/* ============================================
   DERRICK DEDMON - Portfolio
   Clean, Modern, Professional
   ============================================ */

/* --- CSS Custom Properties --- */
:root {
  /* Colors */
  --color-bg: #ffffff;
  --color-bg-alt: #f8f9fa;
  --color-text: #1a1a2e;
  --color-text-secondary: #4a5568;
  --color-accent: #2563eb;
  --color-accent-hover: #1d4ed8;
  --color-accent-light: #dbeafe;
  --color-gold: #d4a843;
  --color-gold-light: #fdf6e3;
  --color-border: #e5e7eb;
  --color-white: #ffffff;
  --color-shadow: rgba(0, 0, 0, 0.08);
  --color-shadow-md: rgba(0, 0, 0, 0.12);

  /* Typography */
  --font-heading: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-size-base: 1rem;
  --font-size-sm: 0.875rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;
  --font-size-5xl: 3.5rem;
  --line-height-tight: 1.2;
  --line-height-normal: 1.6;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  --space-5xl: 8rem;

  /* Layout */
  --container-max: 1200px;
  --container-narrow: 800px;
  --nav-height: 72px;
  --border-radius: 8px;
  --border-radius-lg: 12px;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
}

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

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

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

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

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

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

ul, ol {
  list-style: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
  font-size: inherit;
}

/* --- Accessibility --- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  background: var(--color-accent);
  color: var(--color-white);
  border-radius: var(--border-radius);
  z-index: 1000;
  font-weight: 600;
}

.skip-link:focus {
  top: var(--space-md);
  color: var(--color-white);
}

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* --- Layout --- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

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

.section {
  padding: var(--space-5xl) 0;
}

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

.section__header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.section__label {
  display: inline-block;
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
}

.section__title {
  font-family: var(--font-heading);
  font-size: var(--font-size-3xl);
  font-weight: 700;
  line-height: var(--line-height-tight);
  color: var(--color-text);
}

.section__subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  margin-top: var(--space-sm);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: var(--line-height-tight);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 0.75rem 1.75rem;
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  font-weight: 600;
  border-radius: var(--border-radius);
  transition: all var(--transition-base);
  white-space: nowrap;
}

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

.btn--primary:hover {
  background-color: var(--color-accent-hover);
  color: var(--color-white);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

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

.btn--outline:hover {
  background-color: var(--color-accent);
  color: var(--color-white);
  transform: translateY(-1px);
}

.btn--sm {
  padding: 0.5rem 1.25rem;
  font-size: var(--font-size-sm);
}

.btn--nav {
  padding: 0.5rem 1.25rem;
  font-size: var(--font-size-sm);
}

/* ============================================
   NAVIGATION
   ============================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 100;
  transition: all var(--transition-base);
  background-color: transparent;
}

.nav--scrolled {
  background-color: rgba(255, 255, 255, 0.97);
  box-shadow: 0 1px 3px var(--color-shadow);
  backdrop-filter: blur(8px);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav__logo {
  font-family: var(--font-body);
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: 0.02em;
  text-decoration: none;
}

.nav__logo:hover {
  color: var(--color-text);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.nav__link {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-accent);
  transition: width var(--transition-base);
}

.nav__link:hover,
.nav__link--active {
  color: var(--color-accent);
}

.nav__link--active::after,
.nav__link:hover::after {
  width: 100%;
}

.nav__cta {
  margin-left: var(--space-sm);
}

/* Mobile menu button */
.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-sm);
  z-index: 110;
}

.nav__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-text);
  transition: all var(--transition-base);
}

.nav__toggle--open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav__toggle--open span:nth-child(2) {
  opacity: 0;
}

.nav__toggle--open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ============================================
   HERO
   ============================================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #f8f9fa 0%, #eef2ff 50%, #f8f9fa 100%);
}

.hero__bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
  z-index: 0;
}

.hero__bg-shape {
  position: absolute;
  border-radius: 50%;
  opacity: 0.15;
  filter: blur(80px);
}

.hero__bg-shape--1 {
  width: 500px;
  height: 500px;
  background: var(--color-accent);
  top: -10%;
  right: -5%;
}

.hero__bg-shape--2 {
  width: 400px;
  height: 400px;
  background: var(--color-gold);
  bottom: -10%;
  left: -5%;
}

.hero__inner {
  display: flex;
  align-items: center;
  gap: var(--space-4xl);
  position: relative;
  z-index: 1;
  padding-top: var(--nav-height);
}

