/* styles.css - Personal Portfolio Site for karykellogg.com */

/* ===== CSS Custom Properties ===== */
:root {
  /* Colors */
  --color-primary: #1a2b4a;
  --color-primary-light: #2c4270;
  --color-accent: #3a7bd5;
  --color-accent-hover: #2a5faa;
  --color-bg: #ffffff;
  --color-bg-alt: #f5f7fa;
  --color-text: #2d3748;
  --color-text-light: #5a6778;
  --color-border: #e2e8f0;

  /* Typography */
  --font-family: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-size-base: 1rem;
  --font-size-sm: 0.875rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2rem;
  --font-size-3xl: 2.5rem;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-bold: 700;
  --line-height-base: 1.6;

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

  /* Layout */
  --max-width: 1500px;
  --content-max-width: 1400px;
  --header-height: 64px;
  --z-header: 1000;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-base);
  color: var(--color-text);
  background-color: var(--color-bg);
}

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

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

h1, h2, h3, h4 {
  color: var(--color-primary);
  line-height: 1.3;
}

/* ===== Skip Link ===== */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--spacing-md);
  z-index: 2000;
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: var(--color-accent);
  color: #ffffff;
  font-weight: var(--font-weight-bold);
  border-radius: 0 0 4px 4px;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 0;
  color: #ffffff;
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  padding: 0 var(--spacing-lg);
  background-color: var(--color-primary);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
}

.site-logo {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-bg);
  letter-spacing: 0.02em;
}

.site-logo:hover {
  color: var(--color-bg);
  opacity: 0.9;
}

.nav-link {
  color: rgba(255, 255, 255, 0.85);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: 4px;
  transition: color 0.2s ease, background-color 0.2s ease;
}

.nav-link:hover,
.nav-link:focus {
  color: #ffffff;
  background-color: var(--color-primary-light);
}

/* ===== Hamburger Menu ===== */
.nav-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  padding: 0;
  background: none;
  border: none;
  cursor: pointer;
  position: relative;
  z-index: 1;
}

.nav-toggle-icon,
.nav-toggle-icon::before,
.nav-toggle-icon::after {
  display: block;
  width: 24px;
  height: 2px;
  background-color: #ffffff;
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.nav-toggle-icon {
  position: relative;
}

.nav-toggle-icon::before,
.nav-toggle-icon::after {
  content: '';
  position: absolute;
  left: 0;
}

.nav-toggle-icon::before {
  top: -7px;
}

.nav-toggle-icon::after {
  top: 7px;
}

/* Animate to X when open */
.nav-open .nav-toggle-icon {
  background-color: transparent;
}

.nav-open .nav-toggle-icon::before {
  top: 0;
  transform: rotate(45deg);
}

.nav-open .nav-toggle-icon::after {
  top: 0;
  transform: rotate(-45deg);
}

/* Mobile-first: nav hidden by default, shown when .nav-open */
.site-nav {
  display: none;
  position: absolute;
  top: var(--header-height);
  left: 0;
  right: 0;
  flex-direction: column;
  gap: 0;
  background-color: var(--color-primary);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.nav-open .site-nav {
  display: flex;
}

.site-nav .nav-link {
  padding: var(--spacing-md) var(--spacing-lg);
  border-top: 1px solid var(--color-primary-light);
  border-radius: 0;
  font-size: var(--font-size-base);
}

/* Desktop: hide hamburger, show inline nav */
@media (min-width: 768px) {
  .nav-toggle {
    display: none;
  }

  .site-nav {
    display: flex;
    position: static;
    flex-direction: row;
    gap: var(--spacing-lg);
    align-items: center;
    background-color: transparent;
    box-shadow: none;
  }

  .site-nav .nav-link {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-top: none;
    border-radius: 4px;
    font-size: var(--font-size-sm);
  }
}

