/* --- PHOTOSHOP UI THEME (FUNCTIONAL) --- */
:root {
    --ps-bg: #535353;
    --ps-bg-dark: #252525;
    --ps-bg-panel: #323232;
    --ps-bg-panel-header: #3e3e3e;
    --ps-border-light: #4a4a4a;
    --ps-border-dark: #181818;
    --ps-text-light: #d1d1d1;
    --ps-text-medium: #8e8e8e;
    --ps-accent-blue: #1563f0;
    --ps-input-bg: #2d2d2d;
    --ps-button-bg: #4a4a4a;
    --ps-button-hover-bg: #5e5e5e;
    --danger: #f7768e;
    --warning: #e0af68;
    --primary: #7aa2f7;
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-mono: "SF Mono", "Consolas", "Courier New", monospace;
}

/* --- Global Resets & Body --- */
* { box-sizing: border-box; }
body {
    font-family: var(--font-sans);
    background-color: var(--ps-bg-dark);
    color: var(--ps-text-light);
    margin: 0;
    overflow: hidden;
    font-size: 12px;
}
h1, h2, h3 { margin: 0 0 10px 0; color: var(--ps-text-light); font-weight: 400; font-size: 1.1em; border-bottom: 1px solid var(--ps-border-light); padding-bottom: 5px;}
h1 { border: none; padding: 0; font-size: 1.2em; }
h1 .version { font-size: 0.7em; color: var(--ps-text-medium); }
p { margin: 0; }
.help-text { font-size: 11px; color: var(--ps-text-medium); margin-bottom: 8px; line-height: 1.4; }

/* --- Main Layout --- */
.photoshop-ui { display: flex; flex-direction: column; height: 100vh; width: 100vw; }
.main-content { display: grid; grid-template-columns: 48px 1fr 280px; flex-grow: 1; min-height: 0; transition: grid-template-columns 0.2s ease-in-out; }
.photoshop-ui.panels-collapsed .main-content { grid-template-columns: 48px 1fr 30px; }

/* --- Top Options Bar --- */
.options-bar {
    background-color: var(--ps-bg-panel);
    border-bottom: 1px solid var(--ps-border-dark);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 15px;
    height: 50px;
    flex-shrink: 0;
}
.app-title p { font-size: 11px; color: var(--ps-text-medium); }
.main-actions { display: flex; align-items: center; gap: 10px; }

.zoom-controls {
    display: flex;
    align-items: center;
    gap: 4px;
    background-color: var(--ps-bg-dark);
    padding: 4px;
    border-radius: 4px;
    border: 1px solid var(--ps-border-dark);
}
.zoom-controls button {
    padding: 2px 8px;
    font-weight: bold;
    min-width: 25px;
}
#zoom-display {
    padding: 0 8px;
    font-size: 11px;
    color: var(--ps-text-medium);
    min-width: 45px;
    text-align: center;
}

/* --- Left Toolbar --- */
.left-toolbar {
    background: var(--ps-bg-panel);
    border-right: 1px solid var(--ps-border-dark);
    padding: 10px 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
}
.tool-btn {
    width: 36px; height: 32px;
    background: transparent;
    border: 1px solid transparent;
    border-radius: 4px;
    padding: 5px;
    cursor: pointer;
    color: var(--ps-text-light);
    transition: all 0.1s ease;
}
.tool-btn:hover { background-color: var(--ps-button-hover-bg); border-color: var(--ps-border-light); }
.tool-btn:disabled { color: #666; cursor: not-allowed; background: transparent !important; }
.tool-btn svg { width: 100%; height: 100%; fill: currentColor; }
#lock-frames-button.locked { background-color: var(--danger); }
.left-toolbar .separator { height: 1px; width: 80%; background-color: var(--ps-border-light); margin: 5px 0; }

.tool-btn.active {
    background-color: var(--ps-accent-blue);
    border-color: #0d46a9;
}
.tool-btn.active:hover {
    background-color: #1a6ff0;
}

