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

html {
    width: 100%;
    overflow-x: hidden;
    /* Prevent horizontal scroll on iOS */
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: #f5f5f5;
    min-height: 100vh;
    min-height: -webkit-fill-available; /* iOS Safari fix */
    color: #333;
    width: 100%;
    max-width: 100vw;
    overflow-x: hidden;
    /* Prevent text selection zoom on iOS */
    -webkit-tap-highlight-color: transparent;
    /* Prevent font size adjustment on iOS */
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
}

/* Toolbar */
.toolbar {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.toolbar-left {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.toolbar-left h1 {
    font-size: 1.5em;
    font-weight: 600;
    margin: 0;
}

.api-status {
    font-size: 0.75em;
    opacity: 0.9;
}

.toolbar-right {
    display: flex;
    gap: 10px;
    align-items: center;
}

.toolbar-btn {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: none;
    border-radius: 8px;
    padding: 10px 15px;
    font-size: 1.2em;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    height: 44px;
}

.toolbar-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

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

.container {
    width: 100%;
    max-width: 100vw;
    overflow-x: hidden;
    background: white;
    min-height: calc(100vh - 70px);
    min-height: calc(100vh - 70px - env(safe-area-inset-bottom)); /* iOS safe area */
}

.search-section {
    padding: 20px;
    background: #f8f9fa;
    border-bottom: 1px solid #e0e0e0;
}

.search-container {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

#searchInput {
    flex: 1;
    min-width: 0; /* Allow flexbox to shrink */
    padding: 15px 20px;
    font-size: 16px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    transition: border-color 0.3s;
    /* Prevent iOS zoom on input focus */
    font-size: 16px; /* iOS won't zoom if font-size >= 16px */
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
}

#searchInput:focus {
    outline: none;
    border-color: #667eea;
}

.scan-btn {
    padding: 15px 25px;
    background: #667eea;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    cursor: pointer;
    transition: background 0.3s;
    white-space: nowrap;
}

.scan-btn:hover {
    background: #5568d3;
}

.camera-container {
    margin-top: 20px;
    text-align: center;
}

.camera-container.hidden {
    display: none;
}

.video-wrapper {
    position: relative;
    display: inline-block;
    max-width: 500px;
    min-height: 250px;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
}

/*#video {
    width: 100%;
    max-width: 500px;
    border-radius: 8px;
    background: #000;
    display: block;
    margin: 0 auto;
    object-fit: cover;
}*/
#video {
    width: 100%;
    max-width: 640px;
    /* Optimal barcode scanning: wide but not too tall */
    height: 240px; /* Fixed height for consistency */
    max-height: 50vh; /* But don't exceed half viewport height */
    border-radius: 8px;
    background: #000;
    display: block;
    margin: 0 auto;
    object-fit: cover; /* Crop to fit */
}

/* Crosshair overlay */
.crosshair {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 200px;
    height: 200px;
    pointer-events: none;
    z-index: 10;
}

.crosshair-line {
    position: absolute;
    background: #ff0000;
    box-shadow: 0 0 3px rgba(255, 0, 0, 0.8);
}

.crosshair-horizontal {
    top: 50%;
    left: 0;
    width: 100%;
    height: 2px;
    transform: translateY(-50%);
    animation: crosshair-float 2s ease-in-out infinite;
}

@keyframes crosshair-float {
    0%, 100% {
        top: 60%;
    }
    50% {
        top: 40%;
    }
}

.crosshair-vertical {
    left: 50%;
    top: 0;
    width: 2px;
    height: 100%;
    transform: translateX(-50%);
}

.crosshair-corner {
    position: absolute;
    width: 30px;
    height: 30px;
    border: 3px solid #ff0000;
    box-shadow: 0 0 3px rgba(255, 0, 0, 0.8);
}

.crosshair-top-left {
    top: 0;
    left: 0;
    border-right: none;
    border-bottom: none;
}

.crosshair-top-right {
    top: 0;
    right: 0;
    border-left: none;
    border-bottom: none;
}

.crosshair-bottom-left {
    bottom: 0;
    left: 0;
    border-right: none;
    border-top: none;
}

.crosshair-bottom-right {
    bottom: 0;
    right: 0;
    border-left: none;
    border-top: none;
}

.camera-error {
    background: #ffebee;
    color: #c62828;
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 15px;
    border: 1px solid #ef5350;
}

.camera-error.hidden {
    display: none;
}

.camera-controls {
    margin-top: 15px;
}

/* Result Area */
.result-area {
    padding: 20px;
    min-height: 300px;
}

.welcome-message {
    text-align: center;
    color: #666;
    font-size: 1.1em;
}

