/* ── Reset & Base ──────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --bg: #f5f5f7;
  --card: #ffffff;
  --card-hover: #fafafa;
  --accent: #0071e3;
  --accent-hover: #0077ED;
  --accent-dim: #005bb5;
  --accent-soft: rgba(0, 113, 227, .08);
  --text: #1d1d1f;
  --text-dim: #6e6e73;
  --text-muted: #86868b;
  --border: rgba(0, 0, 0, .08);
  --border-strong: rgba(0, 0, 0, .12);
  --danger: #ff3b30;
  --success: #34c759;
  --warning: #ff9500;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, .04);
  --shadow-md: 0 2px 12px rgba(0, 0, 0, .06);
  --shadow-lg: 0 4px 24px rgba(0, 0, 0, .08);
  --transition: .2s cubic-bezier(.25, .1, .25, 1);
}
html { font-size: 16px; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  min-height: 100vh;
  line-height: 1.5;
  letter-spacing: -0.01em;
}
a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent-hover); }

/* ── Sidebar ──────────────────────────────────────── */
.sidebar {
  position: fixed; top: 0; left: 0; width: 240px; height: 100vh;
  background: rgba(255, 255, 255, .72);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column; z-index: 100;
}
.sidebar-logo {
  padding: 1.5rem 1.25rem 1.25rem;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.02em;
}
.sidebar-nav { flex: 1; padding: .25rem 0; overflow-y: auto; }
.sidebar-nav a {
  display: flex; align-items: center; gap: .65rem;
  padding: .5rem 1.25rem;
  color: var(--text-dim);
  font-size: .82rem;
  font-weight: 400;
  text-decoration: none;
  transition: all var(--transition);
  border-left: 2px solid transparent;
  margin: 1px 0;
  border-radius: 0;
}
.sidebar-nav a:hover {
  color: var(--text);
  background: rgba(0, 0, 0, .03);
}
.sidebar-nav a.active {
  color: var(--accent);
  background: var(--accent-soft);
  border-left-color: var(--accent);
  font-weight: 500;
}
.nav-icon { font-size: .95rem; width: 1.4rem; text-align: center; opacity: .8; }
.sidebar-footer {
  padding: .85rem 1.25rem;
  border-top: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
}
.sidebar-user { font-size: .78rem; color: var(--text-muted); font-weight: 400; }
.sidebar .btn-logout {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: .25rem .65rem;
  border-radius: 980px;
  cursor: pointer;
  font-size: .72rem;
  font-weight: 500;
  transition: all var(--transition);
}
.sidebar .btn-logout:hover {
  border-color: var(--danger);
  color: var(--danger);
  background: rgba(255, 59, 48, .05);
}
.nav-section {
  padding: .75rem 1.25rem .25rem;
  font-size: .62rem;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--text-muted);
  font-weight: 600;
  margin-top: .25rem;
}
.nav-section:first-child { margin-top: 0; }

/* ── Layout ───────────────────────────────────────── */
body.has-sidebar { padding-left: 240px; }
.container { max-width: 980px; margin: 0 auto; padding: 2.5rem 3rem; }
.page-title {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 2rem;
  letter-spacing: -0.025em;
  color: var(--text);
}

/* ── Cards ────────────────────────────────────────── */
.card {
  background: var(--card);
  border: none;
  border-radius: var(--radius);
  padding: 1.75rem;
  margin-bottom: 1.25rem;
  transition: box-shadow var(--transition);
  box-shadow: var(--shadow-sm);
}
.card:hover { box-shadow: var(--shadow-md); }
.card-title {
  font-size: .95rem;
  font-weight: 600;
  margin-bottom: 1.25rem;
  color: var(--text);
  letter-spacing: -0.01em;
}

/* ── Form ─────────────────────────────────────────── */
.form-group { margin-bottom: 1.35rem; }
.form-group label {
  display: block;
  font-size: .8rem;
  color: var(--text-dim);
  margin-bottom: .45rem;
  font-weight: 500;
  letter-spacing: -0.005em;
}
input[type="text"], input[type="password"], input[type="datetime-local"],
input[type="number"], input[type="time"], textarea, select {
  width: 100%;
  padding: .65rem .9rem;
  background: var(--card);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: .88rem;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
  box-sizing: border-box;
  font-family: inherit;
  letter-spacing: -0.005em;
}
input:focus, textarea:focus, select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0, 113, 227, .12);
}
textarea { resize: vertical; min-height: 100px; line-height: 1.5; }

