/*
   Joseph Calderon — Portfolio
   Design System: Motion-Driven, Black + Gold Accent
   Fonts: Archivo (headings) + Space Grotesk (body)
   Fonts loaded via <link> tags in HTML <head>
*/

:root {
  /* Color Palette */
  --color-primary: #171717;
  --color-secondary: #404040;
  --color-accent: #D4AF37;
  --color-accent-hover: #c4a030;
  --color-bg: #FAFAFA;
  --color-bg-card: #FFFFFF;
  --color-text: #171717;
  --color-text-muted: #6B6B6B;
  --color-border: #E5E5E5;
  --color-border-hover: #171717;

  /* Typography */
  --font-heading: "Archivo", system-ui, -apple-system, sans-serif;
  --font-body: "Space Grotesk", system-ui, -apple-system, sans-serif;
  --fs-xs: 0.75rem;
  --fs-sm: 0.875rem;
  --fs-base: 1rem;
  --fs-md: 1.125rem;
  --fs-lg: 1.25rem;
  --fs-xl: 1.5rem;
  --fs-2xl: 2rem;
  --fs-3xl: 2.75rem;
  --fs-4xl: 3.5rem;
  --fs-hero: clamp(2.5rem, 6vw, 5rem);

  /* Spacing */
  --sp-xs: 0.5rem;
  --sp-sm: 1rem;
  --sp-md: 1.5rem;
  --sp-lg: 2.5rem;
  --sp-xl: 4rem;
  --sp-2xl: 6rem;

  /* Layout */
  --max-w: 1080px;
  --nav-h: 72px;

  /* Motion */
  --ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --duration-fast: 150ms;
  --duration: 250ms;
  --duration-slow: 400ms;

  /* Z-index scale */
  --z-nav: 50;
  --z-modal: 100;
}

/* ── Reset ────────────────────────────────────────── */

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.65;
  font-size: var(--fs-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

::selection {
  background-color: var(--color-accent);
  color: var(--color-primary);
}

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

ul {
  list-style: none;
}

a {
  color: var(--color-text);
  text-decoration: none;
  transition: color var(--duration) var(--ease), opacity var(--duration) var(--ease);
}

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

/* ── Layout ───────────────────────────────────────── */

.container {
  width: 90%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--sp-sm);
}

main {
  padding-top: var(--sp-xl);
  padding-bottom: var(--sp-2xl);
}

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

/* ── Navigation ───────────────────────────────────── */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-nav);
  height: var(--nav-h);
  background: rgba(250, 250, 250, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
}

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

.brand h1 {
  font-family: var(--font-heading);
  font-size: var(--fs-lg);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1;
  color: var(--color-primary);
}

.brand .role {
  font-size: var(--fs-xs);
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-weight: 600;
  margin-top: 2px;
}

nav {
  display: flex;
  gap: var(--sp-lg);
}

nav a {
  font-family: var(--font-heading);
  font-size: var(--fs-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  position: relative;
  padding-bottom: 2px;
}

nav a::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-accent);
  transition: width var(--duration) var(--ease);
}

nav a:hover,
nav a.active {
  color: var(--color-primary);
}

nav a:hover::after,
nav a.active::after {
  width: 100%;
}

/* Nav links alias (projects page uses .nav-links) */
.nav-links { display: flex; gap: var(--sp-lg); }
.nav-links a {
  font-family: var(--font-heading);
  font-size: var(--fs-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  position: relative;
  padding-bottom: 2px;
}
.nav-links a::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-accent);
  transition: width var(--duration) var(--ease);
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--color-primary);
}
.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

/* ── Hero Section ─────────────────────────────────── */

.hero-section {
  padding: calc(var(--nav-h) + var(--sp-2xl)) 0 var(--sp-2xl);
  min-height: 60vh;
  display: flex;
  align-items: flex-end;
}

.hero-section .container {
  width: 90%;
  max-width: var(--max-w);
}

.hero-title {
  font-family: var(--font-heading);
  font-size: var(--fs-hero);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1.05;
  color: var(--color-primary);
  margin-bottom: var(--sp-sm);
  border-bottom: none;
  display: block;
  text-transform: none;
}

.hero-section .role {
  font-family: var(--font-body);
  font-size: var(--fs-lg);
  font-weight: 500;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.hero-section .role::before {
  content: "";
  display: inline-block;
  width: 40px;
  height: 2px;
  background-color: var(--color-accent);
  margin-right: var(--sp-sm);
  vertical-align: middle;
}

