@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&display=swap');

:root {
  /* Minimalist Premium Light Theme */
  --color-primary: #09090b;         /* Zinc 950 (Almost Black) */
  --color-primary-dark: #000000;    /* Pure Black */
  --color-primary-light: #f4f4f5;   /* Zinc 100 */
  --color-primary-glow: rgba(9, 9, 11, 0.05);
  
  --color-surface: rgba(255, 255, 255, 0.8);
  --color-surface-hover: rgba(250, 250, 250, 0.9);
  --color-bg: #fafafa;              /* Warm white background */
  --color-text: #09090b;            /* Zinc 950 */
  --color-text-muted: #71717a;      /* Zinc 500 */
  --color-border: #e4e4e7;          /* Zinc 200 - thin grid lines */
  
  --color-danger: #e11d48;          /* Rose 600 */
  --color-danger-bg: #fff1f2;       /* Rose 50 */
  --color-success: #16a34a;         /* Green 600 */
  --color-success-bg: #f0fdf4;      /* Green 50 */
  --color-warning: #d97706;         /* Amber 600 */
  --color-warning-bg: #fefbeb;      /* Amber 50 */

  /* Flat elegant shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.02);
  --shadow-md: 0 4px 20px -2px rgba(0, 0, 0, 0.03), 0 2px 8px -1px rgba(0, 0, 0, 0.02);
  --shadow-lg: 0 12px 30px -10px rgba(0, 0, 0, 0.04);

  /* Sharper border radius */
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 10px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
}

/* Minimalist Dark Theme */
html.dark, body.dark {
  --color-primary: #ffffff;
  --color-primary-dark: #f4f4f5;
  --color-primary-light: #27272a;
  --color-primary-glow: rgba(255, 255, 255, 0.08);
  
  --color-surface: rgba(9, 9, 11, 0.75);
  --color-surface-hover: rgba(24, 24, 27, 0.85);
  --color-bg: #09090b;              /* Clean dark zinc */
  --color-text: #fafafa;
  --color-text-muted: #a1a1aa;      /* Zinc 400 */
  --color-border: #27272a;          /* Zinc 800 */
  
  --color-danger: #fb7185;
  --color-danger-bg: rgba(251, 113, 133, 0.08);
  --color-success: #4ade80;
  --color-success-bg: rgba(74, 222, 128, 0.08);
  --color-warning: #facc15;
  --color-warning-bg: rgba(250, 204, 21, 0.08);

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 20px -2px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 12px 30px -10px rgba(0, 0, 0, 0.5);
}

* { 
  box-sizing: border-box; 
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  font-weight: 300; /* Light elegant weight */
  -webkit-font-smoothing: antialiased;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

a { 
  color: var(--color-text); 
  text-decoration: none; 
  transition: all var(--transition-fast);
}
a:hover {
  opacity: 0.7;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 500;
  line-height: 1.25;
  color: var(--color-text);
  letter-spacing: -0.02em;
}

/* Layout */
.topbar {
  background: rgba(255, 255, 255, 0.75);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  padding: 1rem 2.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  position: sticky;
  top: 0;
  z-index: 50;
  transition: all var(--transition-normal);
}

html.dark .topbar {
  background: rgba(9, 9, 11, 0.75);
}

.brand { 
  color: var(--color-text); 
  font-weight: 600; 
  font-size: 1.25rem;
  letter-spacing: -0.03em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.brand:hover {
  opacity: 0.8;
}

.nav { 
  display: flex; 
  flex-wrap: wrap; 
  gap: 0.5rem; 
  align-items: center; 
}
.nav a { 
  color: var(--color-text-muted); 
  font-weight: 400;
  font-size: 0.9rem;
  padding: 0.45rem 0.75rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}
.nav a:hover, .nav a.active {
  color: var(--color-text);
  background: var(--color-primary-light);
}

.container { 
  max-width: 1100px; 
  margin: 3.5rem auto; 
  padding: 0 2rem; 
  animation: fadeIn 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.auth-box { 
  max-width: 400px; 
  margin: 14vh auto 2rem auto; 
}

/* Theme Toggle Button Style */
.theme-toggle-btn {
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
  width: 2rem;
  height: 2rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}
.theme-toggle-btn:hover {
  color: var(--color-text);
  border-color: var(--color-text);
}

/* Components */
.panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm); /* Sharper borders */
  padding: 2.25rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}
.panel:hover {
  box-shadow: var(--shadow-md);
}

/* Grid & Dashboard Styles */
.grid { 
  display: grid; 
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); 
  gap: 1.5rem; 
}

.metric-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 1.5rem 1.75rem;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-sm);
  position: relative;
}
.metric-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: var(--color-text);
}
.metric-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.metric { 
  font-size: 2.75rem; 
  font-weight: 500; 
  margin-top: 0.5rem; 
  color: var(--color-text);
  line-height: 1.1;
  letter-spacing: -0.04em;
}

