:root {
    --primary-color: #4f46e5;
    --secondary-color: #6366f1;
    --accent-color: #10b981;
    --bg-color: #f8fafc;
    --surface-color: #ffffff;
    --text-color: #0f172a;
    --text-secondary-color: #475569;
    --border-color: #e2e8f0;
    --shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -4px rgba(0, 0, 0, 0.05), 0 0 0 1px rgba(0, 0, 0, 0.02);
    --font-main: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

body.dark-theme {
    --primary-color: #818cf8;    
    --secondary-color: #6366f1;
    --accent-color: #34d399; 
    --bg-color: #0f172a;
    --surface-color: #1e293b; 
    --text-color: #f8fafc; 
    --text-secondary-color: #94a3b8;
    --border-color: #334155;
    --shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -4px rgba(0, 0, 0, 0.3);
}

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

body {
    font-family: var(--font-main);
    background-color: var(--bg-color);
    color: var(--text-color);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    transition: background-color 0.3s, color 0.3s;
}

.main-header {
    background-color: var(--surface-color);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: background-color 0.3s, border-color 0.3s;
}

.logo-container { display: flex; align-items: center; gap: 1rem; }
.logo { height: 50px; width: auto; }
.main-header h1 { font-size: 1.5rem; color: var(--primary-color); }

.header-controls { display: flex; align-items: center; gap: 1.5rem; }
.contact-info { text-align: right; }
.contact-info p { font-size: 0.9rem; color: var(--text-secondary-color); line-height: 1.4; }

.theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary-color);
}
.theme-toggle:hover { color: var(--primary-color); background-color: rgba(0,0,0,0.1); }
body.dark-theme .theme-toggle:hover { background-color: rgba(255,255,255,0.1); }

.theme-toggle .icon-moon { display: none; }
body.dark-theme .theme-toggle .icon-moon { display: block; }
body.dark-theme .theme-toggle .icon-sun { display: none; }

main {
    flex-grow: 1;
    padding: 2rem;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
}

#app {
    background-color: var(--surface-color);
    border-radius: 8px;
    box-shadow: var(--shadow);
    padding: 2rem;
    min-height: 400px;
    transition: background-color 0.3s;
}

.main-footer {
    background-color: var(--primary-color);
    color: var(--white-color, #fff);
    text-align: center;
    padding: 1rem;
    font-size: 0.8rem;
    transition: background-color 0.3s;
}
body.dark-theme .main-footer { color: var(--bg-color); }


@media (max-width: 768px) {
    .main-header {
        flex-direction: column;
        gap: 1rem;
        padding: 1rem;
    }
    .header-controls { flex-direction: column; gap: 1rem; }
    .contact-info { text-align: center; }
    main { padding: 1rem; }
    #app { padding: 1.5rem; }
}


.home-container {
    text-align: center;
}

.home-container h2 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.home-container p {
    color: var(--text-secondary-color);
    margin-bottom: 2.5rem;
}

.home-actions {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap; 
    margin-bottom: 3rem;
}

.btn {
    padding: 1rem 2rem;
    font-size: 1.1rem;
    font-weight: bold;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    box-shadow: var(--shadow);
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 12px rgba(0,0,0,0.15);
}
body.dark-theme .btn:hover {
    box-shadow: 0 6px 12px rgba(0,0,0,0.4);
}

.btn-primary {
    background-color: var(--secondary-color);
    color: var(--white-color, #fff);
}
body.dark-theme .btn-primary {
    color: #121212; 
}

.btn-secondary {
    background-color: var(--surface-color);
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}


.tests-rates-preview {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

#tests-list-container {
    margin-top: 1rem;
    color: var(--text-secondary-color);
}

.form-container {
    max-width: 600px;
    margin: 0 auto;
}

.form-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.form-header h2 {
    color: var(--primary-color);
}

.btn-back {
    background: none;
    border: none;
    color: var(--text-secondary-color);
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: bold;
}
.btn-back:hover {
    color: var(--primary-color);
}

.form-group {
    margin-bottom: 1.5rem;
    display: flex;
    flex-direction: column;
}

.form-group label {
    margin-bottom: 0.5rem;
    font-weight: bold;
    color: var(--text-secondary-color);
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 1rem;
    background-color: var(--bg-color);
    color: var(--text-color);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.2);
}

.form-actions {
    margin-top: 2rem;
    text-align: right; 
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
}

.search-bar-container {
    margin-bottom: 2rem;
}

#patient-search-input {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 1.1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: var(--bg-color);
    color: var(--text-color);
}
#patient-search-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.2);
}

#patient-list {
    list-style: none;
    padding: 0;
    display: grid;
    gap: 1rem;
}

