/* ==========================================================================
   Portfolio — Flat design, responsive, BEM
   Change the variables below to make it yours.
   ========================================================================== */

:root {
  --color-bg: #fafaf7;
  --color-bg-alt: #f0efe9;
  --color-surface: #ffffff;
  --color-text: #1d1d1f;
  --color-muted: #5f5f66;
  --color-primary: #ff5a36;
  --color-primary-dark: #d9431f;
  --color-secondary: #2b59c3;
  --color-success: #1f9d55;
  --color-border: #e2e1db;

  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;

  --radius: 8px;
  --space: 1rem;
  --container: 1100px;
  --header-h: 64px;
}

/* Base
   ========================================================================== */
*,
*::before,
*::after { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
}

img { max-width: 100%; display: block; }
a { color: var(--color-secondary); }
h1, h2, h3 { line-height: 1.2; margin: 0 0 var(--space); }
p { margin: 0 0 var(--space); }

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  padding: .5rem 1rem;
  background: var(--color-text);
  color: #fff;
  z-index: 100;
}
.skip-link:focus { left: 0; }

:focus-visible { outline: 3px solid var(--color-secondary); outline-offset: 2px; }

/* Buttons
   ========================================================================== */
.btn {
  display: inline-block;
  padding: .75rem 1.5rem;
  border: 2px solid transparent;
  border-radius: var(--radius);
  font: inherit;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: background-color .15s, color .15s;
}
.btn--primary { background: var(--color-primary); color: #fff; }
.btn--primary:hover { background: var(--color-primary-dark); }
.btn--outline { border-color: var(--color-text); color: var(--color-text); background: transparent; }
.btn--outline:hover { background: var(--color-text); color: #fff; }
.btn--small { padding: .4rem .9rem; font-size: .875rem; }

/* Header / Nav
   ========================================================================== */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
}

.nav__logo {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--color-text);
  text-decoration: none;
}

.nav__menu {
  display: flex;
  gap: .25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav__link {
  display: block;
  padding: .5rem .85rem;
  border-radius: var(--radius);
  color: var(--color-text);
  text-decoration: none;
  font-weight: 500;
}
.nav__link:hover,
.nav__link--active { background: var(--color-bg-alt); }
.nav__link--cta { background: var(--color-primary); color: #fff; }
.nav__link--cta:hover { background: var(--color-primary-dark); }

.nav__toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 0;
  background: transparent;
  cursor: pointer;
}
.nav__toggle-bar,
.nav__toggle-bar::before,
.nav__toggle-bar::after {
  display: block;
  width: 24px;
  height: 3px;
  margin: 0 auto;
  background: var(--color-text);
  transition: transform .2s;
}
.nav__toggle-bar { position: relative; }
.nav__toggle-bar::before,
.nav__toggle-bar::after { content: ""; position: absolute; left: 0; }
.nav__toggle-bar::before { top: -8px; }
.nav__toggle-bar::after { top: 8px; }

@media (max-width: 760px) {
  .nav__toggle { display: block; }
  .nav__menu {
    display: none;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    padding: 1rem 1.25rem;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
  }
  .nav__menu--open { display: flex; }
}

/* Alert
   ========================================================================== */
.alert {
  margin-top: 1rem;
  padding: 1rem;
  border-radius: var(--radius);
  background: #fde8e3;
  color: var(--color-primary-dark);
}

/* Hero
   ========================================================================== */
.hero { padding: 5rem 0; }

.hero__inner {}

.hero__hello { font-family: var(--font-mono); color: var(--color-primary); margin: 0; }
.hero__name { font-size: clamp(2.25rem, 6vw, 3.75rem); margin: .25rem 0; }
.hero__title { font-size: 1.35rem; font-weight: 600; color: var(--color-muted); }
.hero__tagline { font-size: 1.15rem; max-width: 55ch; }
.hero__actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 1.5rem; }

@media (max-width: 760px) {
  .hero { padding: 3rem 0; }
  .hero__actions { justify-content: center; }
}

/* Sections
   ========================================================================== */
.section { padding: 4.5rem 0; }
.section--alt { background: var(--color-bg-alt); }