.muted { 
  color: var(--color-text-muted); 
}

/* Forms */
.row { 
  display: grid; 
  grid-template-columns: 1fr 1fr; 
  gap: 1.5rem; 
}

label { 
  display: block; 
  font-weight: 500; 
  margin-bottom: 0.4rem; 
  font-size: 0.85rem;
  color: var(--color-text);
}

input, select, textarea {
  width: 100%;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.6rem 0.85rem;
  font-family: inherit;
  font-size: 0.9rem;
  background: var(--color-surface);
  color: var(--color-text);
  transition: all var(--transition-fast);
}

input:hover, select:hover, textarea:hover {
  border-color: var(--color-text-muted);
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--color-text);
  box-shadow: none;
}

textarea { 
  min-height: 120px; 
  resize: vertical; 
}

/* Buttons */
.actions { 
  display: flex; 
  flex-wrap: wrap; 
  gap: 0.75rem; 
  align-items: center; 
  margin-top: 2rem; 
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-primary);
  background: var(--color-primary);
  color: var(--color-bg) !important;
  border-radius: var(--radius-sm);
  padding: 0.6rem 1.35rem;
  cursor: pointer;
  font-family: inherit;
  font-weight: 500;
  font-size: 0.9rem;
  transition: all var(--transition-fast);
  gap: 0.5rem;
}

.btn:hover { 
  background: transparent;
  color: var(--color-primary) !important;
}
.btn:active {
  transform: translateY(0);
}
.btn:focus-visible {
  outline: none;
}

.btn.secondary { 
  background: transparent; 
  color: var(--color-text) !important; 
  border-color: var(--color-border);
}
.btn.secondary:hover {
  background: var(--color-primary-light);
  border-color: var(--color-text);
}

.btn.danger { 
  background: var(--color-danger); 
  border-color: var(--color-danger);
  color: white !important;
}
.btn.danger:hover {
  background: transparent;
  color: var(--color-danger) !important;
}

/* Tables */
.table-wrap { 
  overflow-x: auto; 
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  background: var(--color-surface);
}
table { 
  width: 100%; 
  border-collapse: collapse; 
  text-align: left;
}
th, td { 
  border-bottom: 1px solid var(--color-border); 
  padding: 0.85rem 1.25rem; 
  vertical-align: middle; 
}
th { 
  color: var(--color-text-muted); 
  font-size: 0.8rem; 
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: var(--color-surface-hover);
}
tr:hover td {
  background: var(--color-surface-hover);
}
tr:last-child td {
  border-bottom: none;
}

/* Badges */
.badge { 
  display: inline-flex; 
  align-items: center;
  border-radius: var(--radius-sm); 
  padding: 0.2rem 0.6rem; 
  font-size: 0.72rem; 
  font-weight: 500;
  background: var(--color-primary-light); 
  color: var(--color-text); 
  border: 1px solid var(--color-border);
}
.badge.urgent, .badge.failed { 
  background: var(--color-danger-bg); 
  color: var(--color-danger); 
  border-color: rgba(225, 29, 72, 0.2);
}
.badge.important, .badge.overdue { 
  background: var(--color-warning-bg); 
  color: var(--color-warning); 
  border-color: rgba(217, 119, 6, 0.2);
}
.badge.done, .badge.success { 
  background: var(--color-success-bg); 
  color: var(--color-success); 
  border-color: rgba(22, 163, 74, 0.2);
}

/* Alerts / Flash Messages */
.flash { 
  padding: 0.85rem 1.25rem; 
  border-radius: var(--radius-sm); 
  margin-bottom: 2rem; 
  font-weight: 500;
  display: flex;
  align-items: center;
  animation: slideDown 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  border: 1px solid var(--color-border);
}
.flash.success { 
  background: var(--color-success-bg); 
  color: var(--color-success); 
  border-color: rgba(22, 163, 74, 0.2);
}
.flash.error { 
  background: var(--color-danger-bg); 
  color: var(--color-danger); 
  border-color: rgba(225, 29, 72, 0.2);
}

.inline-form { display: inline; }

.link-button {
  border: 0;
  background: transparent;
  color: var(--color-text-muted);
  cursor: pointer;
  font: inherit;
  font-weight: 500;
  padding: 0.35rem 0.65rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.link-button:hover {
  color: var(--color-text);
  background: var(--color-primary-light);
}

.danger-text,
.danger-text:hover {
  color: var(--color-danger);
}
.danger-text:hover {
  background: var(--color-danger-bg);
}

/* Dashboard List Items styling */
.plan-item {
  margin-bottom: 1rem;
  padding: 0.85rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  background: var(--color-surface);
}
.plan-item:hover {
  border-color: var(--color-text);
  transform: translateX(2px);
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes slideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Responsive */
@media (max-width: 768px) {
  .topbar { 
    flex-direction: column; 
    align-items: stretch;
    padding: 1rem 1.5rem;
  }
  .nav {
    justify-content: center;
    gap: 0.5rem;
  }
  .row { grid-template-columns: 1fr; gap: 1rem; }
  .grid { grid-template-columns: 1fr; }
  .panel { padding: 1.5rem; }
  .metric { font-size: 2.25rem; }
}

