:root,
[data-theme="dark"] {
  --font-body: "Manrope", sans-serif;
  --font-heading: "Space Grotesk", sans-serif;
  --font-accent: "Space Grotesk", sans-serif;
  --bg: #08090d;
  --bg-card: rgba(18, 20, 31, 0.94);
  --text: #f5f7fb;
  --text-muted: #9aa3b2;
  --border: rgba(148, 163, 184, 0.18);
  --accent: #ff4d5a;
  --accent-hover: #ff6b73;
  --accent-2: #8b5cf6;
}

[data-theme="light"] {
  --bg: #f3f4f8;
  --bg-card: rgba(255, 255, 255, 0.94);
  --text: #0a0e1a;
  --text-muted: #4b5563;
  --border: rgba(0, 0, 0, 0.10);
  --accent: #e6354a;
  --accent-hover: #ff4d5a;
  --accent-2: #7c3aed;
}

[data-theme="manhwa"] {
  --bg: #0b0816;
  --bg-card: rgba(20, 10, 35, 0.94);
  --text: #f5f0ff;
  --text-muted: #a78bca;
  --border: rgba(167, 139, 202, 0.18);
  --accent: #c084fc;
  --accent-hover: #d8b4fe;
  --accent-2: #f472b6;
}

[data-theme="kawaii"] {
  --bg: #fff0f5;
  --bg-card: rgba(255, 245, 250, 0.96);
  --text: #3b1a2e;
  --text-muted: #9d5e7b;
  --border: rgba(236, 72, 153, 0.15);
  --accent: #ec4899;
  --accent-hover: #f472b6;
  --accent-2: #a855f7;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
  margin: 0;
}

body {
  font-family: var(--font-body);
  color: var(--text);
  background:
    radial-gradient(circle at 14% 20%, rgba(255, 77, 90, 0.1), transparent 26%),
    radial-gradient(circle at 86% 10%, rgba(91, 79, 230, 0.12), transparent 24%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg) 60%, var(--bg) 100%);
  background-attachment: fixed;
  display: flex;
  flex-direction: column;
}

[data-theme="light"] body {
  background:
    radial-gradient(circle at 14% 20%, rgba(230, 53, 74, 0.06), transparent 26%),
    radial-gradient(circle at 86% 10%, rgba(124, 58, 237, 0.07), transparent 24%),
    linear-gradient(180deg, #f3f4f8 0%, #eff2f7 60%, #f3f4f8 100%);
}

[data-theme="manhwa"] body {
  background:
    radial-gradient(circle at 14% 20%, rgba(192, 132, 252, 0.12), transparent 26%),
    radial-gradient(circle at 86% 10%, rgba(244, 114, 182, 0.10), transparent 24%),
    linear-gradient(180deg, #0b0816 0%, #0e0a1c 60%, #0b0816 100%);
}

[data-theme="kawaii"] body {
  background:
    radial-gradient(circle at 14% 20%, rgba(236, 72, 153, 0.08), transparent 26%),
    radial-gradient(circle at 86% 10%, rgba(168, 85, 247, 0.07), transparent 24%),
    linear-gradient(180deg, #fff0f5 0%, #fdf2f8 60%, #fff0f5 100%);
}

/* ── layout ── */
.sp-shell {
  flex: 1;
  max-width: 780px;
  margin: 0 auto;
  padding: 52px 24px 40px;
  width: 100%;
}

/* ── back link ── */
.sp-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 500;
  margin-bottom: 2.2rem;
  transition: color 0.2s;
}

.sp-back:hover {
  color: var(--accent);
}

/* ── hero / page header ── */
.sp-hero {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 2.8rem;
}

.sp-mark {
  width: 54px;
  height: 54px;
  display: grid;
  place-items: center;
  flex-shrink: 0;
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(255, 77, 90, 0.22), rgba(139, 92, 246, 0.18));
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 18px 30px -20px rgba(255, 77, 90, 0.5);
  font-family: var(--font-accent);
  font-size: 1.1rem;
  font-weight: 700;
}

.sp-hero-info {
  min-width: 0;
}

.sp-hero-title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: clamp(1.55rem, 4vw, 2.1rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.1;
}