/* ── Custom Checkboxes ────────────────────────────── */
input[type="checkbox"] {
  appearance: none; -webkit-appearance: none;
  width: 20px; height: 20px; min-width: 20px;
  border: 1.5px solid var(--border-strong);
  border-radius: 5px;
  background: var(--card);
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
  vertical-align: middle; margin: 0;
}
input[type="checkbox"]:checked {
  background: var(--accent);
  border-color: var(--accent);
}
input[type="checkbox"]:checked::after {
  content: '✓'; color: #fff; font-size: 13px; font-weight: 600;
  position: absolute; top: 50%; left: 50%;
  transform: translate(-50%, -50%);
}
input[type="checkbox"]:hover { border-color: var(--accent); }
label:has(input[type="checkbox"]) {
  display: inline-flex; align-items: center; gap: .5rem;
  cursor: pointer; font-size: .88rem; user-select: none;
}

/* ── Buttons ──────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: .45rem;
  padding: .6rem 1.25rem;
  border: none;
  border-radius: 980px;
  font-size: .84rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  letter-spacing: -0.005em;
}
.btn-group { display: flex; gap: .6rem; flex-wrap: wrap; }
.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 1px 2px rgba(0, 113, 227, .2);
}
.btn-primary:hover {
  background: var(--accent-hover);
  box-shadow: 0 2px 8px rgba(0, 113, 227, .3);
  transform: scale(1.01);
}
.btn-secondary {
  background: rgba(0, 0, 0, .04);
  color: var(--text);
  border: none;
}
.btn-secondary:hover { background: rgba(0, 0, 0, .08); }
.btn-danger {
  background: var(--danger);
  color: #fff;
  box-shadow: 0 1px 2px rgba(255, 59, 48, .2);
}
.btn-danger:hover { background: #e0342b; }
.btn-success {
  background: var(--success);
  color: #fff;
  box-shadow: 0 1px 2px rgba(52, 199, 89, .2);
}
.btn:disabled { opacity: .4; cursor: not-allowed; transform: none; }

/* ── Checkboxes (SNS) ────────────────────────────── */
.platforms-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: .5rem;
}
.platform-check {
  display: flex; align-items: center; gap: .5rem; padding: .55rem .85rem;
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius-sm);
  cursor: pointer; transition: all var(--transition); font-size: .82rem;
}
.platform-check:hover { border-color: var(--accent); background: var(--accent-soft); }
.platform-check input:checked + span { color: var(--accent); font-weight: 600; }
.platform-check input { accent-color: var(--accent); }

/* ── Dropzone ─────────────────────────────────────── */
.dropzone {
  border: 2px dashed var(--border-strong); border-radius: var(--radius); padding: 2.5rem;
  text-align: center; color: var(--text-muted); cursor: pointer; transition: all var(--transition);
}
.dropzone:hover, .dropzone.dragover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-soft);
}
.dropzone .icon { font-size: 2rem; margin-bottom: .5rem; }
.dropzone .file-info { margin-top: .75rem; color: var(--success); font-size: .82rem; }

/* ── Table ────────────────────────────────────────── */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: .7rem 1rem; text-align: left; border-bottom: 1px solid var(--border); font-size: .82rem; }
th {
  color: var(--text-muted);
  font-weight: 600;
  font-size: .72rem;
  text-transform: uppercase;
  letter-spacing: .05em;
}
td { color: var(--text); }
tr:hover td { background: rgba(0, 0, 0, .015); }

/* ── Badges ───────────────────────────────────────── */
.badge {
  display: inline-block; padding: .15rem .55rem; border-radius: 980px;
  font-size: .72rem; font-weight: 600;
}
.badge-success { background: rgba(52, 199, 89, .12); color: var(--success); }
.badge-warning { background: rgba(255, 149, 0, .12); color: var(--warning); }
.badge-danger { background: rgba(255, 59, 48, .12); color: var(--danger); }
.badge-info { background: var(--accent-soft); color: var(--accent); }
.badge-sns {
  display: inline-block; padding: .15rem .5rem; border-radius: 980px;
  font-size: .68rem; font-weight: 600; background: var(--accent-soft); color: var(--accent); margin: .1rem;
}

