@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

:root {
    /* Default: Light Mode */
    --bg-color: #f1f5f9;
    --paper-bg: #ffffff;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --success: #10b981;
    --danger: #ef4444;
    --border: #e2e8f0;
    --radius: 12px;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

[data-theme="dark"] {
    /* Dark Mode variables */
    --bg-color: #0f172a;
    --paper-bg: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --primary: #3b82f6;
    --primary-hover: #2563eb;
    --success: #10b981;
    --danger: #ef4444;
    --border: #334155;
    --shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -2px rgba(0, 0, 0, 0.25);
}

/* Křivky k šipečce pro Selecty podle módu */
:root {
    --select-arrow: url("data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22292.4%22%20height%3D%22292.4%22%3E%3Cpath%20fill%3D%22%23475569%22%20d%3D%22M287%2069.4a17.6%2017.6%200%200%200-13-5.4H18.4c-5%200-9.3%201.8-12.9%205.4A17.6%2017.6%200%200%200%200%2082.2c0%205%201.8%209.3%205.4%2012.9l128%20127.9c3.6%203.6%207.8%205.4%2012.8%205.4s9.2-1.8%2012.8-5.4L287%2095c3.5-3.5%205.4-7.8%205.4-12.8%200-5-1.9-9.2-5.5-12.8z%22%2F%3E%3C%2Fsvg%3E");
}

[data-theme="dark"] {
    --select-arrow: url("data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22292.4%22%20height%3D%22292.4%22%3E%3Cpath%20fill%3D%22%2394a3b8%22%20d%3D%22M287%2069.4a17.6%2017.6%200%200%200-13-5.4H18.4c-5%200-9.3%201.8-12.9%205.4A17.6%2017.6%200%200%200%200%2082.2c0%205%201.8%209.3%205.4%2012.9l128%20127.9c3.6%203.6%207.8%205.4%2012.8%205.4s9.2-1.8%2012.8-5.4L287%2095c3.5-3.5%205.4-7.8%205.4-12.8%200-5-1.9-9.2-5.5-12.8z%22%2F%3E%3C%2Fsvg%3E");
}

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

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.app-container {
    max-width: 800px;
    margin: 0 auto;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background-color: var(--bg-color);
}

/* Auth View */
.auth-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 24px;
}

.card {
    background: var(--paper-bg);
    border-radius: var(--radius);
    padding: 32px;
    width: 100%;
    max-width: 400px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
}

.card h1 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 8px;
    text-align: center;
}

.card p.subtitle {
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 24px;
    font-size: 0.9rem;
}

.form-group {
    margin-bottom: 16px;
    width: 100%;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 6px;
    color: var(--text-secondary);
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--bg-color);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.btn, a.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.btn {
    width: 100%;
    padding: 14px;
    border-radius: 8px;
    border: none;
    font-family: inherit;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.1s;
}

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

.btn-primary {
    background-color: var(--primary);
    color: white;
}

.btn, a.btn {
    text-decoration: none;
}

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

.alert {
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 16px;
    font-size: 0.875rem;
    display: none;
}

.alert.error {
    background-color: rgba(239, 68, 68, 0.1);
    color: #fca5a5;
    border: 1px solid rgba(239, 68, 68, 0.3);
    display: block;
}

.alert.error:empty {
    display: none !important;
}

/* Zbytek stylů pro hlavní aplikaci */
/* Zbytek stylů pro hlavní aplikaci */
/* Zbytek stylů pro hlavní aplikaci */
.top-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 24px;
    background: var(--paper-bg);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 10;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.top-nav-brand {
    display: flex;
    flex-direction: column;
}

.top-nav-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.top-nav-subtitle {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin: 0 0 0 2px;
}

.top-nav-actions {
    display: flex;
    gap: 12px;
    align-items: center;
    flex-wrap: wrap;
}

.nav-text-btn {
    padding: 10px 18px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: transparent;
    color: var(--text-primary);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-text-btn:hover {
    background: var(--border);
    transform: translateY(-1px);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.nav-text-btn.danger {
    color: var(--danger);
    border-color: rgba(239, 68, 68, 0.3);
}

