/* =============================================
   Blood Pressure Tracker - Mobile-First Design
   ============================================= */

:root {
    --bp-primary: #e63946;
    --bp-primary-dark: #c1121f;
    --bp-primary-light: #fce4e6;
    --bp-success: #2a9d8f;
    --bp-warning: #e9c46a;
    --bp-danger: #e63946;
    --bp-info: #457b9d;
    --bp-dark: #1d3557;
    --bp-light: #f8f9fa;
    --bp-bg: #f0f2f5;
    --bp-card-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
    --bp-card-radius: 16px;
    --bp-nav-height: 68px;
}

* {
    -webkit-tap-highlight-color: transparent;
}

html, body {
    height: 100%;
    background-color: var(--bp-bg);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    overscroll-behavior-y: contain;
}

body {
    padding-bottom: 0;
}

h1:focus {
    outline: none;
}

/* ============ App Container ============ */

.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100dvh;
}

.app-main {
    flex: 1;
    padding-bottom: calc(var(--bp-nav-height) + 16px);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

/* ============ Bottom Navigation ============ */

.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: var(--bp-nav-height);
    background: #ffffff;
    display: flex;
    justify-content: space-around;
    align-items: center;
    box-shadow: 0 -2px 16px rgba(0, 0, 0, 0.08);
    z-index: 1000;
    padding-bottom: env(safe-area-inset-bottom, 0px);
    border-top: 1px solid rgba(0,0,0,0.04);
}

.bottom-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    padding: 6px 12px;
    color: #999;
    text-decoration: none;
    font-size: 0.68rem;
    font-weight: 500;
    transition: all 0.2s ease;
    border-radius: 12px;
    min-width: 60px;
}

.bottom-nav-item i {
    font-size: 1.35rem;
    transition: transform 0.2s ease;
}

.bottom-nav-item:hover,
.bottom-nav-item:focus {
    color: var(--bp-primary);
    text-decoration: none;
}

.bottom-nav-item.active {
    color: var(--bp-primary);
    background: var(--bp-primary-light);
}

.bottom-nav-item.active i {
    transform: scale(1.1);
}

/* ============ Page Header ============ */

.page-header {
    background: linear-gradient(135deg, var(--bp-primary) 0%, var(--bp-primary-dark) 100%);
    color: white;
    padding: 24px 20px 32px;
    margin-bottom: -16px;
    position: relative;
}

.page-header h1 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.page-header p {
    opacity: 0.85;
    font-size: 0.9rem;
    margin-bottom: 0;
}

/* ============ Cards ============ */

.bp-card {
    background: white;
    border-radius: var(--bp-card-radius);
    box-shadow: var(--bp-card-shadow);
    padding: 20px;
    margin-bottom: 16px;
    border: none;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

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

.bp-card-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
    font-weight: 600;
    font-size: 1rem;
    color: var(--bp-dark);
}

.bp-card-header i {
    font-size: 1.2rem;
    color: var(--bp-primary);
}

/* ============ Content Container ============ */

.content-container {
    padding: 0 16px;
    position: relative;
    z-index: 1;
}

/* ============ Stat Cards ============ */

.stat-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-bottom: 16px;
}

.stat-card {
    background: white;
    border-radius: 14px;
    padding: 14px 12px;
    text-align: center;
    box-shadow: var(--bp-card-shadow);
}

.stat-card .stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    line-height: 1.2;
}

.stat-card .stat-label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: #888;
    margin-top: 4px;
}

.stat-systolic .stat-value { color: var(--bp-danger); }
.stat-diastolic .stat-value { color: var(--bp-info); }
.stat-pulse .stat-value { color: var(--bp-success); }

/* ============ Reading Item ============ */

.reading-item {
    display: flex;
    align-items: center;
    padding: 14px 0;
    border-bottom: 1px solid rgba(0,0,0,0.05);
    gap: 14px;
}

.reading-item:last-child {
    border-bottom: none;
}

.reading-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.reading-icon.normal {
    background: #d4edda;
    color: #155724;
}

.reading-icon.elevated {
    background: #fff3cd;
    color: #856404;
}

.reading-icon.high {
    background: #f8d7da;
    color: #721c24;
}

.reading-body {
    flex: 1;
    min-width: 0;
}

.reading-values {
    font-weight: 600;
    font-size: 1rem;
    color: var(--bp-dark);
}

.reading-meta {
    font-size: 0.78rem;
    color: #888;
    margin-top: 2px;
}

.reading-delete {
    background: none;
    border: none;
    color: #ccc;
    font-size: 1.2rem;
    padding: 8px;
    cursor: pointer;
    transition: color 0.2s;
}

.reading-delete:hover {
    color: var(--bp-danger);
}

/* ============ Forms ============ */

.bp-form .form-control,
.bp-form .form-select {
    border-radius: 12px;
    padding: 14px 16px;
    font-size: 1rem;
    border: 2px solid #e9ecef;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    background: #fafafa;
}