/* --- Workspace --- */
.workspace { background-color: var(--ps-bg); display: flex; flex-direction: column; min-width: 0; padding: 10px; }
.document-window { flex-grow: 1; display: flex; flex-direction: column; min-height: 0; border: 1px solid var(--ps-border-dark); border-radius: 4px; }
.document-tab { background-color: var(--ps-bg-panel-header); padding: 5px 10px; border-bottom: 1px solid var(--ps-border-dark); display: flex; justify-content: space-between; align-items: center; }
.close-tab-btn { background: none; border: none; color: var(--ps-text-medium); cursor: pointer; font-size: 16px; padding: 0 5px; }
.editor-area-container { background: var(--ps-bg); flex-grow: 1; padding: 0; min-height: 0; }
.editor-area {
    display: grid;
    grid-template-columns: 30px 1fr;
    grid-template-rows: 30px 1fr;
    width: 100%;
    height: 100%;
    background-color: var(--ps-bg-dark);
    overflow: auto;
}
.ruler-corner { position: sticky; top: 0; left: 0; z-index: 20; background-color: var(--ps-bg-panel); border-right: 1px solid var(--ps-border-light); border-bottom: 1px solid var(--ps-border-light); }
#ruler-top { position: sticky; top: 0; z-index: 15; }
#ruler-left { position: sticky; left: 0; z-index: 15; }
#image-container { 
    position: relative; 
    width: fit-content; 
    height: fit-content;
    grid-column: 2;
    grid-row: 2;
    transform-origin: top left;
}
#image-display { display: block; }
#measurement-canvas { position: absolute; top: 0; left: 0; z-index: 10; cursor: default; }

/* --- INICIO NUEVO CURSOR --- */
#measurement-canvas.cursor-eraser {
    cursor: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24'%3E%3Cpath fill='white' stroke='black' stroke-width='1.5' d='M5.5 13.5l5-5l8 8l-5 5l-8-8zM4 15l-1.5 1.5L6 20l1.5-1.5L4 15zm12-9l1.5-1.5L21 8l-1.5 1.5L16 6z'/%3E%3Cpath fill='%23d1d1d1' d='M6.5 12.5l5-5l3 3l-5 5l-3-3z'/%3E%3C/svg%3E") 4 18, auto;
}
/* --- FIN NUEVO CURSOR --- */


/* --- Right Panel Stack --- */
.right-panel-stack { background: var(--ps-bg-panel); border-left: 1px solid var(--ps-border-dark); display: flex; flex-direction: column; overflow: hidden; }
.panel-header-icons { background-color: var(--ps-bg-panel-header); padding: 5px; text-align: right; border-bottom: 1px solid var(--ps-border-dark); }
.collapse-panels-btn { background: none; border: none; color: var(--ps-text-medium); font-size: 14px; cursor: pointer; }
.panel-content { flex-grow: 1; overflow: auto; padding: 10px; display: flex; flex-direction: column; gap: 10px; }
.photoshop-ui.panels-collapsed .panel-content { display: none; }
.photoshop-ui.panels-collapsed .panel-header-icons { text-align: center; }

/* Styling individual panels */
details.panel > summary { background-color: var(--ps-bg-panel-header); color: var(--ps-text-light); padding: 8px 10px 8px 25px; font-weight: bold; cursor: pointer; list-style: none; position: relative; border-bottom: 1px solid var(--ps-border-dark); }
details.panel > summary::-webkit-details-marker { display: none; }
details.panel > summary::before { content: '►'; position: absolute; left: 10px; top: 50%; transform: translateY(-50%); font-size: 10px; transition: transform 0.2s; }
details.panel[open] > summary::before { transform: translateY(-50%) rotate(90deg); }
details.panel > div { padding: 10px; border-bottom: 1px solid var(--ps-border-dark); }
.sub-panel { border: 1px solid var(--ps-border-light); border-radius: 3px; margin-bottom: 10px; }
.sub-panel summary { padding: 5px; font-weight: normal; background-color: var(--ps-bg-panel); font-size: 11px; }
.sub-panel > * { padding: 8px; }
.sub-panel button { width: 100%; }

/* --- General Control Styling --- */
button { background-color: var(--ps-button-bg); color: var(--ps-text-light); border: 1px solid var(--ps-border-dark); box-shadow: 0 1px 0 0 var(--ps-border-light) inset; padding: 4px 12px; border-radius: 4px; cursor: pointer; font-size: 12px; transition: background-color 0.1s; }
button:hover { background-color: var(--ps-button-hover-bg); }
button:disabled { background-color: #3a3a3a; color: #777; cursor: not-allowed; box-shadow: none; }
button.icon-btn { padding: 5px; line-height: 0; }
button.icon-btn svg { width: 16px; height: 16px; fill: currentColor; }
button.small-action { padding: 2px 8px; font-size: 11px; flex-grow: 1; }

input[type="number"], select { background-color: var(--ps-input-bg); border: 1px solid var(--ps-border-dark); color: var(--ps-text-light); border-radius: 3px; padding: 4px; width: 100%; }
input[type="range"] { width: 100%; }
select { width: 100%; flex-grow: 1; }
.input-group { display: flex; gap: 8px; align-items: center; margin-bottom: 10px; }
.input-group.center { justify-content: center; }
.input-group label { flex-shrink: 0; }

