/* === Design System Variables === */
:root {
    --bg: #F2F2F7;
    --card: #FFFFFF;
    --text: #1C1C1E;
    --text-secondary: #8E8E93;
    --blue: #007AFF;
    --green: #34C759;
    --orange: #FF9500;
    --red: #FF3B30;
    --purple: #AF52DE;
    --separator: rgba(60, 60, 67, 0.1);
    --radius: 14px;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.08);
    --border: rgba(60, 60, 67, 0.15);
    --header-height: 96px;
    --tab-height: 83px;
}

/* === Reset & Base === */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    -webkit-text-size-adjust: 100%;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', sans-serif;
    background: var(--bg);
    color: var(--text);
    font-size: 16px;
    line-height: 1.5;
    padding-top: var(--header-height);
    padding-bottom: var(--tab-height);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* === Sticky Header === */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(242, 242, 247, 0.72);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 0.5px solid var(--separator);
    height: var(--header-height);
    display: flex;
    align-items: flex-end;
    padding: 0 20px 12px;
}

.header-content {
    width: 100%;
}

.header-title {
    font-size: 34px;
    font-weight: 700;
    letter-spacing: -0.5px;
    line-height: 1.1;
    color: var(--text);
}

.header-subtitle {
    font-size: 15px;
    color: var(--text-secondary);
    font-weight: 400;
    margin-top: 2px;
}

/* === Tab Bar === */
.tab-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(249, 249, 249, 0.94);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-top: 0.5px solid var(--separator);
    display: flex;
    justify-content: space-around;
    align-items: flex-start;
    padding: 6px 0 0;
    height: var(--tab-height);
    padding-bottom: env(safe-area-inset-bottom, 20px);
}

.tab-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3px;
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 10px;
    font-weight: 500;
    padding: 4px 12px;
    transition: color 0.2s;
    -webkit-tap-highlight-color: transparent;
}

.tab-item.active {
    color: var(--blue);
}

.tab-icon {
    width: 24px;
    height: 24px;
}

.tab-icon-i {
    font-size: 24px;
    line-height: 1;
}

/* === Main Content === */
#app {
    padding: 16px;
    min-height: calc(100vh - var(--header-height) - var(--tab-height));
}

/* === Page Transition === */
.page-enter {
    animation: fadeIn 0.3s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* === Cards === */
.card {
    background: var(--card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 16px;
    margin-bottom: 12px;
}

.card-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}

.card-icon {
    font-size: 20px;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    flex-shrink: 0;
}

.card-title {
    font-size: 17px;
    font-weight: 600;
    color: var(--text);
}

.card-subtitle {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 1px;
}

.card-content {
    font-size: 15px;
    color: var(--text);
    line-height: 1.5;
}

/* === Patient Gradient Card === */
.patient-card {
    background: linear-gradient(135deg, #007AFF 0%, #AF52DE 100%);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 16px;
    color: #FFFFFF;
    box-shadow: 0 4px 16px rgba(0, 122, 255, 0.3);
}

.patient-card .patient-name {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 4px;
}

.patient-card .patient-info {
    font-size: 14px;
    opacity: 0.85;
    line-height: 1.5;
}

.patient-card .patient-meta {
    display: flex;
    gap: 16px;
    margin-top: 12px;
    font-size: 13px;
    opacity: 0.8;
}

/* === Stats Grid === */
.stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-bottom: 16px;
}

.stat-card {
    background: var(--card);
    border-radius: var(--radius);
    padding: 16px;
    box-shadow: var(--shadow);
    text-align: center;
}

.stat-value {
    font-size: 28px;
    font-weight: 700;
    line-height: 1.2;
}

.stat-label {
    font-size: 12px;
    color: var(--text-secondary);
    font-weight: 500;
    margin-top: 4px;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.stat-card.blue .stat-value { color: var(--blue); }
.stat-card.red .stat-value { color: var(--red); }
.stat-card.green .stat-value { color: var(--green); }
.stat-card.orange .stat-value { color: var(--orange); }
.stat-card.purple .stat-value { color: var(--purple); }

/* === Section Title === */
.section-title {
    font-size: 20px;
    font-weight: 700;
    margin: 20px 0 10px;
    color: var(--text);
}

.section-subtitle {
    font-size: 13px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
    margin: 20px 0 8px;
    padding-left: 4px;
}

