/* ============================================================
   QR Generator Plugin — qr-generator.css
   Versión: 1.0.0
   Autor: Tu Nombre
   ============================================================ */

/* ── Variables de diseño ── */
.qrg-wrapper {
    --qrg-primary:       #2563eb;
    --qrg-primary-dark:  #1d4ed8;
    --qrg-primary-light: #dbeafe;
    --qrg-accent:        #7c3aed;
    --qrg-success:       #059669;
    --qrg-warning:       #d97706;
    --qrg-danger:        #dc2626;

    --qrg-bg:            #f8fafc;
    --qrg-surface:       #ffffff;
    --qrg-surface-2:     #f1f5f9;
    --qrg-border:        #e2e8f0;
    --qrg-border-focus:  #93c5fd;

    --qrg-text-primary:  #0f172a;
    --qrg-text-secondary:#475569;
    --qrg-text-muted:    #94a3b8;
    --qrg-text-on-dark:  #ffffff;

    --qrg-radius-sm:     6px;
    --qrg-radius:        10px;
    --qrg-radius-lg:     16px;
    --qrg-radius-xl:     24px;

    --qrg-shadow-sm:     0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
    --qrg-shadow:        0 4px 16px rgba(0,0,0,.08), 0 1px 4px rgba(0,0,0,.04);
    --qrg-shadow-lg:     0 12px 40px rgba(0,0,0,.12), 0 4px 12px rgba(0,0,0,.06);

    --qrg-transition:    .22s cubic-bezier(.4,0,.2,1);

    font-family: 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    color: var(--qrg-text-primary);
    box-sizing: border-box;
}

/* ── Reset parcial ── */
.qrg-wrapper *,
.qrg-wrapper *::before,
.qrg-wrapper *::after {
    box-sizing: inherit;
}

/* ════════════════════════════════
   HERO
   ════════════════════════════════ */
.qrg-hero {
    text-align: center;
    padding: 40px 20px 28px;
    background: linear-gradient(135deg, #1e40af 0%, #7c3aed 100%);
    border-radius: var(--qrg-radius-xl);
    margin-bottom: 28px;
    position: relative;
    overflow: hidden;
}

.qrg-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.04'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.qrg-hero__title {
    margin: 0 0 8px;
    font-size: clamp(1.4rem, 3vw, 2rem);
    font-weight: 700;
    color: #ffffff;
    line-height: 1.2;
    position: relative;
    text-shadow: 0 2px 8px rgba(0,0,0,.2);
}

.qrg-hero__sub {
    margin: 0;
    font-size: .95rem;
    color: rgba(255,255,255,.82);
    position: relative;
}

/* ════════════════════════════════
   LAYOUT PRINCIPAL
   ════════════════════════════════ */
.qrg-layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 24px;
    align-items: start;
}

@media (max-width: 820px) {
    .qrg-layout {
        grid-template-columns: 1fr;
    }
}

/* ════════════════════════════════
   PANELES
   ════════════════════════════════ */
.qrg-panel {
    background: var(--qrg-surface);
    border: 1px solid var(--qrg-border);
    border-radius: var(--qrg-radius-lg);
    padding: 24px;
    box-shadow: var(--qrg-shadow);
}

/* ════════════════════════════════
   TABS
   ════════════════════════════════ */
.qrg-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--qrg-border);
}

.qrg-tab {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3px;
    padding: 8px 12px;
    border: 1.5px solid var(--qrg-border);
    border-radius: var(--qrg-radius);
    background: var(--qrg-surface-2);
    color: var(--qrg-text-secondary);
    font-size: .75rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--qrg-transition);
    white-space: nowrap;
    line-height: 1;
}

.qrg-tab:hover {
    border-color: var(--qrg-primary);
    color: var(--qrg-primary);
    background: var(--qrg-primary-light);
    transform: translateY(-1px);
    box-shadow: var(--qrg-shadow-sm);
}

.qrg-tab--active {
    border-color: var(--qrg-primary);
    background: var(--qrg-primary);
    color: var(--qrg-text-on-dark) !important;
    box-shadow: 0 2px 8px rgba(37,99,235,.35);
}

.qrg-tab--active:hover {
    background: var(--qrg-primary-dark);
    transform: translateY(-1px);
}

.qrg-tab__icon {
    font-size: 1rem;
}

.qrg-tab__label {
    font-size: .7rem;
    letter-spacing: .01em;
}

/* ════════════════════════════════
   PANELES DE CONTENIDO (PANES)
   ════════════════════════════════ */
.qrg-pane {
    display: none;
    animation: qrg-fade-in .25s ease;
}

.qrg-pane--active {
    display: block;
}

@keyframes qrg-fade-in {
    from { opacity: 0; transform: translateY(6px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ════════════════════════════════
   FORMULARIO
   ════════════════════════════════ */
.qrg-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.qrg-field {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.qrg-field--full {
    grid-column: 1 / -1;
}

