@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@400;500;600;700;800&family=Space+Grotesk:wght@500;600;700&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Vazirmatn:wght@400;500;700&display=swap');

:root {
  --bg: #f4f8fd;
  --bg-dark: #0b1a36;
  --ink: #101a2d;
  --ink-soft: #556481;
  --paper: #ffffff;
  --line: rgba(16, 26, 45, 0.14);

  --hero-1: #0b1a36;
  --hero-2: #10264f;
  --accent: #22c59b;
  --accent-2: #2b9df7;
  --accent-soft: rgba(34, 197, 155, 0.16);

  --font-body: 'Manrope', 'Segoe UI', sans-serif;
  --font-display: 'Space Grotesk', 'Segoe UI', sans-serif;

  --radius-sm: 12px;
  --radius-md: 18px;
  --radius-lg: 24px;

  --shadow-sm: 0 10px 26px rgba(11, 24, 46, 0.08);
  --shadow-md: 0 24px 56px rgba(11, 24, 46, 0.16);

  --header-h: 68px;
}

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

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

body {
  font-family: var(--font-body);
  color: var(--ink);
  line-height: 1.65;
  background:
    radial-gradient(circle at 90% -14%, rgba(43, 157, 247, 0.17), transparent 44%),
    radial-gradient(circle at -8% 84%, rgba(34, 197, 155, 0.18), transparent 44%),
    var(--bg);
  -webkit-font-smoothing: antialiased;
  padding-bottom: 94px;
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  letter-spacing: -0.02em;
}

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

button {
  cursor: pointer;
}

a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 3px solid rgba(43, 157, 247, 0.7);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  top: -40px;
  left: 10px;
  z-index: 4000;
  background: #ffffff;
  color: #0f172a;
  padding: 8px 12px;
  border-radius: 8px;
  border: 1px solid var(--line);
  font-weight: 700;
}

.skip-link:focus {
  top: 10px;
}

.bg-glow {
  position: fixed;
  z-index: -1;
  border-radius: 50%;
  pointer-events: none;
  filter: blur(84px);
}

.bg-glow-1 {
  width: 56vw;
  height: 56vw;
  top: -18vw;
  right: -12vw;
  background: rgba(43, 157, 247, 0.22);
}

.bg-glow-2 {
  width: 56vw;
  height: 56vw;
  bottom: -18vw;
  left: -12vw;
  background: rgba(34, 197, 155, 0.2);
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 1000;
  height: var(--header-h);
  background: rgba(11, 26, 54, 0.58);
  backdrop-filter: blur(10px);
  transition: background 0.2s ease, border-color 0.2s ease;
}

.site-header.scrolled {
  background: rgba(11, 26, 54, 0.82);
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
}

.header-container {
  width: min(1180px, 92%);
  height: 100%;
  margin: 0 auto;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 10px;
}

.logo {
  font-family: var(--font-display);
  font-size: 1.02rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: #ffffff;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  overflow-x: auto;
  scrollbar-width: none;
}

.site-nav::-webkit-scrollbar {
  display: none;
}

.site-nav a {
  white-space: nowrap;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.88);
  transition: background 0.2s ease, color 0.2s ease;
}

.site-nav a:hover,
.site-nav a.active {
  background: var(--accent-soft);
  color: #ffffff;
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 76px;
  padding: 8px 12px;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.72rem;
  font-weight: 800;
  color: #07162b;
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
}

.header-actions {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.lang-toggle {
  border: 1px solid rgba(255, 255, 255, 0.28);
  background: rgba(255, 255, 255, 0.12);
  color: #ffffff;
  border-radius: 999px;
  padding: 8px 12px;
  min-width: 70px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.hero {
  position: relative;
  min-height: 58vh;
  display: flex;
  align-items: center;
  padding: calc(var(--header-h) + 26px) 0 40px;
  color: #ffffff;
  background:
    linear-gradient(145deg, rgba(11, 26, 54, 0.95), rgba(16, 38, 79, 0.86)),
    linear-gradient(50deg, var(--hero-1), var(--hero-2));
  overflow: hidden;
}

