/**
 * DJEP Email Template Builder - Styles
 * toolsfordjs.com
 */

/* ============================================
   CSS Variables / Theme
   ============================================ */
:root {
    --bg-primary: #000000;
    --bg-secondary: #141414;
    --bg-tertiary: #1a1a1a;
    --bg-card: #1a1a1a;
    --bg-card-hover: #252525;

    --accent-primary: #1255DD;
    --accent-primary-hover: #0e44b1;
    --accent-secondary: #00d4ff;
    --accent-success: #10b981;
    --accent-warning: #f59e0b;
    --accent-danger: #ef4444;

    --text-primary: #ffffff;
    --text-secondary: #bbbbbb;
    --text-muted: #666666;

    --border-color: #2a2a2a;
    --border-color-light: #333333;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.5);

    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;

    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;

    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-heading: 'Space Grotesk', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
}

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: var(--spacing-md);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.1rem; }

p {
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
}

a {
    color: var(--accent-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--accent-primary-hover);
}

/* ============================================
   Layout
   ============================================ */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.page-wrapper {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.main-content {
    flex: 1;
    padding: var(--spacing-2xl) 0;
}

.page-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.page-header h1 {
    margin-bottom: var(--spacing-sm);
}

.page-header p {
    font-size: 1.05rem;
    max-width: 640px;
    margin: 0 auto;
}

/* ============================================
   Merge-tag source note
   ============================================ */
.source-note {
    max-width: 720px;
    margin: 0 auto var(--spacing-xl);
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.source-note strong {
    color: var(--text-primary);
}

.source-note code {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color-light);
    border-radius: var(--radius-sm);
    padding: 0.1em 0.4em;
    font-family: var(--font-mono);
    font-size: 0.85em;
    color: var(--accent-secondary);
}

/* ============================================
   Restore-last-session bar
   ============================================ */
.restore-bar {
    max-width: 720px;
    margin: 0 auto var(--spacing-lg);
    background-color: var(--bg-tertiary);
    border: 1px solid var(--accent-secondary);
    border-radius: var(--radius-md);
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    font-size: 0.88rem;
    color: var(--text-secondary);
}

.restore-bar-actions {
    display: flex;
    gap: var(--spacing-sm);
    flex-shrink: 0;
}

/* ============================================
   Template Gallery
   ============================================ */
.template-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.template-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-align: left;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    color: inherit;
    font-family: inherit;
}

.template-card:hover {
    background-color: var(--bg-card-hover);
    border-color: var(--border-color-light);
}

.template-card.active {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 1px var(--accent-primary);
    background-color: var(--bg-card-hover);
}

.template-card-icon {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-md);
    color: var(--accent-secondary);
}

.template-card h3 {
    font-size: 0.95rem;
    margin-bottom: 0;
}

.template-card p {
    font-size: 0.8rem;
    margin-bottom: 0;
    color: var(--text-muted);
}

/* ============================================
   Editor Layout
   ============================================ */
.editor-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: start;
}

.form-panel,
.preview-panel {
    min-width: 0;
}

@media (max-width: 1100px) {
    .editor-layout {
        grid-template-columns: 1fr;
    }
}

.form-panel {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.form-section {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.form-section:last-of-type {
    border-bottom: none;
}

.section-title {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--accent-primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--spacing-md);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group:last-child {
    margin-bottom: 0;
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-input,
.form-textarea {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    transition: border-color var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--text-muted);
}

.form-textarea {
    resize: vertical;
    min-height: 220px;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    line-height: 1.7;
}

/* ============================================
   Merge Tag Palette
   ============================================ */
.tag-palette {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.tag-chip {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color-light);
    border-radius: var(--radius-full);
    color: var(--accent-secondary);
    font-family: var(--font-mono);
    font-size: 0.78rem;
    padding: 0.3rem 0.7rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.tag-chip:hover {
    background-color: var(--bg-card-hover);
    border-color: var(--accent-secondary);
    color: var(--text-primary);
}


/* ============================================
   Formatting Toolbar (HTML output only)
   ============================================ */
.format-toolbar {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-sm);
    flex-wrap: wrap;
}

.format-btn {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color-light);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.85rem;
    padding: 0.35rem 0.7rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.format-btn:hover {
    background-color: var(--bg-card-hover);
    border-color: var(--accent-secondary);
}

