:root {
    --bs-primary: #0f4761;
    --bs-secondary: #791135;
    --primary-color: #0f4761;
    --secondary-color: #791135;
    --third-color: #000000;
    --white: #ffffff;
    --light-gray: #f5f5f5;
    --gray: #cccccc;
    --dark-gray: #666666;
    --error-color: #d32f2f;
    --success-color: #388e3c;
    --border-radius: 8px;
    --box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

/* Bootstrap Color Overrides */
.btn-primary {
    --bs-btn-bg: var(--primary-color);
    --bs-btn-border-color: var(--primary-color);
    --bs-btn-hover-bg: #0d3d52;
    --bs-btn-hover-border-color: #0d3d52;
    --bs-btn-active-bg: #0b3445;
    --bs-btn-active-border-color: #0b3445;
    --bs-btn-focus-shadow-rgb: 15, 71, 97;
}

.btn-secondary {
    --bs-btn-bg: var(--secondary-color);
    --bs-btn-border-color: var(--secondary-color);
    --bs-btn-hover-bg: #67102d;
    --bs-btn-hover-border-color: #67102d;
    --bs-btn-active-bg: #550e25;
    --bs-btn-active-border-color: #550e25;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.25rem rgba(15, 71, 97, 0.25);
}

/* Hide form-check-input (card/label shows selected state) */
.form-check-input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
    margin: 0;
    padding: 0;
    pointer-events: none;
}

/* Remove round - make radio and checkbox square */
.form-check-input[type="radio"],
.form-check-input[type="checkbox"] {
    border-radius: 0;
}

.form-check-input[type="checkbox"] {
    background-color: transparent;
}

.form-check-input[type="checkbox"]:checked {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    background-image: none;
}

.form-check-input[type="radio"]:checked {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    background-image: none;
}

.form-check-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.25rem rgba(15, 71, 97, 0.25);
}

/* Base Styles */
html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--third-color);
    background-color: var(--light-gray);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* ============================================
   LOGIN PAGE STYLES
   ============================================ */

.login-page {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
}

.login-wrapper {
    max-width: 420px;
    margin: 0 auto;
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    overflow: hidden;
    animation: slideUp 0.4s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    padding: 2rem 1.5rem;
}

.logo {
    max-width: 80px;
    height: auto;
    border-radius: 50%;
    background: var(--white);
    padding: 0.5rem;
}

.app-title {
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.app-subtitle {
    font-size: 0.95rem;
    font-weight: 400;
    opacity: 0.95;
    letter-spacing: 0.3px;
}

.login-form-container {
    padding: 2rem 1.5rem;
}

/* ============================================
   FORM STYLES (Reusable - Bootstrap Enhanced)
   ============================================ */

.form-label {
    font-weight: 600;
    letter-spacing: 0.2px;
    margin-bottom: 0.5rem;
}

.form-control {
    border-radius: var(--border-radius);
    transition: var(--transition);
    font-size: 1rem;
}

.form-control::placeholder {
    color: var(--dark-gray);
    opacity: 0.7;
}

.form-check-label {
    font-size: 0.9rem;
    color: var(--dark-gray);
    cursor: pointer;
}

/* ============================================
   BUTTON STYLES (Reusable - Bootstrap Enhanced)
   ============================================ */

.btn {
    border-radius: var(--border-radius);
    font-weight: 600;
    letter-spacing: 0.3px;
    transition: var(--transition);
    -webkit-tap-highlight-color: transparent;
}

.btn:active {
    transform: scale(0.98);
}

.btn-primary {
    box-shadow: 0 2px 8px rgba(15, 71, 97, 0.3);
}

.btn-primary:hover,
.btn-primary:focus {
    box-shadow: 0 4px 12px rgba(15, 71, 97, 0.4);
}

/* ============================================
   LINK STYLES (Reusable)
   ============================================ */

.link {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
}

.link:hover,
.link:focus {
    color: var(--secondary-color);
    text-decoration: underline;
}

.link:active {
    opacity: 0.8;
}

.form-footer {
    padding-top: 1.5rem;
    border-top: 1px solid var(--gray);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