.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0.24;
  pointer-events: none;
  background:
    repeating-linear-gradient(120deg, rgba(255, 255, 255, 0.05) 0 2px, transparent 2px 34px),
    radial-gradient(circle at 22% 32%, rgba(34, 197, 155, 0.4), transparent 30%);
}

.hero-content {
  position: relative;
  z-index: 1;
  width: min(980px, 92%);
  margin: 0 auto;
  text-align: center;
}

.hero-label {
  display: inline-block;
  margin-bottom: 14px;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.24);
  background: rgba(255, 255, 255, 0.1);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.7rem;
  font-weight: 700;
}

.hero h1 {
  font-size: clamp(2rem, 10.6vw, 4.2rem);
  line-height: 0.98;
  max-width: 860px;
  margin: 0 auto 16px;
}

.hero h1 span {
  display: block;
  margin-top: 8px;
  color: #95f2de;
  font-weight: 600;
}

.hero-sub {
  max-width: 720px;
  margin: 0 auto 24px;
  font-size: clamp(0.98rem, 4vw, 1.14rem);
  color: rgba(255, 255, 255, 0.86);
}

.hero-cta-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.main-btn {
  width: min(100%, 280px);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 13px 18px;
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #07162b;
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  box-shadow: 0 12px 24px rgba(43, 157, 247, 0.28);
}

.secondary-btn {
  background: rgba(255, 255, 255, 0.14);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.24);
  box-shadow: none;
}

.sig-count {
  font-size: 0.92rem;
  color: rgba(255, 255, 255, 0.82);
}

.sig-count strong {
  color: #9ef6e0;
}

.section {
  padding: 40px 0 64px;
  scroll-margin-top: calc(var(--header-h) + 12px);
}

.container {
  width: min(1180px, 92%);
  margin: 0 auto;
}

#petition {
  margin-top: -22px;
  padding-top: 0;
}

.petition-shell {
  display: grid;
  gap: 16px;
}

.letter-panel,
.sign-panel {
  background: var(--paper);
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
}

.letter-panel {
  overflow: hidden;
}

.letter-paper {
  padding: 22px;
  background: #ffffff;
}

.letter-header {
  padding-bottom: 16px;
  margin-bottom: 20px;
  border-bottom: 1px solid rgba(16, 26, 45, 0.09);
}

.letter-date {
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
  margin-bottom: 8px;
}

.letter-header h2 {
  font-size: clamp(1.28rem, 6.2vw, 2rem);
  color: #152644;
  line-height: 1.15;
}

.petition-text {
  font-size: clamp(1rem, 3.7vw, 1.1rem);
}

.lang-en {
  display: block;
}

.lang-fa {
  display: none !important;
}

body.fa-mode .lang-en {
  display: none !important;
}

body.fa-mode .lang-fa {
  display: block !important;
  font-family: 'Vazirmatn', Tahoma, sans-serif;
  text-align: right;
  direction: rtl;
}

.petition-text p {
  margin-bottom: 18px;
}

.principle {
  margin: 22px 0;
  padding: 18px;
  border-left: 4px solid var(--accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: #f7fbff;
}

.principle h3 {
  font-size: clamp(1.15rem, 5vw, 1.45rem);
  margin-bottom: 8px;
  color: #152644;
}

.principle p {
  color: var(--ink-soft);
}

.letter-signature-area {
  margin-top: 26px;
  padding-top: 16px;
  border-top: 1px solid rgba(16, 26, 45, 0.09);
}

.sign-panel {
  padding: 18px;
}

.sign-panel-header {
  margin-bottom: 14px;
}

.sign-panel-header h2 {
  font-size: clamp(1.2rem, 5.4vw, 1.72rem);
  line-height: 1.15;
  margin-bottom: 6px;
  color: #152644;
}

