/* Green Rewards Platform - Main Stylesheet */

:root {
    --primary: #10b981;
    --primary-dark: #059669;
    --secondary: #3b82f6;
    --success: #22c55e;
    --warning: #f59e0b;
    --danger: #ef4444;
    --dark: #1f2937;
    --light: #f3f4f6;
    --white: #ffffff;
    --gray: #6b7280;
    --border: #e5e7eb;
}

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

html {
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--dark);
    background: var(--light);
    overflow-x: hidden;
}

img,
video,
svg {
    max-width: 100%;
    height: auto;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navbar */
.navbar {
    background: var(--white);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.nav-container {
    gap: 1rem;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary);
    text-decoration: none;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 1.5rem;
    align-items: center;
}

.nav-panel {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-left: auto;
}

.nav-links {
    flex-wrap: wrap;
}

.nav-user-area {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex: 0 0 auto;
}

.nav-guest-area {
    margin-left: 0.5rem;
}

.profile-action {
    display: flex;
    align-items: center;
    flex: 0 0 auto;
}

.profile-summary {
    display: none;
    align-items: center;
    gap: 0.65rem;
    padding: 0.45rem 0.7rem;
    border-radius: 14px;
    border: 1px solid var(--border);
    background: var(--white);
    text-decoration: none;
    min-width: 0;
    max-width: 100%;
}

.profile-summary:hover {
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.profile-summary .user-name {
    max-width: 140px;
}

.profile-summary .role-badge {
    flex-shrink: 0;
}

.profile-icon-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.75rem;
    height: 2.75rem;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: var(--white);
    color: var(--dark);
    font-size: 1.35rem;
    text-decoration: none;
    transition: transform 0.2s ease, box-shadow 0.2s ease, color 0.2s ease, border-color 0.2s ease;
    flex: 0 0 auto;
}

.profile-icon-link:hover {
    color: var(--primary);
    border-color: rgba(16, 185, 129, 0.28);
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    transform: translateY(-1px);
}

.profile-icon-link:focus-visible {
    outline: 3px solid rgba(16, 185, 129, 0.22);
    outline-offset: 2px;
}

.nav-toggle {
    display: none;
    border: 1px solid var(--border);
    background: var(--white);
    color: var(--dark);
    border-radius: 8px;
    padding: 0.4rem 0.7rem;
    font-size: 1.25rem;
    line-height: 1;
    cursor: pointer;
}

.nav-menu a {
    text-decoration: none;
    color: var(--dark);
    font-weight: 500;
    transition: color 0.3s;
}

.nav-dropdown {
    position: relative;
}

.nav-dropdown summary {
    list-style: none;
    cursor: pointer;
    color: var(--dark);
    font-weight: 500;
}

.nav-dropdown summary::-webkit-details-marker {
    display: none;
}

.nav-dropdown summary::after {
    content: ' \25BE';
    font-size: 0.8rem;
}

.nav-dropdown-menu {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    min-width: 180px;
    display: none;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 10px;
    box-shadow: 0 10px 24px rgba(0,0,0,0.12);
    padding: 0.35rem;
    z-index: 1100;
}

.nav-dropdown[open] .nav-dropdown-menu {
    display: block;
}

.nav-dropdown-menu a {
    display: block;
    padding: 0.5rem 0.6rem;
    border-radius: 8px;
}

.nav-dropdown-menu a:hover {
    background: var(--light);
}

.nav-menu a:hover {
    color: var(--primary);
}

.points-badge {
    background: linear-gradient(135deg, var(--warning), #f97316);
    color: white;
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-weight: bold;
    font-size: 0.9rem;
}

.role-badge {
    background: var(--primary);
    color: white;
    padding: 0.3rem 0.6rem;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 600;
}

.user-name {
    color: var(--dark);
    font-weight: 600;
    display: block;
    max-width: 140px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.points-badge,
.points-badge:hover,
.points-badge:visited {
    text-decoration: none;
}

.points-badge {
    flex-shrink: 0;
}

.btn-logout {
    background: var(--danger) !important;
    color: white !important;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    text-decoration: none;
}

/* Main Content */
.main-content {
    min-height: calc(100vh - 200px);
    padding: 2rem 0;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.7rem 1.5rem;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    text-align: center;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
}

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

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

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

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

.btn-edit {
    background: #008CBA;
    color: white;
}

.btn-edit:hover {
    background: #0077a1;
    color: white;
}

.btn-delete {
    background: #f44336;
    color: white;
}

.btn-delete:hover {
    background: #da190b;
    color: white;
}

.btn-activate {
    background: #04AA6D;
    color: white;
}

.btn-activate:hover {
    background: #03915d;
    color: white;
}

.btn-deactivate {
    background: #f4c542;
    color: #2b2b2b;
}

.btn-deactivate:hover {
    background: #e5b72f;
    color: #2b2b2b;
}

.btn-block {
    width: 100%;
    display: block;
}

.btn-sm {
    padding: 0.4rem 0.8rem;
    font-size: 0.875rem;
}

.btn-outline-warning {
    background: transparent;
    color: var(--warning);
    border: 1px solid currentColor;
}

