/* ============================================================
    Proofivo - Styles
   ============================================================ */

/* --- CSS Variables --- */
:root {
    --color-bg: #f5f5f5;
    --color-panel: #ffffff;
    --color-border: #ddd;
    --color-text: #333;
    --color-text-muted: #666;
    --color-primary: #2563eb;
    --color-primary-hover: #1d4ed8;
    --color-success: #16a34a;
    --color-success-hover: #15803d;
    --color-danger: #dc2626;
    --color-paper: #ffffff;
    --color-paper-shadow: rgba(0, 0, 0, 0.15);
    --color-ruler: #f0f0f0;
    --color-ruler-mark: #999;

    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;

    --radius-sm: 4px;
    --radius-md: 8px;

    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-sm: 12px;
    --font-size-md: 14px;
    --font-size-lg: 16px;

    --panel-width: 280px;
    --ruler-size: 24px;
    --header-height: 60px;
    --status-height: 28px;
}

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

html, body {
    height: 100%;
    overflow: hidden;
}

/* Allow normal page scrolling on privacy page */
html.privacy-page, body.privacy-page {
    height: auto;
    overflow: auto;
}

.privacy-page .app-container {
    min-height: 100vh;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-md);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.4;
}

/* --- Layout --- */
.app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

.app-header {
    height: var(--header-height);
    background: var(--color-panel);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-sm) var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex-shrink: 0;
}

.app-header h1 {
    font-size: 20px;
    font-weight: 600;
    color: var(--color-primary);
}

.app-header .subtitle {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

.main-content {
    display: flex;
    flex: 1;
    overflow: hidden;
}

.status-bar {
    height: var(--status-height);
    background: var(--color-panel);
    border-top: 1px solid var(--color-border);
    padding: 0 var(--spacing-lg);
    display: flex;
    align-items: center;
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    flex-shrink: 0;
}

/* --- Controls Panel --- */
.controls-panel {
    width: var(--panel-width);
    background: var(--color-panel);
    border-right: 1px solid var(--color-border);
    overflow-y: auto;
    flex-shrink: 0;
    padding: var(--spacing-md);
}

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

.control-section:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.control-section h2 {
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-transform: uppercase;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-sm);
    letter-spacing: 0.5px;
}

/* --- File Upload --- */
.file-upload-area {
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    text-align: center;
    transition: border-color 0.2s, background 0.2s;
}

.file-upload-area:hover,
.file-upload-area.drag-over {
    border-color: var(--color-primary);
    background: rgba(37, 99, 235, 0.05);
}

.file-hint {
    margin-top: var(--spacing-sm);
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

.file-types {
    margin-top: var(--spacing-xs);
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
    opacity: 0.7;
}

.file-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: var(--color-bg);
    border-radius: var(--radius-sm);
}

.file-name {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: var(--font-size-sm);
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-md);
    font-weight: 500;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background 0.2s, opacity 0.2s;
}

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

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

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

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

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

.btn-small {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-sm);
}

.btn-large {
    width: 100%;
    padding: var(--spacing-md);
    font-size: var(--font-size-lg);
}

.btn-icon {
    width: 24px;
    height: 24px;
    padding: 0;
    border: none;
    background: none;
    color: var(--color-text-muted);
    cursor: pointer;
    font-size: 18px;
    line-height: 1;
    border-radius: var(--radius-sm);
}

.btn-icon:hover {
    background: var(--color-bg);
    color: var(--color-danger);
}

/* --- Form Controls --- */
.form-select {
    width: 100%;
    padding: var(--spacing-sm);
    font-size: var(--font-size-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: white;
    cursor: pointer;
}

.form-select-small {
    width: auto;
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-sm);
}

.form-input {
    padding: var(--spacing-sm);
    font-size: var(--font-size-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
}

.form-range {
    width: 100%;
    cursor: pointer;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
    cursor: pointer;
    font-size: var(--font-size-md);
}

.checkbox-label input {
    width: 16px;
    height: 16px;
    cursor: pointer;
}

/* --- Scale Control --- */
.scale-control {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.scale-input-group {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.scale-input {
    width: 60px;
    text-align: center;
}

/* --- Bleed Amount --- */
.bleed-amount {
    margin-top: var(--spacing-sm);
    margin-left: 24px;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
}

/* --- Calibration --- */
.calibration-control {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.hint {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-sm);
}

/* --- Page Navigation --- */
.page-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-sm);
}

#pageIndicator {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

/* --- Info Display --- */
.info-display {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    line-height: 1.6;
}

.info-display p {
    margin: 0;
}

/* --- Preview Area --- */
.preview-area {
    flex: 1;
    display: grid;
    grid-template-columns: var(--ruler-size) 1fr;
    grid-template-rows: var(--ruler-size) 1fr auto;
    background: var(--color-bg);
    overflow: hidden;
}

/* --- Rulers --- */
.ruler {
    background: var(--color-ruler);
    position: relative;
    overflow: hidden;
}

