/* ─────────────────────────────────────────────────────────────────────────
   fx StudioCHART ULTRA — Stylesheet
   ───────────────────────────────────────────────────────────────────────── */

@import url('https://fonts.googleapis.com/css2?family=Barlow+Condensed:wght@400;600;700;800&family=Roboto+Condensed:wght@300;400;700&display=swap');


/* ─── 1. VARIABLES ───────────────────────────────────────────────────────── */
:root {
    --red:        #D6070F;
    --red-dark:   #A8050B;
    --black:      #000000;
    --white:      #FFFFFF;
    --gray-100:   #F5F5F5;
    --gray-200:   #E6E6E6;
    --gray-400:   #9E9E9E;
    --gray-600:   #5C5C5C;
    --transition: 0.16s ease;
}


/* ─── 2. RESET & BASE ────────────────────────────────────────────────────── */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: 'Roboto Condensed', sans-serif;
    background: #FFFFFF;
    color: var(--black);
    display: flex;
    justify-content: center;
    align-items: flex-start;
    min-height: -webkit-fill-available;
    min-height: 100dvh;
    padding-top:    max(20px, env(safe-area-inset-top));
    padding-bottom: max(20px, env(safe-area-inset-bottom));
    padding-left:   max(12px, env(safe-area-inset-left));
    padding-right:  max(12px, env(safe-area-inset-right));
    overscroll-behavior: none;
}


/* ─── 3. LAYOUT PRINCIPAL ────────────────────────────────────────────────── */
#app-container {
    background: var(--white);
    width: 100%;
    max-width: 560px;
    border: 1px solid var(--gray-200);
    position: relative;
    animation: appIn 0.5s ease-out;
}

header {
    text-align: center;
    padding: 22px 52px 18px;
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
}

.logo {
    width: 38px;
    height: auto;
    margin-bottom: 10px;
}

h1 {
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    font-weight: 800;
    margin-bottom: 3px;
    color: var(--black);
}

h1 span {
    color: var(--red);
}

.subtitle {
    font-family: 'Roboto Condensed', sans-serif;
    font-size: 0.65rem;
    color: var(--gray-600);
    text-transform: uppercase;
    letter-spacing: 0.18em;
    font-weight: 400;
}

.controls-wrapper {
    padding: 14px;
}

footer {
    text-align: center;
    padding: 12px 20px;
    border-top: 1px solid var(--gray-200);
}

footer p {
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 0.52rem;
    color: var(--gray-400);
    letter-spacing: 0.2em;
    text-transform: uppercase;
}


/* ─── 4. COMPONENTES ─────────────────────────────────────────────────────── */

/* Settings */
#settings-wrap {
    position: absolute;
    top: 14px;
    right: 14px;
    z-index: 300;
}

.btn-settings {
    width: 32px;
    height: 32px;
    border: none;
    background: transparent;
    color: var(--red);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    padding: 0;
}

.btn-settings:hover,
.btn-settings.active {
    color: var(--red-dark);
}

.settings-panel {
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    background: var(--white);
    border: 1px solid var(--black);
    box-shadow: 4px 4px 0 var(--black);
    padding: 12px 14px;
    min-width: 148px;
    z-index: 200;
}

.settings-panel:not([hidden]) {
    animation: panelIn 0.12s ease-out;
}

.settings-label {
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 0.58rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--gray-600);
    margin-bottom: 8px;
}

.settings-divider {
    height: 1px;
    background: var(--gray-200);
    margin: 10px 0;
}

.lang-options {
    display: flex;
    gap: 4px;
}

/* Mode Selector */
.mode-selector {
    display: flex;
    gap: 6px;
    margin-bottom: 12px;
}

/* Canvas */
.canvas-container {
    background: #EBEBEB;
    position: relative;
    overflow: hidden;
    line-height: 0;
    margin-bottom: 10px;
    border: 1px solid var(--gray-200);
    touch-action: none;
    user-select: none;
    -webkit-user-select: none;
    -webkit-touch-callout: none;
    transition: opacity 0.3s ease;
}

.canvas-container.img-loading {
    opacity: 0;
}

.canvas-inner {
    position: relative;
    width: 100%;
    transform-origin: top left;
    will-change: transform;
}