.qrg-label {
    font-size: .78rem;
    font-weight: 600;
    color: var(--qrg-text-secondary);
    letter-spacing: .02em;
    text-transform: uppercase;
}

.qrg-input,
.qrg-textarea,
.qrg-select {
    width: 100%;
    padding: 10px 14px;
    border: 1.5px solid var(--qrg-border);
    border-radius: var(--qrg-radius);
    background: var(--qrg-surface);
    color: var(--qrg-text-primary);
    font-size: .9rem;
    font-family: inherit;
    transition: border-color var(--qrg-transition), box-shadow var(--qrg-transition);
    outline: none;
    -webkit-appearance: none;
}

.qrg-input:focus,
.qrg-textarea:focus,
.qrg-select:focus {
    border-color: var(--qrg-primary);
    box-shadow: 0 0 0 3px rgba(37,99,235,.15);
}

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

.qrg-textarea {
    resize: vertical;
    min-height: 90px;
}

.qrg-select {
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%2394a3b8' d='M1 1l5 5 5-5'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

/* ════════════════════════════════
   OPCIONES DE PERSONALIZACIÓN
   ════════════════════════════════ */
.qrg-options {
    margin-top: 20px;
    padding: 16px;
    background: var(--qrg-surface-2);
    border-radius: var(--qrg-radius);
    border: 1px solid var(--qrg-border);
}

.qrg-options__title {
    margin: 0 0 14px;
    font-size: .85rem;
    font-weight: 600;
    color: var(--qrg-text-secondary);
    display: flex;
    align-items: center;
    gap: 6px;
}

.qrg-options__row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

@media (max-width: 520px) {
    .qrg-options__row {
        grid-template-columns: 1fr;
    }
    .qrg-grid {
        grid-template-columns: 1fr;
    }
}

.qrg-color-field,
.qrg-size-field,
.qrg-ec-field {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.qrg-color-wrap {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 6px 10px;
    border: 1.5px solid var(--qrg-border);
    border-radius: var(--qrg-radius);
    background: var(--qrg-surface);
    cursor: pointer;
    transition: border-color var(--qrg-transition);
}

.qrg-color-wrap:hover {
    border-color: var(--qrg-primary);
}

.qrg-color-picker {
    width: 32px;
    height: 32px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    padding: 0;
    background: none;
    flex-shrink: 0;
}

.qrg-color-picker::-webkit-color-swatch-wrapper { padding: 0; }
.qrg-color-picker::-webkit-color-swatch         { border: none; border-radius: 4px; }
.qrg-color-picker::-moz-color-swatch            { border: none; border-radius: 4px; }

.qrg-color-hex {
    font-size: .8rem;
    font-family: 'Courier New', monospace;
    color: var(--qrg-text-secondary);
    font-weight: 600;
}

/* ════════════════════════════════
   BOTONES
   ════════════════════════════════ */
.qrg-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 20px;
    border: none;
    border-radius: var(--qrg-radius);
    font-size: .9rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: all var(--qrg-transition);
    text-decoration: none;
    white-space: nowrap;
}

.qrg-btn--generate {
    width: 100%;
    margin-top: 20px;
    padding: 14px 24px;
    font-size: 1rem;
    background: linear-gradient(135deg, var(--qrg-primary) 0%, var(--qrg-accent) 100%);
    color: var(--qrg-text-on-dark);
    border-radius: var(--qrg-radius);
    box-shadow: 0 4px 14px rgba(37,99,235,.35);
    position: relative;
    overflow: hidden;
}

.qrg-btn--generate::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(255,255,255,0);
    transition: background var(--qrg-transition);
}

.qrg-btn--generate:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37,99,235,.45);
}

.qrg-btn--generate:hover::after {
    background: rgba(255,255,255,.06);
}

.qrg-btn--generate:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(37,99,235,.3);
}

.qrg-btn--generate.qrg-btn--loading {
    pointer-events: none;
    opacity: .7;
}

.qrg-btn--generate.qrg-btn--loading .qrg-btn__icon {
    animation: qrg-spin 1s linear infinite;
}

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

.qrg-btn--download {
    flex: 1;
    background: var(--qrg-success);
    color: #ffffff;
    box-shadow: 0 2px 8px rgba(5,150,105,.3);
}

.qrg-btn--download:hover {
    background: #047857;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(5,150,105,.4);
}

.qrg-btn--svg {
    background: var(--qrg-surface-2);
    color: var(--qrg-text-secondary);
    border: 1.5px solid var(--qrg-border);
    padding: 12px 16px;
}

.qrg-btn--svg:hover {
    background: var(--qrg-border);
    color: var(--qrg-text-primary);
    transform: translateY(-1px);
}

.qrg-btn--copy {
    background: var(--qrg-surface-2);
    color: var(--qrg-text-secondary);
    border: 1.5px solid var(--qrg-border);
    padding: 12px 16px;
}

.qrg-btn--copy:hover {
    background: var(--qrg-border);
    color: var(--qrg-text-primary);
    transform: translateY(-1px);
}

