/* ============================================================
   ALLISON (ALLIE) KRIER — Personal Landing Page
   stylesheet.css
   ============================================================ */

/* ----------------------------------------------------------
   1. CSS Custom Properties
   ---------------------------------------------------------- */
:root {
  --color-bg:           #F8F9FA;
  --color-bg-alt:       #E9ECEF;
  --color-navy:         #1B2A4A;
  --color-accent:       #0D6E6E;
  --color-accent-dark:  #0a5656;
  --color-text:         #212529;
  --color-text-muted:   #495057;
  --color-white:        #FFFFFF;
  --color-border:       #CED4DA;

  --font-family:        'Inter', sans-serif;

  --text-base:          1.05rem;
  --text-sm:            0.9rem;
  --line-height:        1.7;

  --max-width:          800px;
  --max-width-narrow:   600px;

  --section-padding:    60px 1.25rem;

  --radius-sm:          4px;
  --radius-pill:        999px;

  --shadow-card:        0 2px 8px rgba(0, 0, 0, 0.07);
  --shadow-card-hover:  0 6px 18px rgba(0, 0, 0, 0.12);

  --transition:         0.2s ease;
}

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

html {
  scroll-behavior: smooth;
}

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

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

ul {
  list-style: none;
}

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

a:hover,
a:focus {
  color: var(--color-accent-dark);
  text-decoration: underline;
}

a:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* ----------------------------------------------------------
   3. Typography
   ---------------------------------------------------------- */
h1, h2, h3 {
  font-family: var(--font-family);
  font-weight: 700;
  line-height: 1.25;
}

h1 {
  font-size: clamp(1.75rem, 5vw, 2.5rem);
}

h2 {
  font-size: 1.5rem;
  color: var(--color-accent);
  margin-bottom: 1.25rem;
}

h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-navy);
  margin-bottom: 0.4rem;
}

p {
  margin-bottom: 1rem;
}

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

/* ----------------------------------------------------------
   4. Layout Helpers
   ---------------------------------------------------------- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.container--narrow {
  max-width: var(--max-width-narrow);
  margin: 0 auto;
}

.section {
  padding: var(--section-padding);
}

.section--alt {
  background-color: var(--color-bg-alt);
}

/* ----------------------------------------------------------
   5. Navigation
   ---------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-navy);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0.875rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.nav-name {
  font-weight: 700;
  font-size: 1rem;
  color: var(--color-white);
  text-decoration: none;
}

.nav-name:hover,
.nav-name:focus {
  color: #8ecece;
  text-decoration: none;
}

.nav-links {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.nav-links a {
  color: #C8D6E5;
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  transition: color var(--transition);
}

.nav-links a:hover,
.nav-links a:focus {
  color: var(--color-white);
  text-decoration: none;
}

/* ----------------------------------------------------------
   6. Hero Section
   ---------------------------------------------------------- */
.section--hero {
  background-color: var(--color-navy);
  color: var(--color-white);
  text-align: center;
  padding: 70px 1.25rem 64px;
}

.hero-photo {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  object-fit: cover;
  object-position: center top;
  margin: 0 auto 1.5rem;
  border: 4px solid var(--color-accent);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.hero-name {
  color: var(--color-white);
  margin-bottom: 0.6rem;
}

.hero-tagline {
  color: #C8D6E5;
  font-size: 1.05rem;
  line-height: 1.6;
  margin-bottom: 0.5rem;
}

.hero-focus {
  color: #8ecece;
  font-size: 0.95rem;
  font-style: italic;
  margin-bottom: 1.75rem;
}

.hero-cta {
  display: flex;
  gap: 0.875rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ----------------------------------------------------------
   7. Buttons
   ---------------------------------------------------------- */
.btn {
  display: inline-block;
  padding: 0.6rem 1.4rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  transition: background-color var(--transition), color var(--transition), border-color var(--transition);
  cursor: pointer;
}

.btn--primary {
  background-color: var(--color-accent);
  color: var(--color-white);
  border: 2px solid var(--color-accent);
}

