/* ==========================================================================
   CSP Front-end Portal — Mobile-first CSS
   Font: Inter (via Google Fonts) with system-ui fallback
   ========================================================================== */

:root {
  --csp-primary:      #1a56db;
  --csp-primary-dark: #1e429f;
  --csp-success:      #057a55;
  --csp-warning:      #9f580a;
  --csp-danger:       #c81e1e;
  --csp-bg:           #f3f4f6;
  --csp-surface:      #ffffff;
  --csp-border:       #e5e7eb;
  --csp-text:         #111928;
  --csp-text-muted:   #6b7280;
  --csp-radius:       10px;
  --csp-shadow:       0 1px 4px rgba(0,0,0,.10);
  --csp-font:         'Inter', system-ui, -apple-system, sans-serif;
}

/* ── Reset ─────────────────────────────────────────────────────────────────── */
.csp-portal *, .csp-portal *::before, .csp-portal *::after { box-sizing: border-box; }
.csp-portal { font-family: var(--csp-font); color: var(--csp-text); background: transparent; min-height: 100vh; }
.csp-portal input, .csp-portal select, .csp-portal textarea, .csp-portal button { font-family: inherit; }

/* ── Nav ────────────────────────────────────────────────────────────────────── */
.csp-nav {
  background: var(--csp-primary);
  color: #fff;
  display: flex;
  align-items: center;
  gap: 0;
  padding: 0 16px;
  min-height: 56px;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0,0,0,.15);
  flex-wrap: wrap;
}
.csp-nav-brand { font-weight: 700; font-size: 1rem; padding: 16px 16px 16px 0; white-space: nowrap; }
.csp-nav-tabs  { display: flex; flex: 1; flex-wrap: wrap; }
.csp-nav-tab {
  background: none;
  border: none;
  color: rgba(255,255,255,.75);
  padding: 18px 14px;
  cursor: pointer;
  font-size: .875rem;
  font-weight: 500;
  transition: color .15s, border-bottom-color .15s;
  border-bottom: 3px solid transparent;
}
.csp-nav-tab:hover       { color: #fff; }
.csp-nav-tab.active      { color: #fff; border-bottom-color: #fff; }
.csp-nav-user { display: flex; align-items: center; gap: 12px; margin-left: auto; padding: 8px 0; font-size: .875rem; }
.csp-nav-user span { opacity: .9; white-space: nowrap; }

/* ── Tab content ─────────────────────────────────────────────────────────── */
.csp-tab-content { display: none; padding: 20px 16px; max-width: 1100px; margin: 0 auto; }
.csp-tab-content.active { display: block; }

/* ── Page header ─────────────────────────────────────────────────────────── */
.csp-page-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.csp-page-header h2 { margin: 0; font-size: 1.25rem; }

/* ── Cards ──────────────────────────────────────────────────────────────── */
.csp-card {
  background: var(--csp-surface);
  border-radius: var(--csp-radius);
  box-shadow: var(--csp-shadow);
  border: 1px solid var(--csp-border);
  margin-bottom: 20px;
  overflow: hidden;
}
.csp-card-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--csp-border);
  background: #f9fafb;
}
.csp-card-header h1, .csp-card-header h2 { margin: 0 0 4px; font-size: 1.3rem; }
.csp-card-header p { margin: 0; color: var(--csp-text-muted); font-size: .875rem; }
.csp-form-card > form { padding: 24px; }
.csp-info-card { padding: 16px 20px; }
.csp-info-card p { margin: 4px 0; }

/* ── Auth layout ─────────────────────────────────────────────────────────── */
.csp-auth-wrap { display: flex; justify-content: center; align-items: flex-start; padding: 40px 16px; }
.csp-auth-card { width: 100%; max-width: 420px; }
.csp-auth-card form { padding: 24px; }
.csp-text-center { text-align: center; }

/* ── Filter bar ──────────────────────────────────────────────────────────── */
.csp-filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  background: var(--csp-surface);
  padding: 12px 16px;
  border-radius: var(--csp-radius);
  box-shadow: var(--csp-shadow);
  margin-bottom: 16px;
  border: 1px solid var(--csp-border);
}
.csp-filter-bar-sm { padding: 8px 12px; }

