/* IMPORTS */
@import url('https://fonts.googleapis.com/css2?family=Chakra+Petch:wght@400;600;700&family=Lato:wght@300;400;700&display=swap');

:root {
    /* Tipografía */
    --font-family-base: 'Chakra Petch', sans-serif;

    /* Tamaños de fuente */
    --font-size-4xl: 28px;
    --font-size-3xl: 24px;
    --font-size-2xl: 22px;
    --font-size-xl: 20px;
    --font-size-lg: 18px;
    --font-size-md: 16px;
    --font-size-base: 15px;
    --font-size-label: 14px;
    --font-size-sm: 13px;
    --font-size-xs: 12px;

    /* Colores base */
    --color-white: #f8f8f8;
    --color-text-main: #121212;
    --color-text-muted: #2b2b2b;
    --color-text-muted-light: #3f3f3f;

    /* Colores principales */
    --color-primary: #121212;
    --color-primary-alt: #2b2b2b;

    /* Botones y variantes primarias */
    --color-btn-primary: #121212;
    --color-btn-primary-hover: #2b2b2b;

    /* Tonos secundarios */
    --color-btn-secondary: #121212;
    --color-btn-secondary-hover: #2b2b2b;

    /* Fondos */
    --color-bg-soft: #f8f8f8;
    --color-bg-surface: #e4e4e4;

    /* Bordes */
    --color-border-soft: #f8f8f8;

    /* Login */
    --color-login-title: #121212;

    /* Mensajes de error */
    --color-message-error-bg: #f8f8f8;
    --color-message-error-text: #721c24;
    --color-message-error-border: #e4e4e4;

    /* Mensajes de éxito */
    --color-message-success-bg: #f8f8f8;
    --color-message-success-text: #155724;
    --color-message-success-border: #e4e4e4;

    /* Botones de estado */
    --color-btn-success: #28a745;
    --color-btn-success-hover: #218838;
    --color-btn-danger: #dc3545;
    --color-btn-danger-hover: #c82333;

    /* Badges */
    --color-badge-admin-bg: #121212;
    --color-badge-user-bg: #2b2b2b;
    --color-badge-protected-bg: #ffc107;
    --color-badge-protected-text: #2b2b2b;

    /* Gradientes */
    --gradient-body-start: #121212;
    --gradient-body-end: #3f3f3f;
    --gradient-key-success-end: #20c997;

    /* Scrollbar */
    --color-scroll-track: #f8f8f8;
    --color-scroll-thumb: #121212;
    --color-scroll-thumb-hover: #2b2b2b;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-family-base);
    background: linear-gradient(135deg, var(--gradient-body-start) 0%, var(--gradient-body-end) 100%);
    min-height: 100vh;
    color: var(--color-text-main);
}

/* === PÁGINA DE LOGIN === */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

.login-box {
    background: var(--color-bg-surface);
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    width: 100%;
    max-width: 400px;
}

.login-box h1 {
    color: var(--color-login-title);
    margin-bottom: 10px;
    font-size: var(--font-size-4xl);
    text-align: center;
}

.subtitle {
    text-align: center;
    color: var(--color-text-muted);
    margin-bottom: 30px;
}

/* === PÁGINA DE LECTURAS === */
.header {
    background: var(--color-bg-surface);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 20px;
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* === MENÚ NAVEGACIÓN SUPERIOR (HORIZONTAL) === */
.header nav ul {
    list-style: none;
    display: flex;
    gap: 20px;
    margin: 0;
    padding: 0;
}

.header nav li {
    display: block;
}

.header nav a {
    text-decoration: none;
    display: block;
}

.header h1 {
    color: var(--color-primary);
    font-size: var(--font-size-3xl);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 20px;
}

.user-info span {
    color: var(--color-text-muted);
}

.main-container {
    max-width: 1800px;
    margin: 30px auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 2fr 1fr;
    gap: 25px;
    align-items: stretch;
}

/* === ÁREA CENTRAL (PANEL DE REGISTRO) === */
.content-area {
    background: var(--color-bg-surface);
    border-radius: 15px;
    padding: 0px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.action-section {
    text-align: center;
    padding: 40px 0;
}

/* === FORMULARIOS === */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--color-text-main);
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 12px;
    border: 2px solid var(--color-border-soft);
    border-radius: 8px;
    font-size: var(--font-size-base);
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-primary);
}

.lectura-form {
    padding: 30px;
    background: transparent;
    border-radius: 10px;
}

.lectura-form h2 {
    color: var(--color-primary);
    margin-bottom: 20px;
    font-size: var(--font-size-2xl);
}

