/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Header styles */
header {
    text-align: center;
    margin-bottom: 30px;
    background: var(--bg-secondary);
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 8px 32px var(--shadow-color);
    backdrop-filter: blur(10px);
}

header h1 {
    color: var(--text-primary);
    font-size: 2.5rem;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px var(--shadow-color);
}

header h1 i {
    color: #e74c3c;
    margin-right: 10px;
}

header p {
    color: var(--text-muted);
    font-size: 1.1rem;
    margin-bottom: 20px;
}

/* Support footer styles */
.support-footer {
    margin-top: 25px;
    text-align: center;
}

.support-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding: 18px;
    background: linear-gradient(135deg, #ff6b6b, #ffa726);
    border-radius: 12px;
    box-shadow: 0 6px 24px rgba(255, 107, 107, 0.2);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.buy-me-coffee {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: #ffffff;
    color: #ff6b6b;
    text-decoration: none;
    padding: 10px 20px;
    border-radius: 22px;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(255, 107, 107, 0.3);
}

.buy-me-coffee:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 107, 107, 0.4);
    color: #ff6b6b;
    text-decoration: none;
}

.buy-me-coffee i {
    font-size: 1.1rem;
}

.support-text {
    color: #ffffff;
    font-size: 1rem;
    font-weight: 500;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.1);
}

/* Main content */
main {
    background: var(--bg-secondary);
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 8px 32px var(--shadow-color);
    backdrop-filter: blur(10px);
}

/* Form styles */
.hl7-form {
    margin-bottom: 30px;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--text-primary);
}

.form-group textarea,
.form-group input {
    width: 100%;
    padding: 12px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 14px;
    font-family: 'Courier New', monospace;
    transition: border-color 0.3s ease;
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.form-group textarea:focus,
.form-group input:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

/* Placeholder text styling for better theme compatibility */
.form-group textarea::placeholder,
.form-group input::placeholder {
    color: var(--text-muted);
    opacity: 0.7;
}

/* Button styles */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}

.btn-success {
    background: linear-gradient(135deg, #28a745, #20c997);
    color: white;
}

.btn-success:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(40, 167, 69, 0.4);
}

.btn-info {
    background: linear-gradient(135deg, #17a2b8, #6f42c1);
    color: white;
}

.btn-info:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(23, 162, 184, 0.4);
}

/* Alert styles */
.alert {
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.alert-danger {
    background: linear-gradient(135deg, #ff6b6b, #ff8e8e);
    color: white;
}

.alert-success {
    background: linear-gradient(135deg, #28a745, #34ce57);
    color: white;
}

.alert i {
    font-size: 1.2rem;
}

/* Section header styles */
.section-header {
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.section-header:hover {
    border-color: var(--accent-blue);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.2);
}

.section-header h3 {
    color: var(--text-primary);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.section-header h3 i {
    color: var(--accent-blue);
}

.section-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.section-description {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 10px;
}

.section-content {
    margin-bottom: 30px;
}

/* Field edit styles */
.field-edit-container {
    margin-bottom: 30px;
}

.field-info {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 15px;
    transition: all 0.3s ease;
}

.field-info:hover {
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transform: translateY(-1px);
}

/* Component field styling - keeping visual distinction for composite fields */
.field-info.composite-field {
    background: #f8f9ff;
    border-left: 4px solid #667eea;
}

/* Visual distinction for fields with values vs empty fields */
.field-info.field-has-value {
    background: #ffffff !important;
    border-right: 4px solid #28a745 !important;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05) !important;
}

.field-info.field-empty {
    background: #f8f9fa !important;
    border-right: 4px solid #dee2e6 !important;
    opacity: 0.8 !important;
}

.field-info.field-empty .field-header {
    background: var(--bg-tertiary) !important;
    color: var(--text-secondary) !important;
}

.field-info.field-has-value .field-header {
    background: var(--bg-tertiary) !important;
    color: var(--text-primary) !important;
}

.field-info.field-empty .field-number {
    background: var(--text-secondary) !important;
}

.field-info.field-has-value .field-number {
    background: var(--accent-blue) !important;
}

/* Segment container styling */
.segment-container {
    margin-bottom: 1.5em;
    border: 1px solid #e9ecef;
    border-radius: 8px;
    overflow: hidden;
}

.segment-header {
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
    padding: 1em;
    cursor: pointer;
    border-bottom: 1px solid #dee2e6;
    transition: background-color 0.2s ease;
}

.segment-header:hover {
    background: linear-gradient(135deg, #e9ecef, #dee2e6);
}

.segment-header h4 {
    margin: 0;
    color: #495057;
    font-size: 1.1em;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5em;
}

/* Visual cue for collapsed segments */
.segment-header h4::before {
    content: '▶';
    font-size: 0.8em;
    color: #6c757d;
    transition: transform 0.2s ease;
}

.segment-header:hover h4::before {
    transform: rotate(90deg);
}

.segment-controls {
    float: right;
    margin-top: -1.5em;
}

.segment-controls i {
    color: #6c757d;
    font-size: 0.9em;
    transition: transform 0.2s ease;
}