/* ── Typography ───────────────────────────────────── */

h2 {
  font-family: var(--font-heading);
  font-size: var(--fs-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  margin-bottom: var(--sp-lg);
  padding-bottom: var(--sp-xs);
  display: inline-block;
  position: relative;
  color: var(--color-primary);
}

h2::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--color-accent);
}

h3 {
  font-family: var(--font-heading);
  font-size: var(--fs-lg);
  font-weight: 700;
  margin-bottom: var(--sp-xs);
  color: var(--color-primary);
}

p {
  margin-bottom: var(--sp-sm);
  color: var(--color-text-muted);
  max-width: 65ch;
  font-size: var(--fs-base);
  line-height: 1.7;
}

strong {
  color: var(--color-primary);
  font-weight: 600;
}

/* ── Sections ─────────────────────────────────────── */

#about p {
  font-size: var(--fs-md);
  line-height: 1.8;
}

/* ── Project Cards ────────────────────────────────── */

.project-list {
  display: flex;
  flex-direction: column;
  gap: var(--sp-md);
}

.project-item {
  padding: var(--sp-lg);
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-left: 3px solid transparent;
  transition: all var(--duration) var(--ease);
  cursor: pointer;
  position: relative;
}

.project-item:hover {
  border-left-color: var(--color-accent);
  border-color: var(--color-border-hover);
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.06);
}

.project-item h3 {
  font-size: var(--fs-lg);
  margin-bottom: var(--sp-xs);
}

.project-item p {
  font-size: var(--fs-sm);
  line-height: 1.6;
  margin-bottom: 0;
}

/* ── Buttons ──────────────────────────────────────── */

.button {
  display: inline-block;
  padding: 0.875rem 2rem;
  background-color: var(--color-primary);
  color: var(--color-bg);
  text-decoration: none;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: var(--fs-sm);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border: 2px solid var(--color-primary);
  border-radius: 0;
  margin-top: var(--sp-sm);
  transition: all var(--duration) var(--ease);
  cursor: pointer;
}

.button:hover {
  background-color: transparent;
  color: var(--color-primary);
}

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

.button--accent:hover {
  background-color: transparent;
  color: var(--color-accent);
}

/* ── Modal ────────────────────────────────────────── */

.modal {
  display: none;
  position: fixed;
  z-index: var(--z-modal);
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  overflow: auto;
  background-color: rgba(23, 23, 23, 0.6);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.modal-content {
  background-color: var(--color-bg-card);
  margin: 8% auto;
  padding: var(--sp-xl);
  border: 1px solid var(--color-border);
  border-top: 3px solid var(--color-accent);
  width: 90%;
  max-width: 700px;
  position: relative;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.15);
}

.close-button {
  color: var(--color-text-muted);
  position: absolute;
  top: var(--sp-sm);
  right: var(--sp-md);
  font-size: 1.75rem;
  font-weight: bold;
  cursor: pointer;
  line-height: 1;
  transition: color var(--duration) var(--ease);
}

.close-button:hover {
  color: var(--color-primary);
}

#modal-title {
  font-family: var(--font-heading);
  font-size: var(--fs-2xl);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: var(--sp-md);
  border-bottom: none;
  text-transform: none;
}

#modal-title::after {
  display: none;
}

#modal-description {
  line-height: 1.8;
  color: var(--color-text-muted);
  font-size: var(--fs-md);
}

/* ── Contact Section ──────────────────────────────── */

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

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--sp-xl);
  align-items: start;
}

/* Socials Column */
.contact-socials {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.contact-socials a {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  text-decoration: none;
  padding: 1rem 0;
  border-bottom: 1px solid var(--color-border);
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  transition: all var(--duration) var(--ease);
}

.contact-socials a:first-child {
  border-top: 1px solid var(--color-border);
}

.contact-socials a:hover {
  color: var(--color-accent);
  padding-left: 0.75rem;
}

.contact-socials svg {
  flex-shrink: 0;
  color: var(--color-primary);
  transition: color var(--duration) var(--ease);
}

.contact-socials a:hover svg {
  color: var(--color-accent);
}

/* Contact Form */
.contact-form {
  border: 1px solid var(--color-border);
  padding: var(--sp-lg);
  background-color: var(--color-bg-card);
}

