/* ==========================================================================
   Clinical Trial Management & Protocol Submission Portal - Enterprise UI Theme
   ========================================================================== */

:root {
    --portal-primary: #0f2744;
    --portal-primary-hover: #0a1b30;
    --portal-secondary: #0284c7;
    --portal-secondary-hover: #0369a1;
    --portal-bg: #f4f6f9;
    --portal-card-bg: #ffffff;
    --portal-border: #e2e8f0;
    --portal-text-main: #1e293b;
    --portal-text-muted: #64748b;
    --portal-sidebar-bg: #0f172a;
    --portal-sidebar-text: #94a3b8;
    --portal-sidebar-hover: #1e293b;
    --portal-sidebar-active: #0284c7;
    
    --status-draft: #64748b;
    --status-submitted: #0284c7;
    --status-review: #7c3aed;
    --status-changes: #d97706;
    --status-approved: #059669;
    --status-active: #0d9488;
    --status-completed: #1e293b;
    --status-rejected: #dc2626;

    --font-family-base: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: var(--font-family-base);
    background-color: var(--portal-bg);
    color: var(--portal-text-main);
    font-size: 14px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

/* ---------------- Layout Wrapper ---------------- */
html, body { height: 100%; margin: 0; padding: 0; overflow: hidden; }

.portal-layout {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

.portal-sidebar {
    width: 260px;
    background-color: var(--portal-sidebar-bg);
    color: #cbd5e1;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    transition: width 0.22s cubic-bezier(0.4, 0, 0.2, 1);
    border-right: 1px solid #1e293b;
    height: 100vh;
    overflow: hidden;
    position: relative;
}

/* ── Minimize toggle button ── */
.sidebar-toggle-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.65rem 0;
    color: #64748b;
    cursor: pointer;
    background: none;
    border: none;
    border-top: 1px solid #1e293b;
    width: 100%;
    font-size: 0.85rem;
    gap: 0.5rem;
    transition: color 0.15s;
    flex-shrink: 0;
}
.sidebar-toggle-btn:hover { color: #94a3b8; }
.sidebar-toggle-btn .toggle-label { font-size: 0.75rem; font-weight: 600; letter-spacing: 0.04em; }

/* ── Collapsed state ── */
.portal-sidebar.sidebar--collapsed {
    width: 64px;
}
.portal-sidebar.sidebar--collapsed .portal-sidebar-brand span.brand-text,
.portal-sidebar.sidebar--collapsed .portal-menu-header,
.portal-sidebar.sidebar--collapsed .portal-menu-item span.menu-text,
.portal-sidebar.sidebar--collapsed .sidebar-toggle-btn .toggle-label {
    display: none;
    opacity: 0;
}
.portal-sidebar.sidebar--collapsed .portal-menu-item {
    justify-content: center;
    padding: 0.75rem;
}
.portal-sidebar.sidebar--collapsed .portal-sidebar-brand {
    justify-content: center;
    padding: 1.25rem 0.5rem;
}
.portal-sidebar.sidebar--collapsed .sidebar-toggle-btn {
    justify-content: center;
}

.portal-sidebar-brand {
    padding: 1.25rem 1.5rem;
    font-size: 1.1rem;
    font-weight: 700;
    color: #ffffff;
    border-bottom: 1px solid #1e293b;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    letter-spacing: -0.02em;
}

.portal-sidebar-brand span.logo-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: #0284c7;
    color: #ffffff;
    border-radius: 6px;
    font-weight: bold;
    font-size: 1rem;
}

.portal-sidebar-menu {
    padding: 1rem 0;
    overflow-y: auto;
    overflow-x: hidden;
    flex-grow: 1;
    /* Scrollbar styling */
    scrollbar-width: thin;
    scrollbar-color: #2d3748 transparent;
}
.portal-sidebar-menu::-webkit-scrollbar { width: 4px; }
.portal-sidebar-menu::-webkit-scrollbar-track { background: transparent; }
.portal-sidebar-menu::-webkit-scrollbar-thumb { background: #2d3748; border-radius: 4px; }

.portal-menu-header {
    padding: 0.5rem 1.5rem 0.25rem;
    font-size: 0.7rem;
    text-transform: uppercase;
    font-weight: 700;
    letter-spacing: 0.08em;
    color: #64748b;
}

