margin-bottom: var(--spacing-md);
}

.card-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.card-subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-muted);
}

.card-body {
  font-size: var(--font-size-sm);
  color: var(--color-muted);
  line-height: 1.7;
}

.card-footer {
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-border);
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

/* Contact card variant */
.card--contact {
  text-align: center;
  padding: var(--spacing-2xl);
}

.card--contact .avatar {
  margin: 0 auto var(--spacing-lg);
}

/* Project card variant */
.card--project {
  display: flex;
  flex-direction: column;
}

.card--project .card-body {
  flex: 1;
}

.card-grid {
  display: grid;
  gap: var(--spacing-lg);
  grid-template-columns: 1fr;
}

/* --- Tags / Badges --- */
.tag {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  font-size: var(--font-size-xs);
  font-weight: 500;
  border-radius: var(--radius-full);
  background-color: #f3f4f6;
  color: var(--color-muted);
}

.tag--accent {
  background-color: #eff6ff;
  color: var(--color-accent);
}

/* --- Contact Info --- */
.contact-links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

.contact-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-sm);
  color: var(--color-muted);
  transition: color var(--transition);
}

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

.contact-link svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* --- Forms (Admin Dashboard) --- */
.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 500;
  margin-bottom: var(--spacing-xs);
  color: var(--color-text);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 0.6rem 0.8rem;
  font-size: var(--font-size-sm);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-white);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-textarea {
  resize: vertical;
  min-height: 100px;
}

.form-hint {
  font-size: var(--font-size-xs);
  color: var(--color-muted);
  margin-top: var(--spacing-xs);
}

.form-error {
  font-size: var(--font-size-xs);
  color: var(--color-danger);
  margin-top: var(--spacing-xs);
}

.form-actions {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-xl);
}

/* --- Tables (Admin) --- */
.table-wrapper {
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-sm);
}

th, td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

th {
  font-weight: 500;
  background-color: #f9fafb;
  color: var(--color-muted);
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

tr:last-child td {
  border-bottom: none;
}

tr:hover td {
  background-color: #f9fafb;
}

/* --- Alert / Notice --- */
.alert {
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-lg);
}

.alert--success {
  background-color: #f0fdf4;
  color: var(--color-success);
  border: 1px solid #bbf7d0;
}

.alert--error {
  background-color: #fef2f2;
  color: var(--color-danger);
  border: 1px solid #fecaca;
}

.alert--info {
  background-color: #eff6ff;
  color: var(--color-accent);
  border: 1px solid #bfdbfe;
}

/* --- Footer --- */
.footer {
  text-align: center;
  padding: var(--spacing-xl) 0;
  font-size: var(--font-size-sm);
  color: var(--color-muted);
}

/* --- Bio Paragraphs --- */
.bio {
  font-size: var(--font-size-base);
  color: var(--color-muted);
  line-height: 1.75;
}

.bio p + p {
  margin-top: var(--spacing-md);
}

/* --- Utility --- */
.mt-xs  { margin-top: var(--spacing-xs); }
.mt-sm  { margin-top: var(--spacing-sm); }
.mt-md  { margin-top: var(--spacing-md); }
.mt-lg  { margin-top: var(--spacing-lg); }
.mt-xl  { margin-top: var(--spacing-xl); }
.mt-2xl { margin-top: var(--spacing-2xl); }

.mb-xs  { margin-bottom: var(--spacing-xs); }
.mb-sm  { margin-bottom: var(--spacing-sm); }
.mb-md  { margin-bottom: var(--spacing-md); }
.mb-lg  { margin-bottom: var(--spacing-lg); }
.mb-xl  { margin-bottom: var(--spacing-xl); }
.mb-2xl { margin-bottom: var(--spacing-2xl); }

.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }

.hidden { display: none; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* --- Responsive --- */
@media (max-width: 768px) {
  :root {
    --font-size-3xl: 1.5rem;
    --font-size-2xl: 1.25rem;
  }

  .container {
    padding-left: var(--spacing-md);
    padding-right: var(--spacing-md);
  }