.nav-text-btn.danger:hover {
    background: var(--danger);
    color: white;
    border-color: var(--danger);
}

.protocol-form {
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 24px;
    max-width: 800px;
    margin: 0 auto;
    width: 100%;
}

.form-section {
    background: var(--paper-bg);
    padding: 24px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.hidden-section {
    display: none !important;
}

.section-lock-note {
    background: rgba(59, 130, 246, 0.08);
    border: 1px solid rgba(59, 130, 246, 0.22);
    color: var(--text-primary);
    padding: 12px 14px;
    border-radius: 12px;
    margin-bottom: 16px;
    font-size: 0.95rem;
    line-height: 1.4;
}

.section-lock-note strong {
    display: block;
    margin-bottom: 6px;
    color: var(--primary);
}

.form-section h2 {
    font-size: 1.125rem;
    color: var(--primary);
    margin-bottom: 16px;
    border-bottom: 1px solid var(--border);
    padding-bottom: 8px;
}

.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

@media (max-width: 650px) {
    .grid-2 {
        grid-template-columns: 1fr;
    }

    .form-section {
        padding: 16px;
    }

    table {
        min-width: 500px;
    }
}

.mb-3 {
    margin-bottom: 16px;
}

.btn-secondary {
    background-color: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
    font-weight: 600;
}

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

.btn-danger {
    background-color: transparent;
    color: var(--danger);
    border: 2px solid var(--danger);
}

.btn-danger:hover {
    background-color: var(--danger);
    color: white;
    border-color: var(--danger);
}

.btn-icon {
    width: 36px;
    height: 36px;
    padding: 0;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    box-shadow: var(--shadow);
}

.btn-sm {
    padding: 8px 12px;
    font-size: 0.875rem;
    width: auto;
    min-width: 88px;
}

.action-button {
    min-width: 88px;
}

.admin-action-cell {
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    gap: 6px;
    align-items: flex-end;
}

.admin-action-group,
.admin-export-group {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

select.form-control {
    appearance: none;
    background-image: var(--select-arrow);
    background-repeat: no-repeat;
    background-position: right 16px top 50%;
    background-size: 12px auto;
}

/* Skrytí šipek (spinners) u číselných políček pro lepší UX na touch screenech */
input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

input[type="number"] {
    -moz-appearance: textfield;
    appearance: textfield;
}

/* Floating Action Button (FAB) */
.fab {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background-color: var(--success);
    color: white;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 2rem;
    box-shadow: 0 4px 10px rgba(16, 185, 129, 0.4);
    cursor: pointer;
    border: none;
    transition: transform 0.2s cubic-bezier(0.18, 0.89, 0.32, 1.28), background-color 0.2s, box-shadow 0.2s;
    z-index: 1000;
}

.fab:hover {
    transform: scale(1.1);
    background-color: #059669;
    /* Darker emerald */
    box-shadow: 0 6px 14px rgba(16, 185, 129, 0.5);
}

.fab:active {
    transform: scale(0.95);
}

/* ============================================================
 * MOBILE OPTIMIZATIONS - Android App-like Feel
 * ============================================================ */

@media (max-width: 768px) {
    /* Safe Area & Viewport */
    html {
        padding-top: max(0px, env(safe-area-inset-top));
        padding-bottom: max(0px, env(safe-area-inset-bottom));
    }

    body {
        font-size: 16px; /* Prevent zoom on iOS */
        padding-bottom: 80px; /* Room for bottom nav if needed */
    }

    /* Typography - Bigger on Mobile */
    h1 {
        font-size: 1.75rem; /* 28px */
    }

    h2 {
        font-size: 1.5rem; /* 24px */
    }

    h3 {
        font-size: 1.25rem; /* 20px */
    }

    p, label, .form-control, input, select, textarea {
        font-size: 16px; /* 1rem = 16px for proper mobile scaling */
    }