.portal-menu-item {
    display: flex;
    align-items: center;
    padding: 0.65rem 1.5rem;
    color: #94a3b8;
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    gap: 0.75rem;
    transition: all 0.15s ease;
    border-left: 3px solid transparent;
}

.portal-menu-item:hover {
    color: #f8fafc;
    background-color: var(--portal-sidebar-hover);
    border-left-color: #38bdf8;
}

.portal-menu-item.active {
    color: #ffffff;
    background-color: #1e293b;
    border-left-color: var(--portal-secondary);
    font-weight: 600;
}

.portal-main {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
    height: 100vh;
    overflow: hidden;
}

/* ---------------- Top Header ---------------- */
.portal-header {
    background-color: #ffffff;
    border-bottom: 1px solid var(--portal-border);
    padding: 0.75rem 1.75rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.03);
}

.portal-header-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.portal-header-right {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.portal-user-badge {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
}

.portal-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: #e2e8f0;
    color: #0f172a;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.875rem;
}

.portal-content {
    padding: 1.75rem;
    flex-grow: 1;
    overflow-y: auto;
    overflow-x: hidden;
    height: 0; /* flex child trick — forces content to scroll inside, not the page */
    /* Scrollbar styling */
    scrollbar-width: thin;
    scrollbar-color: #cbd5e1 transparent;
}
.portal-content::-webkit-scrollbar { width: 6px; }
.portal-content::-webkit-scrollbar-track { background: transparent; }
.portal-content::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 4px; }

/* ---------------- Breadcrumb ---------------- */
.portal-breadcrumb {
    display: flex;
    align-items: center;
    font-size: 0.8rem;
    color: var(--portal-text-muted);
    margin-bottom: 0.5rem;
    gap: 0.5rem;
}

.portal-breadcrumb a {
    color: var(--portal-secondary);
    text-decoration: none;
}

.portal-breadcrumb a:hover {
    text-decoration: underline;
}

.portal-page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.portal-page-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: #0f172a;
    margin: 0;
    letter-spacing: -0.02em;
}

.portal-page-subtitle {
    font-size: 0.875rem;
    color: var(--portal-text-muted);
    margin-top: 0.25rem;
}

/* ---------------- Cards & Panels ---------------- */
.portal-card {
    background-color: var(--portal-card-bg);
    border: 1px solid var(--portal-border);
    border-radius: 6px;
    margin-bottom: 1.5rem;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.04);
}

.portal-card-header {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--portal-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color: #ffffff;
    border-top-left-radius: 6px;
    border-top-right-radius: 6px;
}

.portal-card-title {
    font-size: 1rem;
    font-weight: 600;
    color: #0f172a;
    margin: 0;
}

.portal-card-body {
    padding: 1.25rem;
}

.portal-card-footer {
    padding: 0.875rem 1.25rem;
    border-top: 1px solid var(--portal-border);
    background-color: #f8fafc;
    border-bottom-left-radius: 6px;
    border-bottom-right-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 0.75rem;
}

/* ---------------- Metric Strip ---------------- */
.metric-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.metric-box {
    background: #ffffff;
    border: 1px solid var(--portal-border);
    border-radius: 6px;
    padding: 1.15rem 1.25rem;
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.03);
}

.metric-label {
    font-size: 0.775rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--portal-text-muted);
}

.metric-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: #0f172a;
    margin-top: 0.35rem;
}

/* ---------------- Badges ---------------- */
.portal-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.65rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    line-height: 1;
}

.badge-draft { background-color: #f1f5f9; color: #475569; border: 1px solid #cbd5e1; }
.badge-submitted { background-color: #e0f2fe; color: #0369a1; border: 1px solid #bae6fd; }
.badge-under-review { background-color: #ede9fe; color: #6d28d9; border: 1px solid #ddd6fe; }
.badge-changes-requested { background-color: #fef3c7; color: #b45309; border: 1px solid #fde68a; }
.badge-resubmitted { background-color: #e0e7ff; color: #4338ca; border: 1px solid #c7d2fe; }
.badge-approved { background-color: #ecfdf5; color: #047857; border: 1px solid #a7f3d0; }
.badge-active { background-color: #ccfbf1; color: #0f766e; border: 1px solid #99f6e4; }
.badge-completed { background-color: #f1f5f9; color: #1e293b; border: 1px solid #94a3b8; }
.badge-rejected { background-color: #fef2f2; color: #b91c1c; border: 1px solid #fecaca; }