  .page {
    padding-top: var(--spacing-2xl);
    padding-bottom: var(--spacing-xl);
  }

  .avatar {
    width: 140px;
    height: 140px;
  }

  .avatar--lg {
    width: 180px;
    height: 180px;
  }

  .card {
    padding: var(--spacing-lg);
  }

  .card--contact {
    padding: var(--spacing-xl);
  }

  .form-actions {
    flex-direction: column;
  }

  .form-actions .btn {
    width: 100%;
  }
}

@media (min-width: 640px) {
  .card-grid--2 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .avatar {
    width: 120px;
    height: 120px;
  }

  .tagline {
    font-size: var(--font-size-base);
  }

  .btn {
    padding: 0.6rem 1.2rem;
  }
}

/* ==========================================================================
   Contact Card Page — /c/personal & /c/work
   Mobile-first design for phone scanning
   ========================================================================== */

/* Page wrapper for contact card pages */
body.contact-page {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: 24px 16px 40px;
}

/* Card Container */
.contact-card {
  width: 100%;
  max-width: 420px;
  background: var(--color-card-bg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

/* Header / Profile Section */
.contact-card .card-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 32px 24px 24px;
  text-align: center;
  margin-bottom: 0;
}

.contact-card .profile-photo {
  width: 110px;
  height: 110px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 16px;
  border: 3px solid var(--color-border);
}

.contact-card .profile-name {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 4px;
  color: var(--color-text);
}

.contact-card .profile-title {
  font-size: 15px;
  color: var(--color-muted);
  font-weight: 400;
}

.contact-card .profile-org {
  font-size: 14px;
  color: var(--color-accent);
  font-weight: 500;
  margin-top: 2px;
}

/* Card divider */
.contact-card .card-divider {
  height: 1px;
  background: var(--color-border);
  margin: 0 24px;
}

/* Contact Detail Rows */
.contact-card .contact-details {
  padding: 8px 0;
}

.contact-card .contact-row {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 24px;
  text-decoration: none;
  color: var(--color-text);
  transition: background var(--transition);
}

.contact-card .contact-row:hover,
.contact-card .contact-row:active {
  background: #f9fafb;
}

.contact-card .contact-row .icon {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg);
  border-radius: 10px;
}

.contact-card .contact-row .icon svg {
  width: 18px;
  height: 18px;
  color: var(--color-muted);
  display: block;
}

.contact-card .contact-row .detail {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.contact-card .contact-row .detail-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-muted);
  font-weight: 600;
}

.contact-card .contact-row .detail-value {
  font-size: 15px;
  color: var(--color-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* QR Code Section */
.contact-card .qr-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 24px 24px 16px;
}

.contact-card .qr-section h3 {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-muted);
  font-weight: 600;
  margin-bottom: 16px;
}

.contact-card #qrcode {
  display: flex;
  justify-content: center;
  align-items: center;
}

.contact-card #qrcode svg {
  border-radius: 8px;
}

/* Hidden canvas for QR PNG export */
.contact-card #qr-canvas {
  display: none;
}

/* Action Buttons */
.contact-card .card-actions {
  display: flex;
  gap: 10px;
  padding: 16px 24px 28px;
}

.contact-card .card-actions .btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  line-height: 1;
  white-space: nowrap;
}

.contact-card .card-actions .btn svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.contact-card .card-actions .btn-primary {
  background: var(--color-accent);
  color: var(--color-white);
  box-shadow: var(--shadow-sm);
}

.contact-card .card-actions .btn-primary:hover {
  background: #1d4ed8;
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
}

.contact-card .card-actions .btn-secondary {
  background: var(--color-bg);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.contact-card .card-actions .btn-secondary:hover {
  background: #ededf0;
  transform: translateY(-1px);
}

/* Contact card responsive */
@media (min-width: 480px) {
  body.contact-page {
    padding-top: 48px;
  }

  .contact-card .profile-photo {
    width: 120px;
    height: 120px;
  }
}