/* ============================================
   Adi Dwek Bonar - Easy to Update Stylesheet

   HOW TO UPDATE:
   - Change colors: Edit the CSS variables below
   - Change fonts: Update font-family variables
   - Change spacing: Update spacing variables
   ============================================ */

:root {
  /* === COLORS (edit these to change the whole site) === */
  --color-primary: #007CAF;
  --color-primary-dark: #005a7f;
  --color-accent: #7DB627;
  --color-text: #4F4F4F;
  --color-text-light: #777;
  --color-heading: #333;
  --color-bg: #f5f0eb;
  --color-white: #fff;
  --color-card-bg: rgba(255, 255, 255, 0.92);
  --color-card-border: rgba(0, 124, 175, 0.15);
  --color-shadow: rgba(0, 0, 0, 0.12);
  --color-footer-bg: rgba(79, 79, 79, 0.9);

  /* === FONTS === */
  --font-body: 'Georgia', 'Palatino Linotype', 'Times New Roman', serif;
  --font-heading: 'Helvetica Neue', Arial, sans-serif;
  --font-nav: 'Helvetica Neue', Arial, sans-serif;

  /* === SPACING === */
  --max-width: 860px;
  --card-padding: 2.5rem;
  --card-radius: 8px;
  --section-gap: 2rem;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  line-height: 1.7;
  background-color: var(--color-bg);
  background-image: url('../images/background.jpg');
  background-size: cover;
  background-position: center top;
  background-attachment: fixed;
  min-height: 100vh;
}

/* RTL support for Hebrew pages */
body.rtl {
  direction: rtl;
  text-align: right;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--color-primary-dark);
}

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

/* === HEADER & NAVIGATION === */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-card-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 2px 12px var(--color-shadow);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.5rem;
}

.logo img {
  height: 40px;
  width: auto;
}

.main-nav {
  display: flex;
  gap: 0;
  list-style: none;
}

.main-nav li a {
  display: block;
  padding: 0.5rem 1rem;
  font-family: var(--font-nav);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text);
  border-radius: 4px;
  transition: background 0.2s, color 0.2s;
}

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

.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  color: var(--color-text);
}

.menu-toggle svg {
  width: 28px;
  height: 28px;
}

/* === MAIN CONTENT === */
.site-main {
  max-width: var(--max-width);
  margin: 2rem auto;
  padding: 0 1.5rem;
  display: flex;
  flex-direction: column;
  gap: var(--section-gap);
}

/* === CARD (the main content container) === */
.card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-card-border);
  border-radius: var(--card-radius);
  padding: var(--card-padding);
  box-shadow: 0 4px 20px var(--color-shadow);
}

.card h1 {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
  line-height: 1.3;
}

.card h2 {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  color: var(--color-primary);
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
}

.card h3 {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  color: var(--color-heading);
  margin-top: 1.2rem;
  margin-bottom: 0.4rem;
}

.card p {
  margin-bottom: 1rem;
}

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

/* === WELCOME SECTION (Home) === */
.welcome h1 {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.welcome .subtitle {
  font-size: 1.15rem;
  color: var(--color-text-light);
  font-style: italic;
}

/* === PAPER CARD (article preview) === */
.paper-card {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
}

.paper-card .paper-image {
  flex-shrink: 0;
  width: 160px;
  height: 120px;
  object-fit: cover;
  border-radius: 6px;
  box-shadow: 0 2px 8px var(--color-shadow);
}

.paper-card .paper-image.portrait {
  width: 120px;
  height: 160px;
}

.paper-card .paper-content {
  flex: 1;
}

.paper-card .paper-title {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  color: var(--color-primary);
  margin-bottom: 0.3rem;
}

.paper-card .paper-title a {
  color: var(--color-primary);
}

.paper-card .paper-title a:hover {
  color: var(--color-primary-dark);
}

.paper-card .paper-date {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-bottom: 0.5rem;
}

