/* ==========================================================================
   CSS Variables & Base Styles (Mobile First)
   ========================================================================== */

:root {
  --text: #111;
  --muted: #555;
  --bg: #fff;
  --max-width: 680px;
  --breakpoint-mobile: 768px;
  --breakpoint-tablet: 768px;
}

/* ==========================================================================
   Base Styles
   ========================================================================== */

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Ubuntu', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}

main {
  max-width: var(--max-width);
  padding: 1.5rem 1rem;
  margin: 0 auto;
}

/* ==========================================================================
   Header & Navigation (Mobile First)
   ========================================================================== */

header {
  margin-bottom: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid #e0e0e0;
  position: relative;
}

/* Hamburger button positioning - mobile only */
@media (max-width: 767px) {
  header nav {
    position: absolute;
    top: 0;
    right: 0;
  }
}

header h1 {
  margin-top: 0;
  margin-bottom: 0.25rem;
}

.header-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.header-text {
  flex: 1;
  width: 100%;
}

.location {
  margin-top: 0.5rem;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.location-icon {
  width: 14px;
  height: 14px;
  opacity: 0.7;
  vertical-align: middle;
}

.texas-icon {
  width: 14px;
  height: auto;
  opacity: 0.7;
  vertical-align: middle;
  margin: 0 0.25rem;
}

.usa-flag-icon {
  width: 18px;
  height: auto;
  vertical-align: middle;
  margin-left: 0.25rem;
}

.profile-picture {
  width: 120px;
  height: 120px;
  border-radius: 0;
  object-fit: contain;
  object-position: center center;
  flex-shrink: 0;
  background: #f5f5f5;
}

/* Navigation - Mobile First (Hamburger Menu) */
nav {
  position: relative;
}

.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: space-around;
  width: 30px;
  height: 30px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 1001;
  position: relative;
}

.nav-toggle span {
  width: 100%;
  height: 3px;
  background: var(--text);
  border-radius: 2px;
  transition: all 0.3s ease;
  transform-origin: center;
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(8px, 8px);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(8px, -8px);
}

.nav-menu {
  position: fixed;
  top: 0;
  right: -100%;
  width: 280px;
  height: 100vh;
  background: var(--bg);
  box-shadow: -2px 0 10px rgba(0, 0, 0, 0.1);
  transition: right 0.3s ease;
  z-index: 1000;
  padding: 4rem 2rem 2rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.nav-menu.active {
  right: 0;
}

.nav-menu a,
.nav-menu .popover-btn {
  display: block;
  text-decoration: none;
  color: var(--text);
  font-weight: 500;
  padding: 0.75rem 0;
  border-bottom: 1px solid #e0e0e0;
  font-size: 1rem;
  white-space: normal;
}

.nav-menu a:last-child,
.nav-menu .popover-btn:last-child {
  border-bottom: none;
}

.nav-menu a:hover,
.nav-menu .popover-btn:hover {
  text-decoration: underline;
  color: var(--text);
}

.nav-menu .popover-btn {
  background: none;
  border: none;
  padding: 0.75rem 0;
  font-family: inherit;
  font-size: 1rem;
  cursor: pointer;
  text-align: left;
  width: 100%;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-menu .popover-btn:focus {
  outline: 2px solid var(--text);
  outline-offset: 2px;
  border-radius: 2px;
}

/* Overlay backdrop */
body.nav-open::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 999;
  opacity: 1;
  transition: opacity 0.3s ease;
}

body.nav-open {
  overflow: hidden;
}

#contact-popover {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 0.5rem;
  min-width: 200px;
  z-index: 1002;
}

/* Contact popover in mobile menu */
.nav-menu.active #contact-popover {
  position: static;
  margin-top: 1rem;
  min-width: auto;
  width: 100%;
}

/* Tablet and up - Header adjustments */
@media (min-width: 768px) {
  .header-content {
    flex-direction: row;
    align-items: flex-start;
    text-align: left;
  }
  
