/* ==================================================
   SRKR Engineering College UI Design System
   Brand Maroon: #8c1532
   ================================================== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Poppins:wght@400;500;600;700&display=swap');

:root {
  /* ==================================================
     BRAND
  ================================================== */

  --bs-primary: #8c1532;
  --bs-primary-hover: #a81c3c;
  --bs-primary-active: #6e0f27;
  --bs-primary-soft: #f9eef1;

  --bs-secondary: #344054;
  --bs-secondary-soft: #f2f4f7;

  /* ==================================================
     BACKGROUNDS
  ================================================== */

  --bs-body-bg: #f8f9fb;
  --bs-surface: #ffffff;
  --bs-surface-alt: #f5f7fa;
  --bs-surface-hover: #eef2f6;

  /* ==================================================
     TEXT
  ================================================== */

  --bs-text: #101828;
  --bs-text-secondary: #475467;
  --bs-text-muted: #667085;
  --bs-text-disabled: #98a2b3;
  --bs-text-white: #ffffff;

  /* ==================================================
     STATUS
  ================================================== */

  --bs-success: #16a34a;
  --bs-success-bg: #ecfdf3;

  --bs-warning: #d97706;
  --bs-warning-bg: #fff7ed;

  --bs-danger: #dc2626;
  --bs-danger-bg: #fef2f2;

  --bs-info: #0284c7;
  --bs-info-bg: #f0f9ff;

  /* ==================================================
     BORDERS
  ================================================== */

  --bs-border-color: #e4e7ec;
  --bs-border-light: #f2f4f7;

  /* ==================================================
     BORDER RADIUS
  ================================================== */

  --bs-radius: 0px;
  --bs-radius-sm: 0px;
  --bs-radius-lg: 0px;
  --bs-radius-xl: 0px;

  /* ==================================================
     SHADOWS
  ================================================== */

  --bs-shadow-xs: 0 1px 2px rgba(16,24,40,.03);
  --bs-shadow-sm: 0 2px 8px rgba(16,24,40,.05);
  --bs-shadow: 0 6px 18px rgba(16,24,40,.06);
  --bs-shadow-lg: 0 12px 30px rgba(16,24,40,.08);

  /* ==================================================
     TYPOGRAPHY
  ================================================== */

  --bs-font-family: "Inter", "Poppins", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --bs-font-size-xs: .75rem;
  --bs-font-size-sm: .875rem;
  --bs-font-size: 1rem;
  --bs-font-size-lg: 1.125rem;
  --bs-font-size-xl: 1.25rem;
  --bs-font-size-2xl: 1.5rem;

  --bs-font-weight-normal: 400;
  --bs-font-weight-medium: 500;
  --bs-font-weight-semibold: 600;
  --bs-font-weight-bold: 700;

  --bs-line-height: 1.5;

  /* Legacy theme aliases mapped directly to new SRKR Maroon tokens */
  --primary: var(--bs-primary);
  --primary-dk: var(--bs-primary-active);
  --primary-lt: var(--bs-primary-hover);
  --secondary: var(--bs-secondary);
  --secondary-dk: var(--bs-secondary-soft);
  --secondary-lt: var(--bs-surface-alt);
  --c-primary: var(--bs-primary);
  --c-primary-dk: var(--bs-primary-active);
  --c-primary-lt: var(--bs-primary-hover);
  --c-secondary: #ffffff;
  --c-secondary-dk: var(--bs-surface-hover);
  --c-secondary-lt: #ffffff;
  --c-bg: var(--bs-body-bg);
  --c-bg-alt: var(--bs-surface-alt);
  --c-surface: var(--bs-surface);
  --c-border: var(--bs-border-color);
  --c-text: var(--bs-text);
  --c-text-muted: var(--bs-text-muted);
  --f-display: "Poppins", "Inter", sans-serif;
  --f-body: var(--bs-font-family);
  --r-sm: var(--bs-radius-sm);
  --r-md: var(--bs-radius);
  --r-lg: var(--bs-radius-lg);
  --r-xl: var(--bs-radius-xl);
  --shadow-sm: var(--bs-shadow-sm);
  --shadow-md: var(--bs-shadow);
  --shadow-lg: var(--bs-shadow-lg);
  --t-fast: .15s ease-in-out;
  --t-base: .2s ease-in-out;
  --t-slow: .3s ease-in-out;
}

