/* ============================================
   STAFF PORTAL — Dark Zinc Aesthetic
   Standalone styles, no CMS dependency
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

/* ── Design Tokens ─────────────────────────── */
:root {
  /* Dark zinc palette (always dark — no light mode) */
  --bg-base:       #09090b;
  --bg-card:       #18181b;
  --bg-elevated:   #1c1c1f;
  --bg-muted:      #27272a;
  --border:        #27272a;
  --border-subtle: #3f3f46;

  --text-primary:   #fafafa;
  --text-secondary: #a1a1aa;
  --text-muted:     #71717a;

  --accent:        #2563eb;
  --accent-hover:  #1d4ed8;
  --accent-muted:  rgba(37, 99, 235, 0.15);

  --success:       #22c55e;
  --success-bg:    rgba(34, 197, 94, 0.12);
  --success-text:  #4ade80;

  --danger:        #ef4444;
  --danger-hover:  #dc2626;
  --danger-bg:     rgba(239, 68, 68, 0.12);
  --danger-text:   #f87171;

  --warning:       #f59e0b;
  --warning-bg:    rgba(245, 158, 11, 0.12);
  --warning-text:  #fbbf24;

  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-full: 9999px;

  --transition: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 300ms ease;

  --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.3), 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-lifted: 0 4px 16px rgba(0, 0, 0, 0.5);

  --z-toast: 3000;
}

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

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.5;
  color: var(--text-primary);
  background: var(--bg-base);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ── Layout ────────────────────────────────── */
.sp-app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ── Login Screen ──────────────────────────── */
.sp-login-screen {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  min-height: 100vh;
}

.sp-login-card {
  width: 100%;
  max-width: 400px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2rem;
  box-shadow: var(--shadow-lifted);
}

.sp-login-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 2rem;
}

.sp-login-logo-mark {
  width: 32px;
  height: 32px;
  background: var(--accent);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.sp-login-logo-mark svg {
  width: 18px;
  height: 18px;
  color: #fff;
}

.sp-login-logo-text {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.sp-login-heading {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  margin-bottom: 0.375rem;
}

.sp-login-subtext {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

/* Code input */
.sp-code-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.sp-code-input {
  width: 100%;
  padding: 0.875rem 1rem;
  font-family: var(--font-mono);
  font-size: 1.375rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-primary);
  background: var(--bg-base);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: border-color var(--transition), box-shadow var(--transition);
  text-align: center;
  appearance: none;
  -webkit-appearance: none;
}

.sp-code-input::placeholder {
  color: var(--text-muted);
  letter-spacing: 0.1em;
  font-size: 1rem;
}

.sp-code-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-muted);
}

/* Login error */
.sp-login-error {
  display: none;
  margin-top: 0.75rem;
  padding: 0.625rem 0.875rem;
  background: var(--danger-bg);
  border: 1px solid rgba(239, 68, 68, 0.25);
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  color: var(--danger-text);
  line-height: 1.4;
}

.sp-login-error.is-visible {
  display: block;
}

/* Login button */
.sp-btn-login {
  width: 100%;
  margin-top: 1.25rem;
  padding: 0.875rem 1.5rem;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  color: #fff;
  background: var(--accent);
  border: 1px solid var(--accent);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition), opacity var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.sp-btn-login:hover:not(:disabled) {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}

.sp-btn-login:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

/* ── Main App Screen ───────────────────────── */
.sp-main-screen {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Header */
.sp-header {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  padding: 0 1rem;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  position: sticky;
  top: 0;
  z-index: 100;
}

.sp-header-left {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  min-width: 0;
}

.sp-header-logo {
  width: 26px;
  height: 26px;
  background: var(--accent);
  border-radius: 5px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.sp-header-logo svg {
  width: 14px;
  height: 14px;
  color: #fff;
}

.sp-header-name {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sp-btn-logout {
  padding: 0.4rem 0.875rem;
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: transparent;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
  flex-shrink: 0;
}

.sp-btn-logout:hover {
  color: var(--text-primary);
  border-color: var(--text-muted);
  background: var(--bg-muted);
}

/* Tab navigation */
.sp-tabs {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  display: flex;
  padding: 0 1rem;
}

.sp-tab {
  position: relative;
  padding: 0.875rem 1rem;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: none;
  border: none;
  cursor: pointer;
  transition: color var(--transition);
  white-space: nowrap;
}

.sp-tab::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent);
  border-radius: 2px 2px 0 0;
  transform: scaleX(0);
  transition: transform var(--transition);
}

.sp-tab:hover {
  color: var(--text-primary);
}

.sp-tab.is-active {
  color: var(--text-primary);
}

.sp-tab.is-active::after {
  transform: scaleX(1);
}

/* Tab badge */
.sp-tab-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  margin-left: 6px;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-muted);
  border-radius: var(--radius-full);
  vertical-align: middle;
}

/* Content area */
.sp-content {
  flex: 1;
  padding: 1.25rem 1rem;
  max-width: 720px;
  width: 100%;
  margin: 0 auto;
}

/* Tab panels */
.sp-panel {
  display: none;
}

.sp-panel.is-active {
  display: block;
}

/* ── Shift Cards ───────────────────────────── */
.sp-date-group {
  margin-bottom: 1.75rem;
}