/* ── Form elements ───────────────────────────────────────────────────────── */
.csp-field { display: flex; flex-direction: column; gap: 4px; flex: 1 1 200px; }
.csp-field label { font-size: .8125rem; font-weight: 600; color: var(--csp-text); }
.csp-field input:not([type="checkbox"]):not([type="radio"]):not([type="file"]),
.csp-field select,
.csp-field textarea {
  border: 1px solid var(--csp-border);
  border-radius: 6px;
  padding: 9px 12px;
  font-size: .9375rem;
  color: var(--csp-text);
  background: #fff;
  transition: border-color .15s, box-shadow .15s;
  width: 100%;
  -webkit-appearance: none;
  appearance: none;
}
.csp-field select { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%236b7280' stroke-width='2' fill='none' stroke-linecap='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 12px center; padding-right: 32px; }
.csp-field input:not([type="checkbox"]):not([type="radio"]):not([type="file"]):focus,
.csp-field select:focus,
.csp-field textarea:focus {
  outline: none;
  border-color: var(--csp-primary);
  box-shadow: 0 0 0 3px rgba(26,86,219,.15);
}
.csp-field .csp-hint { font-size: .75rem; color: var(--csp-text-muted); }
.csp-input-sm { max-width: 100px; }
.csp-field-wide { flex: 2 1 300px; }
.csp-form-row { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 16px; }
.csp-form-actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 24px; padding-top: 16px; border-top: 1px solid var(--csp-border); }
.csp-section-title { font-weight: 700; font-size: .8125rem; text-transform: uppercase; letter-spacing: .06em; color: var(--csp-text-muted); margin: 24px 0 12px; padding-bottom: 6px; border-bottom: 1px solid var(--csp-border); }

/* ── Checkboxes ──────────────────────────────────────────────────────────── */
.csp-checkbox-group { display: flex; flex-wrap: wrap; gap: 8px; }
.csp-checkbox { display: flex; align-items: center; gap: 6px; font-size: .875rem; cursor: pointer; }
.csp-checkbox input[type="checkbox"] { width: 16px; height: 16px; accent-color: var(--csp-primary); }
.csp-consent-group { display: flex; flex-direction: column; gap: 10px; margin-bottom: 24px; }

/* ── Buttons ──────────────────────────────────────────────────────────────── */
.csp-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 20px;
  border-radius: 6px;
  font-size: .9375rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: background .15s, opacity .15s, box-shadow .15s;
  text-decoration: none;
  white-space: nowrap;
}
.csp-btn-primary { background: var(--csp-primary); color: #fff; }
.csp-btn-primary:hover { background: var(--csp-primary-dark); box-shadow: 0 2px 8px rgba(26,86,219,.35); }
.csp-btn-secondary { background: #f3f4f6; color: var(--csp-text); border: 1px solid var(--csp-border); }
.csp-btn-secondary:hover { background: #e5e7eb; }
.csp-btn-danger  { background: #fdf2f2; color: var(--csp-danger); border: 1px solid #fca5a5; }
.csp-btn-danger:hover  { background: #fee2e2; }
.csp-btn-ghost   { background: transparent; color: #fff; border: 1px solid rgba(255,255,255,.4); }
.csp-btn-ghost:hover  { background: rgba(255,255,255,.1); }
.csp-btn-sm      { padding: 6px 14px; font-size: .8125rem; }
.csp-btn-lg      { padding: 14px 28px; font-size: 1rem; }
.csp-btn-full    { width: 100%; }
.csp-btn:disabled { opacity: .55; cursor: not-allowed; }

/* ── Alerts ──────────────────────────────────────────────────────────────── */
.csp-alert {
  padding: 12px 16px;
  border-radius: 6px;
  font-size: .875rem;
  margin-bottom: 16px;
  border: 1px solid transparent;
}
.csp-alert-success { background: #f3faf7; color: var(--csp-success); border-color: #84e1bc; }
.csp-alert-error   { background: #fdf2f2; color: var(--csp-danger);  border-color: #f98080; }
.csp-alert-info    { background: #eff6ff; color: var(--csp-primary); border-color: #bfdbfe; }

/* ── Badges ──────────────────────────────────────────────────────────────── */
.csp-badge { display: inline-block; padding: 3px 10px; border-radius: 20px; font-size: .75rem; font-weight: 600; }
.csp-badge-success { background: #d1fae5; color: var(--csp-success); }
.csp-badge-warning { background: #fef3c7; color: var(--csp-warning); }
.csp-badge-danger  { background: #fee2e2; color: var(--csp-danger);  }
.csp-badge-info    { background: #dbeafe; color: var(--csp-primary); }

