/* ============================================================
   PROTONVIX — GLOBAL STYLES
   Reset, base, typography, layout, nav, footer
   ============================================================ */

/* ---- Import tokens & animation ---- */
@import url('tokens.css');
@import url('animations.css');
@import url('https://fonts.googleapis.com/css2?family=Figtree:ital,wght@0,300;0,400;0,500;0,600;0,700;0,800;0,900;1,300;1,400&family=Poppins:ital,wght@0,200;0,300;0,400;0,500;1,200;1,300;1,400&display=swap');

/* ---- Modern Reset ---- */

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  font-size: 16px;
}

body {
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
  font-family: var(--font-sans);
  font-weight: var(--fw-light);
  font-size: var(--text-base);
  line-height: var(--lh-loose);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
}

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

ul, ol {
  list-style: none;
}

/* ---- Typography base ---- */

h1, h2, h3, h4 {
  font-weight: var(--fw-extralight);
  line-height: var(--lh-tight);
  letter-spacing: var(--ls-wide);
  color: var(--color-text-primary);
}

h1 { font-size: clamp(var(--text-4xl), 6vw, var(--text-6xl)); }
h2 { font-size: clamp(var(--text-3xl), 4vw, var(--text-5xl)); }
h3 { font-size: clamp(var(--text-xl), 2.5vw, var(--text-3xl)); }
h4 { font-size: var(--text-xl); font-weight: var(--fw-medium); }

p { line-height: var(--lh-loose); }

/* ---- Utility classes ---- */

.serif  { font-family: var(--font-serif); }
.sans   { font-family: var(--font-sans); }

.text-gold     { color: var(--color-gold); }
.text-muted    { color: var(--color-text-muted); }
.text-platinum { color: var(--color-platinum); }

.theme-dark {
  --color-bg-primary: #000000;
  --color-surface: #000000;
  --color-text-primary: var(--white);
  --color-text-muted: rgba(255, 255, 255, 0.7);
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
}
.eyebrow {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: var(--text-label);
  font-weight: var(--fw-medium);
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: var(--space-6);
}

.section-headline {
  font-family: var(--font-serif);
  font-weight: var(--fw-light);
  letter-spacing: var(--ls-wide);
  margin-bottom: var(--space-6);
}

.section-divider {
  width: 100%;
  height: 1px;
  background: var(--color-gold-dim);
  border: none;
}

/* ---- Layout wrappers ---- */

.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--gutter-desktop);
}

.inner {
  max-width: var(--content-width);
  margin-inline: auto;
}

section {
  padding-block: var(--space-12);
}

/* ---- NAV ---- */

#site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-nav);
  padding-block: var(--space-5);
  transition:
    background var(--duration-base) var(--ease-in-out),
    border-color var(--duration-base) var(--ease-in-out),
    padding var(--duration-base) var(--ease-in-out);
  border-bottom: 1px solid transparent;
}

#site-nav.scrolled {
  background: var(--color-bg-primary);
  border-bottom-color: var(--color-border);
  padding-block: var(--space-4);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
}

/* Logo */
.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
  text-decoration: none;
}

.nav-logo-mark {
  width: 190px;
  height: 38px;
  object-fit: contain;
}

.nav-logo-text {
  font-family: var(--font-sans);
  font-size: var(--text-lg);
  font-weight: var(--fw-semibold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-primary);
  line-height: 1;
}

/* Center links */
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-10);
}

.nav-link {
  font-size: var(--text-sm);
  font-weight: var(--fw-medium);
  letter-spacing: 0.04em;
  color: var(--color-text-muted);
  transition: color var(--duration-fast);
  position: relative;
  padding-bottom: 2px;
}

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

/* Mobile toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--color-text-primary);
  transition: transform var(--duration-base), opacity var(--duration-base);
}

.nav-toggle.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* Mobile menu */
.nav-mobile {
  display: none;
  flex-direction: column;
  gap: 0;
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  padding: var(--space-6) var(--gutter-mobile);
}

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

.nav-mobile .nav-link {
  padding-block: var(--space-4);
  font-size: var(--text-base);
  border-bottom: 1px solid var(--color-border);
}

.nav-mobile .nav-link:last-child {
  border-bottom: none;
}

/* ============================================================
   Dropdown & Mobile Accordion Navigation Styles
   ============================================================ */

.nav-item-dropdown {
  position: relative;
  padding-bottom: var(--space-2); /* Extra hover area */
  margin-bottom: calc(-1 * var(--space-2));
}

