/* ==========================================================================
   SOLVITU COTIZADOR — Design System: "Flat Modern SaaS Dashboard"
   Estética limpia, superficies blancas/grises, cero sombras y acento púrpura
   ========================================================================== */

:root {
    /* Paleta de Colores Flat SaaS */
    --bg-primary: #F3F4F7;
    --bg-secondary: #ECECEC;
    --bg-card: #FFFFFF;
    --bg-card-subtle: #F5F5F5;
    --bg-soft-purple: #DCCEFF;
    
    /* Texto */
    --text-primary: #111111;
    --text-secondary: #666666;
    --text-light: #FFFFFF;
    --text-muted: #888888;
    --text-main: #111111;

    /* Acentos */
    --accent-purple: #6C35FF;
    --accent-violet: #7B3CFF;
    --accent-mint: #35F2B2;

    /* Bordes y Neutros */
    --border-color: #ECECEC;
    --border-subtle: #D9D9D9;
    --border-dark: #BFBFBF;

    /* Radios */
    --radius-sm: 14px;
    --radius-md: 24px;
    --radius-lg: 36px;

    /* Tipografías */
    --font-heading: 'Plus Jakarta Sans', -apple-system, sans-serif;
    --font-body: 'Inter', -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    /* Transición */
    --transition: all 0.2s ease-in-out;

    /* Estados */
    --success: #35F2B2;
    --danger: #FF3B30;
}

/* Regla Global Estricta: CERO SOMBRAS */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    box-shadow: none !important;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 14px;
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    transition: var(--transition);
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.25;
}

/* ==========================================================================
   PANTALLA DE BLOQUEO (LOCK SCREEN)
   ========================================================================== */

.lock-screen-overlay {
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    opacity: 1;
    visibility: visible;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.lock-screen-overlay.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.lock-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 3rem 2.5rem;
    width: 100%;
    max-width: 440px;
    text-align: center;
}

.lock-brand-logo {
    width: 68px;
    height: 68px;
    margin: 0 auto 1.5rem;
    background: var(--accent-purple);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.8rem;
}

.lock-title {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.lock-subtitle {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 2rem;
}

.lock-input-group {
    position: relative;
    margin-bottom: 1.25rem;
}

.lock-input-group input {
    width: 100%;
    padding: 1rem 1rem 1rem 3rem;
    background: var(--bg-card-subtle);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 1rem;
    font-family: var(--font-body);
    outline: none;
    transition: var(--transition);
}

.lock-input-group input:focus {
    background: var(--bg-card);
    border-color: var(--accent-purple);
}

.lock-input-icon {
    position: absolute;
    left: 1.15rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--accent-purple);
}

.lock-remember {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: 0.6rem;
    margin-bottom: 1.75rem;
    color: var(--text-secondary);
    font-size: 0.85rem;
    cursor: pointer;
}

.lock-remember input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--accent-purple);
    cursor: pointer;
}

.lock-error-msg {
    color: var(--danger);
    font-size: 0.85rem;
    margin-top: 1rem;
    display: none;
    font-weight: 600;
}

.lock-error-msg.visible {
    display: block;
}

/* ==========================================================================
   HEADER PRINCIPAL DASHBOARD
   ========================================================================== */

.app-header {
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 1.15rem 2rem;
}

.header-container {
    max-width: 1600px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.brand-wrapper {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    text-decoration: none;
}

.brand-icon {
    width: 42px;
    height: 42px;
    background: var(--accent-purple);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 800;
    font-size: 1.2rem;
}

.brand-title {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.3px;
}

.brand-badge {
    background: var(--bg-soft-purple);
    color: var(--accent-purple);
    font-size: 0.72rem;
    font-weight: 700;
    padding: 0.35rem 0.75rem;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 0.85rem;
}

/* ==========================================================================
   LAYOUT PRINCIPAL SAAS DASHBOARD
   ========================================================================== */

.app-container {
    max-width: 1600px;
    margin: 0 auto;
    padding: 2rem;
    display: grid;
    grid-template-columns: 1fr 560px;
    gap: 2rem;
}