    /* Top Navigation */
    .top-nav {
        padding: 16px max(16px, env(safe-area-inset-left)) 16px max(16px, env(safe-area-inset-right));
    }

    .top-nav-title {
        font-size: 1.5rem; /* Bigger title on mobile */
    }

    .top-nav-subtitle {
        font-size: 0.9rem;
    }

    .top-nav-actions {
        gap: 8px;
    }

    .nav-text-btn {
        padding: 12px 16px;
        font-size: 1rem;
        min-height: 44px; /* Touch target */
        display: flex;
        align-items: center;
    }

    /* Forms & Containers */
    .protocol-form {
        padding: 16px;
        gap: 16px;
        max-width: 100%;
    }

    .form-section {
        padding: 20px;
        border-radius: 16px;
    }

    .form-group {
        margin-bottom: 16px;
    }

    label {
        display: block;
        margin-bottom: 8px;
        font-weight: 600;
        font-size: 1rem;
    }

    /* Form Controls - Touch Friendly */
    .form-control, input, select, textarea {
        padding: 14px 16px;
        min-height: 44px; /* Apple/Android touch target */
        border-radius: 10px;
        font-size: 16px; /* Prevent iOS zoom */
        line-height: 1.5;
    }

    input[type="number"] {
        font-size: 16px; /* iOS fix */
    }

    /* Buttons - Bigger Touch Targets */
    .btn {
        padding: 16px 24px;
        min-height: 48px; /* Android Material Design */
        font-size: 1rem;
        border-radius: 10px;
        font-weight: 600;
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        -webkit-tap-highlight-color: transparent; /* Remove tap flash */
    }

    .btn:active {
        transform: scale(0.98); /* Touch feedback */
    }

    .btn-primary, .btn-success, .btn-danger {
        width: 100%;
    }

    .btn-sm {
        padding: 12px 16px;
        min-height: 44px;
        font-size: 0.95rem;
    }

    .btn-icon {
        width: 44px;
        height: 44px;
        font-size: 1.5rem;
    }

    /* Inline Button Groups - Stack on Mobile */
    .inline-buttons {
        display: flex;
        flex-direction: column;
        gap: 12px;
    }

    .inline-buttons .btn {
        width: 100%;
    }

    /* Cards */
    .card {
        max-width: 100%;
        padding: 16px;
        border-radius: 16px;
        margin-bottom: 12px;
    }

    .card-title {
        font-size: 1.15rem;
    }

    /* Photos & Media - Responsive Grid */
    .photo-grid,
    .signature-grid {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
        gap: 12px;
        margin: 16px 0;
    }

    .photo-item,
    .signature-item {
        aspect-ratio: 1;
        border-radius: 12px;
        overflow: hidden;
    }

    .photo-item img,
    .signature-item img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }

    .photo-item button,
    .signature-item button {
        padding: 6px;
        font-size: 0.8rem;
        min-height: auto;
    }

    /* Protocol Status & Info Boxes */
    .section-lock-note,
    .info-box,
    .status-box {
        padding: 14px 16px;
        margin-bottom: 12px;
        font-size: 0.95rem;
        border-radius: 12px;
    }

    .section-lock-note {
        margin-bottom: 16px;
    }

    .section-lock-note strong {
        font-size: 1rem;
    }

    /* Admin Table Responsive */
    .admin-table {
        font-size: 0.9rem;
        display: block;
        overflow-x: auto;
        overflow-y: hidden;
        -webkit-overflow-scrolling: touch; /* Smooth scroll on iOS */
    }

    .admin-table table {
        width: 100%;
        min-width: 100%;
    }

    .admin-table td, .admin-table th {
        padding: 12px 8px;
        word-break: break-word;
    }

    .admin-table tbody tr {
        border-bottom: 1px solid var(--border);
    }

    .admin-action-cell,
    .admin-action-group {
        gap: 8px;
    }

    .admin-action-group .btn {
        width: auto;
        padding: 10px 14px;
        min-height: 44px;
        font-size: 0.85rem;
    }