.hero__content {
  flex: 1;
}

.hero__label {
  display: inline-block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  margin-bottom: var(--space-md);
}

.hero__title {
  font-family: var(--font-heading);
  font-size: var(--font-size-5xl);
  font-weight: 700;
  line-height: 1.1;
  color: var(--color-text);
  margin-bottom: var(--space-lg);
}

.hero__subtitle {
  font-size: var(--font-size-xl);
  color: var(--color-text-secondary);
  line-height: var(--line-height-normal);
  margin-bottom: var(--space-sm);
}

.hero__location {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xl);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.hero__actions {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.hero__photo-wrapper {
  flex-shrink: 0;
}

.hero__photo {
  width: 320px;
  height: 320px;
  border-radius: var(--border-radius-lg);
  object-fit: cover;
  box-shadow: 0 20px 40px var(--color-shadow-md);
  border: 4px solid var(--color-white);
}

/* ============================================
   ABOUT
   ============================================ */
.about__content {
  max-width: 700px;
  margin: 0 auto var(--space-3xl);
  text-align: center;
}

.about__text {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  line-height: 1.8;
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
}

.stat-card {
  text-align: center;
  padding: var(--space-xl);
  background: var(--color-white);
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: 0 2px 8px var(--color-shadow);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px var(--color-shadow-md);
}

.stat-card__number {
  font-family: var(--font-heading);
  font-size: var(--font-size-4xl);
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: var(--space-xs);
}

.stat-card__label {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  font-weight: 500;
}

/* ============================================
   EXPERIENCE TIMELINE
   ============================================ */
.timeline {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-accent), var(--color-gold));
  transform: translateX(-50%);
}

.timeline__item {
  position: relative;
  width: 50%;
  padding: 0 var(--space-2xl) var(--space-2xl);
}

.timeline__item:nth-child(odd) {
  left: 0;
  padding-right: var(--space-3xl);
  text-align: right;
}

.timeline__item:nth-child(even) {
  left: 50%;
  padding-left: var(--space-3xl);
}

.timeline__dot {
  position: absolute;
  top: 8px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background-color: var(--color-gold);
  border: 3px solid var(--color-white);
  box-shadow: 0 0 0 2px var(--color-gold);
  z-index: 1;
}

.timeline__item:nth-child(odd) .timeline__dot {
  right: -8px;
}

.timeline__item:nth-child(even) .timeline__dot {
  left: -8px;
}

.timeline__card {
  background: var(--color-white);
  border-radius: var(--border-radius-lg);
  padding: var(--space-xl);
  border: 1px solid var(--color-border);
  box-shadow: 0 2px 8px var(--color-shadow);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.timeline__card:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--color-shadow-md);
}

.timeline__date {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: var(--space-xs);
}

.timeline__role {
  font-family: var(--font-heading);
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

.timeline__company {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-md);
  font-weight: 500;
}

.timeline__details {
  list-style: none;
}

.timeline__details li {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-xs);
  position: relative;
}

.timeline__item:nth-child(odd) .timeline__details li {
  padding-right: var(--space-md);
}

.timeline__item:nth-child(odd) .timeline__details li::after {
  content: '';
  position: absolute;
  right: 0;
  top: 0.6em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background-color: var(--color-gold);
}

.timeline__item:nth-child(even) .timeline__details li {
  padding-left: var(--space-md);
}

.timeline__item:nth-child(even) .timeline__details li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background-color: var(--color-gold);
}

/* ============================================
   SKILLS
   ============================================ */
.skills__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xl);
}

.skill-category {
  background: var(--color-white);
  border-radius: var(--border-radius-lg);
  padding: var(--space-xl);
  border: 1px solid var(--color-border);
  box-shadow: 0 2px 8px var(--color-shadow);
}

.skill-category__title {
  font-family: var(--font-heading);
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-sm);
  border-bottom: 2px solid var(--color-gold);
  display: inline-block;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.skill-tag {
  display: inline-block;
  padding: 0.35rem 0.85rem;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-accent);
  background-color: var(--color-accent-light);
  border-radius: 100px;
  transition: all var(--transition-fast);
}

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

/* Progress bars */
.skill-bars {
  margin-top: var(--space-lg);
}

.skill-bar {
  margin-bottom: var(--space-md);
}

.skill-bar__header {
  display: flex;
  justify-content: space-between;
  margin-bottom: var(--space-xs);
}

