/**
 * Researcher Portal - Modern CSS Overlay
 * Enhances Bootstrap 3 + "The Project" theme with modern styling
 * Load AFTER custom.css in header_css.php
 */

/* ==========================================================================
   1. CSS Custom Properties
   ========================================================================== */

:root {
  /* NACOSTI Official Brand Colors */
  --rp-primary: #09B15B;
  --rp-primary-dark: #4D9C13;
  --rp-primary-light: #eaf7f0;
  --rp-nacosti-green: #09B15B;
  --rp-nacosti-mid-green: #509043;
  --rp-nacosti-light-green: #8AD8B0;
  --rp-accent: #E2E411;
  --rp-nacosti-olive: #95BA52;
  /* Neutrals */
  --rp-text: #2c3e50;
  --rp-text-muted: #6c757d;
  --rp-border: #e0e6ed;
  --rp-bg-light: #f8fafb;
  --rp-bg-white: #ffffff;
  /* Shadows & Radius */
  --rp-shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --rp-shadow-md: 0 4px 12px rgba(0,0,0,0.1);
  --rp-shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
  --rp-radius: 6px;
  --rp-radius-lg: 10px;
  --rp-transition: all 0.2s ease;
}

/* ==========================================================================
   2. Typography
   ========================================================================== */

body {
  color: var(--rp-text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.6;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--rp-text);
  font-weight: 600;
  letter-spacing: -0.01em;
}

label {
  font-weight: 500;
  color: var(--rp-text);
  margin-bottom: 6px;
  font-size: 13px;
}

/* ==========================================================================
   3. Form Controls
   ========================================================================== */

.form-control {
  border: 1px solid var(--rp-border);
  border-radius: var(--rp-radius);
  padding: 8px 12px;
  font-size: 14px;
  color: var(--rp-text);
  background-color: var(--rp-bg-white);
  box-shadow: var(--rp-shadow-sm);
  transition: var(--rp-transition);
  height: auto;
  min-height: 38px;
}

.form-control:focus {
  border-color: var(--rp-primary);
  box-shadow: 0 0 0 3px rgba(9, 177, 91, 0.15);
  outline: none;
}

.form-control.input-sm {
  min-height: 34px;
  padding: 6px 10px;
  font-size: 13px;
  border-radius: var(--rp-radius);
}

.form-control.input-lg {
  min-height: 44px;
  padding: 10px 14px;
  font-size: 15px;
}

textarea.form-control {
  min-height: 100px;
  resize: vertical;
}

/* Select2 */
.select2-container--default .select2-selection--single {
  border: 1px solid var(--rp-border) !important;
  border-radius: var(--rp-radius) !important;
  height: 38px !important;
  box-shadow: var(--rp-shadow-sm);
  transition: var(--rp-transition);
}

.select2-container--default .select2-selection--single:focus,
.select2-container--default.select2-container--focus .select2-selection--single {
  border-color: var(--rp-primary) !important;
  box-shadow: 0 0 0 3px rgba(9, 177, 91, 0.15);
}

.select2-container--default .select2-selection--single .select2-selection__rendered {
  line-height: 36px !important;
  padding-left: 12px;
  color: var(--rp-text);
}

.select2-container--default .select2-selection--single .select2-selection__arrow {
  height: 36px !important;
}

.select2-dropdown {
  border: 1px solid var(--rp-border);
  border-radius: var(--rp-radius);
  box-shadow: var(--rp-shadow-md);
}

.select2-results__option--highlighted {
  background-color: var(--rp-primary) !important;
}

/* ==========================================================================
   4. Form Groups
   ========================================================================== */

.form-group {
  margin-bottom: 20px;
}

/* ==========================================================================
   5. Buttons
   ========================================================================== */

.btn {
  border-radius: var(--rp-radius);
  font-weight: 500;
  padding: 8px 20px;
  font-size: 14px;
  letter-spacing: 0.01em;
  transition: var(--rp-transition);
  border: none;
  box-shadow: var(--rp-shadow-sm);
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--rp-shadow-md);
}

.btn:active {
  transform: translateY(0);
  box-shadow: var(--rp-shadow-sm);
}

.btn-default {
  background: var(--rp-bg-white);
  border: 1px solid var(--rp-border);
  color: var(--rp-text);
}

.btn-default:hover {
  background: var(--rp-bg-light);
  border-color: #ccd3db;
  color: var(--rp-text);
}

