:root {
  --bg: #fafaf8;
  --surface: #ffffff;
  --surface2: #f3f4f6;
  --border: #e0e0d8;
  --accent: #1e3a5f;
  --accent2: #2d5f8a;
  --text: #1a1a1a;
  --sub: #6b7280;
  --r: 10px;
  --shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
}

/* NAV */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--accent);
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
  padding: 0 28px;
  height: 56px;
  display: flex;
  align-items: center;
  gap: 16px;
}
.nav-back {
  display: flex;
  align-items: center;
  gap: 6px;
  color: rgba(255, 255, 255, 0.8);
  font-size: 14px;
  padding: 6px 12px;
  border-radius: 6px;
  transition: background 0.15s;
  text-decoration: none;
}
.nav-back:hover {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
}
.nav-back svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}
.nav-title {
  font-weight: 600;
  font-size: 15px;
  color: #fff;
}

/* FORM PAGE */
.form-page {
  max-width: 640px;
  margin: 2.5rem auto;
  padding: 0 1.25rem 3rem;
}

.form-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 2rem;
  box-shadow: var(--shadow);
}

.form-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 4px;
}

.form-sub {
  color: var(--sub);
  font-size: 14px;
  margin-bottom: 1.75rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--border);
}

/* FORM GROUPS */
.fg {
  margin-bottom: 1.25rem;
}

.flbl {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}

.finput {
  width: 100%;
  padding: 9px 12px;
  border: 1.5px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
  font-family: inherit;
  color: var(--text);
  background: var(--surface);
  transition: border-color 0.15s;
}

.finput:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(30, 58, 95, 0.08);
}

textarea.finput {
  resize: vertical;
  min-height: 90px;
}

/* SUBMIT */
.fsubmit {
  width: 100%;
  padding: 12px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  transition: background 0.15s;
  margin-top: 0.5rem;
}

.fsubmit:hover { background: var(--accent2); }
.fsubmit:disabled { opacity: 0.6; cursor: not-allowed; }

/* MESSAGE */
#formMessage {
  margin-top: 1rem;
  padding: 12px 16px;
  border-radius: 6px;
  font-size: 14px;
  text-align: center;
  display: none;
}

.success {
  background: #d1fae5;
  color: #065f46;
  border: 1px solid #6ee7b7;
}

.error {
  background: #fee2e2;
  color: #991b1b;
  border: 1px solid #fca5a5;
}