:root {
    /* Color Palette - Yellow/Black/White Theme */
    --color-bg: #FAFAFA;
    --color-surface: #FFFFFF;
    --color-text-main: #111111;
    --color-text-muted: #666666;
    --color-border: #EAEAEA;
    
    --color-primary: #FFD600; /* Vibrant Yellow */
    --color-primary-hover: #F5CE00;
    --color-primary-fg: #000000;
    
    --color-error: #FF3B30;
    --color-success: #34C759;
    
    /* Spacing & Layout */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 3rem;
    
    --container-max-width: 960px;
    --header-height: 70px;
    
    /* Effects */
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.05), 0 2px 4px -1px rgba(0,0,0,0.03);
    --radius-sm: 6px;
    --radius-md: 12px;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--color-bg);
    color: var(--color-text-main);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Layout */
.app-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    width: 100%;
    padding: 0 var(--spacing-md);
    flex: 1;
    display: flex;
    flex-direction: column;
}

/* Header */
.main-header {
    height: var(--header-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) 0;
    margin-bottom: var(--spacing-lg);
    border-bottom: 1px solid transparent;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo-icon {
    font-size: 1.5rem;
}

.logo h1 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-text-main);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.badge {
    background-color: var(--color-text-main);
    color: var(--color-surface);
    font-size: 0.75rem;
    padding: 2px 6px;
    border-radius: 4px;
    font-weight: 500;
    letter-spacing: 0.02em;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.status-indicator .dot {
    width: 8px;
    height: 8px;
    background-color: var(--color-success);
    border-radius: 50%;
    box-shadow: 0 0 0 2px rgba(52, 199, 89, 0.2);
}

/* Main Editor */
.editor-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding-bottom: var(--spacing-xl);
}

.post-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    background: var(--color-surface);
    padding: var(--spacing-xl);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    flex: 1;
    border: 1px solid var(--color-border);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.form-group.flex-grow {
    flex: 1;
    display: flex;
    flex-direction: column;
}

label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-main);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

input[type="text"], input[type="date"], textarea {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 1rem;
    line-height: 1.5; /* Force consistent height (16px pad * 2 + 24px text + 4px border = 60px) */
    transition: all 0.2s ease;
    background: var(--color-bg);
}

input[type="text"]:focus, input[type="date"]:focus, textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    background: var(--color-surface);
    box-shadow: 0 0 0 4px rgba(255, 214, 0, 0.1);
}

#postTitle {
    font-size: 1.5rem;
    font-weight: 700;
    padding: var(--spacing-md);
}

#postContent {
    flex: 1;
    min-height: 400px;
    font-family: 'JetBrains Mono', monospace; /* Monospace for Markdown */
    font-size: 0.95rem;
    line-height: 1.6;
    resize: vertical;
}

/* Toolbar & Hints */
.editor-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
}

.hint {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

/* Actions */
.form-actions {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: var(--spacing-md);
    margin-top: auto;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.1s, background-color 0.2s;
}

.btn:active {
    transform: translateY(1px);
}

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

.btn-primary:hover {
    background-color: var(--color-primary-hover);
    box-shadow: 0 4px 12px rgba(255, 214, 0, 0.3);
}

/* Message Area (Toast/Error) */
.message-area {
    font-size: 0.875rem;
    font-weight: 500;
    margin-right: auto;
    opacity: 0;
    transition: opacity 0.3s;
}

.message-area.visible {
    opacity: 1;
}

.message-area.error {
    color: var(--color-error);
}

.message-area.success {
    color: var(--color-success);
}

/* Loading State */
.spinner {
    display: none;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(0,0,0,0.1);
    border-left-color: #000;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-left: 8px;
}

.btn.loading .btn-text {
    opacity: 0.5;
}

.btn.loading .spinner {
    display: block;
}

/* Layout Helpers */
.form-row {
    display: flex;
    gap: var(--spacing-md);
}

.flex-1 {
    flex: 1;
}

/* Checkbox */
.checkbox-group {
    flex-direction: row;
    align-items: center;
}

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

/* Tags Input */
.tags-input-container {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    padding: var(--spacing-md); /* Match standard input padding */
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-bg);
    width: 100%;
}

