/* =============================================
   One Button Client Portal — Styles
   ============================================= */

/* ---------- Google Fonts ---------- */
@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,600;1,9..40,400&family=Instrument+Serif:ital@0;1&display=swap');

/* ---------- Design Tokens ---------- */
:root {
  /* Colors */
  --color-bg: #FAFAF8;
  --color-surface: #FFFFFF;
  --color-surface-2: #F5F5F3;
  --color-border: rgba(26, 26, 26, 0.10);
  --color-border-strong: rgba(26, 26, 26, 0.18);
  --color-text: #1a1a1a;
  --color-text-muted: rgba(26, 26, 26, 0.55);
  --color-text-faint: rgba(26, 26, 26, 0.35);
  --color-accent: #1B2A4A;
  --color-accent-hover: #253a62;
  --color-accent-text: #FAFAF8;
  --color-error: #c44040;
  --color-error-bg: rgba(196, 64, 64, 0.06);
  --color-success: #2a7d4f;
  --color-success-bg: rgba(42, 125, 79, 0.06);

  /* Typography */
  --font-display: 'Instrument Serif', Georgia, serif;
  --font-body: 'DM Sans', system-ui, -apple-system, sans-serif;

  /* Type scale */
  --text-xs: clamp(0.75rem, 0.7rem + 0.15vw, 0.8125rem);
  --text-sm: clamp(0.8125rem, 0.78rem + 0.15vw, 0.875rem);
  --text-base: clamp(0.875rem, 0.84rem + 0.18vw, 1rem);
  --text-lg: clamp(1.125rem, 1rem + 0.4vw, 1.25rem);
  --text-xl: clamp(1.375rem, 1.2rem + 0.6vw, 1.625rem);
  --text-2xl: clamp(1.75rem, 1.4rem + 1vw, 2.25rem);
  --text-3xl: clamp(2.25rem, 1.8rem + 1.5vw, 3rem);

  /* Spacing (4px grid) */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;

  /* Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(26, 26, 26, 0.04), 0 1px 2px rgba(26, 26, 26, 0.03);
  --shadow-md: 0 4px 12px rgba(26, 26, 26, 0.06), 0 2px 4px rgba(26, 26, 26, 0.04);
  --shadow-lg: 0 8px 24px rgba(26, 26, 26, 0.08), 0 4px 8px rgba(26, 26, 26, 0.04);

  /* Easing */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);

  /* Transitions */
  --transition-fast: 180ms var(--ease-out);
}

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

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 400;
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.6;
  min-height: 100vh;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover {
  color: var(--color-accent-hover);
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input {
  font-family: inherit;
}

/* ---------- Utility ---------- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- Login Page ---------- */
.login-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: var(--space-6);
}

.login-card {
  width: 100%;
  max-width: 400px;
  text-align: center;
}

.login-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-12);
}

.login-brand-mark {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.login-brand svg {
  color: var(--color-text);
  width: 32px;
  height: 32px;
  flex-shrink: 0;
}

.login-brand-name {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text);
}

.login-brand-muted {
  font-weight: 400;
  color: var(--color-text-muted);
}

.login-brand-tagline {
  font-size: var(--text-xs);
  font-weight: 400;
  color: var(--color-text-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.login-subtitle {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-8);
  font-weight: 400;
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.login-input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-base);
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.login-input:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(27, 42, 74, 0.08);
}

.login-input::placeholder {
  color: var(--color-text-faint);
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-accent-text);
  background: var(--color-accent);
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--transition-fast), transform var(--transition-fast);
  min-height: 44px;
}

.btn-primary:hover {
  background: var(--color-accent-hover);
}

.btn-primary:active {
  transform: scale(0.98);
}

.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.login-message {
  margin-top: var(--space-4);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  line-height: 1.5;
}

.login-message.success {
  background: var(--color-success-bg);
  color: var(--color-success);
}

.login-message.error {
  background: var(--color-error-bg);
  color: var(--color-error);
}

.login-magic-link {
  margin-top: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface-2);
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  word-break: break-all;
  color: var(--color-text-muted);
}

.login-magic-link a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.login-footer {
  margin-top: var(--space-16);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

.login-footer a {
  color: var(--color-text-faint);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* ---------- Dashboard Header ---------- */
.portal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-6);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.portal-header-left {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.portal-header-left svg {
  color: var(--color-text);
  width: 20px;
  height: 20px;
}

.portal-header-brand {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text);
}

.portal-header-brand-muted {
  font-weight: 400;
  color: var(--color-text-muted);
}

.portal-header-sep {
  width: 1px;
  height: 20px;
  background: var(--color-border-strong);
  margin: 0 var(--space-2);
}

.portal-header-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 500;
}

.portal-header-right {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.btn-logout {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  background: none;
  border: 1px solid var(--color-border);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  min-height: 36px;
}

.btn-logout:hover {
  color: var(--color-text);
  border-color: var(--color-border-strong);
  background: var(--color-surface-2);
}

