/* ==========================================================================
   Modern Minimalist Portfolio Theme
   Designed for Irvin Aloise - Clear, Professional & Fast
   ========================================================================== */

/* --- CSS Variables & Design Tokens --- */
:root {
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Inter, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;

  /* Light Theme (Default) */
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-card: #ffffff;
  --bg-card-hover: #f8fafc;
  --border-color: #e2e8f0;
  --border-subtle: #f1f5f9;

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --text-inverse: #ffffff;

  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --accent-subtle: #eff6ff;
  --accent-border: #bfdbfe;

  --tag-bg: #f1f5f9;
  --tag-text: #334155;
  --tag-border: #e2e8f0;

  --badge-bg: #eff6ff;
  --badge-text: #1d4ed8;
  --badge-border: #dbeafe;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);

  --nav-bg: rgba(255, 255, 255, 0.85);
  --nav-border: rgba(226, 232, 240, 0.8);
}

/* Dark Theme */
[data-theme="dark"] {
  --bg-primary: #0b0f19;
  --bg-secondary: #111827;
  --bg-card: #151d2f;
  --bg-card-hover: #1a243a;
  --border-color: #1f293d;
  --border-subtle: #162032;

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-inverse: #0b0f19;

  --accent: #3b82f6;
  --accent-hover: #60a5fa;
  --accent-subtle: rgba(59, 130, 246, 0.12);
  --accent-border: rgba(59, 130, 246, 0.25);

  --tag-bg: #1e293b;
  --tag-text: #cbd5e1;
  --tag-border: #334155;

  --badge-bg: rgba(59, 130, 246, 0.15);
  --badge-text: #93c5fd;
  --badge-border: rgba(59, 130, 246, 0.3);

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5);

  --nav-bg: rgba(11, 15, 25, 0.85);
  --nav-border: rgba(31, 41, 61, 0.8);
}

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

html {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  transition: background-color 0.25s ease, color 0.25s ease;
}

/* Links */
a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.15s ease, border-color 0.15s ease;
}

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

p {
  margin-bottom: 1rem;
  color: var(--text-secondary);
}

p:last-child {
  margin-bottom: 0;
}

h1, h2, h3, h4 {
  color: var(--text-primary);
  font-weight: 700;
  line-height: 1.25;
}

/* --- Container & Layout --- */
.container {
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* --- Sticky Top Navigation Bar --- */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--nav-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--nav-border);
  transition: background-color 0.25s ease, border-color 0.25s ease;
}

.site-nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.nav-brand {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.nav-brand:hover {
  color: var(--accent);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 1.1rem;
  list-style: none;
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.15s ease;
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* Theme Toggle Button */
.theme-toggle-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  width: 36px;
  height: 36px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.theme-toggle-btn:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.theme-toggle-btn svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.icon-sun {
  display: none;
}
.icon-moon {
  display: block;
}

[data-theme="dark"] .icon-sun {
  display: block;
}
[data-theme="dark"] .icon-moon {
  display: none;
}

/* --- Hero / Header Section --- */
.hero-section {
  padding: 3.5rem 0 2.5rem 0;
  border-bottom: 1px solid var(--border-subtle);
}

.hero-profile {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 2rem;
}

.avatar-wrapper {
  position: relative;
  flex-shrink: 0;
}

.avatar-img {
  width: 110px;
  height: 110px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}

.hero-content {
  flex-grow: 1;
}

.hero-content h1 {
  font-size: 2rem;
  letter-spacing: -0.025em;
  margin-bottom: 0.35rem;
}

.hero-content .subtitle {
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.hero-content .bio {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1.25rem;
}

/* Social & Contact Badges */
.social-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
}

.social-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.35rem 0.75rem;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 500;
  background-color: var(--bg-secondary);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  transition: all 0.15s ease;
}

.social-btn:hover {
  background-color: var(--accent-subtle);
  color: var(--accent);
  border-color: var(--accent-border);
}

.social-btn svg {
  width: 15px;
  height: 15px;
  flex-shrink: 0;
  fill: currentColor;
}

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

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

/* --- Content Sections --- */
.section {
  padding: 3rem 0;
  border-bottom: 1px solid var(--border-subtle);
}

.section:last-of-type {
  border-bottom: none;
}

.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 1.75rem;
}

.section-title {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.section-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

/* --- Timeline & Experience Cards --- */
.timeline {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 1.4rem 1.5rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.15s ease;
}

.card:hover {
  border-color: var(--accent-border);
  box-shadow: var(--shadow-sm);
}

.card-header {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin-bottom: 0.85rem;
}

@media (min-width: 600px) {
  .card-header {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-start;
  }
}

.card-title-group h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.2rem;
}

.card-subtitle {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--accent);
}