.welcome-message p {
    margin: 0;
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s;
    font-weight: 500;
}

.btn-primary {
    background: #667eea;
    color: white;
}

.btn-primary:hover {
    background: #5568d3;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    background: #6c757d;
    color: white;
}

.btn-secondary:hover {
    background: #5a6268;
}

.btn-danger {
    background: #dc3545;
    color: white;
}

.btn-danger:hover {
    background: #c82333;
}

.btn-edit {
    background: #28a745;
    color: white;
}

.btn-edit:hover {
    background: #218838;
}

.articles-list {
    padding: 30px;
}

.article-card {
    background: #f8f9fa;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 15px;
    transition: all 0.3s;
}

.article-card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transform: translateY(-2px);
}

.article-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 15px;
}

.article-title {
    font-size: 1.3em;
    font-weight: 600;
    color: #333;
    margin-bottom: 5px;
}

.article-ean {
    color: #666;
    font-size: 0.9em;
    font-family: monospace;
}

.article-description {
    color: #555;
    margin: 10px 0;
    line-height: 1.5;
}

.article-details {
    display: flex;
    gap: 20px;
    margin-top: 15px;
    flex-wrap: wrap;
}

.detail-item {
    display: flex;
    flex-direction: column;
}

.detail-label {
    font-size: 0.85em;
    color: #666;
    margin-bottom: 5px;
}

.detail-value {
    font-size: 1.1em;
    font-weight: 600;
    color: #333;
}

.article-actions {
    display: flex;
    gap: 10px;
    margin-top: 15px;
}

.article-actions .btn {
    padding: 8px 16px;
    font-size: 14px;
}

.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal.hidden {
    display: none;
}

.modal-content {
    background: white;
    border-radius: 12px;
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid #e0e0e0;
}

.modal-header h2 {
    font-size: 1.5em;
    color: #333;
}

.close-btn {
    background: none;
    border: none;
    font-size: 2em;
    color: #666;
    cursor: pointer;
    line-height: 1;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.close-btn:hover {
    color: #333;
}

form {
    padding: 20px;
}

.form-group {
    margin-bottom: 20px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #333;
}

input[type="text"],
input[type="number"],
textarea {
    width: 100%;
    max-width: 100%;
    padding: 12px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 16px; /* Prevent iOS zoom on focus */
    font-family: inherit;
    transition: border-color 0.3s;
    box-sizing: border-box;
    /* Prevent iOS input styling */
    -webkit-appearance: none;
    appearance: none;
}

input:focus,
textarea:focus {
    outline: none;
    border-color: #667eea;
}

textarea {
    resize: vertical;
}

.form-actions {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    margin-top: 30px;
}

.hidden {
    display: none !important;
}

.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: #666;
}

.empty-state h3 {
    font-size: 1.5em;
    margin-bottom: 10px;
}

/* Article Display (when found) */
.article-display {
    padding: 20px;
}

.article-card-large {
    background: #f8f9fa;
    border: 2px solid #667eea;
    border-radius: 12px;
    padding: 20px;
    max-width: 800px;
    margin: 0 auto;
}

.article-header-large {
    margin-bottom: 20px;
}

.article-header-large h2 {
    font-size: 2em;
    font-weight: 600;
    color: #333;
    margin-bottom: 10px;
}

.article-ean-large {
    color: #666;
    font-size: 1.1em;
    font-family: monospace;
    font-weight: 500;
}

.article-description-large {
    color: #555;
    margin: 20px 0;
    line-height: 1.6;
    font-size: 1.05em;
}

.article-details-large {
    display: flex;
    gap: 40px;
    margin: 30px 0;
    padding: 20px;
    background: white;
    border-radius: 8px;
}

.detail-item-large {
    display: flex;
    flex-direction: column;
}

.detail-value-large {
    font-size: 2em;
    font-weight: 700;
    color: #667eea;
    margin-top: 5px;
}

/* Quantity Controls */
.quantity-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    margin: 30px 0;
    padding: 20px;
    background: white;
    border-radius: 8px;
}

.btn-quantity {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    font-size: 2em;
    font-weight: bold;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    border: 2px solid;
    transition: all 0.2s;
}

.btn-plus {
    background: #28a745;
    color: white;
    border-color: #28a745;
}

.btn-plus:hover {
    background: #218838;
    border-color: #218838;
    transform: scale(1.1);
}

.btn-minus {
    background: #dc3545;
    color: white;
    border-color: #dc3545;
}