.paper-card .paper-excerpt {
  font-size: 0.95rem;
  line-height: 1.6;
}

.paper-card .read-more {
  display: inline-block;
  margin-top: 0.5rem;
  font-weight: 600;
  color: var(--color-primary);
  font-family: var(--font-heading);
  font-size: 0.9rem;
}

.paper-card .read-more:hover {
  color: var(--color-accent);
}

/* === FULL ARTICLE === */
.article-header {
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 2px solid var(--color-card-border);
}

.article-header h1 {
  margin-bottom: 0.3rem;
}

.article-header .article-meta {
  display: flex;
  gap: 1rem;
  align-items: center;
  font-size: 0.9rem;
  color: var(--color-text-light);
  font-family: var(--font-heading);
}

.article-header .article-meta a {
  color: var(--color-primary);
}

.article-body {
  font-size: 1.05rem;
  line-height: 1.8;
}

.article-body p {
  margin-bottom: 1.2rem;
}

.article-image {
  float: right;
  margin: 0 0 1.5rem 1.5rem;
  max-width: 280px;
  border-radius: 6px;
  box-shadow: 0 4px 16px var(--color-shadow);
}

body.rtl .article-image {
  float: left;
  margin: 0 1.5rem 1.5rem 0;
}

.article-footer {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--color-card-border);
}

/* === ABOUT PAGE === */
.about-image {
  float: right;
  margin: 0 0 1.5rem 2rem;
  width: 250px;
  border-radius: 8px;
  box-shadow: 0 4px 16px var(--color-shadow);
}

body.rtl .about-image {
  float: left;
  margin: 0 2rem 1.5rem 0;
}

.credentials {
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--color-card-border);
  font-size: 0.9rem;
  color: var(--color-text-light);
}

/* === CONTACT FORM === */
.contact-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.contact-form .form-group {
  display: flex;
  flex-direction: column;
}

.contact-form .form-group.full-width {
  grid-column: 1 / -1;
}

.contact-form label {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-heading);
  margin-bottom: 0.3rem;
}

.contact-form input,
.contact-form textarea {
  font-family: var(--font-body);
  font-size: 1rem;
  padding: 0.7rem 1rem;
  border: 1px solid #ddd;
  border-radius: 6px;
  background: var(--color-white);
  color: var(--color-text);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0, 124, 175, 0.1);
}

.contact-form textarea {
  min-height: 120px;
  resize: vertical;
}

.contact-form .submit-btn {
  grid-column: 1 / -1;
  justify-self: start;
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  padding: 0.75rem 2.5rem;
  background: var(--color-primary);
  color: var(--color-white);
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.2s, transform 0.1s;
}

.contact-form .submit-btn:hover {
  background: var(--color-primary-dark);
}

.contact-form .submit-btn:active {
  transform: scale(0.98);
}

.form-status {
  grid-column: 1 / -1;
  padding: 0.75rem 1rem;
  border-radius: 6px;
  font-family: var(--font-heading);
  font-size: 0.9rem;
  display: none;
}

.form-status.success {
  display: block;
  background: #e8f5e9;
  color: #2e7d32;
  border: 1px solid #a5d6a7;
}

.form-status.error {
  display: block;
  background: #ffebee;
  color: #c62828;
  border: 1px solid #ef9a9a;
}

/* === CROSS-LINKS (link to other language papers) === */
.cross-link {
  display: inline-block;
  padding: 0.6rem 1.5rem;
  background: var(--color-accent);
  color: var(--color-white) !important;
  border-radius: 6px;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
  transition: background 0.2s;
}

.cross-link:hover {
  background: #6a9e1f;
  color: var(--color-white) !important;
}