.ruler-horizontal {
    grid-column: 2;
    grid-row: 1;
    border-bottom: 1px solid var(--color-border);
}

.ruler-vertical {
    grid-column: 1;
    grid-row: 2;
    border-right: 1px solid var(--color-border);
}

.ruler-mark {
    position: absolute;
    background: var(--color-ruler-mark);
}

.ruler-horizontal .ruler-mark {
    width: 1px;
    bottom: 0;
}

.ruler-vertical .ruler-mark {
    height: 1px;
    right: 0;
}

.ruler-label {
    position: absolute;
    font-size: 9px;
    color: var(--color-text-muted);
}

.ruler-horizontal .ruler-label {
    bottom: 2px;
    transform: translateX(-50%);
}

.ruler-vertical .ruler-label {
    right: 2px;
    transform: translateY(-50%) rotate(-90deg);
    transform-origin: right center;
}

/* --- Preview Container --- */
.preview-container {
    grid-column: 2;
    grid-row: 2;
    overflow: auto;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    background:
        linear-gradient(45deg, #e0e0e0 25%, transparent 25%),
        linear-gradient(-45deg, #e0e0e0 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, #e0e0e0 75%),
        linear-gradient(-45deg, transparent 75%, #e0e0e0 75%);
    background-size: 20px 20px;
    background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
    background-color: #f0f0f0;
}

.preview-placeholder {
    color: var(--color-text-muted);
    text-align: center;
    padding: var(--spacing-xl);
}

#previewCanvas {
    box-shadow: 0 4px 20px var(--color-paper-shadow);
    background: var(--color-paper);
}

/* --- Preview Controls --- */
.preview-controls {
    grid-column: 1 / -1;
    grid-row: 3;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: var(--color-panel);
    border-top: 1px solid var(--color-border);
}

#zoomLevel {
    min-width: 50px;
    text-align: center;
    font-size: var(--font-size-sm);
}

/* --- Loading Overlay --- */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.9);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    z-index: 1000;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

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

/* --- Custom Canvas Input Rows --- */
.custom-canvas-inputs {
    margin-top: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: var(--color-bg);
    border-radius: var(--radius-sm);
}

.input-row {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.input-row:last-child {
    margin-bottom: 0;
}

.input-row label {
    flex: 0 0 80px;
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.input-row input {
    flex: 1;
}

/* --- Canvas Filters --- */
#previewCanvas.grayscale {
    filter: grayscale(100%);
}

/* --- Responsive --- */
@media (max-width: 800px) {
    .main-content {
        flex-direction: column;
    }

    .controls-panel {
        width: 100%;
        max-height: 40vh;
        border-right: none;
        border-bottom: 1px solid var(--color-border);
    }

    .preview-area {
        flex: 1;
        min-height: 300px;
    }
}

/* ------------------------------------------------------------
   Privacy page specific styles
   ------------------------------------------------------------ */
.doc-container {
    padding: 24px;
    max-width: 1100px;
    margin: 0 auto 48px;
}

.privacy-hero {
    background: linear-gradient(135deg, rgba(37,99,235,0.08), rgba(22,163,74,0.04));
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 32px 28px;
    margin-bottom: 24px;
    box-shadow: 0 6px 20px rgba(16,24,40,0.04);
}

.privacy-hero h2 {
    margin: 0 0 6px 0;
    color: var(--color-primary);
    font-size: 26px;
    line-height: 1.15;
    letter-spacing: -0.2px;
}

.privacy-hero .muted {
    color: var(--color-text-muted);
    margin-bottom: 12px;
}

.policy-grid {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 28px;
    align-items: start;
}

.policy-content { background: white; padding: 22px; border-radius: 10px; border:1px solid var(--color-border); }
.policy-content p, .policy-content li { font-size: 15px; line-height: 1.7; color: var(--color-text); }
.policy-section { margin-bottom: 20px; }
.policy-section h3 { margin-bottom: 10px; font-size: 16px; }

.policy-side .contact-card, .policy-side .quick-facts {
    background: var(--color-panel);
    border: 1px solid var(--color-border);
    padding: 16px;
    border-radius: 10px;
    margin-bottom: 14px;
    box-shadow: 0 6px 18px rgba(16,24,40,0.03);
}

.contact-email { color: white; font-weight:600; display:inline-block; margin-top:8px; background: var(--color-primary); padding:8px 12px; border-radius:6px; text-decoration:none; }

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

.quick-facts ul { list-style: none; padding-left: 0; margin: 8px 0 0 0; }
.quick-facts li { position: relative; padding-left: 22px; margin-bottom: 8px; }
.quick-facts li:before { content: "✔"; position: absolute; left: 0; top: 0; color: var(--color-success); font-size:12px; }

@media (max-width: 980px) {
    .policy-grid { grid-template-columns: 1fr; }
    .toc { position: relative; top: auto; }
}