.bp-form .form-control:focus,
.bp-form .form-select:focus {
    border-color: var(--bp-primary);
    box-shadow: 0 0 0 3px var(--bp-primary-light);
    background: white;
}

.bp-form .form-label {
    font-weight: 600;
    font-size: 0.85rem;
    color: #555;
    margin-bottom: 6px;
}

.bp-form .input-group-text {
    border-radius: 0 12px 12px 0;
    background: #f0f2f5;
    border: 2px solid #e9ecef;
    border-left: none;
    font-size: 0.85rem;
    color: #666;
}

.bp-form .input-group .form-control {
    border-radius: 12px 0 0 12px;
}

/* ============ DateTime Picker ============ */

.datetime-picker-group {
    display: flex;
    gap: 8px;
}

.datetime-picker-field {
    flex: 1;
    position: relative;
}

.datetime-picker-field i {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: #888;
    font-size: 1rem;
    pointer-events: none;
    z-index: 1;
}

.datetime-picker-field .form-control {
    padding-left: 40px;
}

/* ============ Buttons ============ */

.btn-bp-primary {
    background: linear-gradient(135deg, var(--bp-primary) 0%, var(--bp-primary-dark) 100%);
    color: white;
    border: none;
    border-radius: 14px;
    padding: 14px 24px;
    font-size: 1rem;
    font-weight: 600;
    width: 100%;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
    box-shadow: 0 4px 14px rgba(230, 57, 70, 0.3);
}

.btn-bp-primary:hover,
.btn-bp-primary:focus {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(230, 57, 70, 0.4);
    color: white;
}

.btn-bp-primary:active {
    transform: translateY(0);
}

.btn-bp-secondary {
    background: white;
    color: var(--bp-dark);
    border: 2px solid #e9ecef;
    border-radius: 14px;
    padding: 12px 24px;
    font-size: 0.95rem;
    font-weight: 600;
    width: 100%;
    transition: all 0.15s ease;
}

.btn-bp-secondary:hover {
    background: #f8f9fa;
    border-color: var(--bp-primary);
    color: var(--bp-primary);
}

/* ============ Chart Container ============ */

.chart-container {
    position: relative;
    height: 260px;
    width: 100%;
}

/* ============ Reminder Item ============ */

.reminder-item {
    display: flex;
    align-items: center;
    padding: 16px;
    background: white;
    border-radius: var(--bp-card-radius);
    box-shadow: var(--bp-card-shadow);
    margin-bottom: 12px;
    gap: 14px;
}

.reminder-time {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--bp-dark);
    min-width: 70px;
}

.reminder-info {
    flex: 1;
}

.reminder-label {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--bp-dark);
}

.reminder-days {
    font-size: 0.75rem;
    color: #888;
    margin-top: 2px;
}

.reminder-toggle .form-check-input {
    width: 48px;
    height: 26px;
    cursor: pointer;
}

.reminder-toggle .form-check-input:checked {
    background-color: var(--bp-primary);
    border-color: var(--bp-primary);
}

.reminder-actions {
    display: flex;
    gap: 4px;
}

/* ============ Day Selector ============ */

.day-selector {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.day-chip {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    border: 2px solid #e9ecef;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s ease;
    background: white;
    color: #666;
}

.day-chip.active {
    background: var(--bp-primary);
    color: white;
    border-color: var(--bp-primary);
}

/* ============ Empty State ============ */

.empty-state {
    text-align: center;
    padding: 48px 24px;
    color: #999;
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 16px;
    opacity: 0.4;
}

.empty-state p {
    font-size: 0.95rem;
}

/* ============ Blood Pressure Classification ============ */

.bp-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 0.72rem;
    font-weight: 600;
}

.bp-badge.normal {
    background: #d4edda;
    color: #155724;
}

.bp-badge.elevated {
    background: #fff3cd;
    color: #856404;
}

.bp-badge.high {
    background: #f8d7da;
    color: #721c24;
}

/* ============ Toast / Success Animation ============ */

.success-toast {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bp-success);
    color: white;
    padding: 12px 24px;
    border-radius: 12px;
    font-weight: 600;
    z-index: 2000;
    box-shadow: 0 4px 20px rgba(42, 157, 143, 0.4);
    animation: slideDown 0.3s ease, fadeOut 0.3s ease 2.5s;
}

@keyframes slideDown {
    from { transform: translateX(-50%) translateY(-20px); opacity: 0; }
    to { transform: translateX(-50%) translateY(0); opacity: 1; }
}

@keyframes fadeOut {
    to { opacity: 0; }
}

/* ============ Period Selector ============ */

.period-selector {
    display: flex;
    background: #f0f2f5;
    border-radius: 12px;
    padding: 4px;
    margin-bottom: 16px;
}