/* === REFERENCES === */
.reference-group {
  margin-bottom: 2rem;
}

.reference-group h2 {
  margin-bottom: 1rem;
}

.reference-group p {
  font-size: 0.95rem;
  padding-left: 1.5rem;
  text-indent: -1.5rem;
  margin-bottom: 0.75rem;
}

body.rtl .reference-group p {
  padding-left: 0;
  padding-right: 1.5rem;
  text-indent: -1.5rem;
}

/* === FOOTER === */
.site-footer {
  max-width: var(--max-width);
  margin: 2rem auto 3rem;
  padding: 1.5rem;
  text-align: center;
}

.site-footer .footer-inner {
  background: var(--color-footer-bg);
  border-radius: var(--card-radius);
  padding: 1.5rem 2rem;
  color: rgba(255, 255, 255, 0.9);
}

.site-footer a {
  color: rgba(255, 255, 255, 0.9);
}

.site-footer a:hover {
  color: var(--color-white);
}

.footer-brand {
  font-family: var(--font-heading);
  font-size: 1rem;
  margin-bottom: 0.3rem;
}

.footer-brand span {
  font-size: 0.85rem;
  opacity: 0.8;
}

.footer-email {
  font-size: 0.9rem;
  opacity: 0.8;
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
  :root {
    --card-padding: 1.5rem;
  }

  .header-inner {
    padding: 0.6rem 1rem;
  }

  .menu-toggle {
    display: block;
  }

  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-card-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    flex-direction: column;
    padding: 0.5rem 1rem 1rem;
    box-shadow: 0 8px 20px var(--color-shadow);
  }

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

  .main-nav li a {
    padding: 0.75rem 1rem;
  }

  .paper-card {
    flex-direction: column;
  }

  .paper-card .paper-image {
    width: 100%;
    height: 180px;
  }

  .paper-card .paper-image.portrait {
    width: 100%;
    height: 220px;
  }

  .article-image,
  body.rtl .article-image {
    float: none;
    margin: 0 0 1.5rem 0;
    max-width: 100%;
  }

  .about-image,
  body.rtl .about-image {
    float: none;
    margin: 0 auto 1.5rem;
    display: block;
    width: 200px;
  }

  .contact-form {
    grid-template-columns: 1fr;
  }

  .card h1 {
    font-size: 1.5rem;
  }

  .site-main {
    padding: 0 1rem;
  }
}

@media (max-width: 480px) {
  :root {
    --card-padding: 1.2rem;
  }

  .logo img {
    height: 32px;
  }

  body {
    background-attachment: scroll;
  }
}

/* === LANGUAGE SWITCHER === */
.lang-switcher {
  margin-left: 0.5rem;
}

.lang-switcher a {
  background: var(--color-primary) !important;
  color: var(--color-white) !important;
  border-radius: 4px;
  padding: 0.4rem 0.8rem !important;
  font-size: 0.85rem !important;
  font-weight: 600;
  letter-spacing: 0.03em;
  transition: background 0.2s, transform 0.1s;
}

.lang-switcher a:hover {
  background: var(--color-primary-dark) !important;
  transform: scale(1.05);
}

body.rtl .lang-switcher {
  margin-left: 0;
  margin-right: 0.5rem;
}

/* === UTILITY === */
.text-center { text-align: center; }
.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }
.clearfix::after { content: ''; display: table; clear: both; }

/* === TEXT LOGO === */
.logo { display: flex; flex-direction: column; text-decoration: none; line-height: 1; gap: 2px; }
.logo-name {
  font-family: var(--font-heading); font-size: 1.15rem; font-weight: 700;
  color: var(--color-heading); letter-spacing: -0.02em;
  transition: color var(--transition);
}
.logo:hover .logo-name { color: var(--color-primary); }
.logo-tagline {
  font-family: var(--font-heading); font-size: 0.65rem; font-weight: 400;
  color: var(--color-text-light); letter-spacing: 0.03em;
}
@media (max-width: 480px) {
  .logo-name { font-size: 1rem; }
  .logo-tagline { font-size: 0.58rem; }
}