/* === Checklist Items === */
.checklist-item {
    background: var(--card);
    border-radius: var(--radius);
    padding: 14px 16px;
    margin-bottom: 8px;
    display: flex;
    align-items: flex-start;
    gap: 12px;
    box-shadow: var(--shadow);
    cursor: pointer;
    transition: transform 0.15s, box-shadow 0.15s;
    -webkit-tap-highlight-color: transparent;
}

.checklist-item:active {
    transform: scale(0.98);
}

.checklist-check {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: 2px solid var(--separator);
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 1px;
    transition: all 0.2s;
}

.checklist-item.done .checklist-check {
    background: var(--green);
    border-color: var(--green);
}

.checklist-item.done .checklist-check::after {
    content: '';
    width: 6px;
    height: 10px;
    border: 2px solid #fff;
    border-top: none;
    border-left: none;
    transform: rotate(45deg);
    margin-top: -2px;
}

.checklist-item.done .checklist-text {
    color: var(--text-secondary);
    text-decoration: line-through;
}

.checklist-text {
    flex: 1;
}

.checklist-text-title {
    font-size: 15px;
    font-weight: 500;
    line-height: 1.3;
}

.checklist-text-sub {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 2px;
}

.checklist-priority {
    font-size: 11px;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 6px;
    flex-shrink: 0;
    margin-top: 2px;
}

.priority-urgent {
    background: rgba(255, 59, 48, 0.12);
    color: var(--red);
}

.priority-important {
    background: rgba(255, 149, 0, 0.12);
    color: var(--orange);
}

.priority-planned {
    background: rgba(0, 122, 255, 0.12);
    color: var(--blue);
}

.priority-high {
    background: rgba(255, 149, 0, 0.12);
    color: var(--orange);
}

.priority-medium {
    background: rgba(0, 122, 255, 0.12);
    color: var(--blue);
}

/* === Alert Cards === */
.alert-card {
    border-radius: var(--radius);
    padding: 14px 16px;
    margin-bottom: 10px;
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.alert-card.critical {
    background: rgba(255, 59, 48, 0.1);
    border: 1px solid rgba(255, 59, 48, 0.2);
}

.alert-card.warning {
    background: rgba(255, 149, 0, 0.1);
    border: 1px solid rgba(255, 149, 0, 0.2);
}

.alert-card.info {
    background: rgba(0, 122, 255, 0.1);
    border: 1px solid rgba(0, 122, 255, 0.2);
}

.alert-icon {
    font-size: 18px;
    flex-shrink: 0;
    margin-top: 1px;
}

.alert-text {
    flex: 1;
}

.alert-title {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 2px;
}

.alert-card.critical .alert-title { color: var(--red); }
.alert-card.warning .alert-title { color: var(--orange); }
.alert-card.info .alert-title { color: var(--blue); }

.alert-desc {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.4;
}

/* === Error Cards === */
.error-card {
    background: var(--card);
    border-radius: var(--radius);
    padding: 16px;
    margin-bottom: 10px;
    box-shadow: var(--shadow);
    border-left: 4px solid var(--red);
    transition: transform 0.15s;
}

.error-card:active {
    transform: scale(0.98);
}

.error-card.severity-critical { border-left-color: var(--red); }
.error-card.severity-warning { border-left-color: var(--orange); }
.error-card.severity-info { border-left-color: var(--blue); }

.error-card .error-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 6px;
}

.error-card .error-title {
    font-size: 16px;
    font-weight: 600;
    flex: 1;
}

.error-card .error-badge {
    font-size: 11px;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 6px;
    flex-shrink: 0;
    margin-left: 8px;
}

.error-card .error-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.4;
    margin-bottom: 8px;
}

.error-card .error-action {
    font-size: 13px;
    color: var(--blue);
    font-weight: 500;
}

.error-card .error-status {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    font-weight: 500;
    margin-top: 8px;
    padding: 4px 10px;
    border-radius: 8px;
    cursor: pointer;
    border: none;
    -webkit-tap-highlight-color: transparent;
}

.error-status.open {
    background: rgba(255, 59, 48, 0.1);
    color: var(--red);
}

.error-status.resolved {
    background: rgba(52, 199, 89, 0.1);
    color: var(--green);
}

/* === Diagnosis Items === */
.diagnosis-item {
    background: var(--card);
    border-radius: var(--radius);
    padding: 14px 16px;
    margin-bottom: 8px;
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    gap: 12px;
}

.diagnosis-code {
    background: rgba(175, 82, 222, 0.12);
    color: var(--purple);
    font-size: 12px;
    font-weight: 700;
    padding: 4px 10px;
    border-radius: 8px;
    flex-shrink: 0;
    font-family: 'SF Mono', 'Menlo', monospace;
}