.styled-list { list-style-type: none; padding: 0; margin: 0; max-height: 150px; overflow-y: auto; background-color: var(--ps-input-bg); border: 1px solid var(--ps-border-dark); border-radius: 3px; }
.styled-list li { display: flex; align-items: center; gap: 8px; padding: 6px; border-bottom: 1px solid var(--ps-border-dark); cursor: pointer; }
.styled-list li:last-child { border-bottom: none; }
.styled-list li:hover { background-color: var(--ps-accent-blue); }
.history-thumb { width: 32px; height: 32px; object-fit: contain; background-color: var(--ps-bg-dark); border-radius: 2px; flex-shrink: 0;}

/* --- Preview & Export Specifics --- */
#preview-canvas { background-color: var(--ps-bg-dark); border: 1px solid var(--ps-border-dark); margin: 0 auto 10px; display: block; image-rendering: pixelated; }
#code-preview-container { display: none; grid-template-columns: 1fr; gap: 10px; margin-top: 10px; }
.code-editor { background-color: var(--ps-input-bg); border: 1px solid var(--ps-border-dark); border-radius: 3px; overflow: hidden; display: flex; flex-direction: column; }
.code-editor-header { background-color: var(--ps-bg-panel); padding: 5px 8px; font-size: 11px; color: var(--ps-text-medium); border-bottom: 1px solid var(--ps-border-dark); position: relative;}
.copy-button { position: absolute; top: 50%; right: 5px; transform: translateY(-50%); padding: 2px 5px; font-size: 10px; background-color: var(--ps-bg-dark); border-color: var(--ps-border-dark); }

.code-editors {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5px;
}

.code-editor-body {
    display: flex;
    min-height: 100px;
    max-height: 200px;
    overflow: auto;
}

.line-numbers { padding: 8px 5px; font-family: var(--font-mono); color: var(--ps-text-medium); text-align: right; background-color: #222; user-select: none; }
.code-editor pre { margin: 0; padding: 8px; flex-grow: 1; font-family: var(--font-mono); font-size: 11px; line-height: 1.5; }
.live-preview-container { display: none; }

/* --- Welcome Screen & Toast --- */
#welcome-screen { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background-color: rgba(0, 0, 0, 0.7); display: flex; justify-content: center; align-items: center; z-index: 100; transition: opacity 0.3s ease; }
#drop-zone { width: 80%; max-width: 600px; height: 300px; border: 2px dashed var(--ps-text-medium); border-radius: 10px; display: flex; flex-direction: column; justify-content: center; align-items: center; text-align: center; color: var(--ps-text-medium); transition: all 0.2s; background-color: rgba(255,255,255,0.05); }
#drop-zone.dragover { background-color: rgba(21, 99, 240, 0.2); border-color: var(--ps-accent-blue); }
#image-loader-label { background-color: var(--ps-accent-blue); color: white; padding: 10px 20px; border-radius: 6px; cursor: pointer; margin-top: 15px; }
#image-loader { display: none; }
#toast { position: fixed; bottom: -100px; left: 50%; transform: translateX(-50%); background-color: #c3c3c3; color: var(--ps-text-dark); padding: 10px 20px; border-radius: 15px; box-shadow: 0 4px 12px rgba(0,0,0,0.5); font-weight: 500; z-index: 200; transition: bottom 0.5s ease-out; }

/* ===== INICIO: NUEVOS ESTILOS PARA INDICADOR DE CARGA ===== */
#loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(37, 37, 37, 0.7); /* Fondo oscuro semitransparente */
    z-index: 9999; /* Asegura que esté por encima de todo */
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: var(--ps-text-light);
    font-size: 1.2em;
    opacity: 1;
    transition: opacity 0.3s ease-in-out;
    pointer-events: all;
}

#loading-overlay.hidden {
    opacity: 0;
    pointer-events: none; /* El usuario no puede interactuar con el overlay oculto */
}

#loading-overlay .spinner {
    width: 50px;
    height: 50px;
    border: 5px solid var(--ps-border-light);
    border-top: 5px solid var(--ps-accent-blue); /* Color del acento para la parte que gira */
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 20px;
}

#loading-overlay p {
    font-weight: 500;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}
/* ===== FIN: NUEVOS ESTILOS PARA INDICADOR DE CARGA ===== */

