/* Denver O&G Golf League - Main Stylesheet */

/* ============================================================================
   CSS Custom Properties (Theme Variables)
   ============================================================================ */
:root {
  /* Colors */
  --color-primary: #1a472a;          /* Dark green */
  --color-primary-light: #2d6b3f;    /* Lighter green */
  --color-accent: #ffd100;           /* Masters yellow */
  --color-accent-light: #ffe566;     /* Lighter Masters yellow */
  --color-white: #ffffff;
  --color-light-gray: #f5f5f5;
  --color-medium-gray: #e0e0e0;
  --color-dark-gray: #333333;
  --color-text: #222222;
  --color-text-light: #666666;
  --color-error: #dc2626;
  --color-success: #16a34a;
  --color-warning: #ea580c;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;

  /* Typography */
  --font-family-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
    sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;

  /* Border radius */
  --border-radius-sm: 0.375rem;
  --border-radius-md: 0.5rem;
  --border-radius-lg: 0.75rem;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);

  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 200ms ease-in-out;
  --transition-slow: 300ms ease-in-out;
}

/* ============================================================================
   Global Styles
   ============================================================================ */

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family-sans);
  font-size: var(--font-size-base);
  color: var(--color-text);
  background-color: var(--color-white);
  line-height: 1.6;
}

/* ============================================================================
   Typography
   ============================================================================ */

h1 {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  margin-bottom: var(--spacing-lg);
  color: var(--color-primary);
}

h2 {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  color: var(--color-primary);
}

h3 {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  color: var(--color-primary);
}

h4 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--color-primary);
}

p {
  margin-bottom: var(--spacing-md);
  color: var(--color-text);
}

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

a:hover {
  color: var(--color-accent-light);
  text-decoration: underline;
}

/* ============================================================================
   Forms and Inputs
   ============================================================================ */

form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

label {
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
  display: block;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="tel"],
input[type="number"],
input[type="date"],
input[type="time"],
select,
textarea {
  width: 100%;
  padding: var(--spacing-md);
  border: 1px solid var(--color-medium-gray);
  border-radius: var(--border-radius-md);
  font-family: inherit;
  font-size: var(--font-size-base);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
input[type="tel"]:focus,
input[type="number"]:focus,
input[type="date"]:focus,
input[type="time"]:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(255, 209, 0, 0.1);
}

input::placeholder,
textarea::placeholder {
  color: var(--color-text-light);
}

select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%231a472a' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--spacing-md) center;
  padding-right: 2.5rem;
}

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

/* ============================================================================
   Buttons
   ============================================================================ */

button,
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-lg);
  border: none;
  border-radius: var(--border-radius-md);
  font-family: inherit;
  font-size: var(--font-size-base);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  text-decoration: none;
}

.btn-primary,
button[type="submit"] {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.btn-primary:hover,
button[type="submit"]:hover {
  background-color: var(--color-primary-light);
  box-shadow: var(--shadow-md);
}

.btn-primary:active,
button[type="submit"]:active {
  transform: scale(0.98);
}

.btn-secondary {
  background-color: var(--color-accent);
  color: var(--color-primary);
  font-weight: 700;
}

.btn-secondary:hover {
  background-color: var(--color-accent-light);
  box-shadow: var(--shadow-md);
}

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

.btn-outline {
  background-color: transparent;
  border: 2px solid var(--color-primary);
  color: var(--color-primary);
}

.btn-outline:hover {
  background-color: var(--color-light-gray);
}

.btn-danger {
  background-color: var(--color-error);
  color: var(--color-white);
}

.btn-danger:hover {
  background-color: #b91c1c;
  box-shadow: var(--shadow-md);
}

.btn-success {
  background-color: var(--color-success);
  color: var(--color-white);
}

.btn-success:hover {
  background-color: #15803d;
  box-shadow: var(--shadow-md);
}

.btn-sm {
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-sm);
}

.btn-lg {
  padding: var(--spacing-lg) var(--spacing-xl);
  font-size: var(--font-size-lg);
}

.btn-block {
  width: 100%;
}

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

/* ============================================================================
   Navigation
   ============================================================================ */

nav {
  background-color: var(--color-primary);
  color: var(--color-white);
  box-shadow: var(--shadow-md);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--spacing-md) var(--spacing-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-md);
}

.nav-brand {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-white);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  justify-content: center;
  text-align: center;
}