.btn-outline-warning:hover {
    background: var(--warning);
    color: white;
}

.text-primary {
    color: var(--secondary);
}

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

.stack-list {
    display: grid;
    gap: 1rem;
}

.stack-list-tight {
    gap: 0.8rem;
}

.stack-block {
    margin: 1rem 0;
}

.responsive-row {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 0.75rem;
}

.responsive-row-border {
    padding: 0.8rem 0;
    border-bottom: 1px solid var(--border);
}

.responsive-row-border:last-child {
    border-bottom: 0;
}

.responsive-row-value {
    text-align: right;
    min-width: 0;
}

.responsive-row-grow {
    flex: 1;
    min-width: 0;
}

.responsive-row-value strong {
    overflow-wrap: anywhere;
}

.responsive-actions-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.5rem;
}

.responsive-actions-grid .btn {
    width: 100%;
}

.table-responsive .admin-top-performers-table {
    min-width: 680px;
}

.admin-top-performers-table td strong {
    overflow-wrap: anywhere;
}

.admin-dashboard-secondary-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: start;
}

.admin-dashboard-secondary-cards > .card {
    min-width: 0;
}

.content-panel {
    padding: 1rem;
    border-radius: 8px;
    background: var(--light);
    border-left: 3px solid var(--primary);
}

.content-panel-accent {
    border-left-width: 4px;
    background: #fffbeb;
    border-left-color: var(--warning);
}

.content-panel-top {
    align-items: flex-start;
}

.content-panel-meta {
    font-size: 0.85rem;
    color: var(--gray);
}

.content-panel-copy {
    margin: 0.5rem 0;
    line-height: 1.5;
}

.content-panel-copy-lg {
    font-size: 1.1rem;
}

.content-panel-footer {
    font-size: 0.85rem;
    margin: 0.5rem 0 0 0;
}

.content-panel-footer-md {
    font-size: 0.9rem;
}

.quiz-question-copy {
    font-size: 1.2rem;
    margin: 1.5rem 0;
}

.quiz-options {
    margin: 1rem 0;
}

.quiz-option {
    display: block;
    padding: 1rem;
    background: #f3f4f6;
    border-radius: 8px;
    cursor: pointer;
    margin-bottom: 0.8rem;
}

.quiz-option-input {
    margin-right: 0.5rem;
}

/* Cards */
.card {
    background: var(--white);
    border-radius: 8px;
    padding: 1.5rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    margin-bottom: 1.5rem;
}

.card .card-content {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.card-content h3 {
    margin-top: 0;
    margin-bottom: 0.6rem;
}

.card-content .badge {
    display: inline-block;
    align-self: flex-start;
    margin-bottom: 0.8rem;
}

.card-content .challenge-description {
    flex-grow: 1;
    margin: 0 0 1rem 0;
    min-height: 2.5rem;
}

.card-content .challenge-info {
    margin-top: auto;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
}

.card-content .reward-description {
    flex-grow: 1;
    margin: 0.8rem 0 1rem 0;
    min-height: 2.5rem;
}

.reward-image-wrap {
    margin-bottom: 1rem;
}

.reward-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 12px;
    display: block;
    background: var(--light);
}

.reward-image-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray);
    font-size: 2rem;
    border: 1px dashed var(--border);
}

.reward-upload-preview-wrap {
    display: flex;
    justify-content: center;
    margin-top: 1rem;
}

.reward-upload-preview {
    width: 260px;
    height: 260px;
    max-width: 100%;
    object-fit: cover;
    border-radius: 18px;
    border: 1px solid var(--border);
    box-shadow: 0 10px 24px rgba(15, 23, 42, 0.12);
    background: #f8fafc;
}

.reward-upload-note {
    display: block;
    text-align: center;
    margin-top: 0.85rem;
}

.admin-modal-content .reward-upload-preview {
    width: 220px;
    height: 220px;
}

.card-content .reward-info {
    margin-top: auto;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
}

.card-content .reward-info p {
    margin: 0.3rem 0;
    font-size: 0.95rem;
}

.card-grid.verify-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1rem;
}

.verify-card .card-content {
    gap: 0.5rem;
}

.verify-meta p {
    margin: 0.3rem 0;
}

.verify-proof-wrap {
    margin-top: 0.6rem;
}

.verify-proof-label {
    margin: 0 0 0.45rem 0;
    font-weight: 600;
}

.verify-proof-image {
    width: 100%;
    height: 160px;
    object-fit: cover;
    border-radius: 8px;
    border: 1px solid var(--border);
    display: block;
}

.verify-no-image {
    margin-top: 0.6rem;
}

.verify-form {
    margin-top: 0.5rem;
}

.verify-actions {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.5rem;
}

.card-header {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--dark);
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.card-grid-four {
    grid-template-columns: repeat(4, 1fr);
}

.card-grid .card {
    display: flex;
    flex-direction: column;
    height: 100%;
}

