:root {
  color-scheme: dark;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen", "Ubuntu", "Cantarell", sans-serif;
  background: #f5f6f7;
  color: #111;
  line-height: 1.6;
  --primary: #1e7aee;
  --primary-light: #e3f0ff;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --shadow-sm: 0 2px 8px rgba(0,0,0,.06);
  --shadow-md: 0 8px 24px rgba(0,0,0,.08);
  --shadow-lg: 0 16px 48px rgba(0,0,0,.1);
}
* {
  box-sizing: border-box;
}
body, html {
  margin: 0;
  min-height: 100%;
  background: #f5f6f7;
}
button, input, textarea, select {
  font: inherit;
}
select,
input[type="date"],
input[type="text"],
input[type="number"],
textarea {
  color: #111;
  background: #fff;
  transition: all .2s ease;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
}
select:focus,
input[type="date"]:focus,
input[type="text"]:focus,
input[type="number"]:focus,
textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}
select option {
  color: #111;
}
button {
  border: none;
  cursor: pointer;
  transition: all .25s cubic-bezier(0.4, 0, 0.2, 1);
}
.hidden {
  display: none !important;
}
.page {
  width: 100%;
  min-height: 100vh;
}
.login-page {
  display: grid;
  place-items: center;
  padding: 2rem;
  background: linear-gradient(135deg, #050505 0%, #171717 100%);
}
.login-panel {
  width: min(520px, 100%);
  background: #111;
  border: 1px solid rgba(255,255,255,.08);
  box-shadow: 0 32px 90px rgba(0,0,0,.35);
  border-radius: 28px;
  padding: 2rem;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.login-panel::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(30, 122, 238, .1) 0%, transparent 70%);
  pointer-events: none;
}
.brand {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.brand-mark {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: #fff;
  color: #111;
  display: grid;
  place-items: center;
  font-weight: 800;
  font-size: 1.6rem;
}
.brand-name {
  font-size: 1.2rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.login-copy h1 {
  margin: 0 0 .5rem;
  font-size: 1.8rem;
  background: linear-gradient(135deg, #fff 0%, #f0f0f0 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.login-copy p {
  margin: 0 0 1.5rem;
  opacity: .85;
  line-height: 1.6;
}
.login-form {
  display: grid;
  gap: 1rem;
}
.login-form label {
  display: grid;
  gap: .5rem;
  font-size: .95rem;
}
.login-form input {
  width: 100%;
  padding: .95rem 1rem;
  border-radius: 16px;
  border: 1px solid rgba(255,255,255,.16);
  background: rgba(255,255,255,.06);
  color: #fff;
  transition: all .2s ease;
}
.login-form input:focus {
  outline: none;
  background: rgba(255,255,255,.12);
  border-color: rgba(255,255,255,.32);
  box-shadow: 0 0 0 3px rgba(255,255,255,.08);
}
.login-form input::placeholder {
  color: rgba(255,255,255,.5);
}
.login-form button {
  margin-top: .5rem;
  padding: 1rem 1.2rem;
  background: linear-gradient(135deg, #fff 0%, #f0f0f0 100%);
  color: #111;
  border-radius: 16px;
  font-weight: 700;
  box-shadow: var(--shadow-md);
}
.login-form button:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(0,0,0,.15);
}
.login-form button:active {
  transform: translateY(0);
}
.form-error {
  color: #ff7d7d;
  min-height: 1.2rem;
}
.login-footer {
  margin-top: 1.5rem;