body {
    font-family: var(--bs-font-family);
    background-color: var(--bs-body-bg);
    color: var(--bs-text);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

h1, h2, h3, h4, h5, h6, .navbar-brand {
    font-family: "Poppins", "Inter", sans-serif;
    font-weight: var(--bs-font-weight-semibold);
    color: var(--bs-text);
}

/* Header Banner with SRKR Maroon */
.header-banner {
    background-color: var(--bs-primary);
    color: var(--bs-text-white);
    padding: 1.25rem 1rem;
    border-bottom: 4px solid var(--bs-primary-active);
    box-shadow: var(--bs-shadow-sm);
}

.header-banner h1 {
    font-size: 1.75rem;
    letter-spacing: 0.5px;
    margin: 0;
    color: var(--bs-text-white);
    font-weight: var(--bs-font-weight-bold);
}

.header-banner p {
    color: rgba(255, 255, 255, 0.85) !important;
}

/* Cards & Surface Containers */
.glass-card, .card {
    background: var(--bs-surface);
    border: 1px solid var(--bs-border-color);
    border-radius: var(--bs-radius);
    box-shadow: var(--bs-shadow-sm);
    transition: all var(--t-base);
    padding: 1.5rem;
}

.glass-card:hover {
    box-shadow: var(--bs-shadow);
    border-color: var(--bs-primary-soft);
}

/* Premium Tables */
.table-premium {
    border-radius: var(--bs-radius);
    overflow: hidden;
    border: 1px solid var(--bs-border-color);
    box-shadow: var(--bs-shadow-xs);
    background: var(--bs-surface);
}

.table-premium th {
    background-color: var(--bs-surface-alt) !important;
    color: var(--bs-secondary) !important;
    font-weight: var(--bs-font-weight-semibold);
    text-transform: uppercase;
    font-size: var(--bs-font-size-xs);
    letter-spacing: 0.5px;
    border-bottom: 2px solid var(--bs-border-color);
    padding: 0.85rem 1rem;
}

.table-premium td {
    padding: 0.85rem 1rem;
    vertical-align: middle;
    border-color: var(--bs-border-light);
    background-color: var(--bs-surface);
    color: var(--bs-text);
}

.table-premium tr:hover td {
    background-color: var(--bs-surface-hover);
}

/* Buttons */
.btn-primary, .btn-primary-custom {
    background-color: var(--bs-primary) !important;
    color: var(--bs-text-white) !important;
    border: 1px solid var(--bs-primary) !important;
    border-radius: var(--bs-radius);
    padding: 0.5rem 1.25rem;
    font-family: var(--bs-font-family);
    font-weight: var(--bs-font-weight-medium);
    transition: all var(--t-fast);
    box-shadow: var(--bs-shadow-xs);
}

.btn-primary:hover, .btn-primary-custom:hover {
    background-color: var(--bs-primary-hover) !important;
    border-color: var(--bs-primary-hover) !important;
    color: var(--bs-text-white) !important;
    box-shadow: var(--bs-shadow-sm);
}

.btn-primary:active, .btn-primary-custom:active {
    background-color: var(--bs-primary-active) !important;
    border-color: var(--bs-primary-active) !important;
}

.btn-outline-primary {
    color: var(--bs-primary) !important;
    border-color: var(--bs-primary) !important;
    border-radius: var(--bs-radius);
    font-weight: var(--bs-font-weight-medium);
    background-color: transparent;
}

.btn-outline-primary:hover {
    background-color: var(--bs-primary) !important;
    color: var(--bs-text-white) !important;
    border-color: var(--bs-primary) !important;
}