/* Stats Cards */
.stat-card {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    padding: 1.2rem;
    border-radius: 8px;
    text-align: center;
    border: none;
    box-shadow: 0 2px 8px rgba(0,0,0,0.12);
    transition: all 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}

.stat-card.blue {
    background: linear-gradient(135deg, #3b82f6, #2563eb);
}

.stat-card.orange {
    background: linear-gradient(135deg, #f59e0b, #d97706);
}

.stat-card.purple {
    background: linear-gradient(135deg, #8b5cf6, #7c3aed);
}

.stat-card .stat-value {
    font-size: 2.4rem;
    font-weight: 800;
    margin: 0.6rem 0 0.3rem 0;
    color: white;
    line-height: 1;
}

.stat-card .stat-label {
    font-size: 0.8rem;
    color: rgba(255,255,255,0.9);
    line-height: 1.4;
    margin: 0.2rem 0;
    font-weight: 500;
}

.stat-card .stat-label i {
    font-size: 1.3rem;
    margin-right: 0.45rem;
    vertical-align: -0.08em;
}

/* Forms */
.form-group {
    margin-bottom: 1.2rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--dark);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.7rem;
    border: 2px solid var(--border);
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
}

.form-select {
    cursor: pointer;
    appearance: auto;
    background-color: white;
    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='%23333' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 12px;
    padding-right: 2.5rem;
}

.form-select option {
    padding: 0.5rem;
}

/* Tables */
.table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    border-radius: 8px;
    overflow: hidden;
}

.table th {
    background: var(--primary);
    color: white;
    padding: 1rem;
    text-align: left;
    font-weight: 600;
}

.table td {
    padding: 1rem;
    border-bottom: 1px solid var(--border);
}

.table tr:hover {
    background: var(--light);
}

.table-responsive {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.pagination-wrap {
    margin-top: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.pagination-summary {
    margin: 0;
    color: var(--gray);
    font-size: 0.92rem;
}

.pagination {
    display: flex;
    align-items: center;
    gap: 0.7rem;
}

.pagination-page {
    font-weight: 600;
    color: var(--dark);
}

.points-history-table-wrap {
    margin-top: 0.25rem;
}

.points-history-table {
    min-width: 760px;
}

/* Admin Utilities */
.admin-form-grid {
    display: grid;
    gap: 1rem;
}

.admin-form-grid-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.admin-form-grid-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.admin-users-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    gap: 0.8rem;
}

.admin-users-title {
    margin: 0;
}

.admin-users-filters {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    flex-wrap: wrap;
    justify-content: flex-end;
    width: min(100%, 620px);
}

.admin-users-filters select {
    min-width: 130px;
    flex: 0 1 150px;
}

.admin-users-filters input {
    min-width: 170px;
    flex: 1 1 200px;
}

.admin-users-filters input,
.admin-users-filters select,
.admin-users-filters .btn {
    min-height: 38px;
    padding: 0.5rem 0.7rem;
    font-size: 0.9rem;
}

.admin-users-filters .btn {
    padding-left: 0.8rem;
    padding-right: 0.8rem;
}

.users-table {
    min-width: 960px;
}

.departments-create-form-action {
    display: flex;
    align-items: flex-end;
}

.departments-create-form-action .btn {
    width: 100%;
}

.table-responsive .departments-table {
    min-width: 680px;
}

.departments-delete-form {
    display: inline-flex;
}

.departments-page-title {
    line-height: 1.2;
}

.rewards-page-title {
    line-height: 1.2;
}

.reports-page-title {
    line-height: 1.2;
}

.admin-reports-secondary-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: start;
}

.admin-reports-secondary-cards > .card {
    min-width: 0;
}

.staff-dashboard-secondary-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: start;
}

.staff-dashboard-secondary-cards > .card {
    min-width: 0;
}

.admin-modal-overlay {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 9999;
    padding: 2rem;
}

.admin-modal-content {
    background: white;
    max-width: 500px;
    margin: 50px auto;
    padding: 2rem;
    border-radius: 10px;
    max-height: 80vh;
    overflow-y: auto;
    position: relative;
}

.admin-modal-delete-form {
    position: absolute;
    top: 2rem;
    right: 2rem;
}

.admin-modal-content-sm {
    max-width: 400px;
    margin: 100px auto;
}

.admin-inline-form {
    display: inline;
}

.rewards-table-pending {
    min-width: 760px;
}

.rewards-table-main {
    min-width: 900px;
}

.reward-actions {
    display: flex;
    gap: 0.4rem;
    flex-wrap: wrap;
}

.reward-actions > .btn,
.reward-actions > .admin-inline-form > .btn,
.user-actions > .btn,
.user-actions > .admin-inline-form > .btn,
.action-delete-btn {
    padding: 0.4rem 0.8rem;
    line-height: 1;
}

.action-delete-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 5.25rem;
}

.action-delete-btn i {
    pointer-events: none;
}

.user-actions {
    display: flex;
    gap: 0.4rem;
    flex-wrap: wrap;
    align-items: center;
}