/* ===== Main Content ===== */
main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--spacing-sm) var(--spacing-md);
}

section {
  padding: var(--spacing-lg) 0;
}

section:first-child {
  padding-top: var(--spacing-md);
}

/* Consistent section headings across all sections */
section h2 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-sm);
  border-bottom: 2px solid var(--color-border);
}

/* ===== Resume Section ===== */

/* Resume header with download button */
.resume-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-sm);
  border-bottom: 2px solid var(--color-border);
}

.resume-header h2 {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.download-pdf-btn {
  padding: var(--spacing-xs) var(--spacing-md);
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-accent);
  background: none;
  border: 1px solid var(--color-accent);
  border-radius: 4px;
  cursor: pointer;
  white-space: nowrap;
  transition: color 0.2s ease, background-color 0.2s ease;
}

.download-pdf-btn:hover,
.download-pdf-btn:focus {
  color: #ffffff;
  background-color: var(--color-accent);
  outline: none;
}

.pdf-contact-info {
  text-align: center;
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  margin-bottom: var(--spacing-lg);
}

/* Subsection wrappers */
.resume-objective,
.resume-experience,
.resume-education {
  margin-bottom: var(--spacing-2xl);
}

.resume-education {
  margin-bottom: 0;
}

/* Mobile-first base: subsection headings */
.resume-objective > h3,
.resume-experience > h3,
.resume-education > h3 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
}

/* Objective paragraph */
.resume-objective p {
  font-size: var(--font-size-base);
  color: var(--color-text);
}

/* Mobile-first base: experience entries */
.experience-entry {
  padding: var(--spacing-md) 0 var(--spacing-md) var(--spacing-md);
  margin-bottom: var(--spacing-lg);
  border-left: 3px dashed var(--color-border);
}

.experience-entry .job-title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
}

.experience-entry .company-info {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-light);
  margin-bottom: var(--spacing-sm);
}

.experience-entry .accomplishments {
  list-style: disc;
  padding-left: var(--spacing-md);
}

.experience-entry .accomplishments li {
  font-size: var(--font-size-sm);
  color: var(--color-text);
  margin-bottom: var(--spacing-xs);
  line-height: var(--line-height-base);
}

/* Mobile-first base: education entries */
.education-entry {
  padding: var(--spacing-md) 0 var(--spacing-md) var(--spacing-md);
  margin-bottom: var(--spacing-lg);
  border-left: 3px dashed var(--color-border);
}

.education-entry h3 {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
}

.education-entry p {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
}

/* Resume: scale up at 768px */
@media (min-width: 768px) {
  .resume-objective > h3,
  .resume-experience > h3,
  .resume-education > h3 {
    font-size: var(--font-size-xl);
  }

  .experience-entry,
  .education-entry {
    padding-left: var(--spacing-lg);
  }

  .experience-entry .job-title,
  .education-entry h3 {
    font-size: var(--font-size-lg);
  }

  .experience-entry .accomplishments {
    padding-left: var(--spacing-lg);
  }

  .experience-entry .accomplishments li {
    font-size: var(--font-size-base);
  }
}

/* ===== App Showcase Section ===== */
.showcase-intro {
  margin-bottom: var(--spacing-xl);
}

.showcase-title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-xs);
}

.showcase-tagline {
  font-size: var(--font-size-lg);
  color: var(--color-text-light);
  margin-bottom: var(--spacing-lg);
}

.showcase-what {
  font-size: var(--font-size-base);
  color: var(--color-text);
  margin-bottom: var(--spacing-xl);
  line-height: var(--line-height-base);
}

.showcase-stack {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.stack-card {
  background-color: var(--color-bg-alt);
  border-radius: 8px;
  padding: var(--spacing-lg);
  border-left: 3px solid var(--color-accent);
}

.stack-card h4 {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.stack-card ul {
  list-style: disc;
  padding-left: var(--spacing-lg);
}

.stack-card li {
  font-size: var(--font-size-sm);
  color: var(--color-text);
  margin-bottom: var(--spacing-xs);
  line-height: var(--line-height-base);
}