@media (max-width: 1200px) {
    .app-container {
        grid-template-columns: 1fr;
    }
}

/* Paneles de Tarjetas Planas */
.card-panel {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.75rem;
    margin-bottom: 1.75rem;
    transition: var(--transition);
}

.card-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.6rem;
    margin-bottom: 1.25rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border-color);
}

.card-title i {
    color: var(--accent-purple);
    font-size: 1.15rem;
}

/* Grid y Formulario */
.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
    gap: 1.15rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

label {
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

input, select, textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--bg-card-subtle);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.92rem;
    outline: none;
    transition: var(--transition);
}

input:focus, select:focus, textarea:focus {
    background: var(--bg-card);
    border-color: var(--accent-purple);
}

select {
    cursor: pointer;
}

/* Presets Rápidos de Servicios */
.presets-bar {
    margin-bottom: 1.5rem;
}

.preset-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin-top: 0.6rem;
}

.btn-preset {
    background: var(--bg-card-subtle);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.5rem 0.9rem;
    border-radius: 20px;
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}

.btn-preset i {
    color: var(--accent-purple);
}

.btn-preset:hover {
    background: var(--bg-soft-purple);
    border-color: var(--accent-purple);
    color: var(--accent-purple);
}

/* Lista de Ítems */
.items-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 1.25rem;
}

.item-card-row {
    background: var(--bg-card-subtle);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    transition: var(--transition);
}

.item-inputs-grid {
    display: grid;
    grid-template-columns: 100px 1fr 110px 44px;
    gap: 1rem;
    align-items: flex-end;
}

@media (max-width: 768px) {
    .item-inputs-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.item-card-row input,
.item-card-row textarea {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
}

.item-total-display {
    font-family: var(--font-mono);
    font-weight: 700;
    color: var(--accent-purple);
    font-size: 1rem;
    text-align: right;
    padding-top: 0.75rem;
}

/* Selector de Impuestos */
.tax-selector-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 0.85rem;
    margin-top: 0.6rem;
}

.tax-option-card {
    background: var(--bg-card-subtle);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 0.85rem 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.6rem;
    transition: var(--transition);
}

.tax-option-card:hover {
    border-color: var(--accent-purple);
}

.tax-option-card.active {
    background: var(--bg-soft-purple);
    border-color: var(--accent-purple);
}

.tax-option-card.active strong {
    color: var(--accent-purple);
}

.tax-option-card input[type="radio"] {
    width: 18px;
    height: 18px;
    accent-color: var(--accent-purple);
    cursor: pointer;
}

/* Resumen de Totales */
.totals-summary-box {
    background: var(--bg-card-subtle);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    font-family: var(--font-mono);
}

.summary-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.summary-row strong {
    color: var(--text-primary);
}

.summary-row.grand-total {
    font-size: 1.4rem;
    font-weight: 800;
    border-top: 2px dashed var(--border-subtle);
    padding-top: 0.85rem;
    margin-top: 0.25rem;
}

.summary-row.grand-total strong {
    color: var(--accent-purple);
    background: var(--bg-soft-purple);
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
}

/* BOTONES PLANOS */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    padding: 0.75rem 1.4rem;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 0.9rem;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

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

.btn-primary:hover {
    background: var(--accent-violet);
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--bg-card-subtle);
    border: 1px solid var(--border-subtle);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: var(--bg-secondary);
    border-color: var(--text-secondary);
}

.btn-success {
    background: var(--accent-mint);
    color: #111111;
    font-weight: 800;
}

.btn-success:hover {
    background: #23e2a2;
    transform: translateY(-1px);
}

.btn-danger {
    background: var(--bg-card-subtle);
    border: 1px solid var(--border-subtle);
    color: var(--danger);
}

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

.btn-icon {
    width: 42px;
    height: 42px;
    padding: 0;
    border-radius: 50%;
}

/* ==========================================================================
   VISTA PREVIA DE DOCUMENTO
   ========================================================================== */