.sign-panel-header p {
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.form-card {
  padding: 0;
  border: 0;
  box-shadow: none;
  background: transparent;
}

.form-card-light {
  padding-top: 4px;
}

.input-group {
  margin-bottom: 14px;
}

.publish-group {
  margin-bottom: 24px;
  border: 0;
  padding: 0;
}

.publish-group legend {
  margin-bottom: 12px;
  color: var(--ink-soft);
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.radio-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.radio-option {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-weight: 500;
  cursor: pointer;
  text-transform: none;
  letter-spacing: normal;
}

.radio-option input[type="radio"] {
  width: 18px;
  height: 18px;
  accent-color: var(--accent);
}

.input-group label {
  display: block;
  margin-bottom: 6px;
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.input-group-light label {
  color: var(--ink-soft);
}

.form-control {
  width: 100%;
  border-radius: var(--radius-sm);
  padding: 12px 13px;
  font-family: var(--font-body);
  font-size: 1rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-control-light {
  background: #ffffff;
  color: var(--ink);
  border: 1px solid var(--line);
}

.form-control-light::placeholder {
  color: #7e8ca5;
}

.form-control-light:focus {
  outline: none;
  border-color: #5ed9ba;
  box-shadow: 0 0 0 4px rgba(94, 217, 186, 0.18);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

.submit-btn {
  width: 100%;
  margin-top: 6px;
  border: 0;
  border-radius: 999px;
  padding: 13px;
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: #07162b;
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
}

.sign-success {
  display: none;
  text-align: center;
  padding: 34px 0 20px;
}

.sign-success-light h3 {
  font-size: clamp(1.4rem, 6vw, 1.9rem);
  color: #132443;
  margin-bottom: 12px;
}

.sign-success-light p {
  color: var(--ink-soft);
}

.privacy-note {
  display: block;
  margin-top: 6px;
  font-size: 0.75rem;
  color: var(--ink-soft);
  line-height: 1.3;
}

#about {
  padding-top: 18px;
}

.section-title {
  text-align: center;
  font-size: clamp(1.58rem, 7vw, 2.8rem);
  margin-bottom: 26px;
}

.section-title::after {
  content: '';
  display: block;
  width: 70px;
  height: 4px;
  margin: 12px auto 0;
  border-radius: 999px;
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
}

.about-accordion {
  border-top: 1px solid var(--line);
}

.acc-item {
  border-bottom: 1px solid var(--line);
}

.acc-trigger {
  width: 100%;
  border: 0;
  background: none;
  text-align: left;
  padding: 16px 2px;
  font-family: var(--font-display);
  font-size: clamp(1.12rem, 5.2vw, 1.42rem);
  color: #162946;
}

.acc-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}

.acc-content p,
.acc-content ul {
  color: var(--ink-soft);
  padding: 0 0 16px;
}

.acc-content ul {
  margin-left: 20px;
}

.acc-content li {
  margin-bottom: 8px;
}

.acc-item.active .acc-trigger {
  color: #0b9478;
}

.acc-item.active .acc-content {
  max-height: 720px;
}

footer {
  padding: 34px 0 40px;
  text-align: center;
  color: rgba(16, 26, 45, 0.72);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.sticky-bar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2000;
  background: rgba(11, 26, 54, 0.94);
  backdrop-filter: blur(16px);
  border-top: 1px solid rgba(255, 255, 255, 0.14);
  box-shadow: 0 -10px 32px rgba(11, 24, 46, 0.25);
  transform: translateY(100%);
  transition: transform 0.35s ease;
}

.sticky-bar.visible {
  transform: translateY(0);
}

.sticky-bar .container {
  display: flex;
  align-items: center;
  gap: 10px;
  justify-content: space-between;
  padding: 12px 4%;
  width: min(1180px, 100%);
}

