:root {
  --st-primary: #2196f3;
  --st-primary-dark: #1976d2;
  --st-primary-light: #42a5f5;
  --st-primary-soft: rgba(227, 242, 253, 0.82);

  --st-title: #123a63;
  --st-text: #17324d;
  --st-muted: #6b7280;

  --st-card: rgba(255, 255, 255, 0.72);
  --st-card-strong: rgba(255, 255, 255, 0.88);
  --st-card-soft: rgba(248, 251, 253, 0.76);

  --st-border: rgba(33, 150, 243, 0.24);
  --st-border-strong: rgba(33, 150, 243, 0.36);
  --st-border-soft: rgba(33, 150, 243, 0.16);

  --st-glass-bg:
    linear-gradient(135deg, rgba(255, 255, 255, 0.76), rgba(227, 242, 253, 0.46)),
    radial-gradient(circle at 15% 20%, rgba(33, 150, 243, 0.14), transparent 34%),
    radial-gradient(circle at 88% 18%, rgba(66, 165, 245, 0.12), transparent 36%),
    radial-gradient(circle at 50% 105%, rgba(25, 118, 210, 0.08), transparent 42%);

  --st-shadow:
    0 14px 36px rgba(25, 118, 210, 0.12),
    inset 0 1px 0 rgba(255, 255, 255, 0.72);

  --st-shadow-soft: 0 8px 22px rgba(25, 118, 210, 0.08);
  --st-focus-shadow: 0 0 0 4px rgba(33, 150, 243, 0.14);

  --st-blur: blur(20px) saturate(165%);

  --st-radius-lg: 22px;
  --st-radius-md: 16px;
  --st-radius-sm: 12px;
}

.st-container {
  width: 100%;
  max-width: 980px;
  margin: 0 auto;
  padding: 0 16px;
}

.st-page {
  padding: 26px 0 40px;
  color: var(--st-text);
}

.st-page-hero {
  text-align: center;
  padding: 18px 0 10px;
}

.st-page-title {
  margin: 0;
  font-size: 26px;
  font-weight: 900;
  color: var(--st-title);
  line-height: 1.5;
  letter-spacing: -0.01em;
}

.st-page-subtitle {
  margin: 10px auto 0;
  max-width: 720px;
  color: var(--st-muted);
  font-size: 14px;
  line-height: 1.9;
}

.st-card {
  background: var(--st-glass-bg);
  border: 1px solid var(--st-border);
  border-radius: var(--st-radius-lg);
  box-shadow: var(--st-shadow);
  backdrop-filter: var(--st-blur);
  -webkit-backdrop-filter: var(--st-blur);
  padding: 22px;
  margin-top: 18px;
  color: var(--st-text);
}

.st-card h2 {
  margin: 0 0 10px;
  font-size: 18px;
  font-weight: 900;
  color: var(--st-title);
  line-height: 1.7;
}

.st-card p,
.st-card li {
  color: var(--st-text);
  line-height: 2;
  font-size: 14px;
}

.st-card p {
  margin-top: 0;
}

.st-list {
  margin: 10px 0 0;
  padding: 0 18px 0 0;
}

.st-list li {
  margin: 6px 0;
}

.st-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 16px;
  margin-top: 18px;
}

.st-info-box {
  border: 1px solid var(--st-border);
  border-radius: var(--st-radius-md);
  padding: 16px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.7), rgba(227, 242, 253, 0.34)),
    rgba(255, 255, 255, 0.58);
  box-shadow: var(--st-shadow-soft);
  backdrop-filter: blur(16px) saturate(150%);
  -webkit-backdrop-filter: blur(16px) saturate(150%);
}

.st-info-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px dashed rgba(33, 150, 243, 0.22);
}

.st-info-row:last-child {
  border-bottom: none;
}

.st-info-key {
  color: var(--st-muted);
  font-size: 13px;
  font-weight: 800;
  line-height: 1.8;
}

.st-info-val {
  color: var(--st-title);
  font-size: 13px;
  font-weight: 900;
  text-align: left;
  direction: ltr;
  line-height: 1.8;
}

.st-form-group {
  margin-bottom: 14px;
}

.st-label {
  display: block;
  margin-bottom: 8px;
  font-size: 14px;
  font-weight: 900;
  color: var(--st-title);
}

.st-input,
.st-textarea,
.st-select {
  width: 100%;
  border: 1px solid var(--st-border);
  background: rgba(255, 255, 255, 0.72);
  color: var(--st-text);
  border-radius: var(--st-radius-sm);
  padding: 12px 14px;
  font-family: inherit;
  font-size: 14px;
  outline: none;
  transition: 0.22s ease;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.72);
}

.st-input::placeholder,
.st-textarea::placeholder {
  color: rgba(107, 114, 128, 0.78);
}

.st-input {
  height: 46px;
}

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

.st-input:hover,
.st-textarea:hover,
.st-select:hover {
  border-color: var(--st-border-strong);
  background: rgba(255, 255, 255, 0.82);
}

.st-input:focus,
.st-textarea:focus,
.st-select:focus {
  border-color: var(--st-primary);
  background: #fff;
  box-shadow: var(--st-focus-shadow);
}

.st-btn {
  border: none;
  border-radius: var(--st-radius-sm);
  padding: 12px 16px;
  font-family: inherit;
  font-size: 14px;
  font-weight: 900;
  cursor: pointer;
  transition: 0.22s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  line-height: 1.4;
}

.st-btn:focus {
  outline: none;
  box-shadow: var(--st-focus-shadow);
}

.st-btn-primary {
  background: linear-gradient(135deg, var(--st-primary), var(--st-primary-dark));
  color: #fff;
  box-shadow: 0 10px 24px rgba(33, 150, 243, 0.24);
}