/* Small devices (landscape phones, 576px and up) */
@media (min-width: 576px) {
    .login-wrapper {
        max-width: 450px;
    }

    .login-header {
        padding: 2.5rem 2rem;
    }

    .login-form-container {
        padding: 2.5rem 2rem;
    }
}

/* Medium devices (tablets, 768px and up) */
@media (min-width: 768px) {
    html {
        font-size: 17px;
    }

    .login-wrapper {
        max-width: 480px;
    }

    .app-title {
        font-size: 2rem;
    }

    .app-subtitle {
        font-size: 1rem;
    }
}

/* Large devices (desktops, 992px and up) */
@media (min-width: 992px) {
    .login-wrapper {
        max-width: 500px;
    }
}

/* Extra large devices (large desktops, 1200px and up) */
@media (min-width: 1200px) {
    html {
        font-size: 18px;
    }
}

/* Landscape orientation adjustments */
@media (orientation: landscape) and (max-height: 600px) {
    .login-header {
        padding: 1.5rem 1.5rem;
    }

    .login-form-container {
        padding: 1.5rem 1.5rem;
    }

    .mb-3 {
        margin-bottom: 1rem !important;
    }
}

/* Touch device optimizations */
@media (hover: none) and (pointer: coarse) {
    .btn {
        min-height: 44px;
    }

    .form-control {
        min-height: 44px;
        font-size: 16px; /* Prevents zoom on iOS */
    }

    .form-check-input {
        width: 24px;
        height: 24px;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .form-control {
        border-width: 3px;
    }

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

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ============================================
   FORM PAGE STYLES
   ============================================ */

.form-page {
    background-color: var(--light-gray);
    min-height: 100vh;
    padding-bottom: 80px; /* Space for sticky footer */
}

/* Header */
.app-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.app-header .btn-outline-primary {
    --bs-btn-color: var(--white);
    --bs-btn-border-color: var(--white);
    --bs-btn-hover-bg: rgba(255, 255, 255, 0.2);
    --bs-btn-hover-border-color: var(--white);
    --bs-btn-active-bg: rgba(255, 255, 255, 0.3);
    --bs-btn-active-border-color: var(--white);
}

.header-logo {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--white);
    padding: 0.25rem;
    object-fit: cover;
}

.app-header h5 {
    color: var(--white);
}

.app-header .text-muted {
    color: rgba(255, 255, 255, 0.8) !important;
}

/* Main Content */
.main-content {
    max-width: 1200px;
    margin: 0 auto;
}


/* Form Sections */
.form-section {
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    overflow: hidden;
    margin-bottom: 1.5rem;
}

.section-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    padding: 1rem 1.5rem;
    color: var(--white);
    cursor: pointer;
    user-select: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: var(--transition);
    -webkit-tap-highlight-color: transparent;
}

.section-header:hover {
    background: linear-gradient(135deg, #0d3d52 0%, #67102d 100%);
}

.section-header:active {
    opacity: 0.9;
}

.section-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0;
    color: var(--white);
    display: flex;
    align-items: center;
    flex: 1;
}

.section-toggle-icon {
    color: var(--white);
    font-size: 1rem;
    transition: transform 0.3s ease;
    flex-shrink: 0;
    margin-left: 1rem;
}

.section-header[aria-expanded="false"] .section-toggle-icon {
    transform: rotate(-90deg);
}

.section-header[aria-expanded="true"] .section-toggle-icon {
    transform: rotate(0deg);
}

/* Collapse animation */
.collapse {
    transition: height 0.35s ease;
}

.collapsing {
    transition: height 0.35s ease;
    overflow: hidden;
}

.section-body {
    padding: 1.5rem;
}

/* Styled Form Check Cards (Mobile-Friendly) */
.form-check-card {
    background: var(--light-gray);
    border: 2px solid var(--gray);
    border-radius: 25px;
    padding: 0.75rem 1rem;
    margin-bottom: 0;
    transition: var(--transition);
    cursor: pointer;
    min-height: 40px; /* Touch-friendly */
    display: flex;
    align-items: center;
}