.user-actions .admin-inline-form {
    display: inline-flex;
}

.staff-top-performers-table {
    min-width: 560px;
}

.staff-department-stat .stat-value {
    overflow-wrap: anywhere;
}

.report-source-item {
    margin: 1rem 0;
}

.report-source-row {
    display: flex;
    justify-content: space-between;
    gap: 0.6rem;
    margin-bottom: 0.3rem;
}

.report-source-name,
.report-source-value {
    min-width: 0;
}

.report-source-value {
    text-align: right;
    white-space: nowrap;
}

.reports-table-department {
    min-width: 600px;
}

.reports-table-monthly {
    min-width: 520px;
}

.electricity-page-title {
    line-height: 1.2;
}

.electricity-layout {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: start;
}

.electricity-layout > .card {
    min-width: 0;
}

.electricity-benchmark-alert {
    line-height: 1.5;
}

.table-responsive .electricity-history-table {
    min-width: 520px;
}

/* Alerts */
.alert {
    padding: 1rem 1.5rem;
    border-radius: 6px;
    margin-bottom: 1.5rem;
    font-weight: 500;
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
    border-left: 4px solid var(--success);
}

.alert-danger {
    background: #fee2e2;
    color: #991b1b;
    border-left: 4px solid var(--danger);
}

.alert-warning {
    background: #fef3c7;
    color: #92400e;
    border-left: 4px solid var(--warning);
}

.alert-info {
    background: #dbeafe;
    color: #1e40af;
    border-left: 4px solid var(--secondary);
}

.challenge-alert {
    border: 1px solid;
    border-left-width: 6px;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.06);
    padding: 0.85rem 1rem 0.9rem;
    margin-bottom: 1rem;
}

.challenge-alert-danger {
    background: #fff5f5;
    border-color: #fecaca;
    border-left-color: #dc2626;
    color: #7f1d1d;
}

.challenge-alert-success {
    background: #f0fdf4;
    border-color: #bbf7d0;
    border-left-color: #16a34a;
    color: #14532d;
}

.challenge-alert-title {
    margin: 0 0 0.2rem 0;
    font-weight: 700;
    font-size: 0.95rem;
    line-height: 1.25;
}

.challenge-alert-message {
    margin: 0;
    font-size: 0.92rem;
    line-height: 1.45;
}

.challenge-alert-danger .challenge-alert-title::before {
    content: "! ";
}

.challenge-alert-success .challenge-alert-title::before {
    content: "✓ ";
}

/* Auth Pages */
.auth-page {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.auth-container {
    width: 100%;
    max-width: 450px;
}

.auth-card {
    background: white;
    border-radius: 12px;
    padding: 2.5rem;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
}

.auth-header {
    text-align: center;
    margin-bottom: 2rem;
}

.auth-header h1 {
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.auth-header p {
    color: var(--gray);
}

.auth-footer {
    text-align: center;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
}

.auth-footer a {
    color: var(--primary);
    font-weight: 600;
}

.demo-credentials {
    margin-top: 2rem;
    padding: 1rem;
    background: var(--light);
    border-radius: 6px;
    font-size: 0.85rem;
}

.demo-credentials h3 {
    font-size: 1rem;
    margin-bottom: 0.5rem;
}

.demo-credentials p {
    margin: 0.3rem 0;
}

/* Badge/Achievement Styles */
.badge {
    display: inline-block;
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 0.8rem;
}

.card-content .badge {
    display: block;
    margin-bottom: 0.8rem;
}

.badge-success {
    background: #d1fae5;
    color: #065f46;
}

.badge-warning {
    background: #fef3c7;
    color: #92400e;
}

.badge-danger {
    background: #fee2e2;
    color: #991b1b;
}

.badge-info {
    background: #dbeafe;
    color: #1e40af;
}

/* Leaderboard */
.leaderboard-item {
    display: flex;
    align-items: center;
    padding: 1rem;
    background: white;
    border-radius: 8px;
    margin-bottom: 0.8rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.leaderboard-rank {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary);
    margin-right: 1.5rem;
    min-width: 50px;
}

.leaderboard-rank.top1 { color: #fbbf24; }
.leaderboard-rank.top2 { color: #9ca3af; }
.leaderboard-rank.top3 { color: #f97316; }

.leaderboard-info {
    flex: 1;
}

.leaderboard-name {
    font-weight: 600;
    font-size: 1.1rem;
}

.leaderboard-department {
    color: var(--gray);
    font-size: 0.9rem;
}

.leaderboard-points {
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--primary);
}

.leaderboard-header-card {
    border: 1px solid #dbeafe;
    background: linear-gradient(180deg, #f8fbff 0%, #ffffff 100%);
}

.leaderboard-role-switch {
    display: inline-grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.35rem;
    background: #e5eefb;
    border-radius: 999px;
    padding: 0.28rem;
}

.leaderboard-switch-option {
    text-decoration: none;
    text-align: center;
    padding: 0.45rem 1rem;
    border-radius: 999px;
    font-weight: 700;
    color: #1e3a5f;
    transition: all 0.2s ease;
}