/* ---------------- Tables ---------------- */
.portal-table-container {
    overflow-x: auto;
    border: 1px solid var(--portal-border);
    border-radius: 6px;
    background: #ffffff;
}

.portal-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
    text-align: left;
}

.portal-table th {
    background-color: #f8fafc;
    color: #475569;
    font-weight: 600;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--portal-border);
    white-space: nowrap;
}

.portal-table td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid #f1f5f9;
    color: var(--portal-text-main);
    vertical-align: middle;
}

.portal-table tr:last-child td {
    border-bottom: none;
}

.portal-table tr:hover td {
    background-color: #f8fafc;
}

/* ---------------- Forms & Inputs ---------------- */
.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.25rem;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    font-size: 0.8125rem;
    font-weight: 600;
    color: #334155;
    margin-bottom: 0.375rem;
}

.form-group label span.required {
    color: #dc2626;
    margin-left: 2px;
}

.form-control, .form-select, textarea.form-control {
    width: 100%;
    padding: 0.55rem 0.75rem;
    font-size: 0.875rem;
    font-family: inherit;
    color: #0f172a;
    background-color: #ffffff;
    border: 1px solid #cbd5e1;
    border-radius: 4px;
    outline: none;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-control:focus, .form-select:focus, textarea.form-control:focus {
    border-color: var(--portal-secondary);
    box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.15);
}

.form-text {
    font-size: 0.75rem;
    color: var(--portal-text-muted);
    margin-top: 0.25rem;
}

/* ---------------- Buttons ---------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.875rem;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    cursor: pointer;
    border: 1px solid transparent;
    text-decoration: none;
    gap: 0.5rem;
    line-height: 1.25;
    transition: all 0.15s ease;
}

.btn-primary {
    background-color: var(--portal-secondary);
    color: #ffffff;
}

.btn-primary:hover {
    background-color: var(--portal-secondary-hover);
}

.btn-navy {
    background-color: var(--portal-primary);
    color: #ffffff;
}

.btn-navy:hover {
    background-color: var(--portal-primary-hover);
}

.btn-success {
    background-color: #059669;
    color: #ffffff;
}

.btn-success:hover {
    background-color: #047857;
}

.btn-danger {
    background-color: #dc2626;
    color: #ffffff;
}

.btn-danger:hover {
    background-color: #b91c1c;
}

.btn-warning {
    background-color: #d97706;
    color: #ffffff;
}

.btn-warning:hover {
    background-color: #b45309;
}

.btn-outline {
    background-color: #ffffff;
    border-color: #cbd5e1;
    color: #334155;
}

.btn-outline:hover {
    background-color: #f1f5f9;
    border-color: #94a3b8;
}

.btn-sm {
    padding: 0.35rem 0.65rem;
    font-size: 0.775rem;
}

/* ---------------- Alerts ---------------- */
.portal-alert {
    padding: 0.875rem 1.15rem;
    border-radius: 4px;
    font-size: 0.875rem;
    margin-bottom: 1.25rem;
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    border: 1px solid transparent;
}

.alert-success { background-color: #ecfdf5; border-color: #a7f3d0; color: #065f46; }
.alert-warning { background-color: #fffbeb; border-color: #fde68a; color: #92400e; }
.alert-danger { background-color: #fef2f2; border-color: #fecaca; color: #991b1b; }
.alert-info { background-color: #f0f9ff; border-color: #bae6fd; color: #075985; }

/* ---------------- Protocol Section Navigation ---------------- */
.protocol-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    background: #ffffff;
    padding: 0.75rem;
    border: 1px solid var(--portal-border);
    border-radius: 6px;
}

.protocol-nav-item {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.45rem 0.85rem;
    font-size: 0.8rem;
    font-weight: 600;
    color: #475569;
    text-decoration: none;
    border-radius: 4px;
    background-color: #f8fafc;
    border: 1px solid #e2e8f0;
    transition: all 0.15s ease;
}