/* Installer compatibility styles */
.install-page {
  background: radial-gradient(circle at 10% 20%, #ffffff 0%, var(--color-bg) 90%);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
.install-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 2.5rem;
  width: 100%;
  max-width: 1100px;
  margin: 3.5rem 2rem;
  padding: 0;
  animation: fadeIn 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
.install-sidebar {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 2.5rem 1.75rem;
  color: var(--color-text);
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 2rem;
  align-self: start;
  min-height: calc(100vh - 7rem);
  border: 1px solid var(--color-border);
  transition: all var(--transition-normal);
}
.install-brand {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--color-border);
}
.install-brand strong {
  display: block;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: -0.03em;
}
.install-brand span {
  display: block;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-top: 0.25rem;
  font-weight: 400;
}
.install-steps {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  flex: 1;
  position: relative;
  margin: 1rem 0;
}
.install-steps::before {
  content: '';
  position: absolute;
  left: calc(0.5rem + 0.875rem); /* align with span center */
  top: 1rem;
  bottom: 1rem;
  width: 1px;
  background: var(--color-border);
  z-index: 0;
}
.install-step {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  font-weight: 400;
  transition: all var(--transition-normal);
  position: relative;
  z-index: 1;
}
.install-step span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.75rem;
  height: 1.75rem;
  border-radius: var(--radius-full);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: 0.75rem;
  font-weight: 500;
  transition: all var(--transition-normal);
  z-index: 2;
}
.install-step strong {
  font-size: 0.85rem;
  font-weight: 400;
  transition: color var(--transition-normal);
}
.install-step.active {
  color: var(--color-text);
}
.install-step.active span {
  background: var(--color-text);
  color: var(--color-bg);
  border-color: var(--color-text);
  box-shadow: 0 0 0 3px var(--color-primary-glow);
}
.install-step.active strong {
  font-weight: 500;
}
.install-step.done {
  color: var(--color-text);
}
.install-step.done span {
  background: var(--color-success-bg);
  border-color: var(--color-success);
  color: var(--color-success);
}
.install-main {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
  min-width: 0;
}
.install-heading {
  margin-bottom: 0.25rem;
}
.install-eyebrow {
  display: inline-block;
  color: var(--color-text-muted);
  font-weight: 500;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}
.install-heading h1 {
  font-size: 1.75rem;
  font-weight: 500;
  color: var(--color-text);
  letter-spacing: -0.03em;
  margin-bottom: 0.5rem;
}
.install-heading p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  line-height: 1.5;
}
.install-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: 2.5rem;
  animation: fadeIn 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
.install-card table {
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin-bottom: 1.5rem;
}
.install-card .actions {
  display: flex;
  justify-content: flex-end;
  gap: 1rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
  margin-top: 1.75rem;
}
.install-note {
  margin-bottom: 1.5rem;
  padding: 1rem 1.25rem;
  background: var(--color-primary-light);
  border-left: 2px solid var(--color-text);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  color: var(--color-text-muted);
  font-weight: 400;
  line-height: 1.6;
}
.install-summary {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}
.install-summary strong {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: 0.75rem;
}
.install-summary p {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  line-height: 1.4;
}
.install-summary div {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--color-border);
}
.install-summary span {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}
.install-summary em {
  font-size: 0.8rem;
  color: var(--color-text);
  font-style: normal;
  word-break: break-all;
}
.install-result-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
  margin-bottom: 1.5rem;
}
.install-result-grid div {
  padding: 1rem 1.25rem;
  background: var(--color-surface-hover);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}
.install-result-grid strong {
  font-size: 0.9rem;
  color: var(--color-text);
  font-weight: 500;
}
.install-result-grid span {
  font-size: 0.8rem;
  color: var(--color-success);
  font-weight: 500;
}
@media (max-width: 900px) {
  .install-layout {
    grid-template-columns: 1fr;
    margin: 1rem;
    gap: 1.5rem;
  }
  .install-sidebar {
    min-height: auto;
    position: static;
    padding: 1.5rem;
  }
  .install-steps {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin: 0.5rem 0;
  }
  .install-steps::before {
    display: none;
  }
  .install-step {
    flex: 1 1 auto;
    padding: 0.25rem 0.5rem;
  }
}

/* Modals */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(9, 9, 11, 0.3);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  animation: modalFadeIn 0.25s ease-out;
}
.modal-container {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  width: 90%;
  max-width: 720px;
  max-height: 85vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  padding: 2.25rem;
  position: relative;
  animation: modalSlideUp 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
.modal-close-btn {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  background: transparent;
  border: 0;
  color: var(--color-text-muted);
  cursor: pointer;
  width: 2rem;
  height: 2rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}
.modal-close-btn:hover {
  background: var(--color-primary-light);
  color: var(--color-text);
}

@keyframes modalFadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes modalSlideUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}