.skill-bar__name {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
}

.skill-bar__value {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.skill-bar__track {
  height: 6px;
  background-color: var(--color-bg-alt);
  border-radius: 100px;
  overflow: hidden;
}

.skill-bar__fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-hover));
  border-radius: 100px;
  width: 0;
  transition: width 1s ease;
}

.skill-bar__fill--animated {
  /* Width set via inline style */
}

/* ============================================
   PORTFOLIO
   ============================================ */
.portfolio__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.portfolio-card {
  position: relative;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  cursor: pointer;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  box-shadow: 0 2px 8px var(--color-shadow);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.portfolio-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px var(--color-shadow-md);
}

.portfolio-card__image {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  display: block;
  transition: transform var(--transition-slow);
}

.portfolio-card:hover .portfolio-card__image {
  transform: scale(1.03);
}

.portfolio-card__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(26, 26, 46, 0.9) 0%, transparent 60%);
  opacity: 0;
  transition: opacity var(--transition-base);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--space-xl);
}

.portfolio-card:hover .portfolio-card__overlay {
  opacity: 1;
}

.portfolio-card__title {
  font-family: var(--font-heading);
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: var(--space-xs);
}

.portfolio-card__tech {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.8);
}

/* Portfolio Modal */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 200;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

.modal-backdrop--visible {
  opacity: 1;
  visibility: visible;
}

.modal {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.95);
  width: 90%;
  max-width: 800px;
  max-height: 85vh;
  background: var(--color-white);
  border-radius: var(--border-radius-lg);
  z-index: 210;
  overflow-y: auto;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

.modal--visible {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, -50%) scale(1);
}

.modal__close {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--color-bg-alt);
  color: var(--color-text);
  font-size: var(--font-size-xl);
  transition: background var(--transition-fast);
  z-index: 1;
}

.modal__close:hover {
  background: var(--color-border);
}

.modal__image {
  width: 100%;
  display: block;
}

.modal__body {
  padding: var(--space-xl);
}

.modal__title {
  font-family: var(--font-heading);
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin-bottom: var(--space-sm);
}

.modal__description {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-lg);
  line-height: 1.7;
}

.modal__tech-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

/* ============================================
   PUBLICATIONS
   ============================================ */
.publications__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.publication {
  background: var(--color-white);
  border-radius: var(--border-radius-lg);
  padding: var(--space-lg);
  border: 1px solid var(--color-border);
  box-shadow: 0 2px 8px var(--color-shadow);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.publication:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--color-shadow-md);
}

.publication__year {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: var(--space-xs);
}

.publication__title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: var(--space-xs);
  line-height: 1.4;
}

.publication__source {
  font-size: var(--font-size-sm);
  color: var(--color-muted);
}

@media (max-width: 768px) {
  .publications__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .publications__grid {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   CONTACT
   ============================================ */
.contact__inner {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: var(--space-3xl);
  align-items: start;
}

.contact__info {
  padding-right: var(--space-xl);
}

.contact__info-title {
  font-family: var(--font-heading);
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin-bottom: var(--space-md);
}

.contact__info-text {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xl);
  line-height: 1.7;
}

.contact__detail {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.contact__detail-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background-color: var(--color-accent-light);
  color: var(--color-accent);
  flex-shrink: 0;
  font-size: var(--font-size-lg);
}

.contact__detail-content a {
  color: var(--color-text);
  font-weight: 500;
}

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

.contact__detail-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

/* Contact Form */
.contact__form {
  background: var(--color-white);
  border-radius: var(--border-radius-lg);
  padding: var(--space-2xl);
  border: 1px solid var(--color-border);
  box-shadow: 0 4px 16px var(--color-shadow);
}

.form__group {
  margin-bottom: var(--space-lg);
}

.form__label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

.form__input,
.form__textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  color: var(--color-text);
  background-color: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form__input:focus,
.form__textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form__textarea {
  resize: vertical;
  min-height: 140px;
}

.form__input::placeholder,
.form__textarea::placeholder {
  color: #9ca3af;
}

.form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
}

.form__submit {
  width: 100%;
}

.form__status {
  margin-top: var(--space-md);
  padding: var(--space-md);
  border-radius: var(--border-radius);
  font-size: var(--font-size-sm);
  font-weight: 500;
  display: none;
}

.form__status--success {
  display: block;
  background-color: #ecfdf5;
  color: #065f46;
  border: 1px solid #a7f3d0;
}

.form__status--error {
  display: block;
  background-color: #fef2f2;
  color: #991b1b;
  border: 1px solid #fecaca;
}