.form-check-card:hover {
    border-color: var(--primary-color);
    background: rgba(15, 71, 97, 0.05);
}

.form-check-card .form-check-input {
    margin-top: 0;
    margin-right: 0.75rem;
    cursor: pointer;
    flex-shrink: 0;
    border-radius: 0;
}

.form-check-card .form-check-label {
    cursor: pointer;
    flex: 1;
    margin: 0;
    font-weight: 500;
    color: var(--third-color);
}

.form-check-card {
    position: relative;
}

/* Unselected: normal gray border and background */
.form-check-card:not(:has(.form-check-input:checked)) {
    border-color: var(--gray);
    background: var(--light-gray);
    box-shadow: none;
}

/* Selected: full card highlighted, white text */
.form-check-card:has(.form-check-input:checked),
.form-check-card.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(15, 71, 97, 0.25);
}

.form-check-card .form-check-label {
    color: var(--third-color);
}

.form-check-card:has(.form-check-input:checked) .form-check-label {
    color: var(--white) !important;
    font-weight: 600;
}

/* Radio: solid fill when selected, no inner indicator */
.form-check-card .form-check-input[type="radio"]:checked {
    background-color: var(--primary-color);
    border-color: var(--white);
    background-image: none;
}

/* Checkbox: solid fill when selected, no checkmark; no fill when unchecked */
.form-check-card .form-check-input[type="checkbox"] {
    background-color: transparent;
}

.form-check-card .form-check-input[type="checkbox"]:checked {
    background-color: var(--primary-color);
    border-color: var(--white);
    background-image: none;
}

/* Radio Button Groups */
.btn-group .btn-check:checked + .btn {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: var(--white);
}

.btn-group .btn-outline-primary {
    --bs-btn-color: var(--primary-color);
    --bs-btn-border-color: var(--primary-color);
    --bs-btn-hover-bg: var(--primary-color);
    --bs-btn-hover-border-color: var(--primary-color);
    --bs-btn-active-bg: var(--primary-color);
    --bs-btn-active-border-color: var(--primary-color);
    font-weight: 600;
    min-height: 44px;
}

/* Form Controls */
.form-control {
    min-height: 44px; /* Touch-friendly */
    border: 2px solid var(--gray);
    font-size: 1rem; /* Prevents zoom on iOS */
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.25rem rgba(15, 71, 97, 0.15);
}

/* Form Labels */
.form-label {
    font-weight: 600;
    color: var(--third-color);
    margin-bottom: 0.75rem;
    font-size: 0.95rem;
}

.form-label .field-filled-tick {
    vertical-align: middle;
    opacity: 0.9;
}

/* Form Actions (Sticky Footer) */
.form-actions {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
}

.form-actions .btn {
    min-height: 44px;
    font-weight: 600;
    padding: 0.75rem 1.5rem;
}

/* Conditional Fields */
.antiarrhythmic-drugs,
.closure-device-options {
    padding: 1rem;
    background: rgba(15, 71, 97, 0.05);
    border-radius: var(--border-radius);
    border: 1px solid var(--gray);
}

/* Time Input Styling */
.row.align-items-end {
    align-items: flex-end;
}

.row.align-items-end .col-1 {
    padding-bottom: 0.5rem;
}

/* Signature Section */
.registry-note {
    padding: 1rem;
    background: rgba(15, 71, 97, 0.05);
    border-left: 4px solid var(--primary-color);
    border-radius: var(--border-radius);
    margin-top: 1.5rem;
}

.registry-note p {
    line-height: 1.6;
}

.registry-note i {
    color: var(--primary-color);
}

/* Signature inputs styling */
#abstractorInitials {
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

#signatureDate {
    cursor: pointer;
}

/* Signature Pad Styling */
.signature-pad-wrapper {
    border: 2px solid var(--gray);
    border-radius: var(--border-radius);
    background: var(--white);
    padding: 1rem;
    position: relative;
}