/* ── Shift cards ─────────────────────────────────────────────────────────── */
.csp-shifts-list { display: flex; flex-direction: column; gap: 10px; }
.csp-shift-card {
  background: var(--csp-surface);
  border: 1px solid var(--csp-border);
  border-radius: var(--csp-radius);
  padding: 14px 18px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 12px;
  align-items: center;
}
.csp-shift-date { font-weight: 700; font-size: 1rem; color: var(--csp-primary); text-align: center; }
.csp-shift-date small { display: block; font-weight: 400; color: var(--csp-text-muted); font-size: .75rem; }
.csp-shift-info h3 { margin: 0 0 2px; font-size: .9375rem; }
.csp-shift-info p  { margin: 0; font-size: .8125rem; color: var(--csp-text-muted); }
.csp-shift-time { font-size: .8125rem; font-weight: 600; color: var(--csp-text-muted); text-align: right; }
.csp-empty-state { text-align: center; padding: 48px 24px; color: var(--csp-text-muted); }

/* ── Log list ────────────────────────────────────────────────────────────── */
.csp-log-list { display: flex; flex-direction: column; gap: 10px; }
.csp-log-card {
  background: var(--csp-surface);
  border: 1px solid var(--csp-border);
  border-radius: var(--csp-radius);
  padding: 14px 18px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}
.csp-log-card-date { font-weight: 700; min-width: 100px; color: var(--csp-primary); }
.csp-log-card-info { flex: 1; font-size: .875rem; }
.csp-log-card-info span { display: block; }
.csp-log-card-hours { font-weight: 700; font-size: 1.1rem; }
.csp-log-card-actions { display: flex; gap: 8px; }

/* ── Hours preview ───────────────────────────────────────────────────────── */
.csp-hours-preview {
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  border-radius: 6px;
  padding: 12px 16px;
  margin-bottom: 16px;
  font-size: .9375rem;
}

/* ── File upload ─────────────────────────────────────────────────────────── */
.csp-upload-area { position: relative; margin-bottom: 12px; }
.csp-file-input  { position: absolute; inset: 0; opacity: 0; cursor: pointer; width: 100%; height: 100%; z-index: 2; }
.csp-upload-label {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 24px;
  border: 2px dashed var(--csp-border);
  border-radius: var(--csp-radius);
  text-align: center;
  cursor: pointer;
  transition: border-color .15s, background .15s;
  font-size: .875rem;
  color: var(--csp-text-muted);
}
.csp-upload-label:hover { border-color: var(--csp-primary); background: #eff6ff; }
.csp-upload-label .csp-upload-icon { font-size: 2rem; }
.csp-file-list { display: flex; flex-direction: column; gap: 6px; }
.csp-file-item {
  display: flex;
  align-items: center;
  gap: 8px;
  background: #f9fafb;
  border: 1px solid var(--csp-border);
  border-radius: 6px;
  padding: 8px 12px;
  font-size: .8125rem;
}
.csp-file-item-name { flex: 1; font-weight: 500; }
.csp-file-item-size { color: var(--csp-text-muted); }

/* ── Registration page ────────────────────────────────────────────────────── */
.csp-registration .csp-card { max-width: 860px; margin: 40px auto; }
.csp-registration .csp-card-header { text-align: center; }
.csp-registration form { padding: 24px 32px; }
.csp-login-link { text-align: center; margin-top: 16px; font-size: .875rem; color: var(--csp-text-muted); }
.csp-login-link a { color: var(--csp-primary); font-weight: 600; text-decoration: none; }

/* ── Topbar (job seeker status page) ─────────────────────────────────────── */
.csp-topbar { display: flex; justify-content: space-between; align-items: center; background: var(--csp-primary); color: #fff; padding: 12px 20px; font-size: .875rem; }
.csp-topbar-name { font-weight: 600; }

/* ── Loader ──────────────────────────────────────────────────────────────── */
.csp-loader { text-align: center; padding: 32px; color: var(--csp-text-muted); }
.csp-loader::after { content: ''; display: inline-block; width: 20px; height: 20px; border: 3px solid var(--csp-border); border-top-color: var(--csp-primary); border-radius: 50%; animation: csp-spin .7s linear infinite; vertical-align: middle; margin-left: 8px; }
@keyframes csp-spin { to { transform: rotate(360deg); } }

/* ── Responsive ──────────────────────────────────────────────────────────── */
@media (max-width: 640px) {
  .csp-nav { padding: 0 12px; }
  .csp-nav-brand { font-size: .875rem; }
  .csp-nav-tab { padding: 14px 10px; font-size: .8125rem; }
  .csp-nav-user span { display: none; }
  .csp-tab-content { padding: 16px 12px; }
  .csp-registration form { padding: 16px; }
  .csp-shift-card { grid-template-columns: 1fr; }
  .csp-form-row { flex-direction: column; }
  .csp-field { flex: 1 1 100%; }
  .csp-btn-lg { padding: 12px 20px; }
}

@media (min-width: 768px) {
  .csp-tab-content { padding: 24px 32px; }
}