.section__title { font-size: clamp(1.75rem, 4vw, 2.5rem); }
.section__title::before { content: "// "; font-family: var(--font-mono); color: var(--color-primary); }
.section__subtitle { margin-top: 3rem; font-size: 1.35rem; }
.section__intro { max-width: 70ch; color: var(--color-muted); }

/* Chips (tags, interests)
   ========================================================================== */
.chips { display: flex; flex-wrap: wrap; gap: .4rem; list-style: none; padding: 0; margin: 0; }

.chip {
  display: inline-block;
  padding: .2rem .65rem;
  border-radius: 999px;
  background: var(--color-bg-alt);
  font-size: .8rem;
  font-weight: 500;
}
.chip--button { border: 0; font: inherit; font-size: .8rem; cursor: pointer; background: #e3eafa; color: var(--color-secondary); }
.chip--button:hover { background: var(--color-secondary); color: #fff; }
.chip--warning { background: #fde8e3; color: var(--color-primary-dark); }

/* About
   ========================================================================== */
.about { display: grid; grid-template-columns: 2fr 1fr; gap: 2.5rem; }
.about__aside { padding: 1.5rem; background: var(--color-surface); border-radius: var(--radius); }
.about__subtitle { font-size: 1rem; text-transform: uppercase; letter-spacing: .05em; color: var(--color-muted); }

@media (max-width: 760px) {
  .about { grid-template-columns: 1fr; }
}

/* Projects
   ========================================================================== */
.filters { display: flex; flex-wrap: wrap; gap: .5rem; margin-bottom: 1.5rem; }

.filters__btn {
  padding: .4rem 1rem;
  border: 2px solid var(--color-text);
  border-radius: 999px;
  background: transparent;
  font: inherit;
  font-weight: 500;
  cursor: pointer;
}
.filters__btn--active { background: var(--color-text); color: #fff; }

.projects { display: grid; grid-template-columns: repeat(auto-fill, minmax(290px, 1fr)); gap: 1.5rem; }

.card {
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform .15s;
}
.card:hover { transform: translateY(-4px); }

.card__media {
  display: grid;
  place-items: center;
  aspect-ratio: 16 / 9;
  background: var(--color-secondary);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
}
.card__media img { width: 100%; height: 100%; object-fit: cover; }

.card__body { display: flex; flex-direction: column; flex: 1; padding: 1.25rem; }
.card__meta { display: flex; justify-content: space-between; font-size: .8rem; color: var(--color-muted); margin-bottom: .5rem; }
.card__title { font-size: 1.2rem; margin-bottom: .5rem; }
.card__summary { color: var(--color-muted); flex: 1; }
.card__footer { display: flex; justify-content: space-between; align-items: center; gap: .5rem; margin-top: 1rem; }

.badge {
  display: inline-block;
  padding: .1rem .5rem;
  border-radius: 4px;
  font-weight: 600;
  text-transform: uppercase;
  font-size: .7rem;
  letter-spacing: .04em;
  background: var(--color-bg-alt);
}
.badge--school { background: #e3eafa; color: var(--color-secondary); }
.badge--pro { background: #e2f5ea; color: var(--color-success); }
.badge--perso { background: #fde8e3; color: var(--color-primary-dark); }
.badge--private { background: var(--color-text); color: #fff; }

.empty { color: var(--color-muted); font-style: italic; }

/* Skills
   ========================================================================== */
.legend { display: flex; flex-wrap: wrap; gap: 1rem; list-style: none; padding: 0; margin: 0 0 1.5rem; font-size: .875rem; }
.legend__item { display: flex; align-items: center; gap: .5rem; }

.blocks { display: grid; gap: 1rem; }

.block { background: var(--color-surface); border-radius: var(--radius); }
.block__summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem 1.5rem;
  font-weight: 700;
  font-size: 1.1rem;
  cursor: pointer;
}
.block__count { font-size: .8rem; font-weight: 500; color: var(--color-muted); white-space: nowrap; }
.block__list { list-style: none; margin: 0; padding: 0 1.5rem 1.5rem; display: grid; gap: 1rem; }