.contact-form h3 {
  font-family: var(--font-heading);
  font-size: var(--fs-sm);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--sp-lg);
  font-weight: 700;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 0.75rem 0;
  margin-bottom: var(--sp-sm);
  border: none;
  border-bottom: 1px solid var(--color-border);
  background: transparent;
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  color: var(--color-text);
  outline: none;
  transition: border-color var(--duration) var(--ease);
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
  color: var(--color-text-muted);
  opacity: 0.5;
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-bottom-color: var(--color-accent);
}

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

.contact-form button.button {
  width: 100%;
  margin-top: var(--sp-sm);
  text-align: center;
}

/* ── Footer ───────────────────────────────────────── */

.site-footer {
  padding: var(--sp-xl) 0;
  text-align: center;
  border-top: 1px solid var(--color-border);
}

.site-footer p {
  margin: 0 auto;
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
}

/* ── Blog / Posts ─────────────────────────────────── */

.section-header {
  margin-bottom: var(--sp-lg);
}

.section-subtitle {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
}

.post-meta {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  margin-bottom: var(--sp-xs);
  display: block;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.post-excerpt {
  margin-top: var(--sp-xs);
  font-size: var(--fs-sm);
}

article.post-content {
  max-width: 700px;
  margin: var(--sp-xl) auto;
}

article.post-content h1 {
  font-family: var(--font-heading);
  font-size: var(--fs-3xl);
  font-weight: 800;
  margin-bottom: var(--sp-sm);
  letter-spacing: -0.03em;
}

article.post-content .post-header-meta {
  margin-bottom: var(--sp-xl);
  border-bottom: 1px solid var(--color-border);
  padding-bottom: var(--sp-sm);
}

article.post-content p {
  margin-bottom: var(--sp-md);
  font-size: var(--fs-md);
  line-height: 1.8;
}

.back-link {
  display: inline-block;
  margin-bottom: var(--sp-md);
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--color-accent);
}

.back-link:hover {
  color: var(--color-primary);
}

.loading-state,
.error-state {
  padding: var(--sp-lg);
  text-align: center;
  color: var(--color-text-muted);
  font-size: var(--fs-sm);
}

/* ── Skills Grid (if used) ────────────────────────── */

.skills-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-md);
}

@media (min-width: 600px) {
  .skills-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.skill-category h3 {
  font-size: var(--fs-base);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--sp-sm);
}

.skill-category ul li {
  padding: var(--sp-xs) 0;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: var(--fs-sm);
}

.skill-category ul li:last-child {
  border-bottom: none;
}

/* ── Scroll Animations ────────────────────────────── */

[data-animate] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

[data-animate].animate-in {
  opacity: 1;
  transform: translateY(0);
}

[data-animate="fade"] {
  transform: none;
}

[data-animate="fade"].animate-in {
  opacity: 1;
}

/* Stagger children */
[data-animate-stagger] > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s var(--ease), transform 0.5s var(--ease);
}

[data-animate-stagger].animate-in > *:nth-child(1) { transition-delay: 0ms; }
[data-animate-stagger].animate-in > *:nth-child(2) { transition-delay: 100ms; }
[data-animate-stagger].animate-in > *:nth-child(3) { transition-delay: 200ms; }
[data-animate-stagger].animate-in > *:nth-child(4) { transition-delay: 300ms; }
[data-animate-stagger].animate-in > *:nth-child(5) { transition-delay: 400ms; }

[data-animate-stagger].animate-in > * {
  opacity: 1;
  transform: translateY(0);
}

/* ── Reduced Motion ───────────────────────────────── */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
  [data-animate] {
    opacity: 1;
    transform: none;
  }
  [data-animate-stagger] > * {
    opacity: 1;
    transform: none;
  }
}

/* ── Responsive ───────────────────────────────────── */

@media (max-width: 768px) {
  .hero-section {
    padding: calc(var(--nav-h) + var(--sp-xl)) 0 var(--sp-xl);
    min-height: 45vh;
  }

  .hero-title {
    font-size: clamp(2rem, 8vw, 3rem);
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: var(--sp-lg);
  }

  nav, .nav-links {
    gap: var(--sp-md);
  }

  section {
    margin-bottom: var(--sp-xl);
  }
}

@media (max-width: 480px) {
  .site-nav {
    flex-direction: column;
    gap: var(--sp-sm);
    text-align: center;
  }

  nav, .nav-links {
    gap: var(--sp-sm);
  }

  .hero-section .role::before {
    display: none;
  }

  .button {
    width: 100%;
    text-align: center;
  }
}