.nav-dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--color-border);
  border-top: 3px solid var(--color-gold);
  border-radius: 8px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
  padding: var(--space-4);
  min-width: 220px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.2s var(--ease-out), transform 0.2s var(--ease-out), visibility 0.2s;
  z-index: var(--z-modal);
}

.nav-item-dropdown:hover .nav-dropdown,
.nav-item-dropdown:focus-within .nav-dropdown {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(2px);
}

.nav-dropdown ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  list-style: none;
  padding: 0;
  margin: 0;
}

.nav-dropdown ul li {
  width: 100%;
}

.dropdown-link {
  font-size: var(--text-sm);
  font-weight: var(--fw-medium);
  color: var(--color-text-muted) !important;
  text-decoration: none !important;
  padding: var(--space-2) var(--space-4);
  border-radius: 4px;
  display: block;
  white-space: nowrap;
  transition: color var(--duration-fast), background var(--duration-fast);
}

.dropdown-link:hover {
  color: var(--color-gold) !important;
  background: rgba(97, 97, 255, 0.05);
}

/* Industries 2-column Grid Dropdown */
.nav-dropdown-grid {
  min-width: 440px;
}

.nav-dropdown-grid ul {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-1) var(--space-4);
}

/* Caret icon */
.nav-link-caret {
  display: inline-flex;
  align-items: center;
}

.nav-item-dropdown:hover .caret-icon {
  transform: rotate(180deg);
}

/* Mobile Accordion Styles using <details>/<summary> */
.mobile-nav-details {
  border-bottom: 1px solid var(--color-border);
}

.mobile-nav-summary {
  list-style: none;
  font-size: var(--text-base);
  font-weight: var(--fw-medium);
  letter-spacing: 0.04em;
  color: var(--color-text-muted);
  padding-block: var(--space-4);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  outline: none;
  user-select: none;
}

/* Remove default triangle */
.mobile-nav-summary::-webkit-details-marker {
  display: none;
}

.mobile-nav-summary::after {
  content: '+';
  font-family: monospace;
  font-size: 1.1rem;
  color: var(--color-text-muted);
  font-weight: var(--fw-light);
}

.mobile-nav-details[open] .mobile-nav-summary::after {
  content: '−';
}

.mobile-submenu {
  display: flex;
  flex-direction: column;
  gap: 0;
  padding-left: var(--space-4);
  padding-bottom: var(--space-4);
  background: rgba(0, 0, 0, 0.01);
}

.mobile-submenu .nav-link {
  font-size: var(--text-sm);
  padding-block: var(--space-2);
  border-bottom: none !important;
}

.mobile-submenu .nav-link:hover {
  color: var(--color-gold);
}

.mobile-cta {
  margin-top: var(--space-6);
  width: 100%;
}


/* ---- BUTTONS ---- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.5rem 1.25rem;     /* monday.com: compact pill padding */
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: var(--fw-medium);
  letter-spacing: 0;           /* monday.com: no extra tracking */
  text-transform: none;        /* monday.com: normal sentence case, NOT uppercase */
  border-radius: var(--radius-button, 20px);
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
}

.btn-gold {
  background: var(--color-gold);
  color: var(--text-light);
  border: 1px solid var(--color-gold);
}

.btn-outline {
  background: transparent;
  color: var(--color-gold);
  border: 1.5px solid var(--color-gold); /* monday.com: slightly thicker border */
  transition: background var(--duration-fast), color var(--duration-fast);
}

.btn-outline:hover {
  background: var(--color-gold);
  color: var(--text-light);
}

.btn-text {
  background: transparent;
  color: var(--color-text-primary);
  border: none;
  padding-inline: 0;
  position: relative;
  padding-bottom: 3px;
}

.btn-text::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 1px;
  background: var(--color-gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--duration-base) var(--ease-out);
}

.btn-text:hover::after {
  transform: scaleX(1);
}

/* ---- FOOTER ---- */

#site-footer {
  background: var(--monday-dark);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--space-12);
  color: var(--text-light);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(4, 1fr);
  gap: var(--space-12);
  padding-bottom: var(--space-8);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand p {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.65);
  line-height: var(--lh-loose);
  margin-top: var(--space-5);
  max-width: 280px;
}

.footer-social {
  display: flex;
  gap: var(--space-4);
  margin-top: var(--space-6);
}