.tags-input-container:focus-within {
    border-color: var(--color-primary);
    background: var(--color-surface);
    box-shadow: 0 0 0 4px rgba(255, 214, 0, 0.1);
}

#tagInput {
    border: none;
    padding: 0; /* Remove inner padding to align with container padding */
    flex: 1;
    min-width: 120px;
    background: transparent;
    font-size: 1rem; /* Ensure match */
    height: 1.5rem; /* Match line-height */
}

#tagInput:focus {
    box-shadow: none;
}

.tag-chip {
    display: inline-flex;
    align-items: center;
    background: var(--color-primary);
    color: #000;
    padding: 4px 10px;
    border-radius: 16px;
    font-size: 0.85rem;
    font-weight: 500;
}

.tag-chip .remove-tag {
    margin-left: 6px;
    cursor: pointer;
    font-weight: bold;
    opacity: 0.6;
}

.tag-chip .remove-tag:hover {
    opacity: 1;
}

/* Image Upload Area */
.image-upload-area {
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-sm);
    padding: var(--spacing-md);
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
    background: var(--color-bg);
    min-height: 120px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.image-upload-area:hover {
    border-color: var(--color-primary);
    background: rgba(255, 214, 0, 0.05);
}

.upload-placeholder {
    display: flex;
    flex-direction: column;
    gap: 8px;
    color: var(--color-text-muted);
}

.upload-placeholder .icon {
    font-size: 2rem;
}

.upload-preview {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #000;
}

.upload-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.8;
}

.upload-preview .remove-btn {
    position: absolute;
    top: 5px;
    right: 5px;
    background: rgba(255, 255, 255, 0.8);
    border: none;
    border-radius: 50%;
    width: 24px;
    height: 24px;
    cursor: pointer;
    font-weight: bold;
    color: red;
}

.hidden {
    display: none !important;
}

/* Excerpt */
.excerpt-container {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.btn-small {
    align-self: flex-start;
    padding: 4px 12px;
    font-size: 0.75rem;
    background: var(--color-text-muted);
    color: white;
    border: none;
    border-radius: 12px;
    cursor: pointer;
}

.btn-small:hover {
    background: var(--color-text-main);
}

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

/* Mobile Tweak */
@media (max-width: 600px) {
    .post-form {
        padding: var(--spacing-md);
    }
    #postTitle {
        font-size: 1.25rem;
    }
}

/* EasyMDE Customization */
.EasyMDEContainer {
    display: flex;
    flex-direction: column;
    flex: 1;
}

.editor-toolbar {
    border-color: var(--color-border) !important;
    background-color: var(--color-bg) !important;
    border-radius: var(--radius-sm) var(--radius-sm) 0 0 !important;
    opacity: 1 !important;
}

.editor-toolbar button {
    color: var(--color-text-main) !important;
    border: none !important;
}

.editor-toolbar button:hover, .editor-toolbar button.active {
    background: rgba(0, 0, 0, 0.05) !important;
    border-color: transparent !important;
}

.CodeMirror {
    border-color: var(--color-border) !important;
    border-radius: 0 0 var(--radius-sm) var(--radius-sm) !important;
    font-family: 'JetBrains Mono', monospace !important;
    font-size: 0.95rem !important;
    color: var(--color-text-main) !important;
    background-color: var(--color-bg) !important;
    min-height: 400px !important;
}

.CodeMirror-focused {
    border-color: var(--color-primary) !important;
    box-shadow: 0 0 0 4px rgba(255, 214, 0, 0.1) !important;
}

.editor-preview, .editor-preview-side {
    background-color: var(--color-surface) !important;
    color: var(--color-text-main) !important;
    font-family: 'Inter', sans-serif !important;
}

/* Hide the default editor toolbar since EasyMDE adds its own */
.post-form .editor-toolbar:not(.EasyMDEContainer .editor-toolbar) {
    display: none;
}

/* Fix Preview Overflow */
.editor-preview pre, .editor-preview-side pre {
    max-width: 100%;
    white-space: pre-wrap;
    word-break: break-word; /* Ensure long words also break */
    background: #f6f8fa; /* Optional: adds a background similar to GitHub */
    padding: 10px;
    border-radius: 4px;
}

.editor-preview ul, .editor-preview-side ul,
.editor-preview ol, .editor-preview-side ol {
    padding-left: 2rem;
}