.card-date {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  font-family: var(--font-mono);
  color: var(--text-muted);
  white-space: nowrap;
  padding: 0.2rem 0.55rem;
  background-color: var(--bg-secondary);
  border-radius: 4px;
  border: 1px solid var(--border-color);
}

.card-body p {
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
}

.card-bullets {
  margin: 0.5rem 0 0.85rem 1.2rem;
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.6;
}

.card-bullets li {
  margin-bottom: 0.35rem;
}

/* Tags / Pills */
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.85rem;
}

.tag {
  font-size: 0.78rem;
  font-family: var(--font-mono);
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  background-color: var(--tag-bg);
  color: var(--tag-text);
  border: 1px solid var(--tag-border);
}

/* --- Publication Items --- */
.publication-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.publication-item {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 1.25rem 1.4rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.publication-item:hover {
  border-color: var(--accent-border);
  box-shadow: var(--shadow-sm);
}

.pub-title {
  font-size: 1.02rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.35rem;
  line-height: 1.4;
}

.pub-authors {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-bottom: 0.35rem;
}

.pub-authors strong {
  color: var(--text-primary);
}

.pub-venue {
  font-size: 0.85rem;
  font-style: italic;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.pub-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.action-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.22rem 0.55rem;
  border-radius: 4px;
  background-color: var(--badge-bg);
  color: var(--badge-text);
  border: 1px solid var(--badge-border);
  transition: all 0.15s ease;
}

.action-pill:hover {
  background-color: var(--accent);
  color: #ffffff;
  border-color: var(--accent);
}

.action-pill svg {
  width: 12px;
  height: 12px;
  fill: currentColor;
}

/* --- Teaching Items --- */
.teaching-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.teaching-item {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: 0.9rem 1.1rem;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-size: 0.92rem;
  gap: 1rem;
}

.teaching-role {
  color: var(--text-primary);
  font-weight: 500;
}

.teaching-year {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-muted);
  flex-shrink: 0;
}

/* --- Photography Carousel Section --- */
.carousel-container {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.carousel-container:hover {
  border-color: var(--accent-border);
}

.carousel-viewport {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background-color: #0b0f19;
}

.carousel-track {
  display: flex;
  height: 100%;
  width: 100%;
  transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1);
  will-change: transform;
}

.carousel-slide {
  flex: 0 0 100%;
  width: 100%;
  height: 100%;
  position: relative;
  overflow: hidden;
  background-color: #0b0f19;
}

.carousel-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  user-select: none;
  -webkit-user-drag: none;
  pointer-events: none;
}

/* Arrow Navigation Buttons */
.carousel-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(15, 23, 42, 0.65);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 5;
  transition: all 0.2s ease;
}

.carousel-arrow:hover {
  background: rgba(15, 23, 42, 0.9);
  border-color: rgba(255, 255, 255, 0.5);
  transform: translateY(-50%) scale(1.08);
}

.carousel-arrow svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.carousel-arrow.prev {
  left: 14px;
}

.carousel-arrow.next {
  right: 14px;
}

/* Carousel Footer / Meta Bar */
.carousel-footer {
  padding: 1rem 1.25rem;
  background-color: var(--bg-card);
  border-top: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

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

.caption-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.4;
}

.caption-counter {
  font-size: 0.78rem;
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--text-muted);
  background-color: var(--bg-secondary);
  padding: 0.2rem 0.55rem;
  border-radius: 4px;
  border: 1px solid var(--border-color);
  white-space: nowrap;
}

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

.carousel-dots {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  max-width: 70%;
}

.carousel-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--border-color);
  border: none;
  padding: 0;
  cursor: pointer;
  transition: all 0.25s ease;
}

.carousel-dot:hover {
  background-color: var(--text-muted);
}

.carousel-dot.active {
  background-color: var(--accent);
  width: 20px;
  border-radius: 4px;
}

.caption-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--accent);
  transition: color 0.15s ease;
  white-space: nowrap;
}

.caption-link:hover {
  color: var(--accent-hover);
  text-decoration: underline;
}

.caption-link svg {
  width: 13px;
  height: 13px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* --- Contact Section & Form --- */
.contact-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 1.6rem 1.75rem;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

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

.contact-intro {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

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

.form-honeypot {
  display: none !important;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-primary);
}

.form-input,
.form-textarea {
  font-family: var(--font-sans);
  font-size: 0.95rem;
  line-height: 1.5;
  padding: 0.7rem 0.9rem;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease, background-color 0.2s ease;
}

.form-input:focus,
.form-textarea:focus {
  border-color: var(--accent);
  background-color: var(--bg-card);
  box-shadow: 0 0 0 3px var(--accent-subtle);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

.form-actions {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
  margin-top: 0.35rem;
}