.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--duration-fast) var(--ease-out);
  color: rgba(255, 255, 255, 0.65);
}

.footer-social a:hover {
  transform: translateY(-3px);
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.footer-social a[aria-label="LinkedIn"]:hover {
  background: #0A66C2;
}

.footer-social a[aria-label="X/Twitter"]:hover {
  background: #1DA1F2;
}

.footer-social a[aria-label="Facebook"]:hover {
  background: #1877F2;
}

.footer-social a[aria-label="Instagram"]:hover {
  background: linear-gradient(45deg, #f09433 0%, #e6683c 25%, #dc2743 50%, #cc2366 75%, #bc1888 100%);
}

.footer-social a[aria-label="Quora"]:hover {
  background: #B92B27;
}

.footer-social a[aria-label="Reddit"]:hover {
  background: #FF4500;
}

.footer-col h5 {
  font-family: var(--font-sans);
  font-size: var(--text-label);
  font-weight: var(--fw-medium);
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
  color: var(--text-light);
  margin-bottom: var(--space-6);
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-col ul li a {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.65);
  transition: color var(--duration-fast);
}

.footer-col ul li a:hover {
  color: var(--monday-purple);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-4);
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer-bottom p,
.footer-bottom a {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.65);
}

.footer-bottom a:hover { color: var(--monday-purple); }

.footer-links {
  display: flex;
  gap: var(--space-6);
  flex-wrap: wrap;
}

.footer-badge {
  display: inline-flex;
  align-items: center;
}

/* ---- RESPONSIVE ---- */

@media (max-width: 1024px) {
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  #site-nav .btn-outline { display: none; }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-12);
  }
}

@media (max-width: 640px) {
  :root {
    --gutter-desktop: var(--gutter-mobile);
  }

  section {
    padding-block: var(--space-8);
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-10);
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ============================================================
   NEWSLETTER SYSTEM
   ============================================================ */

/* Footer Newsletter banner */
.footer-newsletter {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  padding: var(--space-6) var(--space-8);
  margin-bottom: var(--space-10);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
}
.footer-newsletter .newsletter-info {
  flex: 1;
}
.footer-newsletter .newsletter-title {
  font-family: var(--font-serif);
  font-size: var(--text-lg);
  font-weight: var(--fw-medium);
  color: var(--white);
  margin-bottom: var(--space-2);
}
.footer-newsletter .newsletter-desc {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.6);
  line-height: var(--lh-normal);
}
.footer-newsletter .newsletter-form {
  flex: 1;
  max-width: 450px;
  width: 100%;
}
.footer-newsletter .newsletter-input-group {
  display: flex;
  gap: var(--space-3);
}
.footer-newsletter .newsletter-input-group .form-control {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: var(--white);
  padding: 0.6rem var(--space-4);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  flex: 1;
  outline: none;
  transition: all var(--duration-fast) var(--ease-out);
}
.footer-newsletter .newsletter-input-group .form-control::placeholder {
  color: var(--white);
  opacity: 0.7;
}
.footer-newsletter .newsletter-input-group .form-control:focus {
  border-color: var(--monday-purple);
  background: rgba(255, 255, 255, 0.08);
  box-shadow: 0 0 0 3px rgba(97, 97, 255, 0.25);
}
.footer-newsletter .newsletter-message {
  font-size: var(--text-sm);
  margin-top: var(--space-3);
  line-height: var(--lh-normal);
}
.footer-newsletter .newsletter-message.error {
  color: var(--monday-red);
}
.footer-newsletter .newsletter-message.success {
  color: var(--monday-green);
  font-weight: var(--fw-medium);
}

/* Newsletter Landing Page */
.newsletter-hero {
  text-align: center;
  padding-bottom: var(--space-8);
}
.newsletter-grid-wrapper {
  padding-bottom: var(--space-16);
}
.newsletter-split {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--space-12);
  align-items: start;
}
.newsletter-value-prop h3 {
  font-family: var(--font-serif);
  font-size: var(--text-2xl);
  margin-bottom: var(--space-6);
  color: var(--color-text-primary);
}
.newsletter-features {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  margin-top: var(--space-6);
}
.newsletter-feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-5);
  box-shadow: var(--shadow-card);
  transition: all var(--duration-base) var(--ease-out);
}
.newsletter-feature-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}
.newsletter-feature-card .feature-icon {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-2);
}
.newsletter-feature-card h4 {
  font-size: var(--text-base);
  font-weight: var(--fw-semibold);
  margin-bottom: var(--space-2);
  color: var(--color-text-primary);
}
.newsletter-feature-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: var(--lh-normal);
}