.sig-text {
  color: #ffffff;
  font-size: 0.9rem;
  font-weight: 600;
}

.sign-btn-small {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 11px 16px;
  min-width: 146px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.74rem;
  font-weight: 800;
  color: #07162b;
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
}

@media (max-width: 640px) {
  .sig-text {
    display: none;
  }

  .sign-btn-small {
    width: 100%;
  }
}

@media (min-width: 760px) {
  :root {
    --header-h: 76px;
  }

  body {
    padding-bottom: 98px;
  }

  .header-container {
    gap: 18px;
  }

  .logo {
    font-size: 1.22rem;
  }

  .site-nav {
    justify-content: center;
    gap: 10px;
  }

  .site-nav a {
    font-size: 0.8rem;
    padding: 8px 12px;
  }

  .nav-cta {
    min-width: 92px;
    padding: 10px 16px;
  }

  .header-actions {
    gap: 10px;
  }

  .lang-toggle {
    min-width: 78px;
    padding: 9px 14px;
    font-size: 0.76rem;
  }

  .hero {
    min-height: 64vh;
    padding: calc(var(--header-h) + 34px) 0 54px;
  }

  .hero-cta-wrap {
    flex-direction: row;
    justify-content: center;
    flex-wrap: wrap;
    gap: 12px;
  }

  .main-btn {
    width: auto;
    min-width: 210px;
  }

  #petition {
    margin-top: -34px;
  }

  .petition-shell {
    grid-template-columns: minmax(0, 1.28fr) minmax(0, 0.88fr);
    align-items: start;
    gap: 20px;
  }

  .letter-panel {
    position: sticky;
    top: calc(var(--header-h) + 18px);
  }

  .letter-paper {
    max-height: calc(100vh - var(--header-h) - 42px);
    overflow-y: auto;
    padding: 30px;
  }

  .sign-panel {
    position: sticky;
    top: calc(var(--header-h) + 18px);
    padding: 22px;
  }

  .form-grid {
    grid-template-columns: 1fr 1fr;
    gap: 14px;
  }

  #about {
    padding-top: 42px;
  }

  .sticky-bar .container {
    padding: 14px 2%;
  }
}

/* Threshold Visibility */
.threshold-only {
  display: none !important;
}

.threshold-met .threshold-only {
  display: flex !important;
}

.threshold-met .sig-count.threshold-only,
.threshold-met .sig-text.threshold-only {
  display: block !important;
}

.threshold-met .sig-count strong {
  color: var(--accent);
}

/* Tap-First Button Select Styles */
.segmented-control {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 8px;
}

.segmented-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 14px 20px;
  background: rgba(255, 255, 255, 0.6);
  border: 1.5px solid var(--line);
  border-radius: var(--radius-sm);
  color: var(--ink);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.23, 1, 0.32, 1);
  text-align: center;
  position: relative;
}

.segmented-btn:hover {
  border-color: var(--accent-2);
  background: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.segmented-btn.active {
  background: var(--bg-dark);
  color: #ffffff;
  border-color: var(--bg-dark);
  box-shadow: 0 6px 16px rgba(11, 26, 54, 0.2);
  opacity: 1;
}

.segmented-btn.active::after {
  content: "✓";
  margin-left: 10px;
  font-weight: 800;
}

body.fa-mode .segmented-btn.active::after {
  margin-left: 0;
  margin-right: 10px;
}

.input-hidden {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.signature-list-header {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 20px;
  color: #152644;
}

.signature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.signature-item {
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 4px;
  transition: transform 0.2s ease;
}

.signature-item:hover {
  transform: translateX(4px);
}

.sig-name {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--bg-dark);
  line-height: 1.3;
}

.sig-affiliation {
  font-size: 0.82rem;
  color: var(--ink-soft);
  line-height: 1.4;
}

.hidden-iframe {
  display: none;
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}