.btn-secondary {
    background-color: var(--bs-secondary) !important;
    border-color: var(--bs-secondary) !important;
    color: var(--bs-text-white) !important;
    border-radius: var(--bs-radius);
}

.btn-secondary:hover {
    background-color: #242d3c !important;
    border-color: #242d3c !important;
}

/* Color & Text Utilities */
.text-primary {
    color: var(--bs-primary) !important;
}

.bg-primary {
    background-color: var(--bs-primary) !important;
    color: var(--bs-text-white) !important;
}

.bg-primary-subtle {
    background-color: var(--bs-primary-soft) !important;
    color: var(--bs-primary) !important;
    border-color: rgba(140, 21, 50, 0.2) !important;
}

.border-primary {
    border-color: var(--bs-primary) !important;
}

/* Status Badges */
.badge.bg-success-subtle, .badge-success {
    background-color: var(--bs-success-bg) !important;
    color: var(--bs-success) !important;
    border: 1px solid rgba(22, 163, 74, 0.2) !important;
}

.badge.bg-warning-subtle, .badge-warning {
    background-color: var(--bs-warning-bg) !important;
    color: var(--bs-warning) !important;
    border: 1px solid rgba(217, 119, 6, 0.2) !important;
}

.badge.bg-danger-subtle, .badge-danger {
    background-color: var(--bs-danger-bg) !important;
    color: var(--bs-danger) !important;
    border: 1px solid rgba(220, 38, 38, 0.2) !important;
}

.badge.bg-secondary-subtle {
    background-color: var(--bs-secondary-soft) !important;
    color: var(--bs-secondary) !important;
    border: 1px solid var(--bs-border-color) !important;
}

/* Form Styling */
.form-control, .form-select, .form-control-custom {
    border: 1px solid var(--bs-border-color);
    border-radius: var(--bs-radius);
    padding: 0.5rem 0.85rem;
    font-size: var(--bs-font-size-sm);
    background-color: var(--bs-surface);
    color: var(--bs-text);
    transition: all var(--t-fast);
}

.form-control:focus, .form-select:focus, .form-control-custom:focus {
    background-color: var(--bs-surface);
    border-color: var(--bs-primary);
    box-shadow: 0 0 0 3px rgba(140, 21, 50, 0.12);
    color: var(--bs-text);
    outline: none;
}

/* Radio Buttons & Checkboxes Overrides */
.form-check-input {
    border: 1.5px solid var(--bs-border-color);
    background-color: var(--bs-surface);
}

.form-check-input:focus {
    border-color: var(--bs-primary) !important;
    outline: 0;
    box-shadow: 0 0 0 0.2rem rgba(140, 21, 50, 0.15) !important;
}

.form-check-input:checked {
    background-color: var(--bs-primary) !important;
    border-color: var(--bs-primary) !important;
}

.form-check-input[type="radio"]:checked {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='-4 -4 8 8'%3e%3ccircle r='2' fill='%23fff'/%3e%3c/svg%3e") !important;
}

.form-check-input[type="checkbox"]:checked {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3e%3cpath fill='none' stroke='%23fff' stroke-linecap='round' stroke-linejoin='round' stroke-width='3' d='m6 10 3 3 6-6'/%3e%3c/svg%3e") !important;
}

/* Questionnaire Custom Radio Option Switcher */
.dropdown-el {
    display: inline-flex;
    gap: 8px;
}

.dropdown-el input[type="radio"] {
    display: none;
}

.dropdown-el label {
    padding: 8px 18px;
    border: 1px solid var(--bs-border-color);
    border-radius: var(--bs-radius);
    cursor: pointer;
    font-weight: var(--bs-font-weight-medium);
    font-size: var(--bs-font-size-sm);
    transition: all var(--t-fast);
    background-color: var(--bs-surface);
    color: var(--bs-text-secondary);
}

.dropdown-el label:hover {
    background-color: var(--bs-primary-soft);
    color: var(--bs-primary);
    border-color: rgba(140, 21, 50, 0.3);
}