  font-size: .85rem;
  color: rgba(255,255,255,.72);
}
.app {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: 100vh;
  height: 100vh;
  overflow: hidden;
}
.sidebar {
  background: #050505;
  color: #fff;
  padding: 1.5rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  isolation: isolate;
}
.logo-block {
  display: flex;
  align-items: center;
  gap: 1rem;
}
.logo-mark {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: #fff;
  color: #050505;
  display: grid;
  place-items: center;
  font-weight: 900;
}
.logo-title {
  color: #fff;
  font-size: .95rem;
  text-transform: uppercase;
}
.logo-subtitle {
  color: rgba(255,255,255,.6);
  font-size: .85rem;
}
.nav-menu {
  display: grid;
  gap: .5rem;
}
.nav-link {
  border-radius: 18px;
  text-align: left;
  padding: .9rem 1rem;
  background: transparent;
  color: #fff;
  display: flex;
  align-items: center;
  gap: .75rem;
  transition: all .2s ease;
  position: relative;
}
.nav-link:hover {
  background: rgba(30, 122, 238, .12);
}
.nav-link.active {
  background: linear-gradient(135deg, rgba(30, 122, 238, .16) 0%, rgba(30, 122, 238, .08) 100%);
  color: #fff;
  font-weight: 500;
}
.nav-link .icon {
  width: 1.4rem;
  height: 1.4rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.nav-link .icon svg {
  width: 1.2rem;
  height: 1.2rem;
  fill: #111;
  stroke: #fff;
  stroke-width: 1.4;
}
.logout-btn {
  margin-top: auto;
  padding: 1rem;
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(239, 68, 68, .2) 0%, rgba(239, 68, 68, .1) 100%);
  color: #fff;
  border: 1px solid rgba(239, 68, 68, .3);
  transition: all .2s ease;
}
.logout-btn:hover {
  background: linear-gradient(135deg, rgba(239, 68, 68, .3) 0%, rgba(239, 68, 68, .2) 100%);
  border-color: rgba(239, 68, 68, .5);
  transform: translateY(-2px);
}
.main {
  padding: 1.5rem 2rem;
  background: #f5f6f7;
  height: 100vh;
  overflow: hidden;
}
.page-section {
  max-height: calc(100vh - 150px);
  overflow-y: auto;
  padding-right: .75rem;
}
.topbar {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
  margin-bottom: 1.5rem;
}
.topbar h2 {
  margin: 0;
  font-size: 1.55rem;
  background: linear-gradient(135deg, #111 0%, #333 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.subtitle {
  margin: .3rem 0 0;
  color: #5f6368;
}
.user-badge {
  text-align: right;
}
.user-badge span {
  color: #5f6368;
  display: block;
}
.user-badge strong {
  display: block;
  margin-top: .25rem;
}
.cards-row {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.card {
  padding: 1.5rem;
  border-radius: 24px;
  background: linear-gradient(180deg, #fff 0%, #fafbfc 100%);
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(30, 122, 238, .08);
  transition: all .3s ease;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(30, 122, 238, .12);
}
.white-card h3 {
  margin: 0 0 .65rem;
  font-size: 1rem;
}
.white-card p {
  margin: 0;
  color: #4a4a4a;
}
.panel-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 1rem;
}
.panel-card {
  background: #fff;
  border-radius: 24px;
  padding: 1.5rem;
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(30, 122, 238, .08);
  transition: all .2s ease;
}
.panel-card:hover {
  box-shadow: var(--shadow-lg);
}
.panel-card h3 {
  margin-top: 0;
}