.diagnosis-name {
    font-size: 15px;
    font-weight: 500;
    flex: 1;
}

/* === Medication Items === */
.medication-item {
    background: var(--card);
    border-radius: var(--radius);
    padding: 14px 16px;
    margin-bottom: 8px;
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    gap: 12px;
}

.medication-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: rgba(0, 122, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    flex-shrink: 0;
}

.medication-info {
    flex: 1;
}

.medication-name {
    font-size: 15px;
    font-weight: 600;
}

.medication-dose {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 2px;
}

/* === Specialist Items === */
.specialist-item {
    background: var(--card);
    border-radius: var(--radius);
    padding: 14px 16px;
    margin-bottom: 8px;
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    gap: 12px;
}

.specialist-avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--blue), var(--purple));
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 18px;
    font-weight: 600;
    flex-shrink: 0;
}

.specialist-info {
    flex: 1;
}

.specialist-name {
    font-size: 15px;
    font-weight: 600;
}

.specialist-role {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 2px;
}

/* === Timeline Items === */
.timeline-item {
    display: flex;
    gap: 12px;
    margin-bottom: 0;
    padding: 14px 16px;
    background: var(--card);
    position: relative;
}

.timeline-item:first-child {
    border-radius: var(--radius) var(--radius) 0 0;
}

.timeline-item:last-child {
    border-radius: 0 0 var(--radius) var(--radius);
}

.timeline-item:only-child {
    border-radius: var(--radius);
}

.timeline-item:not(:last-child) {
    border-bottom: 0.5px solid var(--separator);
}

.timeline-group {
    box-shadow: var(--shadow);
    border-radius: var(--radius);
    margin-bottom: 12px;
    overflow: hidden;
}

.timeline-date {
    flex-shrink: 0;
    text-align: center;
    min-width: 44px;
}

.timeline-date-day {
    font-size: 22px;
    font-weight: 700;
    line-height: 1.1;
    color: var(--blue);
}

.timeline-date-month {
    font-size: 11px;
    color: var(--text-secondary);
    text-transform: uppercase;
    font-weight: 600;
}

.timeline-content {
    flex: 1;
}

.timeline-title {
    font-size: 15px;
    font-weight: 500;
}

.timeline-category {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 2px;
}

/* === Document List === */
.document-item {
    background: var(--card);
    border-radius: var(--radius);
    padding: 14px 16px;
    margin-bottom: 8px;
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    transition: transform 0.15s;
    -webkit-tap-highlight-color: transparent;
}

.document-item:active {
    transform: scale(0.98);
}

.document-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    flex-shrink: 0;
}

.document-icon.pdf { background: rgba(255, 59, 48, 0.1); color: var(--red); }
.document-icon.image { background: rgba(0, 122, 255, 0.1); color: var(--blue); }
.document-icon.lab { background: rgba(52, 199, 89, 0.1); color: var(--green); }
.document-icon.other { background: rgba(142, 142, 147, 0.1); color: var(--text-secondary); }

.document-icon i {
    font-size: 20px;
}

.document-info {
    flex: 1;
    min-width: 0;
}

.document-name {
    font-size: 15px;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.document-meta {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 2px;
}

/* === Form Inputs (Apple Style) === */
.form-group {
    margin-bottom: 14px;
}

.form-label {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.3px;
    margin-bottom: 6px;
    display: block;
    padding-left: 4px;
}

.form-input, .form-select, .form-textarea {
    width: 100%;
    padding: 12px 16px;
    border: none;
    border-radius: 12px;
    background: var(--bg);
    font-size: 16px;
    font-family: inherit;
    color: var(--text);
    outline: none;
    transition: box-shadow 0.2s;
    -webkit-appearance: none;
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
    box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.2);
}

.form-textarea {
    resize: vertical;
    min-height: 80px;
}

.form-select {
    background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%238E8E93' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 36px;
}

/* === Buttons === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 12px 24px;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: transform 0.15s, opacity 0.15s;
    -webkit-tap-highlight-color: transparent;
    text-decoration: none;
}

.btn:active {
    transform: scale(0.96);
    opacity: 0.8;
}

.btn-primary {
    background: var(--blue);
    color: #fff;
}

.btn-secondary {
    background: rgba(0, 122, 255, 0.1);
    color: var(--blue);
}