.signature-canvas {
    width: 100%;
    height: 200px;
    border: 1px dashed var(--gray);
    border-radius: var(--border-radius);
    background: var(--white);
    cursor: crosshair;
    touch-action: none;
    -webkit-tap-highlight-color: transparent;
    display: block;
}

.signature-canvas:active {
    cursor: crosshair;
}

.signature-pad-actions {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.signature-status {
    display: inline-flex;
    align-items: center;
}

/* Mobile optimizations for signature pad */
@media (max-width: 575.98px) {
    .signature-canvas {
        height: 200px;
    }
    
    .signature-pad-actions {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .signature-status {
        width: 100%;
        margin-top: 0.5rem;
    }
}

/* Touch device optimizations */
@media (hover: none) and (pointer: coarse) {
    .signature-canvas {
        height: 200px;
    }
    
    .signature-pad-wrapper {
        padding: 0.75rem;
    }
}

/* Landscape orientation */
@media (orientation: landscape) and (max-height: 600px) {
    .signature-canvas {
        height: 200px;
    }
}

/* Responsive Adjustments for Form Sections */
@media (max-width: 575.98px) {
    .section-body {
        padding: 1rem;
    }

    .section-header {
        padding: 0.875rem 1rem;
        min-height: 48px; /* Touch-friendly */
    }

    .section-title {
        font-size: 1.1rem;
    }
    
    .section-toggle-icon {
        font-size: 0.9rem;
        margin-left: 0.5rem;
    }
    
    .mobile-nav-helper {
        top: 56px;
        padding: 0.75rem;
    }
    
    .mobile-nav-helper .btn {
        font-size: 0.85rem;
        padding: 0.5rem 0.75rem;
    }

    .form-check-card {
        padding: 0.625rem 0.875rem;
        font-size: 0.9rem;
    }

    .form-actions .btn {
        font-size: 0.9rem;
        padding: 0.625rem 1rem;
    }

    .form-actions .d-flex {
        flex-direction: column;
    }

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

@media (min-width: 576px) and (max-width: 767.98px) {
    .form-check-card {
        padding: 0.75rem 0.875rem;
    }
}

@media (min-width: 768px) {
    .section-body {
        padding: 2rem;
    }

    .section-header {
        padding: 1.25rem 2rem;
    }

    .section-title {
        font-size: 1.35rem;
    }
}

/* Landscape orientation adjustments */
@media (orientation: landscape) and (max-height: 600px) {
    .form-page {
        padding-bottom: 70px;
    }

    .section-body {
        padding: 1rem;
    }

    .form-check-card {
        padding: 0.5rem 0.75rem;
        min-height: 35px;
    }
}

/* Touch device optimizations */
@media (hover: none) and (pointer: coarse) {
    .form-check-card {
        min-height: 35px;
        padding: 0.875rem 1rem;
    }

    .form-check-card .form-check-input {
        width: 22px;
        height: 22px;
    }

    .btn-group .btn {
        min-height: 48px;
    }
}

/* Print Styles */
@media print {
    .app-header,
    .form-actions {
        display: none;
    }

    .form-page {
        padding-bottom: 0;
    }

    .form-section {
        page-break-inside: avoid;
        box-shadow: none;
        border: 1px solid var(--gray);
    }
}

/* ============================================
   LANDING & ADDITIONAL PAGE STYLES
   ============================================ */

.landing-page {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.site-card-hover:hover {
    background: rgba(15, 71, 97, 0.05) !important;
}

/* Nav tabs - primary color for active */
.nav-tabs .nav-link {
    color: var(--dark-gray);
    font-weight: 600;
}

.nav-tabs .nav-link.active {
    color: var(--primary-color);
    border-color: var(--light-gray) var(--light-gray) var(--white);
    background: var(--white);
}

/* Nav pills */
.nav-pills .nav-link {
    color: var(--dark-gray);
    font-weight: 600;
}

.nav-pills .nav-link.active {
    background: rgba(15, 71, 97, 0.15);
    color: var(--primary-color);
}