.panel-card ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.panel-card li {
  margin-bottom: 0.75rem;
}

.panel-card a {
  color: var(--primary);
  text-decoration: none;
  transition: all .2s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.panel-card a:hover {
  color: #1567d1;
  text-decoration: underline;
  transform: translateX(2px);
}

.table-wrap {
  background: #fff;
  padding: 1.2rem;
  border-radius: 24px;
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(30, 122, 238, .08);
  overflow-x: auto;
  max-height: 65vh;
  overflow-y: auto;
}
.panel-card,
.calendar-card,
.editor-block,
.template-card {
  max-height: 65vh;
  overflow-y: auto;
}
table {
  width: 100%;
  border-collapse: collapse;
}
th, td {
  padding: .95rem 1rem;
  border-bottom: 1px solid #e6e8ec;
  text-align: left;
}
th {
  color: #5f6368;
  font-weight: 700;
  background: linear-gradient(135deg, #fafbfc 0%, #f3f4f6 100%);
  border-bottom: 2px solid rgba(30, 122, 238, .1);
}
tbody tr:hover {
  background: linear-gradient(90deg, rgba(30, 122, 238, .04) 0%, transparent 100%);
}
.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.form-grid label {
  display: grid;
  gap: .5rem;
  font-weight: 600;
}
.form-grid input, .form-grid select, .form-grid textarea {
  width: 100%;
  border: 1px solid #dfe2e6;
  border-radius: 16px;
  padding: .95rem 1rem;
  background: #fff;
  color: #111;
  transition: all .2s ease;
}
.form-grid input:focus, .form-grid select:focus, .form-grid textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}
.form-actions {
  display: flex;
  align-items: flex-end;
  gap: .75rem;
  grid-column: span 2;
}
.form-actions button {
  padding: 1rem 1.2rem;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--primary) 0%, #1567d1 100%);
  color: #fff;
  font-weight: 700;
  transition: all .2s ease;
  box-shadow: var(--shadow-sm);
}
.form-actions button:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.form-actions button:active {
  transform: translateY(0);
}
.editor-block {
  margin-bottom: 1.5rem;
}
.editor-block textarea {
  width: 100%;
  border: 1px solid #dfe2e6;
  border-radius: 18px;
  padding: 1rem;
  resize: vertical;
  color: #111;
  background: #fff;
  transition: all .2s ease;
}
.editor-block textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}
.signature-panel {
  background: #fff;
  border-radius: 24px;
  box-shadow: var(--shadow-md);
  padding: 1.25rem;
  margin-bottom: 1.5rem;
  border: 1px solid rgba(30, 122, 238, .08);
}
.signature-panel input {
  width: 100%;
  border: 1px solid #dfe2e6;
  border-radius: 16px;
  padding: .95rem 1rem;
  color: #111;
  background: #fff;
  transition: all .2s ease;
}
.signature-panel input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}
.signature-panel button {
  margin-top: .75rem;
  padding: 1rem 1.2rem;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--success) 0%, #059669 100%);
  color: #fff;
  font-weight: 700;
  transition: all .2s ease;
  box-shadow: var(--shadow-sm);
}
.signature-panel button:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.small-note {
  margin: .75rem 0 0;
  color: #5f6368;
}
.cards-column {
  display: grid;
  gap: 1rem;
}
.template-card {
  padding: 1.25rem;
  background: #fff;
  border-radius: 24px;
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(30, 122, 238, .08);
  transition: all .2s ease;
}
.template-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(30, 122, 238, .16);
}
.template-card button {
  padding: .85rem 1.1rem;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--primary) 0%, #1567d1 100%);
  color: #fff;
  font-weight: 600;
  transition: all .2s ease;
  box-shadow: var(--shadow-sm);
  flex: 1;
}
.template-card button:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.calendar-grid {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 1rem;
}
.calendar-card {
  background: #fff;
  border-radius: 24px;
  padding: 1.5rem;
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(30, 122, 238, .08);
}
.calendar-card h3 {
  margin-top: 0;
}
.calendar-card ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.calendar-card li {
  margin-bottom: .75rem;
  color: #333;
}
@media (max-width: 1100px) {
  .app { grid-template-columns: 1fr; }
  .sidebar { flex-direction: row; overflow-x: auto; min-height: auto; }
  .nav-menu { grid-auto-flow: column; grid-auto-columns: max-content; }
  .main { padding: 1rem; }
  .cards-row, .panel-grid, .form-grid, .calendar-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  :root {
    font-size: 14px;
  }
  
  .app {
    grid-template-columns: 1fr;
  }
  
  .sidebar {
    flex-direction: row;
    overflow-x: auto;
    overflow-y: hidden;
    height: auto;
    min-height: 70px;
    padding: 0.75rem;
    gap: 0.5rem;
  }
  
  .logo-block {
    min-width: 50px;
  }
  
  .logo-mark {
    width: 40px;
    height: 40px;
    font-size: 1.2rem;
  }
  
  .logo-title, .logo-subtitle {
    display: none;
  }
  
  .nav-menu {
    display: flex;
    gap: 0.25rem;
    overflow-x: auto;
  }
  
  .nav-link {
    padding: 0.7rem 0.85rem;
    font-size: 0.85rem;
    border-radius: 12px;
    white-space: nowrap;
    min-height: 44px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
  }
  
  .nav-link .icon {
    width: 1.2rem;
    height: 1.2rem;
  }
  
  .nav-link .icon svg {
    width: 1rem;
    height: 1rem;
  }
  
  .logout-btn {
    display: none;
  }
  
  .main {
    padding: 0.75rem;
  }
  
  .topbar {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
    margin-bottom: 1rem;
  }
  