.patient-list-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
}

.patient-list-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
    border-color: var(--primary-color);
}
body.dark-theme .patient-list-item:hover {
    border-color: var(--primary-color);
}

.patient-info {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.patient-name {
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--text-color);
}

.patient-id {
    font-size: 0.9rem;
    color: var(--text-secondary-color);
}

.error-container {
    text-align: center;
    padding: 2rem;
}

.error-container h2 {
    color: #e53935; 
}

.error-message-box {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem;
    margin: 2rem 0;
    text-align: left;
    color: var(--text-secondary-color);
    font-family: monospace;
}

.error-message-box pre {
    white-space: pre-wrap; 
    word-break: break-all;
}

.patient-details-header {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem 2rem;
    padding: 1.5rem;
    background-color: var(--bg-color);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    margin-bottom: 2rem;
}

.detail-item {
    font-size: 1rem;
}
.detail-item strong {
    color: var(--text-secondary-color);
}
.detail-full-width {
    width: 100%;
}

.records-section {
    margin-top: 1rem;
}

.records-list {
    margin-top: 1rem;
    margin-bottom: 2rem;
}

.no-records {
    padding: 2rem;
    text-align: center;
    color: var(--text-secondary-color);
    background-color: var(--bg-color);
    border-radius: 8px;
}

.record-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 0.5rem;
}

#modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2000;
}

#modal-content {
    background-color: var(--surface-color);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
    width: 90%;
    max-width: 500px;
}

#modal-content h3 {
    text-align: center;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.tab-nav {
    display: flex;
    border-bottom: 2px solid var(--border-color);
    margin-bottom: 1.5rem;
    overflow-x: auto; 
}

.tab-btn {
    padding: 0.75rem 1.5rem;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    color: var(--text-secondary-color);
    border-bottom: 3px solid transparent;
    transition: color 0.2s, border-color 0.2s;
}

.tab-btn:hover {
    color: var(--primary-color);
}

.tab-btn.active {
    color: var(--primary-color);
    font-weight: bold;
    border-bottom-color: var(--primary-color);
}

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
}

.test-group {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.test-group legend {
    font-weight: bold;
    color: var(--primary-color);
    padding: 0 0.5rem;
    margin-left: 1rem;
}

.form-group-inline {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 1rem;
    align-items: center;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--bg-color); 
}

.form-group-inline:last-child {
    border-bottom: none;
}

.form-group-inline label {
    font-weight: normal;
    text-align: right;
}

@media (max-width: 600px) {
    .form-group-inline {
        grid-template-columns: 1fr;
        gap: 0.5rem;
        border-bottom: 1px solid var(--border-color);
        padding-bottom: 1rem;
    }
    .form-group-inline label {
        text-align: left;
    }
}

.normal-value {
    font-size: 0.8rem;
    color: var(--text-secondary-color);
    font-style: italic;
    justify-self: start;
}

.form-group-inline {
    display: grid;
    grid-template-columns: 200px 1fr 1fr; 
    gap: 1rem;
    align-items: center;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--bg-color);
}
.form-group-inline > div { 
    grid-column: 2;
}
.form-group-inline > .normal-value {
    grid-column: 3;
}

@media (max-width: 768px) {
     .form-group-inline {
        grid-template-columns: 1fr;
        gap: 0.5rem;
        border-bottom: 1px solid var(--border-color);
        padding-bottom: 1rem;
    }
    .form-group-inline > label,
    .form-group-inline > div,
    .form-group-inline > .normal-value {
        grid-column: 1; 
        text-align: left;
    }
}

.report-view-container {
    background-color: var(--white-color);
    color: #000; 
    padding: 2rem;
    border-radius: 0;
}
body.dark-theme .report-view-container {
    background-color: var(--surface-color);
    color: var(--text-color);
}
.report-actions.top {
    display: flex;
    justify-content: space-between;
    margin-bottom: 2rem;
}
.report-header { text-align: center; margin-bottom: 2rem; }
.patient-details-header.report-view { background: none; border: 1px solid #ccc; }
.report-body { margin-top: 2rem; }
.report-body h3 { 
    background-color: #eee;
    padding: 0.5rem;
    margin-top: 1.5rem;
    border-top: 2px solid #ccc;
    border-bottom: 1px solid #ccc;
}
body.dark-theme .report-body h3 {
    background-color: var(--bg-color);
    border-color: var(--border-color);
}
.report-body h4 { margin-top: 1rem; margin-bottom: 0.5rem; border-bottom: 1px dashed #ccc; }
.results-table { width: 100%; border-collapse: collapse; margin-bottom: 1rem; }
.results-table th, .results-table td {
    border: 1px solid #ddd;
    padding: 0.5rem;
    text-align: left;
}
body.dark-theme .results-table th, body.dark-theme .results-table td { border-color: var(--border-color); }
.results-table th { background-color: #f2f2f2; }
body.dark-theme .results-table th { background-color: var(--bg-color); }
.report-footer { margin-top: 4rem; text-align: right; }
.signature-line { border-top: 1px solid #000; width: 200px; display: inline-block; padding-top: 0.5rem; text-align: center; }