.form-submit-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.35rem;
  border-radius: 8px;
  font-family: var(--font-sans);
  font-size: 0.92rem;
  font-weight: 600;
  background-color: var(--accent);
  color: #ffffff;
  border: 1px solid var(--accent);
  cursor: pointer;
  transition: background-color 0.15s ease, transform 0.1s ease, opacity 0.15s ease;
}

.form-submit-btn:hover {
  background-color: var(--accent-hover);
  border-color: var(--accent-hover);
}

.form-submit-btn:active {
  transform: scale(0.98);
}

.form-submit-btn:disabled {
  opacity: 0.65;
  cursor: not-allowed;
}

.form-submit-btn .btn-icon {
  width: 15px;
  height: 15px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.form-status {
  font-size: 0.88rem;
  font-weight: 500;
  line-height: 1.4;
  transition: all 0.2s ease;
}

.form-status.success {
  color: #16a34a;
}

[data-theme="dark"] .form-status.success {
  color: #4ade80;
}

.form-status.error {
  color: #dc2626;
}

[data-theme="dark"] .form-status.error {
  color: #f87171;
}

/* --- Formspree Declarative Alerts & Validation --- */
[data-fs-success] {
  display: none;
}

[data-fs-success][data-fs-active] {
  display: block;
  padding: 0.85rem 1.1rem;
  border-radius: 8px;
  background-color: rgba(34, 197, 94, 0.12);
  border: 1px solid rgba(34, 197, 94, 0.3);
  color: #16a34a;
  font-size: 0.92rem;
  font-weight: 500;
  margin-bottom: 1.25rem;
}

[data-theme="dark"] [data-fs-success][data-fs-active] {
  background-color: rgba(34, 197, 94, 0.15);
  border-color: rgba(34, 197, 94, 0.35);
  color: #4ade80;
}

[data-fs-error] {
  display: none;
}

[data-fs-error][data-fs-active] {
  display: block;
  font-size: 0.84rem;
  color: #dc2626;
  margin-top: 0.25rem;
}

div[data-fs-error][data-fs-active] {
  padding: 0.85rem 1.1rem;
  border-radius: 8px;
  background-color: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.25);
  margin-bottom: 1.25rem;
}

[data-theme="dark"] [data-fs-error][data-fs-active] {
  color: #f87171;
}

[data-theme="dark"] div[data-fs-error][data-fs-active] {
  background-color: rgba(239, 68, 68, 0.15);
  border-color: rgba(239, 68, 68, 0.3);
}

[data-fs-field][aria-invalid="true"] {
  border-color: #dc2626 !important;
}

[data-theme="dark"] [data-fs-field][aria-invalid="true"] {
  border-color: #f87171 !important;
}

/* --- Footer --- */
.site-footer {
  margin-top: auto;
  padding: 2.5rem 0;
  border-top: 1px solid var(--border-subtle);
  background-color: var(--bg-secondary);
  text-align: center;
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.footer-links {
  display: flex;
  gap: 1.25rem;
  list-style: none;
}

.footer-links a {
  color: var(--text-muted);
  font-size: 0.9rem;
}

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

.footer-copy {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* --- Responsive Adjustments --- */
@media (max-width: 640px) {
  .site-nav .container {
    height: auto;
    padding-top: 0.75rem;
    padding-bottom: 0.75rem;
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  .nav-menu {
    order: 3;
    width: 100%;
    justify-content: space-between;
    gap: 0.5rem;
    padding-top: 0.5rem;
    border-top: 1px solid var(--border-subtle);
    font-size: 0.82rem;
  }

  .hero-profile {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.25rem;
  }

  .avatar-img {
    width: 90px;
    height: 90px;
  }

  .hero-content h1 {
    font-size: 1.65rem;
  }

  .section {
    padding: 2.25rem 0;
  }

  .teaching-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
  }

  .carousel-viewport {
    aspect-ratio: 4 / 3;
  }

  .carousel-arrow {
    width: 34px;
    height: 34px;
  }

  .carousel-arrow.prev {
    left: 8px;
  }

  .carousel-arrow.next {
    right: 8px;
  }

  .carousel-dots {
    max-width: 100%;
  }

  .contact-card {
    padding: 1.25rem;
  }

  .form-actions {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }

  .form-submit-btn {
    width: 100%;
    justify-content: center;
  }
}

/* --- Print Stylesheet --- */
@media print {
  .site-nav,
  .theme-toggle-btn,
  .social-btn.primary,
  .site-footer,
  .carousel-arrow,
  .carousel-dots,
  #photography,
  #contact {
    display: none !important;
  }

  body {
    background-color: #ffffff !important;
    color: #000000 !important;
    font-size: 11pt;
  }

  .card, .publication-item, .contact-card {
    border: 1px solid #ccc !important;
    page-break-inside: avoid;
    box-shadow: none !important;
  }

  a {
    color: #000000 !important;
    text-decoration: underline !important;
  }
}