.preview-wrapper {
    position: sticky;
    top: 6rem;
}

.preview-actions-bar {
    display: flex;
    gap: 0.6rem;
    margin-bottom: 1rem;
}

.doc-paper {
    background: #FFFFFF;
    color: #111111;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 3rem 2.25rem;
    font-family: var(--font-body);
    font-size: 13px;
    line-height: 1.65;
}

.doc-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    border-bottom: 3px solid var(--accent-purple);
    padding-bottom: 1.5rem;
    margin-bottom: 1.75rem;
}

.doc-company-brand {
    font-family: var(--font-heading);
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--accent-purple);
}

.doc-company-sub {
    font-size: 0.82rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.doc-meta-box {
    text-align: right;
}

.doc-folio {
    font-family: var(--font-mono);
    font-weight: 800;
    font-size: 1.3rem;
    color: var(--text-primary);
}

.doc-client-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
    background: var(--bg-card-subtle);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 1.25rem;
    margin-bottom: 1.75rem;
}

.doc-section-title {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.6px;
    color: var(--accent-purple);
    margin-bottom: 0.35rem;
}

.doc-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 1.75rem;
    table-layout: auto;
}

.doc-table th {
    background: var(--bg-card-subtle);
    color: var(--text-primary);
    font-family: var(--font-heading);
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 0.85rem 1rem;
    border-bottom: 2px solid var(--border-subtle);
}

.doc-table th.col-total {
    width: 180px;
    text-align: right;
}

.doc-table td {
    padding: 0.95rem 1rem;
    border-bottom: 1px solid var(--border-color);
    vertical-align: top;
    font-size: 0.9rem;
}

.doc-table td.text-center {
    text-align: center;
}

.doc-table td.text-right {
    text-align: right;
    white-space: nowrap;
}

/* Tabla de Totales Ensanchada */
.doc-totals-table {
    width: 360px;
    margin-left: auto;
    margin-bottom: 1.75rem;
    border-collapse: collapse;
}

.doc-totals-table td {
    padding: 0.55rem 0.85rem;
    font-size: 0.92rem;
    color: var(--text-secondary);
}

.doc-totals-table .total-label {
    text-align: right;
    font-weight: 600;
}

.doc-totals-table .total-value {
    text-align: right;
    font-family: var(--font-mono);
    font-weight: 700;
    white-space: nowrap;
    width: 165px;
}

.doc-totals-table .doc-total-final {
    font-family: var(--font-mono);
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--accent-purple);
    border-top: 2px solid var(--text-primary);
}

.doc-totals-table .doc-total-final td {
    padding-top: 0.75rem;
    color: var(--accent-purple);
}

.doc-terms {
    background: var(--bg-soft-purple);
    border-left: 4px solid var(--accent-purple);
    padding: 1rem 1.25rem;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    font-size: 0.82rem;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
}

.doc-bank-box {
    background: var(--bg-card-subtle);
    border: 1px dashed var(--border-subtle);
    border-radius: var(--radius-sm);
    padding: 1rem 1.25rem;
    font-size: 0.82rem;
    color: var(--text-primary);
}

/* MODALES PLANOS */
.modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 1000;
    background: rgba(17, 17, 17, 0.4);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 720px;
    max-height: 85vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.modal-header {
    padding: 1.25rem 1.75rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-body {
    padding: 1.75rem;
    overflow-y: auto;
}

.modal-footer {
    padding: 1.25rem 1.75rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 0.85rem;
}

/* ==========================================================================
   ESTILOS DE IMPRESIÓN PDF (@media print)
   ========================================================================== */

@media print {
    body {
        background: white !important;
        color: black !important;
    }

    .app-header,
    .lock-screen-overlay,
    .preview-actions-bar,
    .app-container > :first-child,
    .modal-overlay {
        display: none !important;
    }

    .app-container {
        display: block !important;
        padding: 0 !important;
        margin: 0 !important;
        max-width: 100% !important;
    }

    .preview-wrapper {
        position: static !important;
    }

    .doc-paper {
        border: none !important;
        padding: 0 !important;
        border-radius: 0 !important;
    }
}