.btn-primary {
  background: var(--rp-primary);
  color: #fff;
}

.btn-primary:hover,
.btn-primary:focus {
  background: var(--rp-primary-dark);
  color: #fff;
}

.btn-success {
  background: var(--rp-nacosti-green);
}

.btn-success:hover,
.btn-success:focus {
  background: #4D9C13;
}

.btn-lg {
  padding: 12px 28px;
  font-size: 16px;
  border-radius: var(--rp-radius-lg);
}

.btn-sm {
  padding: 5px 14px;
  font-size: 12px;
}

/* ==========================================================================
   6. Panels / Cards
   ========================================================================== */

.panel {
  border: none;
  border-radius: var(--rp-radius-lg);
  box-shadow: var(--rp-shadow-sm);
  transition: var(--rp-transition);
  overflow: hidden;
}

.panel:hover {
  box-shadow: var(--rp-shadow-md);
}

.panel-heading {
  border-bottom: 1px solid var(--rp-border);
  padding: 16px 20px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--rp-radius-lg) var(--rp-radius-lg) 0 0 !important;
}

.panel-body {
  padding: 20px;
}

.panel-footer {
  background: var(--rp-bg-light);
  border-top: 1px solid var(--rp-border);
  padding: 14px 20px;
}

.panel-default > .panel-heading {
  background: var(--rp-bg-light);
  color: var(--rp-text);
}

.panel-primary > .panel-heading {
  background: var(--rp-primary);
}

/* ==========================================================================
   7. Wells
   ========================================================================== */

.well {
  border: 1px solid var(--rp-border);
  border-radius: var(--rp-radius-lg);
  background: var(--rp-bg-light);
  box-shadow: none;
  padding: 20px;
}

/* ==========================================================================
   8. Tables and DataTables
   ========================================================================== */

.table {
  border-collapse: separate;
  border-spacing: 0;
}

.table > thead > tr > th {
  background: var(--rp-bg-light);
  color: var(--rp-text);
  font-weight: 600;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  padding: 12px 15px;
  border-bottom: 2px solid var(--rp-border);
}

.table > tbody > tr > td {
  padding: 11px 15px;
  vertical-align: middle;
  border-top: 1px solid #f0f3f5;
  font-size: 13.5px;
}

.table > tbody > tr:hover > td {
  background-color: var(--rp-primary-light);
}

.table-striped > tbody > tr:nth-child(odd) > td {
  background-color: #fafcfc;
}

.table-striped > tbody > tr:nth-child(odd):hover > td {
  background-color: var(--rp-primary-light);
}

/* DataTables */
.dataTables_wrapper .dataTables_length select,
.dataTables_wrapper .dataTables_filter input {
  border: 1px solid var(--rp-border);
  border-radius: var(--rp-radius);
  padding: 5px 10px;
  transition: var(--rp-transition);
}

.dataTables_wrapper .dataTables_filter input:focus {
  border-color: var(--rp-primary);
  box-shadow: 0 0 0 3px rgba(9, 177, 91, 0.15);
  outline: none;
}

.dataTables_wrapper .dataTables_paginate .paginate_button {
  border-radius: var(--rp-radius) !important;
  margin: 0 2px;
  border: 1px solid var(--rp-border) !important;
  transition: var(--rp-transition);
}

.dataTables_wrapper .dataTables_paginate .paginate_button.current {
  background: var(--rp-primary) !important;
  color: #fff !important;
  border-color: var(--rp-primary) !important;
}

.dataTables_wrapper .dataTables_paginate .paginate_button:hover {
  background: var(--rp-primary-light) !important;
  color: var(--rp-primary) !important;
  border-color: var(--rp-primary) !important;
}

.dataTables_wrapper .dataTables_info {
  color: var(--rp-text-muted);
  font-size: 13px;
}

/* ==========================================================================
   9. Alerts
   ========================================================================== */

.alert {
  border: none;
  border-radius: var(--rp-radius);
  padding: 14px 18px;
  font-size: 14px;
  border-left: 4px solid transparent;
  box-shadow: var(--rp-shadow-sm);
}

.alert-success {
  background: #eafaf1;
  color: #1a7a42;
  border-left-color: var(--rp-nacosti-green);
}

.alert-info {
  background: #e8f6fd;
  color: #1a6b8a;
  border-left-color: #3498db;
}