  .topbar h2 {
    font-size: 1.3rem;
  }
  
  .user-badge {
    text-align: left;
    width: 100%;
  }
  
  .cards-row {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
    margin-bottom: 1rem;
  }
  
  .card {
    padding: 1rem;
  }
  
  .panel-grid {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }
  
  .panel-card {
    padding: 1rem;
    max-height: 50vh;
  }
  
  .form-grid {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }
  
  .form-actions {
    flex-direction: column;
    grid-column: span 1;
  }
  
  .form-actions button {
    width: 100%;
    padding: 0.85rem 1rem;
    min-height: 44px;
  }
  
  label input,
  label textarea,
  label select {
    font-size: 16px;
    padding: 0.8rem;
  }
  
  table {
    font-size: 0.9rem;
  }
  
  th, td {
    padding: 0.7rem 0.5rem;
  }
  
  .template-card {
    padding: 0.85rem;
  }
  
  .calendar-grid {
    grid-template-columns: 1fr;
  }
  
  .calendar-card {
    padding: 1rem;
    max-height: 45vh;
  }
  
  #ai-provider,
  #ai-type {
    font-size: 16px;
    padding: 0.8rem;
  }
  
  button {
    min-height: 44px;
    padding: 0.8rem 1rem;
  }
}

@media (max-width: 480px) {
  :root {
    font-size: 13px;
  }
  
  .login-panel {
    padding: 1.25rem;
  }
  
  .brand-mark {
    width: 48px;
    height: 48px;
  }
  
  .login-form label {
    font-size: 0.9rem;
    gap: 0.35rem;
  }
  
  .login-form input {
    padding: 0.85rem 0.8rem;
    font-size: 16px;
  }
  
  .sidebar {
    min-height: 60px;
    padding: 0.5rem;
  }
  
  .nav-link {
    padding: 0.6rem 0.7rem;
    font-size: 0.8rem;
    border-radius: 10px;
  }
  
  .nav-link .icon {
    width: 1rem;
    height: 1rem;
  }
  
  .topbar {
    margin-bottom: 0.75rem;
  }
  
  .topbar h2 {
    font-size: 1.2rem;
  }
  
  .subtitle {
    font-size: 0.8rem;
  }
  
  .cards-row {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }
  
  .card {
    padding: 0.75rem;
  }
  
  .card h3 {
    font-size: 0.95rem;
    margin-bottom: 0.35rem;
  }
  
  .card p {
    font-size: 0.85rem;
  }
  
  .panel-card,
  .calendar-card {
    padding: 0.75rem;
    border-radius: 16px;
  }
  
  .form-grid {
    gap: 0.5rem;
  }
  
  .form-grid label {
    gap: 0.35rem;
    font-size: 0.9rem;
  }
  
  .form-grid input,
  .form-grid select,
  .form-grid textarea {
    padding: 0.75rem;
    font-size: 16px;
    border-radius: 12px;
  }
  
  .form-actions button {
    padding: 0.75rem 0.9rem;
    font-size: 0.9rem;
    min-height: 40px;
  }
  
  .page-section {
    max-height: calc(100vh - 120px);
  }
  
  table {
    font-size: 0.8rem;
  }
  
  th, td {
    padding: 0.5rem 0.35rem;
  }
  
  .template-card {
    padding: 0.7rem;
  }
  
  .template-card h3 {
    font-size: 0.95rem;
    margin-bottom: 0.25rem;
  }
  
  .template-card p {
    font-size: 0.8rem;
    margin-bottom: 0.5rem;
  }
  
  .template-card button {
    padding: 0.65rem 0.8rem;
    font-size: 0.85rem;
    min-height: 40px;
  }
  
  .editor-block {
    margin-bottom: 0.75rem;
  }
  
  .editor-block h3 {
    font-size: 1rem;
    margin-bottom: 0.5rem;
  }
  
  .editor-block textarea {
    font-size: 16px;
    padding: 0.7rem;
    border-radius: 12px;
    max-height: 40vh;
  }
  