    /* Checkbox labels - Touch friendly */
    .checkbox-label {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 8px;
        cursor: pointer;
        border-radius: 8px;
        font-size: 0.95rem;
        user-select: none;
        -webkit-user-select: none;
    }

    .checkbox-label input[type="checkbox"] {
        width: 20px;
        height: 20px;
        cursor: pointer;
        accent-color: var(--primary);
    }

    .checkbox-label:active {
        background: rgba(37, 99, 235, 0.1);
    }

    /* Preview container for photos */
    .preview-container {
        display: grid !important;
        grid-template-columns: repeat(auto-fill, minmax(100px, 1fr)) !important;
        gap: 12px !important;
    }

    /* Strikethrough styles */
    .strikethrough {
        text-decoration: line-through;
        opacity: 0.6;
    }

    /* Touch Feedback & Focus States */
    .btn:focus-visible,
    .form-control:focus-visible,
    input:focus-visible,
    select:focus-visible,
    textarea:focus-visible {
        outline: 3px solid var(--primary);
        outline-offset: 2px;
    }

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

    .form-control:focus,
    input:focus,
    select:focus,
    textarea:focus {
        border-color: var(--primary);
        box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
    }

    /* Prevent tap highlight on mobile */
    button, .btn, a, input, select, textarea {
        -webkit-tap-highlight-color: transparent;
    }

    /* Better text selection on mobile */
    input, textarea, select {
        -webkit-user-select: text;
        user-select: text;
    }

    /* Reduce font size on inputs to prevent iOS zoom */
    .form-control, input, select, textarea {
        font-family: inherit;
        font-size: 16px !important;
    }

    /* Disabled state */
    button:disabled, .btn:disabled,
    input:disabled, select:disabled, textarea:disabled {
        opacity: 0.5;
        cursor: not-allowed;
    }

    /* Link styling */
    a {
        color: var(--primary);
        text-decoration: none;
        transition: color 0.2s;
    }

    a:hover {
        text-decoration: underline;
    }

    a:active {
        opacity: 0.8;
    }

    /* Signature Canvas */
    #signatureCanvas,
    .signature-canvas {
        max-width: 100%;
        height: auto;
        aspect-ratio: 16/9;
        border-radius: 12px;
    }

    /* Modal/Dialog (if used) */
    .modal-content, .dialog {
        max-width: 95%;
        max-height: 90vh;
        border-radius: 16px;
        padding: 20px;
    }

    /* Floating Action Button */
    .fab {
        bottom: 80px; /* Above potential bottom nav */
        right: 16px;
        width: 56px;
        height: 56px;
        font-size: 1.75rem;
        border-radius: 50%;
        -webkit-tap-highlight-color: transparent;
    }

    .fab:active {
        transform: scale(0.95);
    }

    /* Continue/Next Buttons - Prominent on Mobile */
    .continue-btn,
    .next-btn,
    .submit-btn {
        width: 100%;
        padding: 16px 24px;
        min-height: 48px;
        font-size: 1.1rem;
        margin-top: 16px;
    }

    /* Tabs/Navigation - Touch Friendly */
    .tab-button,
    .nav-item {
        padding: 14px 16px;
        min-height: 44px;
        font-size: 0.95rem;
        border-radius: 10px;
    }

    .tab-button.active {
        font-weight: 700;
    }

    /* Success Message */
    .success-section {
        padding: 20px;
        border-radius: 16px;
    }

    .success-message {
        font-size: 1.1rem;
        margin-bottom: 16px;
    }

    /* Password/Auth Inputs */
    .auth-wrapper {
        max-width: 100%;
        padding: 20px;
    }

    .auth-form {
        display: flex;
        flex-direction: column;
        gap: 16px;
    }

    .auth-form .form-control {
        min-height: 48px;
        font-size: 16px;
    }

    .auth-form .btn {
        min-height: 48px;
        width: 100%;
        font-size: 1rem;
    }

    /* 2FA Input - Large Numbers */
    .twofa-input input[type="text"] {
        font-size: 1.5rem;
        letter-spacing: 8px;
        text-align: center;
        padding: 16px;
        min-height: 48px;
    }
}