/* ===== INICIO: ESTILOS PARA MODAL DEL TUTORIAL ===== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    z-index: 1000;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.modal:not(.hidden) {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background-color: var(--ps-bg-panel);
    border-radius: 8px;
    border: 1px solid var(--ps-border-dark);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    max-width: 600px;
    width: 90%;
    max-height: 80vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.modal-header {
    padding: 15px 20px;
    border-bottom: 1px solid var(--ps-border-dark);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    margin: 0;
    color: var(--ps-text-light);
    font-size: 1.2em;
}

.close-btn {
    background: none;
    border: none;
    color: var(--ps-text-medium);
    font-size: 24px;
    cursor: pointer;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: background-color 0.2s ease;
}

.close-btn:hover {
    background-color: var(--ps-button-hover-bg);
    color: var(--ps-text-light);
}

.modal-body {
    padding: 20px;
    overflow-y: auto;
    flex-grow: 1;
}

.tutorial-step {
    display: none;
    text-align: center;
}

.tutorial-step h3 {
    margin-bottom: 15px;
    color: var(--ps-text-light);
    font-size: 1.1em;
}

.tutorial-svg {
    max-width: 100%;
    height: 150px;
    margin: 15px 0;
    border: 1px solid var(--ps-border-dark);
    border-radius: 4px;
    background-color: var(--ps-bg-dark);
}

.tutorial-step p {
    color: var(--ps-text-medium);
    line-height: 1.5;
    margin: 15px 0;
}

.tutorial-navigation {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 20px;
    padding-top: 15px;
    border-top: 1px solid var(--ps-border-dark);
}

.tutorial-navigation button {
    padding: 8px 16px;
    background-color: var(--ps-accent-blue);
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.tutorial-navigation button:hover:not(:disabled) {
    background-color: #1a6ff0;
}

.tutorial-navigation button:disabled {
    background-color: var(--ps-button-bg);
    color: var(--ps-text-medium);
    cursor: not-allowed;
}

#step-indicator {
    font-weight: bold;
    color: var(--ps-text-light);
}

.modal-footer {
    padding: 15px 20px;
    border-top: 1px solid var(--ps-border-dark);
    text-align: center;
}

.modal-footer button {
    background-color: var(--ps-button-bg);
    color: var(--ps-text-light);
    border: 1px solid var(--ps-border-dark);
    padding: 8px 16px;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.modal-footer button:hover {
    background-color: var(--ps-button-hover-bg);
}
/* ===== FIN: ESTILOS PARA MODAL DEL TUTORIAL ===== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    z-index: 10000;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 1;
    transition: opacity 0.3s ease-in-out;
}

.modal.hidden {
    opacity: 0;
    pointer-events: none;
}

.modal-content {
    background-color: var(--ps-bg-panel);
    border: 1px solid var(--ps-border-dark);
    border-radius: 8px;
    width: 90%;
    max-width: 600px;
    max-height: 80vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.modal-header {
    background-color: var(--ps-bg-panel-header);
    padding: 15px 20px;
    border-bottom: 1px solid var(--ps-border-dark);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    margin: 0;
    font-size: 1.2em;
    color: var(--ps-text-light);
}

.close-btn {
    background: none;
    border: none;
    color: var(--ps-text-medium);
    font-size: 24px;
    cursor: pointer;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.close-btn:hover {
    color: var(--ps-text-light);
}

.modal-body {
    padding: 20px;
    overflow-y: auto;
    flex-grow: 1;
}

.tutorial-step {
    display: none;
    text-align: center;
}

.tutorial-step h3 {
    margin-bottom: 15px;
    color: var(--ps-text-light);
}

.tutorial-svg {
    max-width: 100%;
    height: auto;
    margin: 15px 0;
    border: 1px solid var(--ps-border-light);
    border-radius: 4px;
}

.tutorial-step p {
    color: var(--ps-text-medium);
    font-size: 14px;
    line-height: 1.5;
    margin: 15px 0;
}

.tutorial-navigation {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 20px;
    padding-top: 15px;
    border-top: 1px solid var(--ps-border-dark);
}

.tutorial-navigation button {
    padding: 8px 16px;
    font-size: 14px;
}

#step-indicator {
    font-weight: bold;
    color: var(--ps-text-light);
}

.modal-footer {
    background-color: var(--ps-bg-panel);
    padding: 15px 20px;
    border-top: 1px solid var(--ps-border-dark);
    text-align: center;
}

#dont-show-again {
    background-color: var(--warning);
    color: var(--ps-bg-dark);
    border: 1px solid var(--ps-border-dark);
    padding: 8px 16px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
}

#dont-show-again:hover {
    background-color: #f0c674;
}
/* ===== END TUTORIAL MODAL STYLES ===== */