#studio-img {
    width: 100%;
    display: block;
    user-select: none;
    -webkit-user-drag: none;
}

canvas {
    position: absolute;
    top: 0;
    left: 0;
    cursor: none;
    width: 100%;
    height: 100%;
    user-select: none;
    -webkit-user-select: none;
}

.btn-reset-zoom {
    position: absolute;
    top: 8px;
    right: 8px;
    z-index: 10;
    padding: 5px 10px;
    background: rgba(0, 0, 0, 0.72);
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.2);
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 0.6rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    cursor: pointer;
    transition: background var(--transition);
}

.btn-reset-zoom:hover {
    background: rgba(0, 0, 0, 0.9);
}

/* Tools Bar */
.tools-bar {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 10px;
}

.color-wrapper {
    position: relative;
    width: 42px;
    height: 42px;
    overflow: hidden;
    border: 2px solid var(--black);
    cursor: pointer;
    margin-left: auto;
}

input[type="color"] {
    -webkit-appearance: none;
    border: none;
    width: 150%;
    height: 150%;
    position: absolute;
    top: -25%;
    left: -25%;
    cursor: pointer;
    background: none;
}

/* Sliders */
.sliders-panel {
    display: flex;
    gap: 14px;
    margin-bottom: 10px;
    padding: 10px 12px;
    background: var(--gray-100);
    border-top: 1px solid var(--gray-200);
    border-bottom: 1px solid var(--gray-200);
}

.slider-group {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 7px;
    position: relative;
}

.slider-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
}

.slider-header label {
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 0.6rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--gray-600);
}

.slider-val {
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 0.65rem;
    font-weight: 700;
    color: var(--black);
    min-width: 28px;
    text-align: right;
}

input[type="range"] {
    -webkit-appearance: none;
    width: 100%;
    height: 2px;
    background: var(--gray-200);
    outline: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 12px;
    height: 12px;
    background: var(--black);
    cursor: pointer;
    border: 2px solid var(--white);
    box-shadow: 0 0 0 1px var(--black);
}

/* Tooltip que aparece al arrastrar el slider */
.slider-tooltip {
    position: absolute;
    bottom: calc(100% + 8px);
    transform: translateX(-50%);
    background: var(--black);
    color: var(--white);
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 0.6rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    padding: 3px 7px;
    white-space: nowrap;
    pointer-events: none;
    z-index: 10;
    opacity: 0;
    transition: opacity 0.12s ease;
}

.slider-tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 4px solid transparent;
    border-top-color: var(--black);
}

.slider-tooltip.visible {
    opacity: 1;
}

/* Actions */
.actions-row {
    display: flex;
    gap: 6px;
    margin-bottom: 8px;
}

/* Crop Modal */
#crop-modal {
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: #111;
    display: flex;
    flex-direction: column;
    overscroll-behavior: none;
}

#crop-modal[hidden] {
    display: none;
}

.crop-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 16px;
    background: #000;
    border-bottom: 1px solid #2a2a2a;
    flex-shrink: 0;
}

.crop-modal-title {
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: #fff;
}

.crop-modal-btns {
    display: flex;
    gap: 8px;
}

.crop-btn-secondary {
    padding: 8px 16px;
    background: transparent;
    border: 1px solid #3a3a3a;
    color: #888;
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    cursor: pointer;
    transition: var(--transition);
}

.crop-btn-secondary:hover {
    border-color: #666;
    color: #ccc;
}

.crop-btn-apply {
    padding: 8px 20px;
    background: var(--red);
    border: none;
    color: #fff;
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    cursor: pointer;
    transition: var(--transition);
}

.crop-btn-apply:hover {
    background: var(--red-dark);
}

.crop-viewport-wrap {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    min-height: 0;
    padding: 16px;
}

#crop-viewport {
    position: relative;
    overflow: hidden;
    border: 2px solid var(--red);
    flex-shrink: 0;
    touch-action: none;
    user-select: none;
    -webkit-user-select: none;
    cursor: grab;
}

#crop-viewport:active {
    cursor: grabbing;
}

#crop-preview-img {
    position: absolute;
    top: 50%;
    left: 50%;
    transform-origin: center center;
    pointer-events: none;
    user-select: none;
    -webkit-user-drag: none;
    max-width: none;
    display: block;
}