/* Extra Small Phones (< 375px) */
@media (max-width: 375px) {
    .top-nav-title {
        font-size: 1.25rem;
    }

    .form-section {
        padding: 16px;
    }

    .btn {
        padding: 14px 20px;
    }

    .photo-grid,
    .signature-grid {
        grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
        gap: 10px;
    }

    .protocol-form {
        padding: 12px;
        gap: 12px;
    }

    .inline-buttons {
        gap: 10px;
    }
}

/* Mobile Overrides for Inline Styles - Force Full Width on Mobile */
@media (max-width: 768px) {
    /* Override inline style="width:auto" on buttons */
    button[style*="width:auto"],
    .btn[style*="width:auto"] {
        width: 100% !important;
        min-height: 44px !important;
    }

    /* Admin action buttons - stack on mobile */
    .admin-action-cell {
        align-items: stretch !important;
    }

    .admin-action-group,
    .admin-export-group {
        display: flex !important;
        flex-direction: column !important;
        width: 100% !important;
        gap: 10px !important;
        align-items: stretch !important;
    }

    .admin-action-group button[style*="width:auto"],
    .admin-action-group .btn,
    .admin-export-group .btn {
        width: 100% !important;
        display: block !important;
        font-size: 1rem !important;
        padding: 14px 16px !important;
        min-height: 48px !important;
    }

    .admin-action-group .btn-sm,
    .admin-export-group .btn-sm {
        padding: 14px 16px !important;
        min-height: 48px !important;
    }

    .admin-table td,
    .admin-table th {
        font-size: 1rem !important;
        line-height: 1.4;
    }

    /* Pagination buttons - slightly wider */
    button[style*="padding:6px 16px"],
    button[style*="padding: 6px 16px"] {
        padding: 12px 16px !important;
        min-height: 44px !important;
        font-size: 0.95rem !important;
    }

    /* Override flex layouts for buttons */
    div[style*="display:flex; gap:10px"],
    div[style*="display: flex; gap: 10px"] {
        flex-direction: column !important;
    }

    /* Photo input label button */
    label.btn[style*="width:100%"] {
        padding: 16px 24px !important;
        min-height: 48px !important;
        font-size: 1rem !important;
    }

    /* Canvas containers */
    canvas[style*="height: 150px"],
    canvas[style*="height:150px"] {
        max-width: 100% !important;
    }

    /* Dictation button */
    button[style*="width: 50px"] {
        width: 48px !important;
        height: 48px !important;
        min-height: 48px !important;
        padding: 0 !important;
    }

    /* Continue/Next buttons */
    button[style*="width:100%"] {
        width: 100% !important;
        min-height: 48px !important;
        padding: 16px 24px !important;
        font-size: 1.05rem !important;
    }
}

/* Extra Small Phones - Even smaller inline styles */
@media (max-width: 375px) {
    button[style*="width:auto"],
    .btn[style*="width:auto"] {
        padding: 12px 16px !important;
        font-size: 0.9rem !important;
    }

    button[style*="width: 50px"] {
        width: 44px !important;
        height: 44px !important;
    }
}

/* Large Tablets (> 900px) - Revert some Mobile Changes */
@media (min-width: 900px) {
    body {
        padding-bottom: 0;
    }

    .fab {
        bottom: 30px;
    }

    .btn-primary, .btn-success, .btn-danger {
        width: auto;
    }

    .inline-buttons {
        flex-direction: row;
        flex-wrap: wrap;
    }

    .inline-buttons .btn {
        width: auto;
        min-width: 120px;
    }

    .modal-content, .dialog {
        max-width: 600px;
    }

    /* Remove mobile overrides on desktop */
    button[style*="width:auto"],
    .btn[style*="width:auto"] {
        width: auto !important;
        min-height: auto !important;
    }

    button[style*="padding:6px 16px"],
    button[style*="padding: 6px 16px"] {
        padding: 6px 16px !important;
        min-height: auto !important;
    }
}