/* ── Toast ────────────────────────────────────────── */
.toast-container { position: fixed; top: 1.25rem; right: 1.25rem; z-index: 9999; display: flex; flex-direction: column; gap: .5rem; }
.toast {
  padding: .75rem 1.25rem; border-radius: var(--radius); font-size: .82rem; font-weight: 500;
  animation: slideIn .35s cubic-bezier(.25, .1, .25, 1); min-width: 260px;
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
}
.toast-success { background: rgba(255, 255, 255, .88); color: var(--success); border: 1px solid rgba(52, 199, 89, .2); box-shadow: var(--shadow-lg); }
.toast-error { background: rgba(255, 255, 255, .88); color: var(--danger); border: 1px solid rgba(255, 59, 48, .2); box-shadow: var(--shadow-lg); }
.toast-info { background: rgba(255, 255, 255, .88); color: var(--accent); border: 1px solid rgba(0, 113, 227, .2); box-shadow: var(--shadow-lg); }
@keyframes slideIn { from { transform: translateY(-12px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }

/* ── Login Page ───────────────────────────────────── */
.login-wrap {
  display: flex; align-items: center; justify-content: center; min-height: 100vh;
  background: linear-gradient(180deg, #f5f5f7 0%, #e8e8ed 100%);
}
.login-box {
  background: rgba(255, 255, 255, .88);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2.75rem 2.5rem;
  width: 100%; max-width: 380px;
  box-shadow: var(--shadow-lg);
}
.login-box h1 {
  text-align: center;
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: .35rem;
  color: var(--text);
  letter-spacing: -0.02em;
}
.login-box p { text-align: center; color: var(--text-muted); font-size: .82rem; margin-bottom: 1.75rem; }

/* ── Stats Grid ───────────────────────────────────── */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 1.75rem; }
.stat-card {
  background: var(--card);
  border: none;
  border-radius: var(--radius);
  padding: 1.35rem;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition);
}
.stat-card:hover { box-shadow: var(--shadow-md); }
.stat-card .stat-num { font-size: 2rem; font-weight: 700; color: var(--accent); letter-spacing: -0.02em; }
.stat-card .stat-label { font-size: .78rem; color: var(--text-muted); margin-top: .3rem; }

/* ── Profile Cards ────────────────────────────────── */
.profiles-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: .75rem; }
.profile-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: .75rem;
  display: flex; align-items: center; gap: .6rem; font-size: .82rem;
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transition: all var(--transition);
}
.profile-card:hover { border-color: var(--accent); box-shadow: var(--shadow-md); transform: translateY(-1px); }
.profile-card .platform-icon { font-size: 1.2rem; }

/* ── Preview ──────────────────────────────────────── */
.preview-box {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1rem;
  margin-top: 1rem;
  min-height: 80px;
  white-space: pre-wrap;
  font-size: .86rem;
  color: var(--text-dim);
  line-height: 1.55;
}

/* ── Responsive ───────────────────────────────────── */
.hamburger-btn {
  display: none; position: fixed; top: .75rem; left: .75rem; z-index: 1100;
  background: rgba(255, 255, 255, .88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: 980px;
  width: 40px; height: 40px; font-size: 1.2rem; cursor: pointer;
  box-shadow: var(--shadow-md); color: var(--text);
  align-items: center; justify-content: center;
}
.sidebar-overlay {
  display: none; position: fixed; inset: 0; background: rgba(0, 0, 0, .3);
  z-index: 999; opacity: 0; transition: opacity .25s;
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);
}
.sidebar-overlay.active { display: block; opacity: 1; }

@media (max-width: 768px) {
  .hamburger-btn { display: flex; }
  .sidebar {
    transform: translateX(-100%); transition: transform .3s cubic-bezier(.25, .1, .25, 1);
    z-index: 1000;
    width: 260px;
  }
  .sidebar.open { transform: translateX(0); box-shadow: var(--shadow-lg); }
  body.has-sidebar { padding-left: 0; }
  .container { padding: 1.25rem; padding-top: 3.75rem; }
  .platforms-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .page-title { margin-top: 0; font-size: 1.4rem; }
}