.crop-bottom {
    padding: 14px 20px 20px;
    background: #000;
    border-top: 1px solid #2a2a2a;
    flex-shrink: 0;
}

.crop-zoom-row {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 10px;
}

.crop-zoom-icon {
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 1.2rem;
    color: #555;
    flex-shrink: 0;
    line-height: 1;
    width: 16px;
    text-align: center;
}

#crop-zoom-slider {
    flex: 1;
    background: #2a2a2a;
}

#crop-zoom-slider::-webkit-slider-thumb {
    background: var(--red);
    border-color: #111;
    box-shadow: 0 0 0 1px var(--red);
}

.crop-hint {
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 0.55rem;
    color: #3a3a3a;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    text-align: center;
}

/* Offline Banner */
#offline-banner {
    position: fixed;
    bottom: max(12px, env(safe-area-inset-bottom));
    left: 50%;
    transform: translateX(-50%);
    background: #1a1a1a;
    color: #fff;
    padding: 7px 20px;
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 0.6rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    z-index: 9998;
    border: 1px solid #444;
    white-space: nowrap;
    pointer-events: none;
}

/* Install Banner */
#install-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background: #000;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 12px 16px;
    padding-bottom: max(12px, env(safe-area-inset-bottom));
    z-index: 9997;
    border-top: 1px solid #2a2a2a;
    animation: installSlideUp 0.3s ease forwards;
}

#install-banner.install-banner-out {
    animation: installSlideDown 0.25s ease forwards;
}

.install-banner-text {
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 0.68rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: #ccc;
    flex: 1;
    line-height: 1.3;
}

.install-banner-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.install-banner-close {
    width: 28px;
    height: 28px;
    background: transparent;
    border: 1px solid #333;
    color: #666;
    font-size: 1rem;
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    flex-shrink: 0;
}

.install-banner-close:hover {
    border-color: #666;
    color: #ccc;
}

/* Toast */
.fx-toast {
    position: fixed;
    bottom: max(28px, calc(env(safe-area-inset-bottom) + 16px));
    left: 50%;
    transform: translateX(-50%) translateY(8px);
    background: #111;
    color: #fff;
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    padding: 9px 20px;
    border: 1px solid #333;
    white-space: nowrap;
    z-index: 10000;
    opacity: 0;
    transition: opacity 0.2s ease, transform 0.2s ease;
    pointer-events: none;
}

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

.fx-toast--error {
    background: #8b0000;
    border-color: #c00;
    max-width: 320px;
    white-space: normal;
    text-align: center;
    line-height: 1.4;
}


/* ─── 5. BOTONES ─────────────────────────────────────────────────────────── */

/* Modo / plantilla */
.btn-mode {
    flex: 1;
    padding: 10px 6px;
    border: 1px solid var(--gray-200);
    background: var(--white);
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    cursor: pointer;
    transition: var(--transition);
    color: var(--gray-600);
}

.btn-mode.active {
    background: var(--black);
    color: var(--white);
    border-color: var(--black);
}

.btn-mode:hover:not(.active) {
    background: var(--gray-100);
    border-color: var(--black);
    color: var(--black);
}

/* Upload */
.upload-label {
    flex: 1;
    background: var(--red);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px 6px;
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid var(--red);
}

.upload-label:hover {
    background: var(--red-dark);
    border-color: var(--red-dark);
}

/* Herramientas de dibujo */
.btn-tool {
    width: 42px;
    height: 42px;
    border: 1px solid var(--gray-200);
    background: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    color: var(--black);
    flex-shrink: 0;
}

.btn-tool.active {
    background: var(--black);
    color: var(--white);
    border-color: var(--black);
}

.btn-tool:hover:not(.active) {
    background: var(--gray-100);
    border-color: var(--black);
}

/* El botón de navegación/zoom usa azul para diferenciarse de las herramientas de dibujo */
#btn-pan-mode.active {
    background: #2c5282;
    color: #fff;
    border-color: #2c5282;
}