/* Make segment chevron icons more prominent */
.segment-controls i {
    color: #495057;
    font-size: 1.1em;
    transition: all 0.3s ease;
    background: rgba(255, 255, 255, 0.8);
    padding: 4px;
    border-radius: 4px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.segment-controls i:hover {
    background: rgba(255, 255, 255, 1);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
}

.segment-description {
    font-size: 0.85em;
    color: #6c757d;
    margin-top: 0.5em;
}

.segment-content {
    padding: 1em;
    background: #ffffff;
}

/* Collapsed state styling */
.segment-content.collapsed {
    display: none;
}

.field-content.collapsed {
    display: none;
}

/* Smooth transitions for expand/collapse */
.segment-content,
.field-content {
    transition: all 0.3s ease;
}

/* Field header styling */
.field-header {
    background: #f8f9fa;
    padding: 0.75em;
    margin-bottom: 0.5em;
    border-radius: 6px;
    cursor: pointer;
    border: 1px solid #e9ecef;
    transition: background-color 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.field-header-left {
    display: flex;
    align-items: center;
    gap: 12px;
    flex: 1;
}

.field-header:hover {
    background: #e9ecef;
}

/* Visual cue for collapsed fields */
.field-header .field-name::before {
    content: '▶';
    font-size: 0.8em;
    color: #6c757d;
    margin-right: 0.5em;
    transition: transform 0.2s ease;
}

.field-header:hover .field-name::before {
    transform: rotate(90deg);
}

.field-controls {
    margin-left: auto;
}

.field-controls i {
    color: #6c757d;
    font-size: 0.8em;
    transition: transform 0.2s ease;
}

/* Make field chevron icons more prominent */
.field-controls i {
    color: #495057;
    font-size: 0.9em;
    transition: all 0.3s ease;
    background: rgba(255, 255, 255, 0.8);
    padding: 3px;
    border-radius: 3px;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.field-controls i:hover {
    background: rgba(255, 255, 255, 1);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.15);
}

/* Smooth rotation for chevron icons */
.segment-controls i,
.field-controls i {
    transform-origin: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.field-content {
    padding: 0.75em;
    background: #ffffff;
    border: 1px solid #e9ecef;
    border-radius: 6px;
    margin-bottom: 0.5em;
}

.field-number {
    background: #667eea;
    color: white;
    padding: 4px 8px;
    border-radius: 4px;
    font-weight: 600;
    font-size: 0.9rem;
    margin-right: 8px;
}

.field-name {
    color: #2c3e50;
    font-weight: 600;
    font-size: 1rem;
}

.field-description-header {
    color: #6c757d;
    font-size: 0.9rem;
    font-style: italic;
    font-weight: normal;
}

.field-description {
    color: #6c757d;
    margin-bottom: 15px;
    font-size: 0.9rem;
    line-height: 1.4;
}

/* Quick action buttons */
.quick-actions {
    display: flex;
    gap: 10px;
    margin-bottom: 1.5em;
    padding: 1em;
    background: #f8f9fa;
    border-radius: 8px;
    border: 1px solid #e9ecef;
}

.btn-outline-primary {
    color: #007cba;
    border-color: #007cba;
    background: transparent;
}

.btn-outline-primary:hover {
    color: white;
    background: #007cba;
    border-color: #007cba;
}

.btn-outline-secondary {
    color: #6c757d;
    border-color: #6c757d;
    background: transparent;
}

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

.btn-sm {
    padding: 0.5em 1em;
    font-size: 0.875em;
}

.field-edit-field {
    margin-top: 10px;
}

.field-edit-field label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
    color: #2c3e50;
    font-size: 0.9rem;
}

.field-edit-input {
    width: 100%;
    padding: 10px;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    font-size: 14px;
    font-family: 'Courier New', monospace;
    transition: border-color 0.3s ease;
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.field-edit-input:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

/* Complete message styles */
.complete-message-container {
    background: var(--bg-tertiary);
    padding: 20px;
    border-radius: 10px;
    border: 2px solid var(--border-color);
}

.complete-message-container h3 {
    color: var(--text-primary);
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.complete-message-container h3 i {
    color: var(--accent-green);
}

.message-controls {
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.message-controls .help-text {
    color: #6c757d;
    font-size: 0.9rem;
    font-style: italic;
}

.complete-message-container textarea {
    width: 100%;
    padding: 15px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 14px;
    font-family: 'Courier New', monospace;
    background: var(--bg-secondary);
    color: var(--text-primary);
    resize: vertical;
    min-height: 120px;
}

.copy-buttons {
    margin-top: 15px;
    display: flex;
    gap: 10px;
}

/* Responsive design */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    header {
        padding: 20px;
    }
    
    header h1 {
        font-size: 2rem;
    }
    
    main {
        padding: 20px;
    }
    
    .field-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 5px;
    }
    
    .copy-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
}

/* Animation for copy success */
@keyframes copySuccess {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

.copySuccess {
    animation: copySuccess 0.3s ease;
}