.showcase-highlights {
  font-size: var(--font-size-base);
  color: var(--color-text);
  line-height: var(--line-height-base);
}

@media (min-width: 768px) {
  .showcase-stack {
    grid-template-columns: 1fr 1fr;
  }
}

/* ===== Carousel ===== */
.carousel {
  position: relative;
  max-width: 900px;
  margin: 0 auto var(--spacing-xl);
}

.carousel-track-container {
  overflow: hidden;
  border-radius: 12px;
  background-color: var(--color-bg-alt);
}

.carousel-track {
  display: flex;
  transition: transform 0.4s ease;
}

.carousel-slide {
  min-width: 100%;
  flex-shrink: 0;
  padding: 0 var(--spacing-xs);
}

.carousel-slide img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: contain;
  max-height: 500px;
  margin: 0 auto;
}

.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(0, 0, 0, 0.4);
  color: #ffffff;
  border: none;
  border-radius: 50%;
  font-size: 1.5rem;
  cursor: pointer;
  z-index: 2;
  transition: background-color 0.2s ease;
}

.carousel-btn:hover,
.carousel-btn:focus {
  background-color: rgba(0, 0, 0, 0.7);
  outline: none;
}

.carousel-prev {
  left: -20px;
}

.carousel-next {
  right: -20px;
}

.carousel-dots {
  display: flex;
  justify-content: center;
  gap: 6px;
  margin-top: var(--spacing-md);
}

.carousel-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: none;
  background-color: var(--color-border);
  cursor: pointer;
  padding: 0;
  transition: background-color 0.2s ease;
}

.carousel-dot.active {
  background-color: var(--color-accent);
}

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

@media (min-width: 768px) {
  .carousel-slide {
    min-width: 33.3333%;
    padding: 0 var(--spacing-sm);
  }

  .carousel-prev {
    left: -24px;
  }

  .carousel-next {
    right: -24px;
  }
}

/* Embedded Video */
.showcase-video {
  display: block;
  width: 100%;
  max-width: 720px;
  margin-top: var(--spacing-xl);
  border-radius: 8px;
  background-color: var(--color-bg-alt);
}

/* ===== Lightbox ===== */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(0, 0, 0, 0.85);
}

.lightbox[hidden] {
  display: none;
}

.lightbox-close {
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: 2px solid rgba(255, 255, 255, 0.6);
  border-radius: 50%;
  color: #ffffff;
  font-size: 1.5rem;
  cursor: pointer;
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.lightbox-close:hover,
.lightbox-close:focus {
  background-color: rgba(255, 255, 255, 0.15);
  border-color: #ffffff;
  outline: none;
}

.lightbox-img {
  max-width: 90vw;
  max-height: 85vh;
  object-fit: contain;
  border-radius: 4px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
}

.lightbox-prev,
.lightbox-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(255, 255, 255, 0.2);
  border: 2px solid rgba(255, 255, 255, 0.6);
  border-radius: 50%;
  color: #ffffff;
  font-size: 1.8rem;
  cursor: pointer;
  z-index: 2001;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.lightbox-prev {
  left: var(--spacing-sm);
}

.lightbox-next {
  right: var(--spacing-sm);
}

.lightbox-prev:hover,
.lightbox-prev:focus,
.lightbox-next:hover,
.lightbox-next:focus {
  background-color: rgba(255, 255, 255, 0.25);
  border-color: #ffffff;
  outline: none;
}

@media (min-width: 768px) {
  .lightbox-prev {
    left: var(--spacing-lg);
  }

  .lightbox-next {
    right: var(--spacing-lg);
  }

  .lightbox-prev,
  .lightbox-next {
    width: 48px;
    height: 48px;
    font-size: 2rem;
  }
}

/* Body scroll lock when lightbox is open */
body.lightbox-open {
  overflow: hidden;
}