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

.section-title-note {
    text-transform: none;
    letter-spacing: normal;
    color: var(--text-muted);
    font-weight: 500;
}

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

.color-field input[type="color"] {
    width: 44px;
    height: 40px;
    padding: 2px;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
}

.color-field .form-input {
    flex: 1;
}

.btn-sm {
    padding: 0.4rem 0.9rem;
    font-size: 0.82rem;
}

/* ============================================
   Sample Data Toggle
   ============================================ */
.sample-toggle {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.9rem;
    color: var(--text-secondary);
    cursor: pointer;
    user-select: none;
}

.sample-toggle input {
    width: 18px;
    height: 18px;
    accent-color: var(--accent-primary);
    cursor: pointer;
}

/* ============================================
   Form Actions
   ============================================ */
.form-actions {
    padding: var(--spacing-lg);
    display: flex;
    gap: var(--spacing-md);
    justify-content: flex-end;
}

/* ============================================
   Preview Panel
   ============================================ */
.preview-panel {
    position: sticky;
    top: calc(60px + var(--spacing-xl));
}

@media (max-width: 1100px) {
    .preview-panel {
        position: static;
    }
}

.hero-callout {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--accent-primary);
    border-radius: var(--radius-md);
    padding: var(--spacing-md) var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.hero-callout strong {
    color: var(--text-primary);
}

.output-tabs {
    display: flex;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.output-tab {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-family: var(--font-sans);
    font-size: 0.85rem;
    font-weight: 600;
    padding: var(--spacing-sm) var(--spacing-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.output-tab.active {
    background-color: var(--accent-primary);
    border-color: var(--accent-primary);
    color: #ffffff;
}

.output-tab-tag {
    font-size: 0.68rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    opacity: 0.75;
}

.preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.preview-header h3 {
    margin-bottom: 0;
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.preview-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.preview-wrapper {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    overflow: auto;
    max-height: 640px;
}

/* HTML email preview surface (light, matches actual inbox rendering) */
.email-preview {
    background-color: #ffffff;
    color: #1a1a1a;
    border-radius: var(--radius-sm);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.hint {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.preview-hint {
    margin-bottom: var(--spacing-sm);
}

.history-controls {
    display: flex;
    gap: var(--spacing-xs);
    margin-right: var(--spacing-sm);
}

.history-controls button {
    cursor: pointer;
    border: 1px solid var(--border-color-light);
    background: transparent;
    color: var(--text-secondary);
    font-family: var(--font-sans);
    font-size: 0.8rem;
    font-weight: 500;
    padding: 0.4rem 0.7rem;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.history-controls button:hover:not(:disabled) {
    color: var(--text-primary);
    border-color: var(--accent-secondary);
}

.history-controls button:disabled {
    opacity: 0.35;
    cursor: not-allowed;
}

/* ============================================
   DM-3: direct-manipulation email canvas -- the live, directly-editable
   HTML preview (replaces the old read-only sandboxed iframe). Rendered
   in-page (not an iframe) so contenteditable + native selection work
   identically across browsers; stays script-free by construction (see
   js/djep-emails.js header comment).
   ============================================ */
.email-canvas {
    min-width: 320px;
}

.email-canvas-subject {
    display: flex;
    align-items: baseline;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: #f4f4f4;
    border-bottom: 1px solid #e5e7eb;
    font-family: Arial, Helvetica, sans-serif;
}

.email-canvas-subject-label {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: #6b7280;
    flex-shrink: 0;
}

.email-canvas-subject-text {
    font-size: 0.95rem;
    color: #1a1a1a;
    outline: none;
    border-radius: 3px;
    padding: 2px 4px;
    flex: 1;
    min-height: 1.4em;
}

.email-canvas-subject-text:hover,
.email-canvas-subject-text:focus {
    background-color: rgba(0, 212, 255, 0.12);
    box-shadow: 0 0 0 1px var(--accent-secondary);
}

.email-canvas-table {
    background-color: #ffffff;
}

.email-canvas-header {
    padding: 20px 32px;
    border-radius: 3px;
    cursor: pointer;
    transition: outline-color 0.15s;
    outline: 2px dashed transparent;
    outline-offset: -2px;
}

.email-canvas-header:hover {
    outline-color: var(--accent-secondary);
}

.email-canvas-body {
    padding: 32px;
}

.email-canvas-footer {
    padding: 20px 32px;
    background-color: #f4f4f4;
    border-top: 1px solid #e5e7eb;
}