.btn--loading {
  position: relative;
  color: transparent !important;
  pointer-events: none;
}

.btn--loading::after {
  content: '';
  position: absolute;
  width: 20px;
  height: 20px;
  border: 2px solid transparent;
  border-top-color: var(--color-white);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background-color: var(--color-text);
  color: rgba(255, 255, 255, 0.7);
  padding: var(--space-2xl) 0;
}

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

.footer__copy {
  font-size: var(--font-size-sm);
}

.footer__links {
  display: flex;
  gap: var(--space-lg);
}

.footer__link {
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--font-size-sm);
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: var(--color-white);
}

.footer__back-to-top {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--font-size-sm);
  font-weight: 500;
  transition: color var(--transition-fast);
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--font-body);
}

.footer__back-to-top:hover {
  color: var(--color-white);
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal--visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal--delay-1 { transition-delay: 0.1s; }
.reveal--delay-2 { transition-delay: 0.2s; }
.reveal--delay-3 { transition-delay: 0.3s; }
.reveal--delay-4 { transition-delay: 0.4s; }

/* ============================================
   RESPONSIVE
   ============================================ */

/* Tablet */
@media (max-width: 1024px) {
  :root {
    --font-size-5xl: 2.75rem;
    --font-size-4xl: 2rem;
    --font-size-3xl: 1.75rem;
  }

  .hero__inner {
    gap: var(--space-2xl);
  }

  .hero__photo {
    width: 260px;
    height: 260px;
  }

  .stats {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .portfolio__grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

/* Mobile landscape / small tablet */
@media (max-width: 768px) {
  :root {
    --font-size-5xl: 2.25rem;
    --font-size-4xl: 1.75rem;
    --space-5xl: 5rem;
  }

  .nav__links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    flex-direction: column;
    background: var(--color-white);
    padding: calc(var(--nav-height) + var(--space-xl)) var(--space-xl) var(--space-xl);
    box-shadow: -4px 0 20px var(--color-shadow-md);
    transition: right var(--transition-base);
    gap: var(--space-lg);
    align-items: flex-start;
  }

  .nav__links--open {
    right: 0;
  }

  .nav__toggle {
    display: flex;
  }

  .nav__cta {
    margin-left: 0;
    width: 100%;
  }

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

  .hero__inner {
    flex-direction: column-reverse;
    text-align: center;
    padding-top: calc(var(--nav-height) + var(--space-2xl));
  }

  .hero__photo {
    width: 200px;
    height: 200px;
  }

  .hero__location {
    justify-content: center;
  }

  .hero__actions {
    justify-content: center;
  }

  /* Timeline - single column */
  .timeline::before {
    left: 20px;
  }

  .timeline__item,
  .timeline__item:nth-child(odd),
  .timeline__item:nth-child(even) {
    width: 100%;
    left: 0;
    padding-left: 52px;
    padding-right: 0;
    text-align: left;
  }

  .timeline__item:nth-child(odd) .timeline__dot,
  .timeline__item:nth-child(even) .timeline__dot {
    left: 12px;
    right: auto;
  }

  .timeline__item:nth-child(odd) .timeline__details li {
    padding-right: 0;
    padding-left: var(--space-md);
  }

  .timeline__item:nth-child(odd) .timeline__details li::after {
    display: none;
  }

  .timeline__item:nth-child(odd) .timeline__details li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.6em;
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background-color: var(--color-gold);
  }

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

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

  .footer__inner {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }
}

/* Mobile portrait */
@media (max-width: 480px) {
  :root {
    --font-size-5xl: 1.875rem;
    --space-5xl: 4rem;
  }

  .container {
    padding: 0 var(--space-md);
  }

  .stats {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
  }

  .stat-card {
    padding: var(--space-lg);
  }

  .stat-card__number {
    font-size: var(--font-size-3xl);
  }
}

/* --- Reduced Motion --- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* --- Print --- */
@media print {
  .nav,
  .hero__bg,
  .footer__back-to-top,
  .btn,
  .portfolio-card__overlay,
  .modal-backdrop,
  .modal {
    display: none !important;
  }

  body {
    color: #000;
    background: #fff;
  }

  .section {
    padding: var(--space-xl) 0;
    page-break-inside: avoid;
  }

  a {
    color: #000;
    text-decoration: underline;
  }

  a[href]::after {
    content: ' (' attr(href) ')';
    font-size: 0.8em;
  }
}