.alert-warning {
  background: #fef9e7;
  color: #7d6608;
  border-left-color: #f1c40f;
}

.alert-danger {
  background: #fdf2f2;
  color: #922b21;
  border-left-color: #e74c3c;
}

.alert .close {
  opacity: 0.6;
  text-shadow: none;
}

.alert .close:hover {
  opacity: 1;
}

/* ==========================================================================
   10. Navigation & Header
   ========================================================================== */

/* --- Top Bar --- */
.rp-header-top {
  background: linear-gradient(135deg, #183B27, #018343) !important;
  border-bottom: 2px solid #E2E411 !important;
  padding: 0 !important;
  min-height: 56px;
}

.rp-header-top .rp-topbar-title {
  color: #fff !important;
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  line-height: 56px;
}

.rp-header-top .rp-topbar-title i {
  margin-right: 6px;
  font-size: 14px;
}

.rp-header-top .rp-topbar-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 16px;
  height: 56px;
}

.rp-header-top .rp-topbar-greeting {
  color: rgba(255,255,255,0.9) !important;
  font-size: 13px;
  font-weight: 600;
  margin-right: 8px;
}

.rp-header-top .rp-topbar-greeting i {
  margin-right: 4px;
}

.header-top.colored.rp-header-top a.rp-topbar-btn,
.rp-header-top a.rp-topbar-btn {
  display: inline-flex !important;
  align-items: center;
  gap: 6px;
  padding: 7px 20px;
  border-radius: 22px;
  font-size: 13px;
  font-weight: 700;
  text-decoration: none !important;
  transition: all 0.2s ease;
  border: 1.5px solid rgba(255,255,255,0.3);
  letter-spacing: 0.03em;
  line-height: 1.2;
}

.header-top.colored.rp-header-top a.rp-topbar-btn:hover,
.rp-header-top a.rp-topbar-btn:hover {
  text-decoration: none !important;
  transform: translateY(-1px);
  box-shadow: 0 3px 12px rgba(0,0,0,0.25);
}

.header-top.colored.rp-header-top a.rp-topbar-btn-profile,
.rp-header-top a.rp-topbar-btn-profile {
  background: rgba(255,255,255,0.15) !important;
  color: #fff !important;
  border-color: rgba(255,255,255,0.35);
}

.header-top.colored.rp-header-top a.rp-topbar-btn-profile:hover,
.rp-header-top a.rp-topbar-btn-profile:hover {
  background: rgba(255,255,255,0.3) !important;
  color: #fff !important;
  border-color: rgba(255,255,255,0.5);
}

.header-top.colored.rp-header-top a.rp-topbar-btn-logout,
.rp-header-top a.rp-topbar-btn-logout {
  background: rgba(231,76,60,0.85) !important;
  color: #fff !important;
  border-color: rgba(231,76,60,0.6);
}

.header-top.colored.rp-header-top a.rp-topbar-btn-logout:hover,
.rp-header-top a.rp-topbar-btn-logout:hover {
  background: rgba(231,76,60,1) !important;
  color: #fff !important;
  border-color: rgba(231,76,60,0.9);
}

/* --- Main Header --- */
.rp-main-header {
  background: #fff !important;
}

.header-container .header {
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.rp-site-slogan {
  color: var(--rp-text-muted) !important;
  font-size: 11px !important;
  letter-spacing: 0.02em;
}

/* --- Main Nav Links --- */
.rp-main-nav > li > a {
  font-weight: 600 !important;
  font-size: 13.5px !important;
  letter-spacing: 0.02em;
  color: var(--rp-text) !important;
  transition: all 0.2s ease !important;
  padding: 14px 18px !important;
  border-radius: 6px;
  margin: 0 2px;
}

.rp-main-nav > li > a:hover {
  color: var(--rp-primary) !important;
  background: var(--rp-primary-light) !important;
}

.rp-main-nav > li.active > a {
  color: var(--rp-primary) !important;
  background: var(--rp-primary-light) !important;
}

.rp-main-nav > li > a > i {
  margin-right: 4px;
  font-size: 14px;
}

.main-navigation .nav > li > a {
  font-weight: 500;
  letter-spacing: 0.01em;
  transition: var(--rp-transition);
}