.dm-block-row {
    display: flex;
    align-items: stretch;
    gap: var(--spacing-xs);
    margin-bottom: 2px;
}

.dm-block-table {
    flex: 1;
    min-width: 0;
}

.dm-block-cell {
    border-radius: 3px;
    outline: 2px dashed transparent;
    outline-offset: -2px;
    transition: outline-color 0.15s, background-color 0.15s;
}

.dm-block-paragraph:hover,
.dm-block-paragraph:focus {
    outline-color: var(--accent-secondary);
    background-color: rgba(0, 212, 255, 0.06);
}

.dm-block-paragraph {
    outline: 2px dashed transparent;
    outline-offset: -2px;
}

.dm-block-controls {
    display: flex;
    flex-direction: column;
    gap: 2px;
    flex-shrink: 0;
    opacity: 0.35;
    transition: opacity var(--transition-fast);
}

.dm-block-row:hover .dm-block-controls {
    opacity: 1;
}

.dm-block-btn {
    width: 24px;
    height: 24px;
    line-height: 1;
    border: 1px solid var(--border-color-light);
    background-color: var(--bg-tertiary);
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.75rem;
    transition: all var(--transition-fast);
}

.dm-block-btn:hover {
    background-color: var(--bg-card-hover);
    border-color: var(--accent-secondary);
    color: var(--text-primary);
}

.dm-block-btn-danger:hover {
    border-color: var(--accent-danger);
    color: var(--accent-danger);
}

.dm-block-adder {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: #fafafa;
    border-top: 1px dashed #e5e7eb;
}

.dm-block-adder-label {
    font-size: 0.78rem;
    color: #6b7280;
    margin-right: var(--spacing-xs);
}

.dm-block-adder button {
    background-color: #ffffff;
    border: 1px solid #d1d5db;
    border-radius: var(--radius-sm);
    color: #1a1a1a;
    font-family: var(--font-sans);
    font-size: 0.78rem;
    padding: 0.3rem 0.7rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.dm-block-adder button:hover {
    background-color: #f0f9ff;
    border-color: var(--accent-secondary);
}

/* Plain-text preview surface */
.text-preview {
    background-color: #0d0d0d;
    color: #d4d4d4;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    line-height: 1.7;
    white-space: pre-wrap;
    word-break: break-word;
    padding: var(--spacing-lg);
    border-radius: var(--radius-sm);
    min-height: 300px;
}

.output-pane.hidden {
    display: none;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    background-color: var(--accent-primary);
    color: #ffffff;
}

.btn-primary:hover:not(:disabled) {
    background-color: var(--accent-primary-hover);
}

.btn-secondary {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover:not(:disabled) {
    background-color: var(--bg-card-hover);
    border-color: var(--border-color-light);
}

/* ============================================
   Toast
   ============================================ */
.toast {
    position: fixed;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    padding: var(--spacing-md) var(--spacing-xl);
    background-color: var(--accent-success);
    color: white;
    border-radius: var(--radius-md);
    font-weight: 500;
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    opacity: 0;
    transition: all var(--transition-normal);
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.toast.error {
    background-color: var(--accent-danger);
}

/* ============================================
   Utility
   ============================================ */
.hidden {
    display: none !important;
}

.text-center {
    text-align: center;
}

.text-muted {
    color: var(--text-muted);
}

.mt-3 {
    margin-top: var(--spacing-lg);
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 768px) {
    h1 { font-size: 2rem; }

    .container {
        padding: 0 var(--spacing-md);
    }

    .main-content {
        padding: var(--spacing-lg) 0;
    }

    .template-gallery {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    }

    .preview-header {
        flex-direction: column;
        align-items: stretch;
    }

    .preview-actions {
        justify-content: center;
    }

    .history-controls {
        margin-right: 0;
    }

    .form-actions {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .template-gallery {
        grid-template-columns: 1fr 1fr;
    }

    .preview-wrapper {
        padding: var(--spacing-md);
    }
}

/* touch: 44px-min form controls for thumb use (desktop unchanged) */
@media (hover: none) and (pointer: coarse) {
    .btn, .output-tab, .tag-chip { min-height: 44px; }
    input:not([type=checkbox]):not([type=radio]), textarea { min-height: 44px; }
}

@media (max-width: 768px) {
    .form-input,
    .form-textarea {
        font-size: 16px;
    }
}