.leaderboard-switch-option:hover {
    background: rgba(255,255,255,0.7);
}

.leaderboard-switch-option.is-active {
    background: white;
    color: var(--primary-dark);
    box-shadow: 0 1px 4px rgba(0,0,0,0.12);
}

.leaderboard-user-rank {
    margin-top: 0.8rem;
    margin-bottom: 0;
}

.leaderboard-item.is-current-user {
    border: 2px solid var(--primary);
    background: #f0fdf4;
}

/* Tree Pet */
.tree-container {
    text-align: center;
    padding: 2rem;
}

.tree-visual {
    font-size: 150px;
    margin: 2rem 0;
}

.tree-stage {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 1rem;
}

.tree-actions {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

/* Progress Bar */
.progress-bar {
    width: 100%;
    height: 30px;
    background: var(--light);
    border-radius: 15px;
    overflow: hidden;
    margin: 1rem 0;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--success));
    transition: width 0.5s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
}

.profile-actions {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.profile-page {
    max-width: 760px;
    margin: 0 auto;
}

.profile-top-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.profile-top-main {
    display: flex;
    align-items: center;
    gap: 0.9rem;
    min-width: 0;
}

.profile-avatar {
    width: 96px;
    height: 96px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    font-weight: 700;
    color: white;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    flex-shrink: 0;
}

.profile-avatar-container {
    position: relative;
    width: 96px;
    height: 96px;
    border-radius: 50%;
    overflow: hidden;
    flex-shrink: 0;
}

.profile-avatar-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
}

.profile-picture-preview-wrap {
    display: flex;
    justify-content: center;
    margin-top: 1rem;
}

.profile-picture-preview {
    width: 260px;
    height: 260px;
    max-width: 100%;
    object-fit: cover;
    border-radius: 20px;
    border: 1px solid var(--border);
    box-shadow: 0 10px 24px rgba(15, 23, 42, 0.12);
    background: #f8fafc;
}

.profile-picture-note {
    display: block;
    text-align: center;
    margin-top: 0.85rem;
}

.profile-student-id {
    color: var(--gray);
    font-size: 0.9rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-top: 0.2rem;
}

.profile-top-text {
    min-width: 0;
}

.profile-title {
    font-size: 1.35rem;
    line-height: 1.2;
    margin-bottom: 0.2rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.profile-subtitle {
    color: var(--gray);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.role-pill {
    padding: 0.35rem 0.7rem;
    border-radius: 999px;
    background: #ecfeff;
    color: #0f766e;
    border: 1px solid #a5f3fc;
    font-size: 0.82rem;
    font-weight: 600;
    flex-shrink: 0;
}

.profile-stats {
    display: grid;
    gap: 0.75rem;
}

.profile-info-list p {
    margin: 0;
    padding: 0.6rem 0;
    border-bottom: 1px solid var(--border);
}

.profile-info-list p:last-child {
    border-bottom: 0;
    padding-bottom: 0;
}

.account-info {
    background: #f9fafb;
    padding: 1.25rem;
    border-radius: 6px;
    border-left: 4px solid var(--primary);
}

.info-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 0;
}

.info-label {
    font-weight: 600;
    color: var(--dark);
}

.info-value {
    color: var(--gray);
    font-style: italic;
}

.profile-actions-mobile .btn {
    flex: 1 1 220px;
}

/* Footer */
.footer {
    background: var(--dark);
    color: white;
    padding: 2rem 0;
    text-align: center;
    margin-top: 3rem;
}

.footer p {
    margin: 0.5rem 0;
}

/* Responsive */
@media (max-width: 768px) {
    .main-content h1 {
        font-size: 1.3rem;
        line-height: 1.25;
    }

    .main-content .card-header {
        font-size: 1.05rem;
        margin-bottom: 0.75rem;
    }

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

    .nav-panel {
        display: none;
        position: absolute;
        top: calc(100% + 8px);
        left: 0;
        right: 0;
        padding: 0.9rem;
        border-radius: 12px;
        background: var(--white);
        border: 1px solid var(--border);
        box-shadow: 0 12px 30px rgba(0,0,0,0.12);
        margin: 0 1rem;
        z-index: 1001;
        flex-direction: column;
        align-items: stretch;
        gap: 0.9rem;
    }

    .navbar.menu-open .nav-panel {
        display: flex;
    }

    .nav-links {
        width: 100%;
        display: flex;
        flex-direction: column;
        gap: 0.2rem;
    }

    .nav-links li a {
        display: block;
        width: 100%;
        padding: 0.55rem 0.3rem;
    }

    .nav-more-item {
        width: 100%;
    }

    .nav-dropdown {
        width: 100%;
    }

    .nav-dropdown summary {
        width: 100%;
        padding: 0.55rem 0.3rem;
    }

    .nav-dropdown-menu {
        position: static;
        min-width: 100%;
        margin-top: 0.35rem;
        border-radius: 8px;
        box-shadow: none;
    }

    .nav-user-area {
        width: 100%;
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
        gap: 0.75rem;
        flex-wrap: wrap;
    }

    .profile-summary {
        display: inline-flex;
        width: auto;
        order: 1;
    }