.sp-hero-sub {
  margin: 0.35rem 0 0;
  color: var(--text-muted);
  font-size: 0.88rem;
}

/* ── content card section ── */
.sp-section {
  margin-bottom: 1.5rem;
  padding: 1.8rem;
  border-radius: 20px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  backdrop-filter: blur(14px);
}

.sp-section h2 {
  margin: 0 0 1rem;
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 10px;
}

.sp-section h2::before {
  content: "";
  display: inline-block;
  width: 3px;
  height: 1em;
  border-radius: 2px;
  background: var(--accent);
  flex-shrink: 0;
}

.sp-section p {
  margin: 0 0 0.75rem;
  color: var(--text-muted);
  line-height: 1.75;
  font-size: 0.94rem;
}

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

/* ── notice box ── */
.sp-notice {
  margin-top: 0.75rem;
  padding: 1rem 1.2rem;
  border-radius: 14px;
  background: rgba(255, 77, 90, 0.07);
  border: 1px solid rgba(255, 77, 90, 0.22);
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.7;
}

/* ── feedback form ── */
.sp-form {
  display: grid;
  gap: 1.25rem;
}

.sp-field {
  display: grid;
  gap: 0.5rem;
}

.sp-label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-muted);
}

.sp-input,
.sp-textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 0.85rem 1rem;
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
}

[data-theme="light"] .sp-input,
[data-theme="light"] .sp-textarea,
[data-theme="kawaii"] .sp-input,
[data-theme="kawaii"] .sp-textarea {
  background: rgba(0, 0, 0, 0.03);
}

[data-theme="light"] .sp-input:focus,
[data-theme="light"] .sp-textarea:focus,
[data-theme="kawaii"] .sp-input:focus,
[data-theme="kawaii"] .sp-textarea:focus {
  background: rgba(0, 0, 0, 0.04);
}

.sp-textarea {
  min-height: 170px;
  resize: vertical;
  line-height: 1.6;
}

.sp-input::placeholder,
.sp-textarea::placeholder {
  color: rgba(154, 163, 178, 0.65);
}

.sp-input:focus,
.sp-textarea:focus {
  outline: none;
  border-color: rgba(255, 77, 90, 0.72);
  box-shadow: 0 0 0 4px rgba(255, 77, 90, 0.13);
  background: rgba(255, 255, 255, 0.04);
}

.sp-btn {
  width: 100%;
  min-height: 52px;
  border: 0;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--accent), #ff6877);
  color: white;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 18px 30px -18px rgba(255, 77, 90, 0.7);
  transition: transform 0.2s, box-shadow 0.2s, opacity 0.2s;
}

.sp-btn:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 22px 36px -16px rgba(255, 77, 90, 0.9);
}

.sp-btn:disabled {
  opacity: 0.65;
  cursor: not-allowed;
  box-shadow: none;
}

/* ── inline message (success / error) ── */
.sp-msg {
  padding: 0.9rem 1.1rem;
  border-radius: 14px;
  font-size: 0.92rem;
  line-height: 1.55;
  display: none;
}

.sp-msg.is-success {
  display: block;
  background: rgba(34, 197, 94, 0.1);
  border: 1px solid rgba(34, 197, 94, 0.28);
  color: #8ce8a9;
}

.sp-msg.is-error {
  display: block;
  background: rgba(255, 77, 90, 0.1);
  border: 1px solid rgba(255, 77, 90, 0.28);
  color: #ff9ca5;
}

/* ── shared site footer ── */
.site-footer {
  padding: 1.5rem 24px 2rem;
  border-top: 1px solid var(--border);
  text-align: center;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0 0 0.6rem;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.2rem 1.5rem;
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.86rem;
  transition: color 0.2s;
}

.footer-links a:hover {
  color: var(--accent);
}

.footer-copy {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.82rem;
}

@media (max-width: 640px) {
  .sp-shell {
    padding: 32px 16px 32px;
  }

  .sp-section {
    padding: 1.25rem;
    border-radius: 16px;
  }

  .sp-mark {
    width: 46px;
    height: 46px;
    border-radius: 14px;
    font-size: 0.95rem;
  }
}