/* Guardar / descargar */
.btn-save {
    width: 100%;
    height: 50px;
    background: var(--red);
    color: var(--white);
    border: none;
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    cursor: pointer;
    transition: background 0.2s ease, box-shadow 0.2s ease;
}

.btn-save:active {
    background: #870408;
}

/* Secundarios (undo, reset) */
.btn-secondary {
    flex: 1;
    height: 40px;
    background: var(--white);
    border: 1px solid var(--gray-200);
    color: var(--black);
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    cursor: pointer;
    transition: var(--transition);
}

.btn-secondary:hover {
    background: var(--gray-100);
    border-color: var(--black);
}

.btn-secondary.danger {
    color: var(--red);
    border-color: rgba(214, 7, 15, 0.25);
}

.btn-secondary.danger:hover {
    background: rgba(214, 7, 15, 0.04);
    border-color: var(--red);
}

/* Instalar PWA */
.install-banner-btn {
    padding: 7px 16px;
    background: var(--red);
    border: none;
    color: #fff;
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    cursor: pointer;
    transition: var(--transition);
}

.install-banner-btn:hover {
    background: var(--red-dark);
}

/* Idioma y Tema (settings panel) */
.btn-lang-opt,
.btn-theme-opt {
    flex: 1;
    padding: 7px 0;
    border: 1px solid var(--gray-200);
    background: var(--white);
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    cursor: pointer;
    transition: var(--transition);
    color: var(--gray-600);
}

.btn-lang-opt:hover:not(.active),
.btn-theme-opt:hover:not(.active) {
    background: var(--gray-100);
    color: var(--black);
    border-color: var(--black);
}

.btn-lang-opt.active,
.btn-theme-opt.active {
    background: var(--black);
    color: var(--white);
    border-color: var(--black);
}


/* ─── 6. ANIMACIONES ─────────────────────────────────────────────────────── */
@keyframes appIn {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}

@keyframes panelIn {
    from { opacity: 0; transform: translateY(-4px); }
    to   { opacity: 1; transform: translateY(0); }
}

@keyframes installSlideUp {
    from { transform: translateY(100%); opacity: 0; }
    to   { transform: translateY(0);    opacity: 1; }
}

@keyframes installSlideDown {
    from { transform: translateY(0);    opacity: 1; }
    to   { transform: translateY(100%); opacity: 0; }
}


/* ─── 7. MEDIA QUERIES ───────────────────────────────────────────────────── */

/* Hover gradient solo en dispositivos con puntero fino (no táctil) */
@media (hover: hover) {
    .btn-save:hover {
        background: linear-gradient(135deg, #1a1a1a 0%, #000 100%);
        box-shadow: inset 0 0 0 2px var(--red);
    }
}

/* Modo oscuro manual (activado desde ajustes, guardado en localStorage) */
html[data-theme="dark"] {
    color-scheme: dark;
    --black:    #FFFFFF;
    --white:    #0f0f0f;
    --gray-100: #1a1a1a;
    --gray-200: #2e2e2e;
    --gray-400: #666666;
    --gray-600: #999999;
}

html[data-theme="dark"] body           { background: #080808; }
html[data-theme="dark"] #app-container { border-color: #2a2a2a; }
html[data-theme="dark"] footer         { border-top-color: #2a2a2a; }

html[data-theme="dark"] .settings-panel {
    box-shadow: 4px 4px 0 #444;
}

html[data-theme="dark"] .canvas-container {
    background: #1a1a1a;
    border-color: #2e2e2e;
}

html[data-theme="dark"] .sliders-panel {
    background: #161616;
}

html[data-theme="dark"] .slider-tooltip {
    background: #e0e0e0;
    color: #0f0f0f;
}

html[data-theme="dark"] .slider-tooltip::after {
    border-top-color: #e0e0e0;
}

html[data-theme="dark"] .btn-reset-zoom {
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.15);
}

html[data-theme="dark"] .btn-reset-zoom:hover {
    background: rgba(255, 255, 255, 0.22);
}

html[data-theme="dark"] #btn-pan-mode.active {
    background: #1d4ed8;
    border-color: #1d4ed8;
}

html[data-theme="dark"] .fx-toast {
    background: #e8e8e8;
    color: #000;
    border-color: #ccc;
}