.sp-date-group:last-child {
  margin-bottom: 0;
}

.sp-date-heading {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0 0 0.625rem 0;
  margin-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.sp-shift-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1rem;
  margin-bottom: 0.625rem;
  transition: border-color var(--transition);
}

.sp-shift-card:last-child {
  margin-bottom: 0;
}

.sp-shift-card:hover {
  border-color: var(--border-subtle);
}

.sp-shift-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.625rem;
}

.sp-shift-time {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--text-primary);
  letter-spacing: 0.02em;
  white-space: nowrap;
  flex-shrink: 0;
}

/* Status badge */
.sp-status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  flex-shrink: 0;
}

.sp-status-badge.status-confirmed {
  background: var(--success-bg);
  color: var(--success-text);
  border: 1px solid rgba(34, 197, 94, 0.2);
}

.sp-status-badge.status-open {
  background: var(--warning-bg);
  color: var(--warning-text);
  border: 1px dashed rgba(245, 158, 11, 0.4);
}

/* Shift meta */
.sp-shift-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.875rem;
}

.sp-position-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 500;
  background: var(--bg-muted);
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.sp-position-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  flex-shrink: 0;
}

.sp-meta-item {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.sp-meta-item svg {
  width: 13px;
  height: 13px;
  flex-shrink: 0;
  opacity: 0.7;
}

.sp-meta-separator {
  color: var(--border-subtle);
  font-size: 0.75rem;
}

/* Shift actions */
.sp-shift-actions {
  display: flex;
  gap: 0.5rem;
  justify-content: flex-end;
}

/* Buttons */
.sp-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.375rem;
  padding: 0.5rem 1rem;
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
  border: 1px solid transparent;
  white-space: nowrap;
}

.sp-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.sp-btn svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

.sp-btn-accept {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.sp-btn-accept:hover:not(:disabled) {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}

.sp-btn-cancel {
  background: transparent;
  color: var(--danger-text);
  border-color: rgba(239, 68, 68, 0.35);
}

.sp-btn-cancel:hover:not(:disabled) {
  background: var(--danger-bg);
  border-color: var(--danger);
}

/* ── Empty State ───────────────────────────── */
.sp-empty {
  text-align: center;
  padding: 3.5rem 1rem;
  color: var(--text-muted);
}

.sp-empty-icon {
  width: 44px;
  height: 44px;
  margin: 0 auto 1rem;
  opacity: 0.35;
}

.sp-empty-title {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 0.375rem;
}

.sp-empty-text {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ── Loading State ─────────────────────────── */
.sp-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.625rem;
  padding: 3rem 1rem;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.sp-spinner {
  width: 18px;
  height: 18px;
  border: 2px solid var(--border-subtle);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: sp-spin 0.7s linear infinite;
  flex-shrink: 0;
}

.sp-spinner-sm {
  width: 14px;
  height: 14px;
  border-width: 1.5px;
}

@keyframes sp-spin {
  to { transform: rotate(360deg); }
}

/* ── Toast Notifications ───────────────────── */
.sp-toast-container {
  position: fixed;
  bottom: 1.25rem;
  right: 1.25rem;
  left: 1.25rem;
  display: flex;
  flex-direction: column-reverse;
  gap: 0.5rem;
  pointer-events: none;
  z-index: var(--z-toast);
}

@media (min-width: 480px) {
  .sp-toast-container {
    left: auto;
    max-width: 340px;
  }
}

.sp-toast {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-weight: 500;
  pointer-events: all;
  box-shadow: var(--shadow-lifted);
  animation: sp-toast-in 0.2s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
  border: 1px solid;
}

.sp-toast.is-hiding {
  animation: sp-toast-out 0.15s ease-in forwards;
}

.sp-toast svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.sp-toast-text {
  flex: 1;
  line-height: 1.4;
}

.sp-toast.toast-success {
  background: #14532d;
  color: #86efac;
  border-color: rgba(34, 197, 94, 0.3);
}

.sp-toast.toast-error {
  background: #450a0a;
  color: #fca5a5;
  border-color: rgba(239, 68, 68, 0.3);
}

.sp-toast.toast-info {
  background: #1e3a5f;
  color: #93c5fd;
  border-color: rgba(37, 99, 235, 0.3);
}

@keyframes sp-toast-in {
  from {
    opacity: 0;
    transform: translateY(8px) scale(0.97);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes sp-toast-out {
  from {
    opacity: 1;
    transform: scale(1);
  }
  to {
    opacity: 0;
    transform: scale(0.95);
  }
}

/* ── Visibility helpers ────────────────────── */
.sp-hidden {
  display: none !important;
}

/* ── Responsive ────────────────────────────── */
@media (min-width: 480px) {
  .sp-login-card {
    padding: 2.5rem;
  }

  .sp-content {
    padding: 1.5rem;
  }

  .sp-header {
    padding: 0 1.5rem;
  }

  .sp-tabs {
    padding: 0 1.5rem;
  }
}

@media (min-width: 640px) {
  .sp-shift-meta {
    flex-wrap: nowrap;
  }
}