    .profile-action {
        margin-left: auto;
        order: 2;
    }

    .profile-icon-link {
        display: none;
    }

    .btn-logout {
        width: 100%;
        text-align: center;
    }
    
    .profile-summary .user-name {
        max-width: 120px;
    }
    
    .card-grid {
        grid-template-columns: 1fr;
    }

    .card-grid-four {
        grid-template-columns: 1fr;
    }

    .card-grid.verify-grid {
        grid-template-columns: 1fr;
    }

    .verify-actions {
        grid-template-columns: 1fr;
    }
    
    .leaderboard-rank {
        font-size: 1.2rem;
        min-width: 40px;
    }

    .leaderboard-role-switch {
        width: 100%;
        display: grid;
    }

    .leaderboard-switch-option {
        width: 100%;
        font-size: 0.9rem;
        padding: 0.45rem 0.6rem;
    }

    .profile-top-card {
        flex-direction: column;
        align-items: flex-start;
    }

    .profile-top-main {
        width: 100%;
    }

    .profile-title {
        font-size: 1.2rem;
    }

    .profile-subtitle {
        white-space: normal;
        overflow: visible;
        text-overflow: clip;
    }

    .role-pill {
        align-self: flex-start;
    }

    .profile-actions-mobile {
        flex-direction: column;
    }

    .profile-actions-mobile .btn {
        width: 100%;
        flex: initial;
    }

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

    .responsive-row-value {
        text-align: left;
        width: 100%;
    }

    .responsive-actions-grid {
        grid-template-columns: 1fr;
    }

    .content-panel-top {
        flex-direction: column;
    }

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

    .admin-users-toolbar {
        flex-direction: column;
        align-items: stretch;
    }

    .admin-users-title {
        width: 100%;
    }

    .admin-users-filters {
        width: 100%;
        display: grid;
        grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
        align-items: stretch;
        gap: 0.4rem;
    }

    .admin-users-filters input,
    .admin-users-filters select,
    .admin-users-filters .btn,
    .card .btn[name="create_user"] {
        width: 100%;
        min-height: 32px;
        padding: 0.4rem 0.6rem;
        font-size: 0.84rem;
    }

    .admin-users-filters input,
    .admin-users-filters select {
        line-height: 1.2;
    }

    .admin-users-filters .btn {
        grid-column: 1 / -1;
    }

    .admin-users-toolbar {
        gap: 0.6rem;
    }

    .admin-users-title {
        font-size: 1.05rem;
    }

    .admin-form-grid {
        gap: 0.75rem;
    }

    .admin-form-grid .form-group input,
    .admin-form-grid .form-group select {
        min-height: 32px;
        padding: 0.4rem 0.6rem;
        font-size: 0.84rem;
    }

    .departments-page-title {
        font-size: 1.3rem;
    }

    .rewards-page-title {
        font-size: 1.3rem;
    }

    .reports-page-title {
        font-size: 1.3rem;
    }

    .electricity-page-title {
        font-size: 1.3rem;
    }

    .table-responsive .table {
        min-width: 680px;
    }

    .admin-dashboard-secondary-cards {
        grid-template-columns: 1fr;
    }

    .admin-reports-secondary-cards {
        grid-template-columns: 1fr;
    }

    .electricity-layout {
        grid-template-columns: 1fr;
    }

    .table-responsive .admin-top-performers-table {
        min-width: 520px !important;
    }

    .table-responsive .electricity-history-table {
        min-width: 480px;
    }

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

    .pagination {
        width: 100%;
        justify-content: space-between;
    }
}

@media (max-width: 1024px) and (min-width: 769px) {
    .staff-dashboard-secondary-cards {
        grid-template-columns: 1fr;
    }

    .electricity-layout {
        grid-template-columns: 1fr;
    }

    .admin-reports-secondary-cards {
        grid-template-columns: 1fr;
    }

    .admin-dashboard-secondary-cards {
        grid-template-columns: 1fr;
    }

    .reward-actions {
        flex-direction: column;
        align-items: stretch;
        gap: 0.5rem;
    }

    .reward-actions .btn {
        width: 100%;
        padding: 0.5rem 1rem;
        min-height: 40px;
        font-size: 0.95rem;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .user-actions {
        display: flex !important;
        flex-direction: column;
        align-items: stretch;
        gap: 0.5rem;
    }

    .user-actions .btn,
    .user-actions .admin-inline-form,
    .user-actions .admin-inline-form .btn {
        width: 100%;
        padding: 0.5rem 1rem;
        min-height: 40px;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .action-delete-btn {
        min-width: 0;
        width: 100%;
        min-height: 40px;
        padding: 0.5rem 1rem;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .eco-tips-actions .btn {
        min-height: 40px;
        padding: 0.5rem 1rem;
    }

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

    .admin-users-toolbar {
        flex-direction: column;
        align-items: stretch;
    }

    .admin-users-filters {
        flex-direction: column;
        align-items: stretch;
    }

    .admin-users-filters input,
    .admin-users-filters select,
    .admin-users-filters .btn {
        width: 100%;
    }