.nav-brand-icon {
  font-size: 1.5rem;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
  align-items: center;
}

.nav-menu a,
.nav-menu button {
  color: var(--color-white);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-fast);
  border: none;
  background: none;
  cursor: pointer;
  padding: 0;
  font-family: inherit;
  font-size: inherit;
}

.nav-menu a:hover,
.nav-menu button:hover {
  color: var(--color-accent);
}

.nav-user {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  font-size: var(--font-size-sm);
}

.nav-user-name {
  font-weight: 600;
  color: var(--color-accent);
}

/* ============================================================================
   Cards and Containers
   ============================================================================ */

.card {
  background-color: var(--color-white);
  border: 1px solid var(--color-medium-gray);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
}

.card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-accent);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-lg);
  border-bottom: 2px solid var(--color-medium-gray);
  padding-bottom: var(--spacing-md);
}

.card-header h2 {
  margin: 0;
}

.card-body {
  margin-bottom: var(--spacing-md);
}

.card-footer {
  border-top: 1px solid var(--color-medium-gray);
  padding-top: var(--spacing-md);
  display: flex;
  justify-content: flex-end;
  gap: var(--spacing-sm);
}

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--spacing-xl) var(--spacing-lg);
}

.container-sm {
  max-width: 600px;
  margin: 0 auto;
  padding: var(--spacing-xl) var(--spacing-lg);
}

/* ============================================================================
   Grid and Layout
   ============================================================================ */

.grid {
  display: grid;
  gap: var(--spacing-lg);
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.flex {
  display: flex;
  gap: var(--spacing-md);
}

.flex-between {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.flex-center {
  display: flex;
  justify-content: center;
  align-items: center;
}

.flex-col {
  flex-direction: column;
}

/* ============================================================================
   Tables
   ============================================================================ */

table {
  width: 100%;
  border-collapse: collapse;
  background-color: var(--color-white);
  border: 1px solid var(--color-medium-gray);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
}

th {
  background-color: var(--color-primary);
  color: var(--color-white);
  padding: var(--spacing-md);
  text-align: left;
  font-weight: 700;
  border: none;
}

td {
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--color-medium-gray);
}

tbody tr:last-child td {
  border-bottom: none;
}

tbody tr:hover {
  background-color: var(--color-light-gray);
}

tbody tr.selected {
  background-color: rgba(255, 209, 0, 0.1);
}

/* ============================================================================
   Alerts and Messages
   ============================================================================ */

.alert {
  padding: var(--spacing-md);
  border-radius: var(--border-radius-md);
  margin-bottom: var(--spacing-md);
  border-left: 4px solid;
  display: flex;
  gap: var(--spacing-md);
  align-items: flex-start;
}

.alert-info {
  background-color: #f0f9ff;
  border-color: #0284c7;
  color: #0c4a6e;
}

.alert-success {
  background-color: #f0fdf4;
  border-color: var(--color-success);
  color: #166534;
}

.alert-warning {
  background-color: #fef3c7;
  border-color: var(--color-warning);
  color: #92400e;
}

.alert-error {
  background-color: #fef2f2;
  border-color: var(--color-error);
  color: #991b1b;
}

.alert-icon {
  flex-shrink: 0;
  font-size: var(--font-size-lg);
  margin-top: 2px;
}

.alert-content {
  flex: 1;
}

.alert-content h4 {
  margin: 0 0 var(--spacing-xs) 0;
  color: inherit;
}

.alert-content p {
  margin: 0;
  font-size: var(--font-size-sm);
}

/* ============================================================================
   Loading States and Spinners
   ============================================================================ */

.loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid rgba(255, 209, 0, 0.3);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.loading-full {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 300px;
  color: var(--color-text-light);
}

.loading-full .loading {
  width: 40px;
  height: 40px;
  margin-right: var(--spacing-md);
}

/* ============================================================================
   Badges and Tags
   ============================================================================ */

.badge {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: 9999px;
  font-size: var(--font-size-sm);
  font-weight: 600;
  white-space: nowrap;
  line-height: 1.4;
}

.badge-primary {
  background-color: rgba(26, 71, 42, 0.1);
  color: var(--color-primary);
}

.badge-accent {
  background-color: rgba(255, 209, 0, 0.1);
  color: var(--color-accent);
}

.badge-success {
  background-color: rgba(22, 163, 74, 0.1);
  color: var(--color-success);
}