/* ===== Footer ===== */
footer {
  padding: var(--spacing-2xl) var(--spacing-lg);
  background-color: var(--color-primary);
  color: rgba(255, 255, 255, 0.85);
  margin-top: var(--spacing-2xl);
}

footer h2 {
  color: #ffffff;
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-lg);
}

.footer-content {
  max-width: var(--max-width);
  margin: 0 auto;
}

.footer-contact {
  margin-bottom: var(--spacing-lg);
}

.footer-contact p {
  margin-bottom: var(--spacing-sm);
}

.footer-contact a {
  color: rgba(255, 255, 255, 0.85);
  transition: color 0.2s ease;
}

.footer-contact a:hover {
  color: #ffffff;
}

.footer-social {
  display: flex;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.social-link {
  color: rgba(255, 255, 255, 0.85);
  font-weight: var(--font-weight-medium);
  padding: var(--spacing-xs) var(--spacing-sm);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 4px;
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

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

.footer-copyright {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.6);
}

/* ===== Global Responsive: 768px (Tablet) ===== */
@media (min-width: 768px) {
  main {
    padding: var(--spacing-2xl) var(--spacing-lg);
  }

  section {
    padding: var(--spacing-3xl) 0;
  }

  section h2 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-xl);
  }

  footer {
    padding: var(--spacing-2xl) var(--spacing-xl);
  }

  footer h2 {
    font-size: var(--font-size-xl);
  }
}

/* ===== Global Responsive: 1024px (Desktop) ===== */
@media (min-width: 1024px) {
  main {
    padding: var(--spacing-3xl) var(--spacing-xl);
  }

  section h2 {
    font-size: var(--font-size-3xl);
  }

  .site-header {
    padding: 0 var(--spacing-xl);
  }

  footer {
    padding: var(--spacing-3xl) var(--spacing-xl);
  }

  .footer-social {
    gap: var(--spacing-xl);
  }
}

/* ===== Ultra-wide viewport constraint (2560px+) ===== */
@media (min-width: 1440px) {
  main {
    max-width: var(--content-max-width);
  }

  .footer-content {
    max-width: var(--content-max-width);
  }
}

/* ===== Password Gate ===== */
.password-gate {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-primary);
}

.password-gate[hidden] {
  display: none;
}

.password-gate-box {
  background-color: var(--color-bg);
  border-radius: 8px;
  padding: var(--spacing-2xl);
  max-width: 400px;
  width: 90%;
  text-align: center;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.password-gate-box h2 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-sm);
  border-bottom: none;
  padding-bottom: 0;
}

.password-gate-box > p {
  color: var(--color-text-light);
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-lg);
}

.password-form {
  display: flex;
  gap: var(--spacing-sm);
}

.password-input {
  flex: 1;
  padding: var(--spacing-sm) var(--spacing-md);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  border: 2px solid var(--color-border);
  border-radius: 4px;
  outline: none;
  transition: border-color 0.2s ease;
}

.password-input:focus {
  border-color: var(--color-accent);
}

.password-submit {
  padding: var(--spacing-sm) var(--spacing-lg);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  color: #ffffff;
  background-color: var(--color-accent);
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: background-color 0.2s ease;
}

.password-submit:hover {
  background-color: var(--color-accent-hover);
}

.password-error {
  color: #e53e3e;
  font-size: var(--font-size-sm);
  margin-top: var(--spacing-md);
}

.password-error[hidden] {
  display: none;
}

/* Hide site content until authenticated */
body.locked .skip-link,
body.locked .site-header,
body.locked main,
body.locked footer,
body.locked .lightbox {
  display: none;
}

/* ===== Show More/Less Toggle ===== */
.accomplishment-hidden {
  display: none;
}

.show-more-toggle {
  display: inline-block;
  margin-top: var(--spacing-sm);
  padding: 0;
  background: none;
  border: none;
  color: var(--color-accent);
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: color 0.2s ease;
}

.show-more-toggle:hover,
.show-more-toggle:focus {
  color: var(--color-accent-hover);
  text-decoration: underline;
  outline: none;
}