.btn--primary:hover,
.btn--primary:focus {
  background-color: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
  color: var(--color-white);
  text-decoration: none;
}

.btn--outline {
  background-color: transparent;
  color: var(--color-white);
  border: 2px solid rgba(255, 255, 255, 0.6);
}

.btn--outline:hover,
.btn--outline:focus {
  background-color: rgba(255, 255, 255, 0.12);
  border-color: var(--color-white);
  color: var(--color-white);
  text-decoration: none;
}

/* ----------------------------------------------------------
   8. Skills Section
   ---------------------------------------------------------- */
.skills-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.skills-group h3 {
  margin-bottom: 0.75rem;
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--color-text-muted);
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag {
  display: inline-block;
  padding: 0.3rem 0.85rem;
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  font-weight: 500;
  line-height: 1.4;
}

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

.tag--secondary {
  background-color: var(--color-bg-alt);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.section--alt .tag--secondary {
  background-color: var(--color-bg);
}

/* ----------------------------------------------------------
   9. Projects Section
   ---------------------------------------------------------- */
.projects-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.card {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 1.5rem;
  box-shadow: var(--shadow-card);
  transition: box-shadow var(--transition), transform var(--transition);
}

.card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}

.card-header {
  margin-bottom: 0.75rem;
}

.card-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-accent);
  margin-bottom: 0.35rem;
}

.card h3 {
  font-size: 1.05rem;
  color: var(--color-navy);
}

.card p {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.65;
  margin-bottom: 0;
}

/* Third card spans full width when odd */
.projects-grid .card:nth-child(3) {
  grid-column: 1 / -1;
}

/* ----------------------------------------------------------
   10. Experience Section
   ---------------------------------------------------------- */
.experience-list {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.experience-item {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 1.25rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--color-border);
}

.experience-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.experience-date {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  font-weight: 500;
  padding-top: 0.15rem;
}

.experience-org {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-bottom: 0.75rem;
  font-style: italic;
}

.experience-content ul {
  list-style: disc;
  padding-left: 1.2rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.experience-content ul li {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ----------------------------------------------------------
   11. Contact Section
   ---------------------------------------------------------- */
.contact-intro {
  color: var(--color-text-muted);
  margin-bottom: 1.75rem;
  font-size: 1rem;
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
}

.contact-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.65rem 1.1rem;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-size: 0.95rem;
  font-weight: 500;
  text-decoration: none;
  transition: border-color var(--transition), background-color var(--transition), color var(--transition);
  max-width: fit-content;
}

.contact-badge svg {
  flex-shrink: 0;
  color: var(--color-accent);
}

.contact-badge:hover,
.contact-badge:focus {
  border-color: var(--color-accent);
  background-color: #f0fafa;
  color: var(--color-accent-dark);
  text-decoration: none;
}

/* ----------------------------------------------------------
   12. Footer
   ---------------------------------------------------------- */
.site-footer {
  background-color: var(--color-navy);
  color: #8A9BB5;
  text-align: center;
  padding: 1.25rem;
  font-size: 0.85rem;
}

.site-footer .container {
  padding: 0;
}

/* ----------------------------------------------------------
   13. Responsive — Tablet & Mobile
   ---------------------------------------------------------- */
@media (max-width: 640px) {
  :root {
    --section-padding: 44px 1rem;
  }

  .nav-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }

  .nav-links {
    gap: 1rem;
  }

  .section--hero {
    padding: 48px 1rem 44px;
  }

  .hero-photo {
    width: 160px;
    height: 160px;
  }

  .skills-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .projects-grid {
    grid-template-columns: 1fr;
  }

  .projects-grid .card:nth-child(3) {
    grid-column: auto;
  }

  .experience-item {
    grid-template-columns: 1fr;
    gap: 0.4rem;
  }

  .experience-date {
    color: var(--color-accent);
    font-weight: 600;
  }
}

@media (max-width: 400px) {
  .hero-photo {
    width: 130px;
    height: 130px;
  }

  h2 {
    font-size: 1.25rem;
  }
}