.badge-warning {
  background-color: rgba(234, 88, 12, 0.1);
  color: var(--color-warning);
}

.badge-error {
  background-color: rgba(220, 38, 38, 0.1);
  color: var(--color-error);
}

/* ============================================================================
   Tabs
   ============================================================================ */

.tabs {
  display: flex;
  gap: var(--spacing-md);
  border-bottom: 2px solid var(--color-medium-gray);
  margin-bottom: var(--spacing-lg);
  flex-wrap: wrap;
}

.tab {
  padding: var(--spacing-md) var(--spacing-lg);
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
  font-size: inherit;
  font-weight: 600;
  color: var(--color-text-light);
  border-bottom: 3px solid transparent;
  transition: all var(--transition-fast);
}

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

.tab.active {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
  animation: fadeIn var(--transition-fast);
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* ============================================================================
   Modals and Overlays
   ============================================================================ */

.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 2000;
  align-items: center;
  justify-content: center;
}

.modal.active {
  display: flex;
}

.modal-content {
  background-color: var(--color-white);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-2xl);
  max-width: 500px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-xl);
  animation: slideIn var(--transition-base);
}

@keyframes slideIn {
  from {
    transform: translateY(-50px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-lg);
  border-bottom: 2px solid var(--color-medium-gray);
  padding-bottom: var(--spacing-md);
}

.modal-header h2 {
  margin: 0;
}

.modal-close {
  background: none;
  border: none;
  cursor: pointer;
  font-size: var(--font-size-xl);
  color: var(--color-text-light);
  padding: 0;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-close:hover {
  color: var(--color-primary);
}

.modal-body {
  margin-bottom: var(--spacing-lg);
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: var(--spacing-md);
  border-top: 1px solid var(--color-medium-gray);
  padding-top: var(--spacing-lg);
}

/* ============================================================================
   Empty States
   ============================================================================ */

.empty-state {
  text-align: center;
  padding: var(--spacing-3xl) var(--spacing-lg);
  color: var(--color-text-light);
}

.empty-state-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-lg);
}

.empty-state h3 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.empty-state p {
  margin-bottom: var(--spacing-lg);
}

/* ============================================================================
   Utility Classes
   ============================================================================ */

.mt-0 { margin-top: 0; }
.mt-xs { margin-top: var(--spacing-xs); }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-0 { margin-bottom: 0; }
.mb-xs { margin-bottom: var(--spacing-xs); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.text-center { text-align: center; }
.text-right { text-align: right; }
.text-left { text-align: left; }

.text-sm { font-size: var(--font-size-sm); }
.text-lg { font-size: var(--font-size-lg); }

.text-muted { color: var(--color-text-light); }
.text-primary { color: var(--color-primary); }
.text-accent { color: var(--color-accent); }
.text-error { color: var(--color-error); }
.text-success { color: var(--color-success); }

.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }

.hidden { display: none !important; }
.visible { display: block !important; }

.opacity-50 { opacity: 0.5; }
.opacity-75 { opacity: 0.75; }

/* ============================================================================
   Responsive Design
   ============================================================================ */

@media (max-width: 768px) {
  :root {
    --font-size-3xl: 1.75rem;
    --font-size-2xl: 1.25rem;
    --font-size-xl: 1.125rem;
  }

  .container,
  .container-sm {
    padding: var(--spacing-lg) var(--spacing-md);
  }

  .nav-container {
    padding: var(--spacing-md);
  }

  .nav-menu {
    gap: var(--spacing-md);
  }

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

  .tabs {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .modal-content {
    width: 95%;
    padding: var(--spacing-lg);
  }

  table {
    font-size: var(--font-size-sm);
  }

  td,
  th {
    padding: var(--spacing-sm);
  }

  table td .badge {
    padding: 2px var(--spacing-sm);
    font-size: 0.75rem;
  }

  .btn {
    padding: var(--spacing-md);
    font-size: var(--font-size-sm);
  }
}

@media (max-width: 480px) {
  :root {
    --spacing-lg: 1rem;
    --spacing-xl: 1.5rem;
  }

  h1 {
    font-size: var(--font-size-2xl);
  }

  .card {
    padding: var(--spacing-md);
  }

  .flex-between {
    flex-direction: column;
    align-items: flex-start;
  }

  .modal-footer {
    flex-direction: column-reverse;
  }

  .modal-footer button {
    width: 100%;
  }
}