:root {
  --bg-base: #f8fafc;
  --bg-header: rgba(255, 255, 255, 0.85);
  --bg-input: #ffffff;

  --card-bg: #ffffff;
  --card-bg-subtle: #f8fafc;
  --card-bg-hover: #f1f5f9;

  --border-subtle: #e2e8f0;
  --border-input: #e2e8f0;
  --border-hover: #cbd5e1;
  --border-accent: #c7d2fe;

  --accent: #6366f1;
  --accent-strong: #4f46e5;
  --accent-secondary: #a855f7;
  --accent-ink: #ffffff;
  --accent-soft: rgba(99, 102, 241, 0.08);
  --accent-soft-hover: rgba(99, 102, 241, 0.16);
  --accent-text: #4338ca;

  --text-primary: #0f172a;
  --text-secondary: #64748b;
  --text-muted: #94a3b8;
  --text-placeholder: #cbd5e1;

  --success: #10b981;
  --success-text: #047857;
  --success-soft: #d1fae5;
  --success-soft-strong: #a7f3d0;

  --error: #f43f5e;
  --error-text: #be123c;
  --error-soft: #ffe4e6;
  --error-soft-strong: #fecdd3;

  --warning-text: #b45309;
  --warning-soft: #fef3c7;
  --warning-soft-strong: #fde68a;

  --neutral-soft: #f1f5f9;

  --shadow-card: 0 1px 2px rgba(15,23,42,0.04), 0 12px 32px rgba(15,23,42,0.06);
  --shadow-card-hover: 0 4px 12px rgba(15,23,42,0.06), 0 20px 40px rgba(15,23,42,0.08);
}

* { box-sizing: border-box; }

body { margin: 0; font-family: Inter, system-ui, -apple-system, sans-serif; background: var(--bg-base); color: var(--text-primary); min-height: 100vh; display: flex; flex-direction: column; }
a { color: var(--accent-text); text-decoration: none; }

.site-header { position: sticky; top: 0; z-index: 100; background: var(--bg-header); backdrop-filter: blur(10px); border-bottom: 1px solid var(--border-subtle); }
.site-header-inner { max-width: 1360px; margin: 0 auto; padding: 14px 24px; display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.brand { display: inline-flex; align-items: center; gap: 8px; font-size: 19px; font-weight: 800; letter-spacing: -0.01em; background: linear-gradient(120deg, var(--accent), var(--accent-secondary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.brand-logo { width: 26px; height: 26px; border-radius: 7px; flex-shrink: 0; box-shadow: 0 0 0 1px var(--border-subtle); }
.h1-logo { width: 34px; height: 34px; border-radius: 9px; vertical-align: middle; margin-right: 10px; box-shadow: 0 0 0 1px var(--border-subtle); }
.nav { display: flex; align-items: center; gap: 4px; }
.nav a { padding: 8px 14px; border-radius: 8px; font-weight: 600; font-size: 14px; color: var(--text-secondary); transition: all 0.15s ease; }
.nav a.active { background: var(--accent-soft); color: var(--accent-strong); }
.nav a:hover { background: var(--card-bg-hover); color: var(--text-primary); }
.logout-form { display: inline; margin-left: 4px; }
.logout-btn { width: auto; padding: 8px 14px; background: none; box-shadow: none; color: var(--text-muted); font-weight: 600; font-size: 14px; }
.logout-btn:hover { color: var(--text-primary); background: var(--card-bg-hover); transform: none; box-shadow: none; }

.nav-toggle { display: none; width: auto; align-items: center; justify-content: center; padding: 6px 10px; background: none; border: 1px solid var(--border-subtle); border-radius: 8px; color: var(--text-primary); box-shadow: none; cursor: pointer; }
.nav-toggle:hover { background: var(--card-bg-hover); transform: none; box-shadow: none; }
.nav-toggle-icon { font-size: 20px; line-height: 1; }

@media (max-width: 860px) {
  .site-header-inner { flex-wrap: nowrap; }
  .nav-toggle { display: inline-flex; order: 2; }
  .nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    background: var(--card-bg);
    border-bottom: 1px solid var(--border-subtle);
    padding: 8px 16px 16px;
    box-shadow: var(--shadow-card);
  }
  .nav.open { display: flex; }
  .nav a { width: 100%; }
  .logout-form { margin: 4px 0 0; width: 100%; }
  .logout-btn { width: 100%; text-align: left; }
}

.container { padding: 40px 24px; flex: 1; display: flex; justify-content: center; align-items: flex-start; }
.content-wrapper { width: 100%; max-width: 1360px; }

label { display: block; margin-bottom: 8px; font-weight: 600; color: var(--text-secondary); font-size: 14px; }
input, textarea, button, select { width: 100%; border-radius: 10px; border: 1px solid var(--border-input); background: var(--bg-input); color: var(--text-primary); padding: 12px 14px; font-size: 15px; outline: none; transition: all 0.15s ease; box-sizing: border-box; font-family: inherit; }
input:focus, textarea:focus, select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
input:hover, textarea:hover, select:hover { border-color: var(--border-hover); }
/* Keep native controls readable and prevent flex layouts shrinking them. */
input[type="checkbox"], input[type="radio"] { width: 22px; min-width: 22px; height: 22px; min-height: 22px; flex: 0 0 22px; padding: 0; border-radius: 4px; box-sizing: border-box; vertical-align: middle; accent-color: var(--accent); cursor: pointer; }
label:has(input[type="checkbox"]), label:has(input[type="radio"]) { cursor: pointer; }
@media (max-width: 640px), (pointer: coarse) {
  input[type="checkbox"], input[type="radio"] { width: 26px; min-width: 26px; height: 26px; min-height: 26px; flex-basis: 26px; }
  label:has(input[type="checkbox"]), label:has(input[type="radio"]) { min-height: 44px; box-sizing: border-box; padding-top: 9px; padding-bottom: 9px; }
}
button { background: linear-gradient(120deg, var(--accent), var(--accent-secondary)); border: none; font-weight: 700; cursor: pointer; box-shadow: 0 8px 20px rgba(99,102,241,0.25); padding: 14px 20px; transition: all 0.2s ease; color: var(--accent-ink); }
button:hover { transform: translateY(-1px); box-shadow: 0 12px 28px rgba(99,102,241,0.32); }
button:active { transform: translateY(0); }

.flash-messages { display: flex; flex-direction: column; gap: 10px; margin-bottom: 20px; }
.flash { padding: 14px 16px; border-radius: 10px; font-size: 14px; line-height: 1.5; border-left: 3px solid var(--error); }
.flash-error { background: var(--error-soft); color: var(--error-text); }
.flash-success { background: var(--success-soft); color: var(--success-text); border-left-color: var(--success); }

.pagination { display: flex; align-items: center; justify-content: center; gap: 16px; margin-top: 24px; }
.pagination .page-link { width: auto; padding: 8px 16px; border-radius: 8px; border: 1px solid var(--border-subtle); background: var(--card-bg-subtle); color: var(--text-primary); font-weight: 600; font-size: 13px; text-decoration: none; box-shadow: none; }
.pagination .page-link:hover { border-color: var(--border-accent); background: var(--accent-soft); }
.pagination .page-link.disabled { color: var(--text-muted); cursor: default; pointer-events: none; opacity: 0.5; }
.pagination .page-info { font-size: 13px; color: var(--text-secondary); font-weight: 600; }