  .location {
    justify-content: flex-start;
    font-size: 1rem;
  }
  
  .location-icon,
  .texas-icon {
    width: 16px;
  }
  
  .usa-flag-icon {
    width: 20px;
  }
  
  .profile-picture {
    width: 160px;
    height: 160px;
  }
  
  /* Reset nav positioning for desktop */
  header nav {
    position: static;
  }
  
  /* Hide hamburger, show horizontal nav */
  .nav-toggle {
    display: none;
  }
  
  .nav-menu {
    position: static;
    width: auto;
    height: auto;
    background: transparent;
    box-shadow: none;
    padding: 0;
    overflow: visible;
    flex-direction: row;
    gap: 0;
    right: auto;
  }
  
  .nav-menu a,
  .nav-menu .popover-btn {
    display: inline-block;
    margin-right: 1rem;
    padding: 0;
    border-bottom: none;
    font-size: 1rem;
    white-space: nowrap;
  }
  
  .nav-menu a:last-child,
  .nav-menu .popover-btn:last-child {
    margin-right: 0;
  }
  
  .nav-menu .popover-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
  }
  
  body.nav-open::before {
    display: none;
  }
  
  body.nav-open {
    overflow: auto;
  }
  
  /* Contact popover positioning for desktop/tablet */
  #contact-popover {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 0.5rem;
    min-width: 200px;
  }
}

/* ==========================================================================
   Content Sections
   ========================================================================== */

.content-separator {
  display: none;
}

.main-content {
  margin-top: 2rem;
}

section {
  margin-top: 2.5rem;
}

section a {
  color: var(--text);
  text-decoration: underline;
}

section a:hover {
  text-decoration: none;
}

h3 {
  margin-top: 1.5rem;
  margin-bottom: 1rem;
}

ul {
  padding-left: 1.25rem;
}

blockquote {
  margin: 1.5rem 0;
  padding-left: 1.25rem;
  border-left: 3px solid var(--muted);
  color: var(--muted);
  font-style: italic;
}

.coming-soon-link {
  color: var(--muted);
  text-decoration: none;
  font-style: italic;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.coming-soon-link:hover {
  color: var(--text);
  text-decoration: underline;
}

.coming-soon-link i {
  opacity: 0.7;
}

#disclaimers {
  margin-top: 3rem;
  font-size: 0.85rem;
  color: var(--muted);
}

#disclaimers h2 {
  font-size: 1rem;
  margin-bottom: 1rem;
}

#disclaimers p {
  margin-bottom: 0.75rem;
}

footer {
  margin-top: 2rem;
  font-size: 0.9rem;
  color: var(--muted);
}

@media (min-width: 768px) {
  main {
    padding: 2rem 1.25rem;
  }
  
  section {
    margin-top: 3rem;
  }
  
  h3 {
    margin-top: 2rem;
  }
}

/* ==========================================================================
   Popover Component (Material Design Style)
   ========================================================================== */

.popover-btn {
  background: none;
  border: none;
  color: #1976d2;
  text-decoration: none;
  font-family: inherit;
  font-size: inherit;
  cursor: pointer;
  padding: 0;
  font-weight: 500;
  position: relative;
  transition: color 0.2s ease;
}

.popover-btn:hover {
  color: #1565c0;
  text-decoration: underline;
}

.popover-btn:focus {
  outline: 2px solid #1976d2;
  outline-offset: 2px;
  border-radius: 2px;
}

.popover {
  margin-top: 1rem;
  padding: 0;
  background: #ffffff;
  border-radius: 4px;
  box-shadow: 0px 2px 1px -1px rgba(0, 0, 0, 0.2),
              0px 1px 1px 0px rgba(0, 0, 0, 0.14),
              0px 1px 3px 0px rgba(0, 0, 0, 0.12);
  overflow: hidden;
  opacity: 0;
  transform: translateY(-10px);
  transition: opacity 0.2s cubic-bezier(0.4, 0, 0.2, 1), 
              transform 0.2s cubic-bezier(0.4, 0, 0.2, 1),
              visibility 0s linear 0.2s;
  max-width: 100%;
  visibility: hidden;
  position: absolute;
  z-index: 1000;
}

.popover:not(.hidden) {
  opacity: 1;
  transform: translateY(0);
  visibility: visible;
  transition: opacity 0.2s cubic-bezier(0.4, 0, 0.2, 1), 
              transform 0.2s cubic-bezier(0.4, 0, 0.2, 1),
              visibility 0s linear 0s;
}