/* ── Misc ─────────────────────────────────────────── */
.loading {
  display: inline-block; width: 18px; height: 18px;
  border: 2px solid var(--border); border-top-color: var(--accent);
  border-radius: 50%; animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.empty-state { text-align: center; padding: 2.75rem 1.5rem; color: var(--text-muted); font-size: .9rem; }
.page-desc { color: var(--text-muted); font-size: .84rem; margin: -.75rem 0 1.75rem; line-height: 1.55; }
.help-text { font-size: .76rem; color: var(--text-muted); margin-top: .3rem; line-height: 1.45; }
.help-text a { color: var(--accent); }
.mt-1 { margin-top: 1rem; }
.mb-1 { margin-bottom: 1rem; }
.text-dim { color: var(--text-dim); }
.text-sm { font-size: .82rem; }

/* ── Prompt Cards ─────────────────────────────────── */
.prompt-card {
  background: var(--card);
  border: none;
  border-radius: var(--radius);
  padding: 1.25rem;
  margin-bottom: .75rem;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition);
}
.prompt-card:hover { box-shadow: var(--shadow-md); }
.prompt-card .prompt-header {
  display: flex; align-items: center; justify-content: space-between; margin-bottom: .75rem;
}
.prompt-card .prompt-platform { font-weight: 600; font-size: .9rem; display: flex; align-items: center; gap: .4rem; }
.prompt-card textarea { min-height: 80px; }

/* ── Profile Page Cards ───────────────────────────── */
.profile-page-card {
  background: var(--card);
  border: none;
  border-radius: var(--radius);
  padding: 1.25rem;
  display: flex; align-items: center; gap: 1rem;
  cursor: pointer;
  transition: all var(--transition);
  box-shadow: var(--shadow-sm);
}
.profile-page-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.profile-page-card .profile-icon { font-size: 2rem; }
.profile-page-card .profile-info h3 { font-size: .95rem; font-weight: 600; color: var(--text); margin-bottom: .15rem; letter-spacing: -0.01em; }
.profile-page-card .profile-info p { font-size: .78rem; color: var(--text-muted); }

/* ── Prompt Hint ──────────────────────────────────── */
.prompt-hint {
  background: var(--accent-soft);
  border: none;
  border-radius: var(--radius-sm);
  padding: .65rem .9rem;
  margin-top: .5rem;
  font-size: .78rem;
  color: var(--accent-dim);
}
.prompt-hint strong { font-weight: 600; }

/* ── Suggestion Cards ─────────────────────────────── */
.suggestion-card {
  background: var(--card);
  border: none;
  border-radius: var(--radius);
  padding: 1.1rem;
  margin-bottom: .75rem;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition);
}
.suggestion-card:hover { box-shadow: var(--shadow-md); }
.suggestion-header { display: flex; gap: .5rem; align-items: center; margin-bottom: .75rem; }
.suggestion-analysis { margin-bottom: .75rem; font-size: .86rem; }
.suggestion-analysis p { margin-top: .3rem; color: var(--text-dim); line-height: 1.55; white-space: pre-wrap; }
.suggestion-prompt { margin-bottom: .75rem; }

/* ── Settings form ───────────────────────────────── */
.api-key-section input[type="text"],
.api-key-section input[type="password"],
.api-key-section input[type="email"] {
  width: 100%;
  min-height: 2.5rem;
  font-size: .86rem;
}

/* ── Summary (Dashboard inline) ──────────────────── */
.summary-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 1.75rem; }
.summary-card {
  padding: 1.35rem;
  border-radius: var(--radius);
  background: var(--card);
  border: none;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition);
}
.summary-card:hover { box-shadow: var(--shadow-md); }
.summary-value { font-size: 2rem; font-weight: 700; line-height: 1; letter-spacing: -0.02em; }
.summary-label { font-size: .8rem; color: var(--text-muted); margin-top: .3rem; }

/* ── Selection / Focus ───────────────────────────── */
::selection { background: rgba(0, 113, 227, .15); }
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(0, 0, 0, .12); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(0, 0, 0, .2); }