    .admin-modal-overlay {
        padding: 1rem;
    }

    .admin-modal-content {
        margin: 1.5rem auto;
        max-width: 100%;
        width: 100%;
        padding: 1.25rem;
        max-height: calc(100vh - 3rem);
    }

    .admin-modal-delete-form {
        top: 1.25rem;
        right: 1.25rem;
    }

    .reward-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .reward-actions .btn {
        width: 100%;
    }

    .user-actions {
        display: grid !important;
        grid-template-columns: 1fr;
        row-gap: 0.9rem !important;
        align-items: stretch;
    }

    .user-actions .btn,
    .user-actions .admin-inline-form,
    .user-actions .admin-inline-form .btn {
        width: 100%;
    }

    .action-delete-btn {
        min-width: 0;
    }

    .user-actions .btn,
    .user-actions .admin-inline-form .btn {
        min-height: 36px;
    }

    .user-actions .admin-inline-form {
        margin-top: 1rem !important;
    }

    .user-actions > .admin-inline-form {
        margin-top: 1rem !important;
    }

    .user-actions > .admin-inline-form .btn {
        margin-top: 0 !important;
    }
    .eco-tips-actions {
        flex-direction: column;
        gap: 0.6rem;
    }

    .eco-tips-actions .btn {
        width: 100%;
        min-height: 40px;
        padding: 0.5rem 1rem;
        display: flex;
        align-items: center;
        justify-content: center;
    }
}

@media (max-width: 500px) {
    .reward-actions {
        flex-direction: column;
        align-items: stretch;
        gap: 0.5rem;
    }

    .reward-actions .btn {
        width: 100%;
        padding: 0.4rem 0.8rem;
        min-height: 36px;
        font-size: 0.9rem;
    }

    .user-actions {
        display: flex !important;
        flex-direction: column;
        align-items: stretch;
        gap: 0.5rem;
    }

    .user-actions .btn,
    .user-actions .admin-inline-form,
    .user-actions .admin-inline-form .btn {
        width: 100%;
        padding: 0.4rem 0.8rem;
        min-height: 36px;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .action-delete-btn {
        min-width: 0;
        width: 100%;
        min-height: 36px;
        padding: 0.4rem 0.8rem;
    }

    .eco-tips-actions {
        flex-direction: column;
        gap: 0.5rem;
    }

    .eco-tips-actions .btn {
        width: 100%;
        min-height: 36px;
        padding: 0.4rem 0.8rem;
    }

    /* Merged Responsive rules */
    .tree-actions .btn {
        width: 100%;
    }

    .report-source-row {
        flex-direction: column;
        align-items: flex-start;
    }

    .report-source-name,
    .report-source-value {
        width: 100%;
    }

    .report-source-value {
        text-align: left;
        white-space: normal;
        overflow-wrap: anywhere;
    }

    .reports-table-department {
        min-width: 0;
    }

    .reports-table-department thead {
        display: none;
    }

    .reports-table-department,
    .reports-table-department tbody,
    .reports-table-department tr,
    .reports-table-department td {
        display: block;
        width: 100%;
    }

    .reports-table-department tr {
        border: 1px solid var(--border);
        border-radius: 10px;
        margin-bottom: 0.8rem;
        padding: 0.4rem 0.7rem;
        background: var(--white);
    }

    .reports-table-department td {
        border-bottom: 1px dashed var(--border);
        padding: 0.55rem 0;
    }

    .reports-table-department td:last-child {
        border-bottom: 0;
    }

    .reports-table-department td::before {
        content: attr(data-label);
        display: block;
        font-size: 0.78rem;
        color: var(--gray);
        margin-bottom: 0.15rem;
        font-weight: 600;
        text-transform: uppercase;
        letter-spacing: 0.02em;
    }

    .staff-dashboard-secondary-cards {
        grid-template-columns: 1fr;
    }

    .table-responsive .staff-top-performers-table {
        min-width: 520px;
    }

    .staff-top-performers-card,
    .staff-department-stats-card {
        width: 100%;
    }

    .staff-department-stats-card .stat-card {
        padding: 0.95rem;
    }

    .staff-department-stat .stat-value {
        font-size: 1.7rem;
        line-height: 1.15;
    }
}

/* Tablet/Landscape (768px - 1024px) */
@media (max-width: 1024px) and (min-width: 769px) {
    .card-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .card-grid-four {
        grid-template-columns: repeat(2, 1fr);
    }

    .card-grid.verify-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 420px) {
    .main-content {
        padding: 1.25rem 0;
    }

    .container {
        padding: 0 14px;
    }

    .stat-card {
        padding: 0.9rem;
    }

    .stat-card .stat-value {
        font-size: 1.9rem;
        margin: 0.45rem 0 0.2rem 0;
    }

    .stat-card .stat-label {
        font-size: 0.75rem;
        line-height: 1.3;
    }

    .stat-card .stat-label i {
        font-size: 1.1rem;
        margin-right: 0.3rem;
    }

    .reward-actions {
        flex-direction: column;
        align-items: stretch;
        gap: 0.5rem;
    }