/* ---------- Dashboard Content ---------- */
.dashboard-content {
  max-width: 960px;
  margin: 0 auto;
  padding: var(--space-10) var(--space-6) var(--space-16);
}

.dashboard-welcome {
  margin-bottom: var(--space-10);
}

.dashboard-welcome h1 {
  font-family: var(--font-display);
  font-style: italic;
  font-size: var(--text-2xl);
  font-weight: 400;
  letter-spacing: -0.01em;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.dashboard-welcome p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* Admin client selector */
.admin-selector {
  margin-bottom: var(--space-8);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.admin-selector label {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
}

.admin-selector select {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  padding: var(--space-2) var(--space-3);
  padding-right: var(--space-8);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-text);
  cursor: pointer;
  outline: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg width='10' height='6' viewBox='0 0 10 6' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%231a1a1a' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  min-height: 40px;
  transition: border-color var(--transition-fast);
}

.admin-selector select:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(27, 42, 74, 0.08);
}

/* ---------- Report Grid ---------- */
.reports-section-title {
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-4);
}

.reports-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--space-4);
}

.report-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-5) var(--space-6);
  cursor: pointer;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  text-decoration: none;
  color: inherit;
  min-height: 120px;
}

.report-card:hover {
  border-color: var(--color-border-strong);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
  color: inherit;
}

.report-card:active {
  transform: translateY(0);
}

.report-category {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-2);
  font-size: 11px;
  font-weight: 500;
  color: var(--color-accent);
  background: rgba(27, 42, 74, 0.06);
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  width: fit-content;
}

.report-title {
  font-family: var(--font-display);
  font-style: italic;
  font-size: var(--text-lg);
  font-weight: 400;
  color: var(--color-text);
  letter-spacing: -0.01em;
}

.report-arrow {
  margin-top: auto;
  color: var(--color-text-faint);
  transition: color var(--transition-fast), transform var(--transition-fast);
}

.report-card:hover .report-arrow {
  color: var(--color-accent);
  transform: translateX(3px);
}

/* ---------- Report Viewer ---------- */
.report-viewer {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: var(--color-bg);
  display: flex;
  flex-direction: column;
}

.report-viewer-bar {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
  min-height: 48px;
}

.btn-back {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  transition: all var(--transition-fast);
  background: none;
  border: none;
  cursor: pointer;
}

.btn-back:hover {
  color: var(--color-text);
  background: var(--color-surface-2);
}

.report-viewer-title {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
  flex: 1;
}

.report-viewer-brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text);
}

.report-viewer-brand-muted {
  font-weight: 400;
  color: var(--color-text-muted);
}

.report-viewer-brand svg {
  width: 18px;
  height: 18px;
}

.report-iframe {
  flex: 1;
  border: none;
  width: 100%;
  height: 100%;
  background: var(--color-bg);
}

/* ---------- Empty / Loading States ---------- */
.loading-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-16) var(--space-6);
  color: var(--color-text-muted);
  gap: var(--space-3);
}

.loading-spinner {
  width: 24px;
  height: 24px;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.empty-state {
  text-align: center;
  padding: var(--space-16) var(--space-6);
  color: var(--color-text-muted);
}

.empty-state p {
  font-size: var(--text-sm);
}

/* ---------- Portal Footer ---------- */
.portal-footer {
  padding: var(--space-8) var(--space-6);
  text-align: center;
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

.portal-footer a {
  color: var(--color-text-faint);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* ---------- Animations ---------- */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-in {
  animation: fadeIn 0.4s var(--ease-out) both;
}

.slide-up {
  animation: slideUp 0.5s var(--ease-out) both;
}

/* Staggered entrance for report cards */
.report-card:nth-child(1) { animation-delay: 0ms; }
.report-card:nth-child(2) { animation-delay: 50ms; }
.report-card:nth-child(3) { animation-delay: 100ms; }
.report-card:nth-child(4) { animation-delay: 150ms; }
.report-card:nth-child(5) { animation-delay: 200ms; }
.report-card:nth-child(6) { animation-delay: 250ms; }

/* ---------- Responsive ---------- */
@media (max-width: 640px) {
  .portal-header {
    padding: var(--space-3) var(--space-4);
  }

  .portal-header-brand {
    font-size: 10px;
  }

  .portal-header-sep,
  .portal-header-label {
    display: none;
  }

  .dashboard-content {
    padding: var(--space-6) var(--space-4) var(--space-12);
  }

  .reports-grid {
    grid-template-columns: 1fr;
  }

  .report-card {
    min-height: unset;
    padding: var(--space-4) var(--space-5);
  }

  .report-viewer-brand {
    display: none;
  }

  .admin-selector {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
  }

  .admin-selector select {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .login-brand-name {
    font-size: var(--text-xs);
    letter-spacing: 0.1em;
  }
}

/* ---------- Focus Styles ---------- */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* ---------- Reduced Motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}