.skill { padding: 1rem; border: 1px solid var(--color-border); border-radius: var(--radius); }
.skill__head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: .5rem; margin-bottom: .5rem; }
.skill__label { font-size: 1rem; margin: 0; }
.skill__text { font-size: .95rem; margin-bottom: .5rem; }
.skill__text strong { color: var(--color-muted); }

.meter { display: inline-flex; align-items: center; gap: 3px; }
.meter__step { width: 22px; height: 8px; border-radius: 2px; background: var(--color-border); }
.meter__step--on { background: var(--color-primary); }
.meter__label { margin-left: .5rem; font-size: .8rem; font-weight: 600; color: var(--color-muted); }

/* Analysis & timeline
   ========================================================================== */
.analysis { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1.5rem; }

.analysis__card { padding: 1.5rem; background: var(--color-surface); border-radius: var(--radius); border-top: 5px solid var(--color-secondary); }
.analysis__card--strengths { border-top-color: var(--color-success); }
.analysis__card--weaknesses { border-top-color: var(--color-primary); }
.analysis__card ul { margin: 0; padding-left: 1.2rem; }

.timeline { list-style: none; margin: 0; padding: 0 0 0 1.5rem; border-left: 3px solid var(--color-border); }
.timeline__item { position: relative; padding: 0 0 1.5rem 1rem; }
.timeline__item::before {
  content: "";
  position: absolute;
  left: calc(-1.5rem - 9px);
  top: .35rem;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--color-primary);
}
.timeline__date { font-family: var(--font-mono); font-size: .85rem; color: var(--color-muted); }
.timeline__title { display: block; font-weight: 600; background: none; border: 0; padding: 0; font: inherit; font-weight: 600; color: var(--color-secondary); cursor: pointer; text-align: left; }
.timeline__title:hover { text-decoration: underline; }

/* Contact
   ========================================================================== */
.contact { display: grid; grid-template-columns: 1fr 1.3fr; gap: 3rem; }
.contact__list { list-style: none; padding: 0; margin: 0 0 1.5rem; }
.contact__list li { margin-bottom: .5rem; }
.socials { display: flex; flex-wrap: wrap; gap: .5rem; list-style: none; padding: 0; margin: 0; }

.form { padding: 1.75rem; background: var(--color-surface); border-radius: var(--radius); border: 1px solid var(--color-border); }
.form__row { margin-bottom: 1rem; }
.form__label { display: block; font-weight: 600; margin-bottom: .3rem; }
.form__input {
  width: 100%;
  padding: .7rem .9rem;
  border: 2px solid var(--color-border);
  border-radius: var(--radius);
  font: inherit;
  background: var(--color-bg);
}
.form__input:focus { border-color: var(--color-secondary); outline: none; }
.form__input--area { resize: vertical; }
.form__status { margin: 1rem 0 0; font-weight: 600; }
.form__status--ok { color: var(--color-success); }
.form__status--error { color: var(--color-primary-dark); }

@media (max-width: 760px) {
  .contact { grid-template-columns: 1fr; }
}

/* Modal (project details)
   ========================================================================== */
.modal {
  width: min(760px, calc(100% - 2rem));
  max-height: calc(100vh - 2rem);
  padding: 0;
  border: 0;
  border-radius: var(--radius);
}
.modal::backdrop { background: rgb(0 0 0 / .6); }
.modal__content { padding: 2rem; }
.modal__close {
  float: right;
  width: 40px;
  height: 40px;
  border: 0;
  border-radius: 50%;
  background: var(--color-bg-alt);
  font-size: 1.4rem;
  cursor: pointer;
}
.modal__image { margin-bottom: 1.5rem; border-radius: var(--radius); }
.modal__section { margin-top: 1.5rem; }
.modal__section h3 { font-size: 1rem; text-transform: uppercase; letter-spacing: .05em; color: var(--color-muted); margin-bottom: .5rem; }
.modal__links { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: 1.5rem; }

/* Footer
   ========================================================================== */
.footer { padding: 2rem 0; background: var(--color-text); color: #fff; }
.footer__inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem; }
.footer p { margin: 0; }
.footer__top { color: #fff; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}