    .reward-actions .btn {
        width: 100%;
        padding: 0.45rem 0.75rem;
        min-height: 32px;
        font-size: 0.85rem;
    }

    .user-actions {
        display: flex !important;
        flex-direction: column;
        align-items: stretch;
        gap: 0.5rem;
    }

    .user-actions .btn,
    .user-actions .admin-inline-form,
    .user-actions .admin-inline-form .btn {
        width: 100%;
        padding: 0.45rem 0.75rem;
        min-height: 32px;
        font-size: 0.85rem;
    }

    .action-delete-btn {
        min-width: 0;
        width: 100%;
        min-height: 32px;
        padding: 0.45rem 0.75rem;
    }

    .eco-tips-actions {
        gap: 0.5rem;
    }

    .eco-tips-actions .btn {
        min-height: 32px;
        padding: 0.45rem 0.75rem;
        font-size: 0.85rem;
    }
    }
}

/* Eco Tips Community */
.eco-tips-actions {
    display: flex;
    gap: 0.5rem;
    flex-direction: column;
    align-items: stretch;
}

.eco-tips-actions form {
    display: flex;
}

.eco-tips-actions .btn {
    padding: 0.4rem 0.8rem;
    line-height: 1;
    flex: 1;
}

.eco-tips-actions .btn-sm {
    padding: 0.4rem 0.8rem;
}

@media (min-width: 769px) {
    .eco-tips-actions {
        flex-direction: column;
        min-width: 80px;
    }
}

/* Action Column Controls (All Roles) */
.reward-actions,
.user-actions,
.challenge-actions,
.eco-tips-actions {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    flex-wrap: nowrap;
}

.reward-actions > .admin-inline-form,
.user-actions > .admin-inline-form,
.challenge-actions > .admin-inline-form,
.eco-tips-actions > form {
    display: inline-flex;
}

.reward-actions > .btn,
.reward-actions > .admin-inline-form > .btn,
.user-actions > .btn,
.user-actions > .admin-inline-form > .btn,
.challenge-actions > .btn,
.challenge-actions > .admin-inline-form > .btn,
.eco-tips-actions > .btn,
.eco-tips-actions > form > .btn,
.reward-actions .action-delete-btn,
.user-actions .action-delete-btn,
.challenge-actions .action-delete-btn,
.eco-tips-actions .action-delete-btn {
    min-height: 32px;
    padding: 0.35rem 0.65rem;
    line-height: 1;
    font-size: 0.84rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: auto;
}

.reward-actions .action-delete-btn,
.user-actions .action-delete-btn,
.challenge-actions .action-delete-btn,
.eco-tips-actions .action-delete-btn {
    min-width: 0;
}

@media (max-width: 768px) {
    .reward-actions,
    .user-actions,
    .challenge-actions,
    .eco-tips-actions {
        flex-direction: column !important;
        align-items: stretch !important;
        gap: 0.4rem !important;
    }

    .reward-actions > .admin-inline-form,
    .user-actions > .admin-inline-form,
    .challenge-actions > .admin-inline-form,
    .eco-tips-actions > form {
        display: block;
    }

    .reward-actions > .btn,
    .reward-actions > .admin-inline-form,
    .reward-actions > .admin-inline-form > .btn,
    .user-actions > .btn,
    .user-actions > .admin-inline-form,
    .user-actions > .admin-inline-form > .btn,
    .challenge-actions > .btn,
    .challenge-actions > .admin-inline-form,
    .challenge-actions > .admin-inline-form > .btn,
    .eco-tips-actions > .btn,
    .eco-tips-actions > form,
    .eco-tips-actions > form > .btn,
    .reward-actions .action-delete-btn,
    .user-actions .action-delete-btn,
    .challenge-actions .action-delete-btn,
    .eco-tips-actions .action-delete-btn {
        width: 100% !important;
    }
}

@media (min-width: 769px) {
    .reward-actions,
    .user-actions,
    .challenge-actions,
    .eco-tips-actions {
        flex-direction: row !important;
        align-items: center !important;
        gap: 0.4rem !important;
    }

    .reward-actions > .admin-inline-form,
    .user-actions > .admin-inline-form,
    .challenge-actions > .admin-inline-form,
    .eco-tips-actions > form {
        display: inline-flex;
    }

    .reward-actions > .btn,
    .reward-actions > .admin-inline-form,
    .reward-actions > .admin-inline-form > .btn,
    .user-actions > .btn,
    .user-actions > .admin-inline-form,
    .user-actions > .admin-inline-form > .btn,
    .challenge-actions > .btn,
    .challenge-actions > .admin-inline-form,
    .challenge-actions > .admin-inline-form > .btn,
    .eco-tips-actions > .btn,
    .eco-tips-actions > form,
    .eco-tips-actions > form > .btn,
    .reward-actions .action-delete-btn,
    .user-actions .action-delete-btn,
    .challenge-actions .action-delete-btn,
    .eco-tips-actions .action-delete-btn {
        width: auto !important;
    }
}

/* Utility Classes */
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--gray); }
.fw-bold { font-weight: bold; }