/* btn-outline-success override */
.btn-outline-success {
    --bs-btn-color: var(--success-color);
    --bs-btn-border-color: var(--success-color);
    --bs-btn-hover-bg: var(--success-color);
    --bs-btn-hover-border-color: var(--success-color);
    --bs-btn-hover-color: var(--white);
}

.btn-outline-danger {
    --bs-btn-color: var(--error-color);
    --bs-btn-border-color: var(--error-color);
    --bs-btn-hover-bg: var(--error-color);
    --bs-btn-hover-border-color: var(--error-color);
    --bs-btn-hover-color: var(--white);
}

/* ============================================
   BOTTOM NAVBAR (from project tabs)
   ============================================ */

/* Project theme: tabBar #0f0f1f, primary #4F8EF7, border #1a1a2e */
.app-navbar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: #0f0f1f;
    border-top: 1px solid #1a1a2e;
    min-height: 65px;
    padding-top: 10px;
    padding-bottom: max(10px, env(safe-area-inset-bottom));
    display: flex;
    align-items: center;
    justify-content: space-around;
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.15);
}

.form-page.has-navbar {
    padding-bottom: calc(85px + env(safe-area-inset-bottom, 0px));
}

.app-navbar__item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 4px 8px;
    color: #666666;
    text-decoration: none;
    font-size: 11px;
    font-weight: 600;
    transition: color 0.2s ease;
    -webkit-tap-highlight-color: transparent;
}

.app-navbar__item:hover,
.app-navbar__item.active {
    color: #4F8EF7;
}

.app-navbar__item i {
    font-size: 22px;
    margin-bottom: 4px;
}

.app-navbar__item--add {
    flex: 0 0 auto;
    width: 50px;
    height: 50px;
    border-radius: 25px;
    background-color: #4F8EF7;
    color: #fff !important;
    margin-bottom: 20px;
    box-shadow: 0 4px 12px rgba(79, 142, 247, 0.4);
}

.app-navbar__item--add i {
    font-size: 24px;
    margin-bottom: 0;
}

.app-navbar__item--add .app-navbar__label {
    display: none;
}

.app-navbar__item .app-navbar__label {
    line-height: 1;
}

.app-navbar__item--add:hover {
    color: #fff !important;
    background-color: #3d7de6;
}

/* Weekly Trend Chart */
.weekly-trend-chart {
    display: flex;
    align-items: stretch;
    gap: 0.5rem;
    height: 200px;
    padding: 0.5rem 0;
}

.chart-bars {
    flex: 1;
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 0.25rem;
    min-height: 0;
}

.chart-bar-wrap {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 0;
}

.chart-value {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 0.25rem;
    flex-shrink: 0;
}

.chart-bar-container {
    width: 100%;
    height: 120px;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    flex-shrink: 0;
}

.chart-bar {
    width: 100%;
    max-width: 36px;
    min-height: 4px;
    background: linear-gradient(180deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    border-radius: 4px 4px 0 0;
    transition: opacity 0.2s ease;
}

.chart-bar-wrap:hover .chart-bar {
    opacity: 0.85;
}

.chart-label {
    font-size: 0.7rem;
    color: var(--dark-gray);
    margin-top: 0.5rem;
    font-weight: 500;
    flex-shrink: 0;
}

.chart-y-axis {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    font-size: 0.65rem;
    color: var(--dark-gray);
    padding-bottom: 1.75rem;
    margin-right: 0.5rem;
    flex-shrink: 0;
}

/* ============================================
   REPORTS PAGE
   ============================================ */

 
.reports-header-btn {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.6);
    color: var(--white);
    font-weight: 600;
}

.reports-header-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    border-color: var(--white);
    color: var(--white);
}

/* Reports section headers - no collapse cursor */
.reports-body .section-header {
    cursor: default;
}

.reports-body .section-header:hover {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
}

/* Nav tabs full width on mobile */
.nav-tabs.nav-fill .nav-link {
    font-size: 0.85rem;
    padding: 0.6rem 0.5rem;
}

@media (min-width: 768px) {
    .nav-tabs.nav-fill .nav-link {
        font-size: 0.95rem;
        padding: 0.75rem 1rem;
    }
}