.report-actions.top {
    align-items: flex-start; 
}
.report-actions.top > div {
    display: flex;
    gap: 1rem;
}

.btn-icon {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
    font-weight: bold;
    border: 0.1rem solid black;
    border-radius: 8px;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    display: flex;
    align-items: center;
    gap: 0.3rem;
    box-shadow: var(--shadow);
}

.btn-icon:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 12px rgba(0,0,0,0.15);
}


.bill-table input.price-input {
    width: 100px;
    padding: 0.25rem;
    font-size: 1rem;
    text-align: left;
    border: 1px solid var(--border-color);
    background-color: var(--bg-color);
    color: var(--text-color);
}
.bill-table .total-label {
    text-align: right;
    font-weight: bold;
    font-size: 1.2rem;
}
.bill-table .total-amount {
    font-weight: bold;
    font-size: 1.2rem;
    color: var(--primary-color);
    text-align: right;
}

.print-header {
    display: none; 
}

.total-cell {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 0.5rem;
    text-align: right;
}
#currency-selector {
    padding: 0.25rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: var(--bg-color);
    color: var(--text-color);
}

/* Custom Dialog / Modal Popups */
.custom-dialog-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.55);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    backdrop-filter: blur(2px);
}

.custom-dialog-box {
    background-color: var(--surface-color);
    color: var(--text-color);
    border-radius: 8px;
    width: 90%;
    max-width: 420px;
    padding: 1.75rem;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    border: 1px solid var(--border-color);
    animation: dialogFadeIn 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.custom-dialog-header {
    font-weight: bold;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.75rem;
    margin-bottom: 1.25rem;
    color: var(--primary-color);
}

.custom-dialog-body {
    font-size: 1rem;
    color: var(--text-color);
    line-height: 1.6;
    margin-bottom: 1.75rem;
}

.custom-dialog-footer {
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
}

@keyframes dialogFadeIn {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(10px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

/* Login Page & Glassmorphism styles */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 400px;
    padding: 1rem 0;
}

.login-card {
    width: 100%;
    max-width: 400px;
    padding: 2.5rem;
    border-radius: 12px;
    background: var(--surface-color);
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.glassmorphic-card {
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

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

.login-logo {
    height: 60px;
    width: auto;
    border-radius: 50%;
    margin-bottom: 1rem;
    box-shadow: var(--shadow);
}

.login-header h2 {
    color: var(--primary-color);
    font-size: 1.6rem;
    margin-bottom: 0.5rem;
}

.login-header p {
    color: var(--text-secondary-color);
    font-size: 0.9rem;
}

.login-btn {
    width: 100%;
    justify-content: center;
    margin-top: 1.5rem;
}

.login-error-msg {
    background-color: rgba(239, 68, 68, 0.1);
    color: #ef4444;
    border: 1px solid rgba(239, 68, 68, 0.2);
    border-radius: 6px;
    padding: 0.75rem;
    font-size: 0.9rem;
    text-align: center;
    margin-top: 1rem;
    margin-bottom: 1rem;
    transition: all 0.3s ease;
}

body.dark-theme .login-error-msg {
    background-color: rgba(239, 68, 68, 0.2);
    color: #f87171;
    border-color: rgba(239, 68, 68, 0.3);
}

.login-help {
    text-align: center;
    margin-top: 2rem;
    font-size: 0.85rem;
    color: var(--text-secondary-color);
    border-top: 1px dashed var(--border-color);
    padding-top: 1rem;
}

.login-help strong {
    color: var(--primary-color);
}

.hidden {
    display: none !important;
}

/* Header buttons & auth transitions */
.header-actions-container {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.btn-header-action {
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 500;
}

.btn-header-logout {
    background-color: transparent;
    color: var(--text-secondary-color);
    border: 1px solid var(--border-color);
}

.btn-header-logout:hover {
    color: #ef4444;
    border-color: rgba(239, 68, 68, 0.4);
    background-color: rgba(239, 68, 68, 0.05);
}

body.dark-theme .btn-header-logout:hover {
    background-color: rgba(239, 68, 68, 0.1);
}

.btn-header-password {
    background-color: transparent;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
}

.btn-header-password:hover {
    background-color: rgba(99, 102, 241, 0.08);
}