/**
 * Diamond Art Viewer - Styles v3.2
 */

:root {
    --dav-primary: #14213D;
    --dav-primary-hover: #1a2d52;
    --dav-success: #4CAF50;
    --dav-danger: #e74c3c;
    --dav-light-bg: #fafafa;
    --dav-border: #ddd;
    --dav-text: #333;
    --dav-text-muted: #666;
    --dav-radius: 8px;
    --dav-radius-sm: 6px;
    --dav-transition: 0.2s ease;
}

.diamond-art-viewer {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--dav-text);
    box-sizing: border-box;
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 10px;
}

.diamond-art-viewer *, .diamond-art-viewer *::before, .diamond-art-viewer *::after {
    box-sizing: inherit;
}

/* Loading & Error */
.viewer-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 60vh;
    color: var(--dav-text-muted);
}

.viewer-loading .spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--dav-border);
    border-top-color: var(--dav-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-bottom: 16px;
}

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

.viewer-error {
    max-width: 400px;
    margin: 40px auto;
    padding: 24px;
    text-align: center;
    background: #fff4f4;
    border-radius: var(--dav-radius);
}

.viewer-error .btn-retry {
    background: var(--dav-primary);
    color: #fff;
    border: none;
    border-radius: var(--dav-radius);
    padding: 10px 20px;
    cursor: pointer;
}

/* Header con logo */
.viewer-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px solid var(--dav-border);
    gap: 10px;
}

.header-logo img {
    height: 40px;
    width: auto;
}

.viewer-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.viewer-actions button,
.viewer-actions a {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    background: var(--dav-primary);
    color: #fff;
    border: none;
    border-radius: var(--dav-radius-sm);
    padding: 8px 12px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    transition: all var(--dav-transition);
}

.viewer-actions button:hover,
.viewer-actions a:hover {
    background: var(--dav-primary-hover);
}

.viewer-actions svg {
    width: 16px;
    height: 16px;
}

/* Tooltip */
.instructions-tooltip {
    display: none;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1000;
    background: #fff;
    border-radius: var(--dav-radius);
    padding: 20px;
    max-width: 380px;
    width: 90%;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.instructions-tooltip.active { display: block; }

.instructions-tooltip h4 {
    margin: 0 0 12px;
    font-size: 16px;
    color: var(--dav-primary);
}

.instructions-tooltip ul {
    margin: 0;
    padding-left: 18px;
}

.instructions-tooltip li {
    margin-bottom: 8px;
    font-size: 13px;
    color: var(--dav-text-muted);
}

.tooltip-close {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 28px;
    height: 28px;
    background: var(--dav-light-bg);
    border: none;
    border-radius: 50%;
    font-size: 18px;
    cursor: pointer;
}

/* Body layout */
.viewer-body {
    display: flex;
    gap: 12px;
    margin-top: 10px;
}

/* Canvas */
.viewer-canvas-wrapper {
    flex: 1;
    min-width: 0;
    background: #fff;
    border: 1px solid var(--dav-border);
    border-radius: var(--dav-radius);
    overflow: hidden;
}

.canvas-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 12px;
    background: var(--dav-light-bg);
    border-bottom: 1px solid var(--dav-border);
}

.current-block-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--dav-primary);
    margin: 0;
}

.canvas-controls {
    display: flex;
    gap: 5px;
    align-items: center;
}

.canvas-controls button {
    background: var(--dav-primary);
    color: #fff;
    border: none;
    border-radius: var(--dav-radius-sm);
    padding: 6px 10px;
    font-size: 13px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: all var(--dav-transition);
    min-height: 30px;
}

.canvas-controls button:hover:not(:disabled) {
    background: var(--dav-primary-hover);
}

.canvas-controls button:disabled {
    background: #ccc;
    cursor: not-allowed;
}

.canvas-controls svg {
    width: 14px;
    height: 14px;
}

.btn-zoom-in, .btn-zoom-out, .btn-fit {
    min-width: 30px;
    padding: 6px !important;
    font-size: 15px !important;
}

.controls-separator {
    width: 1px;
    height: 18px;
    background: var(--dav-border);
    margin: 0 3px;
}

/* Canvas grande */
.canvas-container {
    position: relative;
    width: 100%;
    height: 78vh;
    min-height: 500px;
    max-height: 1000px;
    overflow: hidden;
    cursor: grab;
    background: 
        linear-gradient(45deg, #f0f0f0 25%, transparent 25%),
        linear-gradient(-45deg, #f0f0f0 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, #f0f0f0 75%),
        linear-gradient(-45deg, transparent 75%, #f0f0f0 75%);
    background-size: 20px 20px;
    background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
}

.canvas-container:active { cursor: grabbing; }
#diamond-canvas { display: block; }

/* Sidebar */
.viewer-sidebar {
    width: 200px;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.sidebar-section {
    background: #fff;
    border: 1px solid var(--dav-border);
    border-radius: var(--dav-radius);
    padding: 10px;
}