.btn-danger {
    background: rgba(255, 59, 48, 0.1);
    color: var(--red);
}

.btn-block {
    width: 100%;
}

.btn-sm {
    padding: 8px 16px;
    font-size: 14px;
    border-radius: 10px;
}

/* === Upload Area === */
.upload-area {
    border: 2px dashed var(--separator);
    border-radius: var(--radius);
    padding: 32px 20px;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.2s, background 0.2s;
    -webkit-tap-highlight-color: transparent;
}

.upload-area:hover, .upload-area.dragover {
    border-color: var(--blue);
    background: rgba(0, 122, 255, 0.04);
}

.upload-area-icon {
    font-size: 36px;
    margin-bottom: 8px;
    display: block;
}

.upload-area-text {
    font-size: 15px;
    color: var(--text-secondary);
    font-weight: 500;
}

.upload-area-hint {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 4px;
    opacity: 0.7;
}

/* === Badges / Tags === */
.badge {
    display: inline-flex;
    align-items: center;
    font-size: 12px;
    font-weight: 600;
    padding: 3px 10px;
    border-radius: 8px;
}

.badge-green { background: rgba(52, 199, 89, 0.12); color: var(--green); }
.badge-orange { background: rgba(255, 149, 0, 0.12); color: var(--orange); }
.badge-blue { background: rgba(0, 122, 255, 0.12); color: var(--blue); }
.badge-red { background: rgba(255, 59, 48, 0.12); color: var(--red); }
.badge-purple { background: rgba(175, 82, 222, 0.12); color: var(--purple); }
.badge-gray { background: rgba(142, 142, 147, 0.12); color: var(--text-secondary); }

/* === Modal / Bottom Sheet === */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 200;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    animation: overlayIn 0.2s ease-out;
}

@keyframes overlayIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-sheet {
    background: var(--card);
    border-radius: 20px 20px 0 0;
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    padding: 0;
    animation: sheetSlideUp 0.35s cubic-bezier(0.32, 0.72, 0, 1);
}

@keyframes sheetSlideUp {
    from { transform: translateY(100%); }
    to { transform: translateY(0); }
}

.modal-handle {
    width: 36px;
    height: 5px;
    background: var(--separator);
    border-radius: 3px;
    margin: 8px auto 0;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px 12px;
    border-bottom: 0.5px solid var(--separator);
}

.modal-title {
    font-size: 17px;
    font-weight: 600;
}

.modal-close {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: var(--bg);
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-secondary);
    font-size: 16px;
    -webkit-tap-highlight-color: transparent;
}

.modal-body {
    padding: 20px;
}

.modal-footer {
    padding: 12px 20px 24px;
    padding-bottom: calc(24px + env(safe-area-inset-bottom, 0px));
}

/* === List Group (iOS Settings Style) === */
.list-group {
    background: var(--card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    margin-bottom: 16px;
    overflow: hidden;
}

.list-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    text-decoration: none;
    color: var(--text);
    cursor: pointer;
    transition: background 0.15s;
    -webkit-tap-highlight-color: transparent;
}

.list-item:not(:last-child) {
    border-bottom: 0.5px solid var(--separator);
}

.list-item:active {
    background: rgba(0, 0, 0, 0.04);
}

.list-item-icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    color: #fff;
    flex-shrink: 0;
}

.list-item-text {
    flex: 1;
    font-size: 16px;
}

.list-item-chevron {
    color: var(--text-secondary);
    opacity: 0.5;
    font-size: 14px;
}

/* === Utility === */
.text-center { text-align: center; }
.text-secondary { color: var(--text-secondary); }
.mt-8 { margin-top: 8px; }
.mt-12 { margin-top: 12px; }
.mt-16 { margin-top: 16px; }
.mt-20 { margin-top: 20px; }
.mb-8 { margin-bottom: 8px; }
.mb-12 { margin-bottom: 12px; }
.mb-16 { margin-bottom: 16px; }

.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-secondary);
}

.empty-state-icon {
    font-size: 48px;
    margin-bottom: 12px;
    display: block;
    opacity: 0.6;
}

.empty-state-text {
    font-size: 15px;
    font-weight: 500;
}

/* === Loading Skeleton === */
.skeleton {
    background: linear-gradient(90deg, var(--bg) 25%, rgba(255,255,255,0.5) 50%, var(--bg) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: 8px;
}

@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.skeleton-card {
    height: 80px;
    border-radius: var(--radius);
    margin-bottom: 12px;
}

.skeleton-patient {
    height: 120px;
    border-radius: var(--radius);
    margin-bottom: 16px;
}

/* === Loading Indicator === */
@keyframes loadingSlide {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

/* === Scrollbar === */
::-webkit-scrollbar {
    width: 0;
    background: transparent;
}