.dropdown-el input[type="radio"]:checked + label {
    background-color: var(--bs-primary) !important;
    color: var(--bs-text-white) !important;
    border-color: var(--bs-primary) !important;
    box-shadow: var(--bs-shadow-xs);
}

/* Navigation Link Overrides */
.nav-pills .nav-link {
    color: var(--bs-secondary);
    border-radius: var(--bs-radius);
    font-weight: var(--bs-font-weight-medium);
    padding: 0.6rem 1rem;
    transition: all var(--t-fast);
}

.nav-pills .nav-link.active {
    background-color: var(--bs-primary) !important;
    color: var(--bs-text-white) !important;
    font-weight: var(--bs-font-weight-semibold);
    box-shadow: var(--bs-shadow-xs);
}

.nav-pills .nav-link:hover:not(.active) {
    background-color: var(--bs-primary-soft);
    color: var(--bs-primary);
}

/* List group nav items (Admin Header) */
.list-group-item {
    border-color: var(--bs-border-light);
    color: var(--bs-text-secondary);
    font-weight: var(--bs-font-weight-medium);
    transition: all var(--t-fast);
}

.list-group-item.active {
    background-color: var(--bs-primary) !important;
    border-color: var(--bs-primary) !important;
    color: var(--bs-text-white) !important;
    font-weight: var(--bs-font-weight-semibold);
}

.list-group-item:hover:not(.active) {
    background-color: var(--bs-primary-soft);
    color: var(--bs-primary);
}

/* Admin Panel Explicit SRKR Maroon Theme Enhancements */
.admin-sidebar .nav-link {
    border-radius: var(--bs-radius);
    color: var(--bs-text-secondary);
    font-size: var(--bs-font-size-sm);
    transition: all var(--t-fast);
}

.admin-sidebar .nav-link.active {
    background-color: var(--bs-primary) !important;
    color: var(--bs-text-white) !important;
    border-left: 4px solid var(--bs-primary-active) !important;
    font-weight: var(--bs-font-weight-semibold);
    box-shadow: var(--bs-shadow-xs);
}

.admin-sidebar .nav-link:hover:not(.active) {
    background-color: var(--bs-primary-soft) !important;
    color: var(--bs-primary) !important;
}

/* Card Filter Bar Overrides */
.card-filter-bar {
    background-color: var(--bs-surface-alt) !important;
    border: 1px solid var(--bs-border-color) !important;
    border-top: 3px solid var(--bs-primary) !important;
}

/* Footer Styling within Theme Tokens */
footer {
    margin-top: auto;
    background-color: var(--bs-secondary) !important;
    color: var(--bs-secondary-soft) !important;
    padding: 1.25rem 0;
    font-size: var(--bs-font-size-sm);
    border-top: 3px solid var(--bs-primary);
}

footer p {
    color: var(--bs-secondary-soft) !important;
}

footer a {
    color: var(--bs-text-white) !important;
    text-decoration: none;
    font-weight: var(--bs-font-weight-medium);
    transition: color var(--t-fast);
}

footer a:hover {
    color: var(--bs-primary-soft) !important;
    text-decoration: underline;
}

/* DataTables Custom Styling */
.dataTables_wrapper .dataTables_filter input {
    border-radius: var(--bs-radius);
    border: 1px solid var(--bs-border-color);
    padding: 0.35rem 0.75rem;
    font-size: var(--bs-font-size-sm);
    outline: none;
    background-color: var(--bs-surface);
}

.dataTables_wrapper .dataTables_filter input:focus {
    border-color: var(--bs-primary);
    box-shadow: 0 0 0 3px rgba(140, 21, 50, 0.12);
}

.dataTables_wrapper .page-item.active .page-link {
    background-color: var(--bs-primary) !important;
    border-color: var(--bs-primary) !important;
    color: var(--bs-text-white) !important;
}

.dataTables_wrapper .page-item .page-link {
    color: var(--bs-secondary);
    border-radius: var(--bs-radius);
}