.sidebar-section h3 {
    font-size: 12px;
    font-weight: 600;
    color: var(--dav-primary);
    margin: 0 0 8px;
    padding-bottom: 6px;
    border-bottom: 1px solid var(--dav-border);
}

/* Block navigation */
.block-navigation {
    display: flex;
    align-items: center;
    gap: 5px;
}

.btn-nav {
    background: var(--dav-primary);
    color: #fff;
    border: none;
    border-radius: var(--dav-radius-sm);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    flex-shrink: 0;
}

.btn-nav:hover:not(:disabled) { background: var(--dav-primary-hover); }
.btn-nav:disabled { background: #ccc; cursor: not-allowed; }
.btn-nav svg { width: 16px; height: 16px; }

.block-selector-container {
    flex: 1;
    overflow: hidden;
}

.block-selector {
    display: flex;
    gap: 3px;
    overflow-x: auto;
    padding: 2px 0;
    scrollbar-width: none;
}

.block-selector::-webkit-scrollbar { display: none; }

.block-num {
    min-width: 26px;
    height: 26px;
    background: var(--dav-light-bg);
    border: 2px solid var(--dav-border);
    border-radius: 4px;
    font-size: 11px;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.block-num:hover { border-color: var(--dav-primary); }
.block-num.active {
    background: var(--dav-primary);
    border-color: var(--dav-primary);
    color: #fff;
}

/* Input bloque */
.block-input-wrap {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 5px;
    margin-top: 8px;
    padding-top: 8px;
    border-top: 1px solid var(--dav-border);
    font-size: 12px;
}

.block-input-wrap input {
    width: 50px;
    padding: 5px;
    border: 1px solid var(--dav-border);
    border-radius: 4px;
    font-size: 12px;
    text-align: center;
}

.block-input-wrap input:focus {
    outline: none;
    border-color: var(--dav-primary);
}

/* Paleta con SVGs */
.color-palette {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
}

.color-swatch {
    width: 36px;
    height: 36px;
    border-radius: 4px;
    border: 2px solid transparent;
    cursor: pointer;
    overflow: hidden;
    transition: all var(--dav-transition);
}

.color-swatch img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.color-swatch:hover {
    transform: scale(1.1);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.color-swatch.selected {
    border-color: var(--dav-primary);
    box-shadow: 0 0 0 2px var(--dav-primary);
    transform: scale(1.1);
}

/* Reset button */
.btn-reset-progress {
    width: 100%;
    background: transparent;
    color: var(--dav-danger);
    border: 2px solid var(--dav-danger);
    border-radius: var(--dav-radius);
    padding: 8px;
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
}

.btn-reset-progress:hover {
    background: var(--dav-danger);
    color: #fff;
}

/* Boton de completar bloque*/
.btn-fill-block {
    width: 100%;
    background: transparent;
    color: var(--dav-success);
    border: 2px solid var(--dav-success);
    border-radius: var(--dav-radius);
    padding: 8px;
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
}

.btn-fill-block:hover {
    background: var(--dav-success);
    color: #fff;
}
/* Modal centrado */
.cover-modal {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 10000;
    align-items: center;
    justify-content: center;
}

.cover-modal.active { display: flex; }

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.9);
}

.modal-content {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    max-width: 90vw;
    max-height: 90vh;
}

.modal-close {
    position: absolute;
    top: -40px;
    right: 0;
    width: 36px;
    height: 36px;
    background: #fff;
    border: none;
    border-radius: 50%;
    font-size: 24px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-image {
    max-width: 100%;
    max-height: 85vh;
    object-fit: contain;
    border-radius: var(--dav-radius);
}

/* Responsive */
@media (max-width: 900px) {
    .viewer-body { flex-direction: column; }
    .viewer-sidebar {
        width: 100%;
        flex-direction: row;
        flex-wrap: wrap;
    }
    .sidebar-section { flex: 1; min-width: 140px; }
    .canvas-container {
        height: calc(100vh - 180px);
        min-height: 350px;
        max-height: none;
    }
}

@media (max-width: 600px) {
    .diamond-art-viewer { padding: 0 6px; }
    .viewer-header { padding: 8px 0; }
    .header-logo img { height: 32px; }
    .viewer-actions button, .viewer-actions a {
        padding: 6px 10px;
        font-size: 12px;
    }
    .btn-text { display: none; }
    .canvas-container {
        height: calc(100vh - 160px);
        min-height: 300px;
    }
    .sidebar-section { min-width: 100%; }
    .color-swatch { width: 32px; height: 32px; }
}

/* Touch targets */
@media (hover: none) and (pointer: coarse) {
    .btn-nav, .canvas-controls button, .viewer-actions button {
        min-height: 40px;
        min-width: 40px;
    }
    .block-num { min-width: 32px; height: 32px; font-size: 13px; }
    .color-swatch { width: 40px; height: 40px; }
}

/* Full page */
body.diamond-viewer-page {
    margin: 0;
    padding: 8px;
    background: var(--dav-light-bg);
    min-height: 100vh;
}