  #ai-provider,
  #ai-type {
    font-size: 16px;
    padding: 0.75rem;
  }
  
  #ai-prompt {
    font-size: 16px;
    padding: 0.75rem;
  }
  
  #ai-output {
    font-size: 15px;
    padding: 0.7rem;
  }
  
  button {
    font-size: 0.9rem;
    min-height: 40px;
    padding: 0.7rem 0.9rem;
  }
  
  a {
    font-size: 0.95rem;
  }
}

@media (max-width: 360px) {
  :root {
    font-size: 12px;
  }
  
  .topbar h2 {
    font-size: 1.1rem;
  }
  
  .cards-row {
    gap: 0.4rem;
  }
  
  .card {
    padding: 0.6rem;
  }
  
  table {
    font-size: 0.75rem;
  }
  
  th, td {
    padding: 0.4rem 0.25rem;
  }
}

/* Scrollbar styling */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: rgba(30, 122, 238, .4);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(30, 122, 238, .6);
}

/* External link styling */
a {
  color: var(--primary);
  text-decoration: none;
  transition: all .2s ease;
}

a:hover {
  color: #1567d1;
}

/* Touch optimization */
@media (hover: none) and (pointer: coarse) {
  button {
    min-height: 48px;
    min-width: 48px;
    padding: 0.9rem 1.1rem;
  }
  
  button:active {
    opacity: 0.8;
  }
  
  label {
    cursor: pointer;
  }
  
  input,
  textarea,
  select {
    font-size: 16px !important;
    padding: 0.85rem !important;
  }
  
  .nav-link {
    min-height: 48px;
    min-width: 48px;
  }
}

/* High DPI screens */
@media (min-width: 1920px) {
  :root {
    font-size: 18px;
  }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
  :root {
    --primary: #3b82f6;
    --success: #34d399;
    --danger: #f87171;
  }
  
  body, html {
    background: #0f172a;
    color: #e2e8f0;
  }
  
  .app {
    background: #0f172a;
  }
  
  .main {
    background: #1e293b;
  }
  
  .card,
  .panel-card,
  .calendar-card,
  .template-card,
  .table-wrap,
  .editor-block textarea,
  .form-grid input,
  .form-grid select,
  .form-grid textarea {
    background: #1e293b;
    color: #e2e8f0;
    border-color: rgba(59, 130, 246, 0.2);
  }
  
  table {
    background: #1e293b;
    color: #e2e8f0;
  }
  
  th {
    background: #0f172a;
  }
  
  td {
    border-color: #334155;
  }
  
  input,
  textarea,
  select {
    background: #0f172a;
    color: #e2e8f0;
    border-color: #334155;
  }
  
  input::placeholder,
  textarea::placeholder {
    color: #64748b;
  }
}

/* Landscape mode on mobile */
@media (max-height: 500px) and (orientation: landscape) {
  .sidebar {
    min-height: 50px;
  }
  
  .nav-link {
    padding: 0.5rem 0.6rem;
    font-size: 0.75rem;
  }
  
  .main {
    padding: 0.5rem;
  }
  
  .page-section {
    max-height: calc(100vh - 80px);
  }
  
  .topbar {
    margin-bottom: 0.5rem;
  }
  
  .topbar h2 {
    font-size: 1.1rem;
  }
}

/* Print optimization */
@media print {
  .sidebar,
  .topbar,
  .nav-link,
  button,
  #logout-button {
    display: none !important;
  }
  
  .main {
    padding: 0;
    height: auto;
  }
  
  .page-section {
    max-height: none;
    overflow: visible;
  }
  
  body {
    background: #fff;
  }
}

/* AI Assistant styling */
#ai-provider,
#ai-type {
  width: 100%;
}

#ai-loading {
  color: var(--primary);
  font-weight: 600;
}

#ai-copy {
  background: linear-gradient(135deg, var(--primary) 0%, #1567d1 100%);
  color: #fff;
  font-weight: 700;
  padding: 0.85rem 1.1rem;
  border-radius: 16px;
  border: none;
  cursor: pointer;
  transition: all .2s ease;
  box-shadow: var(--shadow-sm);
}

#ai-copy:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

#ai-copy:active {
  transform: translateY(0);
}