.popover.hidden {
  display: block;
  opacity: 0;
  transform: translateY(-10px);
  visibility: hidden;
}

.popover-content {
  padding: 20px;
}

.popover h3 {
  margin: 0 0 12px 0;
  font-size: 1.1rem;
  font-weight: 500;
  line-height: 1.4;
  color: rgba(0, 0, 0, 0.87);
}

.popover p {
  margin: 0 0 12px 0;
  color: rgba(0, 0, 0, 0.6);
  line-height: 1.5;
}

.popover p:last-of-type {
  margin-bottom: 0;
}

.popover a {
  color: #1976d2;
  text-decoration: underline;
  transition: color 0.2s ease;
}

.popover a:hover {
  color: #1565c0;
  text-decoration: none;
}

.popover-content a {
  display: inline-block;
  margin: 0.5rem 0;
  color: #1976d2;
  text-decoration: none;
}

.popover-content a:hover {
  text-decoration: underline;
}

.popover-content a i {
  margin-right: 0.5rem;
}

.popover-close {
  margin-top: 12px;
  background: transparent;
  border: none;
  color: #1976d2;
  padding: 8px 16px;
  border-radius: 4px;
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.0892857143em;
  transition: background-color 0.2s ease, color 0.2s ease;
  position: relative;
  overflow: hidden;
}

.popover-close:hover {
  background-color: rgba(25, 118, 210, 0.08);
}

.popover-close:focus {
  outline: 2px solid #1976d2;
  outline-offset: 2px;
}

.popover-close:active {
  background-color: rgba(25, 118, 210, 0.16);
}

@media (min-width: 768px) {
  .popover-content {
    padding: 24px;
  }
  
  .popover h3 {
    margin: 0 0 16px 0;
    font-size: 1.25rem;
  }
  
  .popover p {
    margin: 0 0 16px 0;
  }
  
  .popover-close {
    margin-top: 16px;
  }
}

/* ==========================================================================
   Podcast Styles (Mobile First)
   ========================================================================== */

.podcast-list {
  margin-top: 2rem;
}

.podcast-item {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid #e0e0e0;
}

.podcast-item:last-child {
  border-bottom: none;
}

.podcast-header {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: flex-start;
}

.podcast-banner {
  width: 100px;
  height: 100px;
  object-fit: cover;
  border-radius: 8px;
  flex-shrink: 0;
  border: 1px solid #e0e0e0;
}

.podcast-info {
  flex: 1;
  width: 100%;
}

.podcast-item h3 {
  margin: 0 0 0.75rem 0;
  font-size: 1rem;
  font-weight: 500;
}

.podcast-note {
  margin: 0.5rem 0 0.75rem 0;
  font-size: 0.85rem;
  color: var(--muted);
  font-style: italic;
  line-height: 1.5;
}

.podcast-note a {
  color: var(--text);
  text-decoration: underline;
  font-style: normal;
}

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

.podcast-links {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.podcast-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text);
  text-decoration: none;
  padding: 0.5rem 1rem;
  border: 1px solid var(--muted);
  border-radius: 4px;
  transition: background-color 0.2s ease, border-color 0.2s ease;
  font-size: 0.9rem;
}

.podcast-link:hover {
  background-color: #f5f5f5;
  border-color: var(--text);
  text-decoration: none;
}

.podcast-link i {
  font-size: 0.9rem;
}

@media (min-width: 768px) {
  .podcast-header {
    flex-direction: row;
    gap: 1.5rem;
  }
  
  .podcast-banner {
    width: 120px;
    height: 120px;
  }
  
  .podcast-item h3 {
    font-size: 1.1rem;
  }
  
  .podcast-note {
    font-size: 0.9rem;
  }
  
  .podcast-links {
    gap: 1rem;
  }
  
  .podcast-link {
    font-size: 1rem;
  }
  
  .podcast-link i {
    font-size: 1rem;
  }
}

/* ==========================================================================
   Timeline Styles (Mobile First)
   ========================================================================== */

.timeline-container {
  position: relative;
  margin-top: 2rem;
  padding-left: 1.5rem;
}

.timeline-line {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, #000 0%, #333 25%, #666 50%, #999 75%, #bbb 100%);
}