.newsletter-form-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-8);
  box-shadow: var(--shadow-card);
  transition: box-shadow var(--duration-base);
}
.newsletter-form-card:hover {
  box-shadow: var(--shadow-hover);
}
.newsletter-form-card .form-success {
  display: none;
  text-align: center;
  padding: var(--space-6) 0;
}
.newsletter-form-card .form-success h3 {
  font-family: var(--font-serif);
  font-size: var(--text-2xl);
  color: var(--color-gold);
  margin-bottom: var(--space-4);
}
.newsletter-form-card .form-success p {
  color: var(--color-text-muted);
  font-size: var(--text-base);
}

/* Recent Issues Preview styling */
.newsletter-recent-section {
  padding-block: var(--space-12);
  border-top: 1px solid var(--color-border);
}
.newsletter-recent-section h3 {
  font-family: var(--font-serif);
  text-align: center;
  font-size: var(--text-3xl);
  margin-bottom: var(--space-10);
}
.recent-issues-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}
.issue-preview-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-6);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all var(--duration-base) var(--ease-out);
  box-shadow: var(--shadow-card);
}
.issue-preview-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
  border-color: var(--color-gold);
}
.issue-meta {
  font-size: var(--text-label);
  font-weight: var(--fw-semibold);
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: var(--space-3);
}
.issue-preview-card h4 {
  font-family: var(--font-serif);
  font-size: var(--text-lg);
  font-weight: var(--fw-light);
  line-height: var(--lh-snug);
  margin-bottom: var(--space-4);
  color: var(--color-text-primary);
}
.issue-excerpt {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: var(--lh-normal);
  margin-bottom: var(--space-6);
}
.issue-read-more {
  font-size: var(--text-sm);
  font-weight: var(--fw-medium);
  color: var(--color-gold);
  display: flex;
  align-items: center;
  gap: var(--space-1);
  margin-top: auto;
}

/* Interactive past issue modal overlay */
.issue-modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.50);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-base) var(--ease-out);
}
.issue-modal.show {
  opacity: 1;
  pointer-events: auto;
}
.issue-modal-content {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  max-width: 680px;
  width: 90%;
  max-height: 80vh;
  overflow-y: auto;
  position: relative;
  padding: var(--space-8) var(--space-10);
  box-shadow: 0 20px 50px rgba(0,0,0,0.15);
  transform: translateY(20px);
  transition: transform var(--duration-base) var(--ease-out);
}
.issue-modal.show .issue-modal-content {
  transform: translateY(0);
}
.issue-modal-close {
  position: absolute;
  top: var(--space-5);
  right: var(--space-5);
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  color: var(--color-text-muted);
  transition: color var(--duration-fast);
}
.issue-modal-close:hover {
  color: var(--color-text-primary);
}
.issue-modal-body h2 {
  font-family: var(--font-serif);
  font-size: var(--text-2xl);
  margin-bottom: var(--space-2);
  color: var(--color-text-primary);
}
.issue-modal-body .issue-modal-meta {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-border);
}
.issue-modal-article {
  font-size: var(--text-base);
  color: var(--color-text-primary);
  line-height: var(--lh-loose);
}
.issue-modal-article p {
  margin-bottom: var(--space-5);
}
.issue-modal-article code {
  background: var(--color-bg-secondary);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  font-size: 0.9em;
  font-family: monospace;
  color: var(--color-gold);
}
.issue-modal-article pre {
  background: #1e1e24;
  color: #abb2bf;
  padding: var(--space-4);
  border-radius: var(--radius-sm);
  overflow-x: auto;
  font-family: monospace;
  font-size: 0.9em;
  line-height: 1.5;
  margin-bottom: var(--space-5);
}

@media (max-width: 1024px) {
  .footer-newsletter {
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-6);
    gap: var(--space-6);
  }
  .footer-newsletter .newsletter-form {
    max-width: 100%;
  }
}

@media (max-width: 992px) {
  .newsletter-split {
    grid-template-columns: 1fr;
    gap: var(--space-10);
  }
  .recent-issues-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 640px) {
  .recent-issues-grid {
    grid-template-columns: 1fr;
  }
  .issue-modal-content {
    padding: var(--space-6) var(--space-5);
  }
}