.period-btn {
    flex: 1;
    text-align: center;
    padding: 8px 12px;
    border: none;
    background: none;
    border-radius: 10px;
    font-size: 0.85rem;
    font-weight: 600;
    color: #888;
    cursor: pointer;
    transition: all 0.2s ease;
}

.period-btn.active {
    background: white;
    color: var(--bp-dark);
    box-shadow: 0 1px 4px rgba(0,0,0,0.1);
}

/* ============ Validation ============ */

.valid.modified:not([type=checkbox]) {
    outline: none;
    border-color: var(--bp-success) !important;
}

.invalid {
    outline: none;
    border-color: var(--bp-danger) !important;
}

.validation-message {
    color: var(--bp-danger);
    font-size: 0.8rem;
    margin-top: 4px;
}

/* ============ Error Boundary ============ */

.blazor-error-boundary {
    background: url(data:image/svg+xml;base64,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) no-repeat 1rem/1.8rem, #b32121;
    padding: 1rem 1rem 1rem 3.7rem;
    color: white;
}

.blazor-error-boundary::after {
    content: "An error has occurred."
}

/* ============ Form Helpers ============ */

.darker-border-checkbox.form-check-input {
    border-color: #929292;
}

.form-floating > .form-control-plaintext::placeholder, .form-floating > .form-control::placeholder {
    color: var(--bs-secondary-color);
    text-align: end;
}

.form-floating > .form-control-plaintext:focus::placeholder, .form-floating > .form-control:focus::placeholder {
    text-align: start;
}

/* ============ Loading Spinner ============ */

.loading-spinner {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 40px;
}

.loading-spinner::after {
    content: '';
    width: 36px;
    height: 36px;
    border: 3px solid #eee;
    border-top-color: var(--bp-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ============ Account Pages ============ */

.account-container {
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 24px 16px;
    background: var(--bp-bg);
}

.account-card {
    background: white;
    border-radius: var(--bp-card-radius);
    box-shadow: var(--bp-card-shadow);
    padding: 32px 24px;
    width: 100%;
    max-width: 400px;
}

.account-logo {
    text-align: center;
    margin-bottom: 24px;
}

.account-logo i {
    font-size: 2.5rem;
    color: var(--bp-primary);
}

.account-logo h2 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--bp-dark);
    margin-top: 8px;
}

.account-card h1 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--bp-dark);
    margin-bottom: 4px;
}

.account-card h2 {
    font-size: 0.95rem;
    color: #888;
    font-weight: 400;
    margin-bottom: 16px;
}

.account-card hr {
    border-color: rgba(0, 0, 0, 0.06);
    margin: 16px 0;
}

.account-card .form-floating > .form-control {
    border-radius: 12px;
    border: 2px solid #e9ecef;
    font-size: 1rem;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.account-card .form-floating > .form-control:focus {
    border-color: var(--bp-primary);
    box-shadow: 0 0 0 3px var(--bp-primary-light);
}

.account-card .btn-primary {
    background: linear-gradient(135deg, var(--bp-primary) 0%, var(--bp-primary-dark) 100%);
    border: none;
    border-radius: 14px;
    padding: 14px 24px;
    font-size: 1rem;
    font-weight: 600;
    box-shadow: 0 4px 14px rgba(230, 57, 70, 0.3);
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.account-card .btn-primary:hover,
.account-card .btn-primary:focus {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(230, 57, 70, 0.4);
    background: linear-gradient(135deg, var(--bp-primary) 0%, var(--bp-primary-dark) 100%);
}

.account-card .btn-primary:active {
    transform: translateY(0);
}

.account-card a {
    color: var(--bp-primary);
    font-weight: 500;
    text-decoration: none;
    transition: color 0.2s ease;
}

.account-card a:hover {
    color: var(--bp-primary-dark);
    text-decoration: underline;
}

.account-card .text-danger {
    color: var(--bp-danger) !important;
    font-size: 0.85rem;
}

.account-card .form-check-input:checked {
    background-color: var(--bp-primary);
    border-color: var(--bp-primary);
}

.account-card .alert-info {
    background: var(--bp-primary-light);
    border: none;
    border-radius: 12px;
    color: var(--bp-dark);
    font-size: 0.9rem;
}

.account-links {
    display: flex;
    flex-direction: column;
    gap: 8px;
    font-size: 0.9rem;
}

.account-divider {
    display: flex;
    align-items: center;
    gap: 12px;
    color: #aaa;
    font-size: 0.85rem;
    margin: 8px 0;
}

.account-divider::before,
.account-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: #e9ecef;
}

.account-status-page {
    text-align: center;
    padding: 16px 0;
}

.account-status-page i {
    font-size: 3rem;
    margin-bottom: 16px;
    display: block;
}

.account-status-page h1 {
    margin-bottom: 12px;
}

.account-status-page p {
    color: #666;
    font-size: 0.95rem;
    margin-bottom: 16px;
}