.timeline-items {
  position: relative;
}

.timeline-item {
  position: relative;
  margin-bottom: 2.5rem;
  padding-left: 2rem;
  opacity: 1;
  transition: opacity 0.3s ease, color 0.3s ease;
}

/* Fade effect - newer entries are darker, older entries are lighter */
.timeline-item[data-year="2026"] {
  opacity: 1;
  color: #000;
}

.timeline-item[data-year="2025"] {
  opacity: 0.85;
  color: #222;
}

.timeline-item[data-year="2024"] {
  opacity: 0.7;
  color: #444;
}

.timeline-item[data-year="2023"] {
  opacity: 0.55;
  color: #666;
}

.timeline-item[data-year="2022"] {
  opacity: 0.4;
  color: #888;
}

.timeline-item[data-year="2021"] {
  opacity: 0.3;
  color: #aaa;
}

.timeline-item[data-year="2020"],
.timeline-item[data-year="2019"],
.timeline-item[data-year="2018"],
.timeline-item[data-year="2017"],
.timeline-item[data-year="2016"] {
  opacity: 0.2;
  color: #bbb;
}

.timeline-marker {
  position: absolute;
  left: -1rem;
  top: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  z-index: 2;
}

.timeline-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #000;
  border: 2px solid #fff;
  box-shadow: 0 0 0 2px #000;
  flex-shrink: 0;
}

.timeline-item[data-year="2026"] .timeline-dot {
  background: #000;
  box-shadow: 0 0 0 2px #000;
}

.timeline-item[data-year="2025"] .timeline-dot {
  background: #222;
  box-shadow: 0 0 0 2px #222;
}

.timeline-item[data-year="2024"] .timeline-dot {
  background: #444;
  box-shadow: 0 0 0 2px #444;
}

.timeline-item[data-year="2023"] .timeline-dot {
  background: #666;
  box-shadow: 0 0 0 2px #666;
}

.timeline-item[data-year="2022"] .timeline-dot {
  background: #888;
  box-shadow: 0 0 0 2px #888;
}

.timeline-item[data-year="2021"] .timeline-dot {
  background: #aaa;
  box-shadow: 0 0 0 2px #aaa;
}

.timeline-item[data-year="2020"] .timeline-dot,
.timeline-item[data-year="2019"] .timeline-dot,
.timeline-item[data-year="2018"] .timeline-dot,
.timeline-item[data-year="2017"] .timeline-dot,
.timeline-item[data-year="2016"] .timeline-dot {
  background: #bbb;
  box-shadow: 0 0 0 2px #bbb;
}

.timeline-month {
  font-size: 0.7rem;
  color: var(--muted);
  margin-top: 0.25rem;
  white-space: nowrap;
  font-weight: 500;
}

.timeline-year-marker {
  position: relative;
  left: -1.5rem;
  margin-bottom: 1rem;
  margin-top: 2rem;
  font-size: 1.1rem;
  font-weight: 700;
  color: #000;
  z-index: 3;
  background: var(--bg);
  padding: 0.25rem 0.5rem;
  display: inline-block;
}

.timeline-year-marker:first-child {
  margin-top: 0;
}

.timeline-content {
  padding-bottom: 1rem;
}

.timeline-content h3 {
  margin: 0 0 0.5rem 0;
  font-size: 1rem;
  font-weight: 500;
}

.timeline-content p {
  margin: 0.5rem 0;
  line-height: 1.6;
  font-size: 0.9rem;
}

.timeline-video {
  margin-top: 1rem;
  position: relative;
  padding-bottom: 56.25%; /* 16:9 aspect ratio */
  height: 0;
  overflow: hidden;
  border-radius: 4px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.timeline-video iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

@media (min-width: 768px) {
  .timeline-container {
    padding-left: 2rem;
  }
  
  .timeline-item {
    margin-bottom: 3rem;
    padding-left: 3rem;
  }
  
  .timeline-marker {
    left: -1.5rem;
  }
  
  .timeline-year-marker {
    left: -2rem;
    font-size: 1.25rem;
  }
  
  .timeline-dot {
    width: 12px;
    height: 12px;
  }
  
  .timeline-month {
    font-size: 0.75rem;
  }
  
  .timeline-content h3 {
    font-size: 1.1rem;
  }
  
  .timeline-content p {
    font-size: 1rem;
  }
}