.btn-minus:hover {
    background: #c82333;
    border-color: #c82333;
    transform: scale(1.1);
}

.quantity-change-indicator {
    font-size: 2em;
    font-weight: bold;
    min-width: 80px;
    text-align: center;
    padding: 10px 20px;
    background: #f8f9fa;
    border-radius: 8px;
}

#applyQuantityBtn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.article-actions-large {
    margin-top: 30px;
    text-align: center;
}

.article-actions-large .btn {
    padding: 15px 30px;
    font-size: 1.1em;
}

/* Add Article Form (when not found) */
.add-article-form {
    padding: 20px;
}

.form-card {
    background: #f8f9fa;
    border: 2px dashed #667eea;
    border-radius: 12px;
    padding: 20px;
    max-width: 700px;
    margin: 0 auto;
}

.form-card h2 {
    font-size: 1.8em;
    color: #333;
    margin-bottom: 10px;
}

.form-subtitle {
    color: #666;
    margin-bottom: 25px;
    font-size: 1.1em;
}

.form-subtitle strong {
    color: #667eea;
    font-family: monospace;
    font-size: 1.2em;
}

/* Login Modal Styles */
.login-modal-content {
    max-width: 400px;
}

.login-error {
    background: #ffebee;
    color: #c62828;
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 15px;
    border: 1px solid #ef5350;
    font-size: 0.9em;
}

.login-error.hidden {
    display: none;
}

/* iOS and Mobile Specific Fixes */
@media (max-width: 768px) {
    /* Prevent horizontal scroll on mobile */
    html, body {
        position: relative;
        overflow-x: hidden;
        width: 100%;
        max-width: 100vw;
    }
    
    /* iOS safe area support for toolbar */
    .toolbar {
        padding: 12px 15px;
        padding-top: max(12px, env(safe-area-inset-top));
    }
    
    .toolbar-left h1 {
        font-size: 1.2em;
        word-wrap: break-word;
        overflow-wrap: break-word;
    }
    
    .toolbar-btn {
        padding: 8px 12px;
        font-size: 1.1em;
        min-width: 40px;
        height: 40px;
    }
    
    .search-section {
        padding: 15px;
        padding-left: max(15px, env(safe-area-inset-left));
        padding-right: max(15px, env(safe-area-inset-right));
    }
    
    .result-area,
    .article-display,
    .add-article-form {
        padding: 15px;
        padding-left: max(15px, env(safe-area-inset-left));
        padding-right: max(15px, env(safe-area-inset-right));
        padding-bottom: max(15px, env(safe-area-inset-bottom));
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .article-header {
        flex-direction: column;
        gap: 15px;
    }

    .article-actions {
        flex-direction: column;
    }

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

    .search-container {
        flex-wrap: wrap;
        width: 100%;
        max-width: 100%;
    }

    #searchInput {
        width: 100%;
        max-width: 100%;
        min-width: 0; /* Allow flex shrink */
    }

    .search-container button {
        flex: 1;
        min-width: 100px;
        max-width: 100%;
    }

    .article-card-large {
        padding: 20px;
        max-width: 100%;
        box-sizing: border-box;
    }

    .article-header-large h2 {
        font-size: 1.5em;
        word-wrap: break-word;
        overflow-wrap: break-word;
    }

    .article-details-large {
        flex-direction: column;
        gap: 20px;
    }

    .quantity-controls {
        flex-wrap: wrap;
        gap: 15px;
        width: 100%;
        max-width: 100%;
    }

    .btn-quantity {
        width: 50px;
        height: 50px;
        font-size: 1.5em;
    }

    .quantity-change-indicator {
        font-size: 1.5em;
        min-width: 60px;
    }
    
    /* Modal fixes for mobile */
    .modal-content {
        width: 95%;
        max-width: 95vw;
        margin: 10px;
    }
    
    /* Form inputs should not exceed viewport */
    input[type="text"],
    input[type="number"],
    textarea {
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
    }
    
    /* Video container for barcode scanner */
    .video-wrapper {
        max-width: 100%;
        width: 100%;
    }
    
    #video {
        max-width: 100%;
        width: 100%;
    }
}

/* Extra small devices (iPhone SE, etc.) */
@media (max-width: 375px) {
    .toolbar-left h1 {
        font-size: 1em;
    }
    
    .search-section {
        padding: 10px;
    }
    
    .result-area,
    .article-display,
    .add-article-form {
        padding: 10px;
    }
    
    .article-header-large h2 {
        font-size: 1.3em;
    }
}