.main-navigation .nav > li > a:hover {
  color: var(--rp-primary) !important;
}

/* --- Responsive top bar --- */
@media (max-width: 767px) {
  .rp-topbar-title {
    font-size: 10px;
    line-height: 36px;
    letter-spacing: 0.03em;
  }
  .rp-topbar-actions {
    height: 36px;
    gap: 4px;
  }
  .rp-topbar-greeting {
    display: none;
  }
  .rp-topbar-btn {
    padding: 4px 10px;
    font-size: 11px;
  }
  .rp-main-nav > li > a {
    padding: 10px 14px !important;
  }
}

.dropdown-menu {
  border: 1px solid var(--rp-border);
  border-radius: var(--rp-radius);
  box-shadow: var(--rp-shadow-lg);
  padding: 6px 0;
}

.dropdown-menu > li > a {
  padding: 8px 18px;
  font-size: 13.5px;
  transition: var(--rp-transition);
}

.dropdown-menu > li > a:hover {
  background: var(--rp-primary-light);
  color: var(--rp-primary);
}

/* ==========================================================================
   11. Modals
   ========================================================================== */

.modal-content {
  border: none;
  border-radius: var(--rp-radius-lg);
  box-shadow: var(--rp-shadow-lg);
}

.modal-header {
  border-bottom: 1px solid var(--rp-border);
  padding: 16px 20px;
}

.modal-body {
  padding: 20px;
}

.modal-footer {
  border-top: 1px solid var(--rp-border);
  padding: 14px 20px;
}

/* ==========================================================================
   12. Badges and Labels
   ========================================================================== */

.badge {
  border-radius: 12px;
  padding: 4px 10px;
  font-weight: 500;
  font-size: 11px;
  letter-spacing: 0.02em;
}

.label {
  border-radius: 4px;
  font-weight: 500;
  padding: 4px 8px;
}

/* ==========================================================================
   13. Progress Bars
   ========================================================================== */

.progress {
  border-radius: var(--rp-radius-lg);
  height: 8px;
  background: #ecf0f1;
  box-shadow: none;
  overflow: hidden;
}

.progress-bar {
  background: var(--rp-primary);
  border-radius: var(--rp-radius-lg);
}

/* ==========================================================================
   14. Breadcrumbs
   ========================================================================== */

.breadcrumb {
  background: var(--rp-bg-light);
  border-radius: var(--rp-radius);
  padding: 10px 16px;
  font-size: 13px;
}

.breadcrumb > li + li::before {
  color: var(--rp-text-muted);
}

.breadcrumb > .active {
  color: var(--rp-text-muted);
}

/* ==========================================================================
   15. Tooltips
   ========================================================================== */

.tooltip-inner {
  border-radius: var(--rp-radius);
  padding: 6px 12px;
  font-size: 12.5px;
  background: var(--rp-text);
}

/* ==========================================================================
   16. Separators
   ========================================================================== */

hr {
  border-top: 1px solid var(--rp-border);
  margin: 20px 0;
}

/* ==========================================================================
   17. Form Block (Profile page specific)
   ========================================================================== */

.form-block {
  border-radius: var(--rp-radius-lg);
  box-shadow: var(--rp-shadow-md);
  border: none;
}

/* ==========================================================================
   18. Utility Classes
   ========================================================================== */

.rp-card {
  background: var(--rp-bg-white);
  border-radius: var(--rp-radius-lg);
  box-shadow: var(--rp-shadow-sm);
  padding: 24px;
  margin-bottom: 20px;
  transition: var(--rp-transition);
}

.rp-card:hover {
  box-shadow: var(--rp-shadow-md);
}

.rp-divider {
  border: none;
  border-top: 1px solid var(--rp-border);
  margin: 24px 0;
}

.rp-section-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--rp-text);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--rp-primary);
  display: inline-block;
}

/* ==========================================================================
   19. Responsive
   ========================================================================== */

@media (max-width: 767px) {
  .panel-body {
    padding: 14px;
  }

  .form-control {
    font-size: 16px; /* prevents iOS zoom on focus */
  }

  .btn {
    padding: 10px 16px;
    width: 100%;
    margin-bottom: 8px;
  }

  .table > thead > tr > th,
  .table > tbody > tr > td {
    padding: 8px 10px;
    font-size: 12.5px;
  }

  .rp-card {
    padding: 16px;
  }
}

/* ==========================================================================
   Footer - NACOSTI Official Colors
   ========================================================================== */

.subfooter.default-bg {
  background-color: #3a6b2e !important;
  color: #fff;
}