.qrg-btn--copy.qrg-btn--copied {
    background: var(--qrg-success);
    color: #ffffff;
    border-color: var(--qrg-success);
}

/* ════════════════════════════════
   PANEL DE PREVIEW
   ════════════════════════════════ */
.qrg-panel--preview {
    position: sticky;
    top: 20px;
}

.qrg-preview-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.qrg-qr-container {
    width: 100%;
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--qrg-surface-2);
    border-radius: var(--qrg-radius);
    border: 2px dashed var(--qrg-border);
    padding: 20px;
    transition: border-color var(--qrg-transition), background var(--qrg-transition);
    overflow: hidden;
}

.qrg-qr-container.qrg-qr-container--has-qr {
    background: #ffffff;
    border-style: solid;
    border-color: var(--qrg-border);
    padding: 16px;
}

/* Placeholder SVG */
.qrg-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    color: var(--qrg-text-muted);
    text-align: center;
}

.qrg-placeholder svg {
    width: 60px;
    height: 60px;
    opacity: .4;
}

.qrg-placeholder p {
    margin: 0;
    font-size: .85rem;
    line-height: 1.4;
    max-width: 160px;
}

/* QR generado */
#qrg-canvas-wrap {
    display: flex;
    align-items: center;
    justify-content: center;
    animation: qrg-pop-in .35s cubic-bezier(.34,1.56,.64,1);
}

#qrg-canvas-wrap canvas,
#qrg-canvas-wrap img {
    border-radius: var(--qrg-radius-sm);
    max-width: 100%;
    height: auto;
}

@keyframes qrg-pop-in {
    from { opacity: 0; transform: scale(.85); }
    to   { opacity: 1; transform: scale(1); }
}

/* ── Botones de descarga ── */
.qrg-actions {
    display: flex;
    gap: 8px;
    width: 100%;
    flex-wrap: wrap;
}

.qrg-actions .qrg-btn--download {
    flex: 1 1 100%;
}

.qrg-actions .qrg-btn--svg,
.qrg-actions .qrg-btn--copy {
    flex: 1;
}

/* ── Meta info ── */
.qrg-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    gap: 8px;
    font-size: .75rem;
    color: var(--qrg-text-muted);
}

.qrg-badge {
    display: inline-flex;
    align-items: center;
    padding: 3px 10px;
    background: var(--qrg-primary-light);
    color: var(--qrg-primary);
    border-radius: 999px;
    font-weight: 700;
    font-size: .7rem;
    letter-spacing: .04em;
    text-transform: uppercase;
}

.qrg-chars {
    font-family: 'Courier New', monospace;
}

/* ════════════════════════════════
   AVISO / NOTIFICACIÓN
   ════════════════════════════════ */
.qrg-notice {
    margin-top: 16px;
    padding: 12px 16px;
    border-radius: var(--qrg-radius);
    font-size: .85rem;
    font-weight: 500;
    animation: qrg-fade-in .2s ease;
}

.qrg-notice--error {
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: var(--qrg-danger);
}

.qrg-notice--warning {
    background: #fffbeb;
    border: 1px solid #fde68a;
    color: var(--qrg-warning);
}

.qrg-notice--success {
    background: #ecfdf5;
    border: 1px solid #a7f3d0;
    color: var(--qrg-success);
}

/* ════════════════════════════════
   SCROLLBAR PERSONALIZADA (webkit)
   ════════════════════════════════ */
.qrg-wrapper ::-webkit-scrollbar {
    width: 6px;
}

.qrg-wrapper ::-webkit-scrollbar-track {
    background: transparent;
}

.qrg-wrapper ::-webkit-scrollbar-thumb {
    background: var(--qrg-border);
    border-radius: 3px;
}

/* ════════════════════════════════
   RESPONSIVE
   ════════════════════════════════ */
@media (max-width: 620px) {
    .qrg-panel {
        padding: 16px;
    }

    .qrg-hero {
        padding: 28px 16px 20px;
    }

    .qrg-tabs {
        gap: 4px;
    }

    .qrg-tab {
        padding: 6px 9px;
    }

    .qrg-tab__label {
        font-size: .62rem;
    }

    .qrg-btn--generate {
        padding: 12px 16px;
        font-size: .9rem;
    }
}

@media (max-width: 400px) {
    .qrg-tab__label {
        display: none;
    }

    .qrg-tab__icon {
        font-size: 1.1rem;
    }

    .qrg-tab {
        padding: 8px 10px;
    }
}

/* ════════════════════════════════
   ACCESIBILIDAD
   ════════════════════════════════ */
.qrg-btn:focus-visible,
.qrg-tab:focus-visible,
.qrg-input:focus-visible,
.qrg-textarea:focus-visible,
.qrg-select:focus-visible {
    outline: 2px solid var(--qrg-primary);
    outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
    .qrg-wrapper *,
    .qrg-wrapper *::before,
    .qrg-wrapper *::after {
        animation-duration: .01ms !important;
        transition-duration: .01ms !important;
    }
}