/* OCOM Admissions CRM — Main Styles */

:root {
  /* OCOM Brand */
  --ocom-navy: #0A2432;
  --ocom-navy-light: #1a3a5c;
  --ocom-orange: #D0611E;
  --ocom-orange-dark: #B53C1E;
  --ocom-orange-light: #e8854a;

  /* Neutral palette */
  --bg-primary: #FFFFFF;
  --bg-secondary: #F5F5F5;
  --bg-tertiary: #EEEEEE;
  --text-primary: #212121;
  --text-secondary: #616161;
  --text-muted: #9E9E9E;
  --text-inverse: #FFFFFF;
  --border-color: #E0E0E0;
  --border-light: #F0F0F0;

  /* Status colors */
  --color-success: #1B8A4E;
  --color-success-bg: #e8f5e9;
  --color-warning: #FB8C00;
  --color-warning-bg: #fff3e0;
  --color-danger: #DC3545;
  --color-danger-bg: #fce4ec;
  --color-info: #1E88E5;
  --color-info-bg: #e3f2fd;

  /* Layout */
  --sidebar-width: 240px;
  --navbar-height: 56px;
  --border-radius: 8px;
  --border-radius-sm: 4px;
  --border-radius-lg: 12px;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);

  /* Typography */
  --font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  --font-size-xs: 11px;
  --font-size-sm: 13px;
  --font-size-base: 14px;
  --font-size-md: 16px;
  --font-size-lg: 20px;
  --font-size-xl: 24px;
  --font-size-xxl: 32px;

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

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

html, body {
  height: 100%;
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  color: var(--text-primary);
  background: var(--bg-secondary);
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--ocom-orange);
  text-decoration: none;
}
a:hover {
  color: var(--ocom-orange-dark);
}

/* ============================================
   LOGIN SCREEN
   ============================================ */

#app-login {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: linear-gradient(135deg, var(--ocom-navy) 0%, var(--ocom-navy-light) 100%);
}

.login-card {
  background: var(--bg-primary);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 48px 40px;
  text-align: center;
  max-width: 400px;
  width: 90%;
}

.login-card img {
  width: 120px;
  height: 120px;
  margin-bottom: 24px;
}

.login-card h1 {
  font-size: var(--font-size-lg);
  color: var(--ocom-navy);
  margin-bottom: 8px;
}

.login-card p {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-bottom: 32px;
}

.login-card .btn-google {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 32px;
  background: var(--ocom-navy);
  color: var(--text-inverse);
  border: none;
  border-radius: var(--border-radius);
  font-size: var(--font-size-base);
  font-family: var(--font-family);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.login-card .btn-google:hover {
  background: var(--ocom-navy-light);
}

.login-card .login-error {
  color: var(--color-danger);
  font-size: var(--font-size-sm);
  margin-top: 16px;
  display: none;
}

.login-card .login-loading {
  display: none;
  margin-top: 16px;
  color: var(--text-muted);
  font-size: var(--font-size-sm);
}

/* ============================================
   APP SHELL LAYOUT
   ============================================ */

#app-shell {
  display: none;
  min-height: 100vh;
}

/* Navbar */
#navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--navbar-height);
  background: var(--ocom-navy);
  color: var(--text-inverse);
  display: flex;
  align-items: center;
  padding: 0 20px;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

/* Sidebar */
#sidebar {
  position: fixed;
  top: var(--navbar-height);
  left: 0;
  bottom: 0;
  width: var(--sidebar-width);
  background: var(--bg-primary);
  border-right: 1px solid var(--border-color);
  overflow-y: auto;
  z-index: 90;
  transition: transform var(--transition-normal);
}

/* Main content */
#main-content {
  margin-left: var(--sidebar-width);
  margin-top: var(--navbar-height);
  padding: 24px;
  min-height: calc(100vh - var(--navbar-height));
}

/* ============================================
   PAGE HEADER
   ============================================ */

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.page-header h1 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--ocom-navy);
}

.page-header .actions {
  display: flex;
  gap: 8px;
}

/* ============================================
   LOADING / EMPTY STATES
   ============================================ */

.loading-spinner {
  display: inline-block;
  width: 32px;
  height: 32px;
  border: 3px solid var(--border-color);
  border-top-color: var(--ocom-orange);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.loading-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  color: var(--text-muted);
  gap: 16px;
}

.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}

.empty-state h3 {
  font-size: var(--font-size-md);
  margin-bottom: 8px;
  color: var(--text-secondary);
}

/* ============================================
   PLACEHOLDER PAGE (for stubs)
   ============================================ */

.placeholder-page {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 80px 20px;
  text-align: center;
}

.placeholder-page .icon {
  font-size: 48px;
  margin-bottom: 16px;
  opacity: 0.5;
}

.placeholder-page h2 {
  font-size: var(--font-size-xl);
  color: var(--ocom-navy);
  margin-bottom: 8px;
}

.placeholder-page p {
  color: var(--text-muted);
  font-size: var(--font-size-base);
}

/* ============================================
   RESPONSIVE
   ============================================ */

.sidebar-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-inverse);
  font-size: 24px;
  cursor: pointer;
  padding: 4px 8px;
  margin-right: 8px;
}

@media (max-width: 768px) {
  .sidebar-toggle {
    display: block;
  }

  #sidebar {
    transform: translateX(-100%);
  }

  #sidebar.open {
    transform: translateX(0);
    box-shadow: var(--shadow-lg);
  }

  #main-content {
    margin-left: 0;
  }

  .page-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
}