.protocol-nav-item:hover {
    background-color: #f1f5f9;
    color: #0f172a;
}

.protocol-nav-item.active {
    background-color: #0284c7;
    border-color: #0284c7;
    color: #ffffff;
}

.protocol-nav-item.complete {
    border-color: #a7f3d0;
    background-color: #f0fdf4;
    color: #166534;
}

.protocol-nav-item.complete.active {
    background-color: #0284c7;
    border-color: #0284c7;
    color: #ffffff;
}

/* ---------------- Workflow Timeline ---------------- */
.workflow-timeline {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 1rem;
    background: #ffffff;
    border: 1px solid var(--portal-border);
    border-radius: 6px;
    margin-bottom: 1.5rem;
    overflow-x: auto;
    gap: 0.5rem;
}

.timeline-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    position: relative;
    flex: 1;
    min-width: 90px;
}

.timeline-circle {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background-color: #e2e8f0;
    color: #64748b;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
    margin-bottom: 0.4rem;
    z-index: 1;
}

.timeline-step.completed .timeline-circle {
    background-color: #059669;
    color: #ffffff;
}

.timeline-step.current .timeline-circle {
    background-color: #0284c7;
    color: #ffffff;
    box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.2);
}

.timeline-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: #64748b;
}

.timeline-step.completed .timeline-label {
    color: #059669;
}

.timeline-step.current .timeline-label {
    color: #0284c7;
    font-weight: 700;
}

/* ---------------- Empty State ---------------- */
.portal-empty-state {
    text-align: center;
    padding: 3rem 1.5rem;
    color: var(--portal-text-muted);
}

.portal-empty-state-icon {
    font-size: 2.5rem;
    margin-bottom: 0.75rem;
    color: #94a3b8;
}

.portal-empty-state-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: #334155;
    margin-bottom: 0.35rem;
}

.portal-empty-state-desc {
    font-size: 0.875rem;
    max-width: 400px;
    margin: 0 auto 1.25rem;
}

/* ---------------- Modal ---------------- */
.portal-modal-backdrop {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(15, 23, 42, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1050;
}

.portal-modal {
    background: #ffffff;
    border-radius: 6px;
    width: 100%;
    max-width: 550px;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.portal-modal-header {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--portal-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.portal-modal-title {
    font-size: 1.1rem;
    font-weight: 700;
    margin: 0;
    color: #0f172a;
}

.portal-modal-body {
    padding: 1.25rem;
}

.portal-modal-footer {
    padding: 0.875rem 1.25rem;
    background: #f8fafc;
    border-top: 1px solid var(--portal-border);
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
}

/* ---------------- Responsive ---------------- */
@media (max-width: 992px) {
    .portal-sidebar:not(.sidebar--collapsed) {
        width: 64px;
    }
    .portal-sidebar:not(.sidebar--collapsed) .portal-sidebar-brand span.brand-text,
    .portal-sidebar:not(.sidebar--collapsed) .portal-menu-header,
    .portal-sidebar:not(.sidebar--collapsed) .portal-menu-item span.menu-text,
    .portal-sidebar:not(.sidebar--collapsed) .sidebar-toggle-btn .toggle-label {
        display: none;
    }
    .portal-sidebar:not(.sidebar--collapsed) .portal-menu-item {
        justify-content: center;
        padding: 0.75rem;
    }
    .portal-sidebar:not(.sidebar--collapsed) .portal-sidebar-brand {
        justify-content: center;
        padding: 1.25rem 0.5rem;
    }
}

/* ==========================================================================
   Password Toggle (Eye Button) - used on all password inputs site-wide
   ========================================================================== */
.password-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}
.password-wrapper .form-control {
    padding-right: 2.75rem !important;
    flex: 1;
}
.btn-pwd-toggle {
    position: absolute;
    right: 0.625rem;
    background: none;
    border: none;
    cursor: pointer;
    color: #94a3b8;
    padding: 0.25rem 0.4rem;
    line-height: 1;
    font-size: 0.95rem;
    transition: color 0.15s ease;
    z-index: 2;
}
.btn-pwd-toggle:hover { color: #0284c7; }
.btn-pwd-toggle:focus { outline: none; }