.st-btn-primary:hover {
  background: linear-gradient(135deg, var(--st-primary-dark), var(--st-primary));
  transform: translateY(-1px);
  box-shadow: 0 14px 30px rgba(33, 150, 243, 0.32);
}

.st-btn-light {
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.76), rgba(227, 242, 253, 0.72));
  color: var(--st-primary-dark);
  border: 1px solid var(--st-border);
  box-shadow: var(--st-shadow-soft);
}

.st-btn-light:hover {
  background: var(--st-primary-soft);
  border-color: var(--st-border-strong);
  transform: translateY(-1px);
}

.st-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 10px;
}

.st-notice {
  padding: 12px 14px;
  border-radius: var(--st-radius-sm);
  border: 1px solid rgba(33, 150, 243, 0.26);
  background:
    linear-gradient(135deg, rgba(227, 242, 253, 0.84), rgba(255, 255, 255, 0.72));
  color: var(--st-primary-dark);
  font-size: 13px;
  font-weight: 700;
  line-height: 1.9;
  margin-top: 12px;
  box-shadow: var(--st-shadow-soft);
}

@media (max-width: 860px) {
  .st-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 680px) {
  .st-container {
    padding: 0 10px;
  }

  .st-page {
    padding: 18px 0 34px;
  }

  .st-page-hero {
    padding: 12px 0 8px;
  }

  .st-page-title {
    font-size: 22px;
  }

  .st-page-subtitle {
    font-size: 13px;
  }

  .st-card {
    padding: 18px;
    border-radius: 18px;
  }

  .st-card h2 {
    font-size: 16px;
  }

  .st-card p,
  .st-card li {
    font-size: 13px;
  }

  .st-info-row {
    flex-direction: column;
    gap: 4px;
  }

  .st-info-val {
    text-align: right;
  }

  .st-actions {
    flex-direction: column;
  }

  .st-btn {
    width: 100%;
  }
}

.st-form-group input,
.st-form-group select,
.st-form-group textarea {
  width: 100%;
  min-height: 48px;
  padding: 12px 16px;
  border-radius: 16px;
  border: 1px solid rgba(144, 202, 249, 0.65);
  background: rgba(255, 255, 255, 0.72);
  color: #17324d;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 500;
  outline: none;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.75),
    0 8px 22px rgba(33, 150, 243, 0.08);
  transition: 0.2s ease;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.st-form-group textarea {
  min-height: 150px;
  resize: vertical;
  line-height: 1.9;
}

.st-form-group input::placeholder,
.st-form-group textarea::placeholder {
  color: #9ca3af;
  font-weight: 400;
}

.st-form-group input:focus,
.st-form-group select:focus,
.st-form-group textarea:focus {
  border-color: #2196f3;
  background: rgba(255, 255, 255, 0.92);
  box-shadow:
    0 0 0 4px rgba(33, 150, 243, 0.14),
    0 12px 28px rgba(33, 150, 243, 0.12);
}

.st-form-group input:hover,
.st-form-group select:hover,
.st-form-group textarea:hover {
  border-color: #64b5f6;
}

.st-form-group select {
  cursor: pointer;
}

.st-form-group .errorlist {
  margin: 8px 0 0;
  padding: 10px 14px;
  list-style: none;
  border-radius: 14px;
  background: rgba(239, 68, 68, 0.08);
  border: 1px solid rgba(239, 68, 68, 0.18);
  color: #b91c1c;
  font-size: 0.88rem;
  line-height: 1.8;
}




















/* Mobile Optimization - Compact/Tighter Version */
@media (max-width: 680px) {
  .st-container {
    padding: 0 8px; /* پدینگ کناره‌ها کمتر شد */
  }

  .st-page {
    padding: 12px 0 20px;
  }

  .st-page-title {
    font-size: 19px; /* عنوان صفحه فشرده‌تر */
  }

  .st-page-subtitle {
    font-size: 12px;
    margin-top: 6px;
    line-height: 1.6;
  }

  .st-card {
    padding: 14px; /* پدینگ داخل کارت‌ها کمتر شد */
    border-radius: 14px;
    margin-top: 12px;
  }

  .st-card h2 {
    font-size: 15px;
    margin-bottom: 6px;
  }

  .st-card p,
  .st-card li {
    font-size: 12px;
    line-height: 1.8;
  }

  /* کوچک‌سازی ورودی‌ها و فرم‌ها */
  .st-form-group input,
  .st-form-group select,
  .st-form-group textarea {
    min-height: 38px; /* ارتفاع کمتر */
    padding: 8px 12px;
    font-size: 0.85rem;
    border-radius: 10px;
  }

  .st-form-group textarea {
    min-height: 100px; /* ارتفاع تکست‌اریا کمتر */
  }

  .st-label {
    font-size: 12px;
    margin-bottom: 4px;
  }

  .st-btn {
    padding: 8px 12px;
    font-size: 12px;
    border-radius: 8px;
  }

  .st-info-box {
    padding: 10px;
    border-radius: 12px;
  }

  .st-info-key, 
  .st-info-val {
    font-size: 12px;
  }

  .st-info-row {
    padding: 6px 0;
  }

  .st-notice {
    padding: 8px 10px;
    font-size: 11px;
    margin-top: 8px;
  }

  .st-form-group .errorlist {
    padding: 6px 10px;
    font-size: 0.78rem;
    border-radius: 10px;
    margin-top: 4px;
  }
}

/* برای موبایل‌های خیلی کوچک (زیر 400px) */
@media (max-width: 400px) {
  .st-page-title {
    font-size: 17px;
  }
  
  .st-card {
    padding: 10px;
  }
}