.form-actions {
    display: flex;
    gap: 10px;
    margin-top: 25px;
}

/* === BOTONES === */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: var(--font-size-base);
    font-family: var(--font-family-base);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.btn-primary {
    font-family: var(--font-family-base);
    background: var(--color-btn-primary);
    color: var(--color-white);
}

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

.btn-secondary {
    font-family: var(--font-family-base);
    background: var(--color-btn-secondary);
    color: var(--color-white);
}

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

.btn-success {
    font-family: var(--font-family-base);
    background: var(--color-btn-success);
    color: var(--color-white);
}

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

.form-actions .btn-success {
    flex: 1;
}

.btn-large {
    font-family: var(--font-family-base);
    padding: 20px 40px;
    font-size: var(--font-size-xl);
}

/* === SIDEBAR === */

.registros-lista {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.registro-item {
    background: var(--color-bg-soft);
    padding: 15px;
    border-radius: 8px;
    border-left: 4px solid var(--color-primary);
    transition: transform 0.2s;
}

.registro-item:hover {
    transform: translateX(5px);
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
}

.registro-codigo {
    font-weight: 700;
    color: var(--color-text-main);
    font-size: var(--font-size-lg);
    margin-bottom: 5px;
}

.registro-cantidad {
    color: var(--color-primary);
    font-weight: 600;
    margin-bottom: 5px;
}

.registro-fecha {
    color: var(--color-text-muted-light);
    font-size: var(--font-size-sm);
}

.loading,
.no-registros {
    text-align: center;
    color: var(--color-text-muted-light);
    padding: 20px;
    font-style: italic;
}

/* === MENSAJES === */
.error-message,
.mensaje {
    padding: 12px;
    border-radius: 8px;
    margin-top: 15px;
    font-weight: 500;
}

.error-message,
.mensaje-error {
    background: var(--color-message-error-bg);
    color: var(--color-message-error-text);
    border: 1px solid var(--color-message-error-border);
}

.mensaje-success {
    background: var(--color-message-success-bg);
    color: var(--color-message-success-text);
    border: 1px solid var(--color-message-success-border);
}

/* === PANEL DE ADMINISTRACIÓN === */
.admin-container {
    max-width: 1400px;
    margin: 30px auto;
    padding: 0 20px;
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.admin-section {
    background: var(--color-bg-surface);
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--color-border-soft);
}

.section-header h2 {
    color: var(--color-primary);
    font-size: var(--font-size-2xl);
    margin: 0;
}

.form-card {
    background: var(--color-bg-soft);
    border: 2px solid var(--color-border-soft);
    border-radius: 10px;
    padding: 25px;
    margin-bottom: 25px;
}

.form-card h3 {
    color: var(--color-primary);
    margin-bottom: 20px;
    font-size: var(--font-size-lg);
}

.data-table {
    overflow-x: auto;
}

.data-table table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th {
    background: var(--color-primary);
    color: var(--color-white);
    padding: 12px;
    text-align: left;
    font-weight: 600;
}

.data-table td {
    padding: 12px;
    border-bottom: 1px solid var(--color-border-soft);
}

.data-table tr:hover {
    background: var(--color-bg-soft);
}

.btn-eliminar {
    background: var(--color-btn-danger);
    color: var(--color-white);
    font-family: var(--font-family-base);
    border: none;
    padding: 6px 12px;
    border-radius: 5px;
    cursor: pointer;
    font-size: var(--font-size-sm);
    transition: background 0.3s;
}

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

.badge-admin {
    background: var(--color-badge-admin-bg);
    color: var(--color-white);
    padding: 4px 10px;
    border-radius: 12px;
    font-size: var(--font-size-xs);
    font-weight: 600;
}

.badge-user {
    background: var(--color-badge-user-bg);
    color: var(--color-white);
    padding: 4px 10px;
    border-radius: 12px;
    font-size: var(--font-size-xs);
    font-weight: 600;
}

.badge-protegido {
    background: var(--color-badge-protected-bg);
    color: var(--color-badge-protected-text);
    padding: 4px 10px;
    border-radius: 12px;
    font-size: var(--font-size-xs);
    font-weight: 600;
}

.no-data {
    text-align: center;
    color: var(--color-text-muted-light);
    padding: 30px;
    font-style: italic;
}

/* === RESPONSIVE === */
@media (max-width: 1200px) {
    .main-container {
        display: grid;
        grid-template-columns: 1fr 1fr;           /* dos columnas iguales */
        grid-template-rows: auto auto;            /* dos filas: principal + log */
        grid-template-areas:
            "contenido panel"
            "log log";
        gap: 25px;
        align-items: stretch;
    }

    /* Introducción de datos en la izquierda */
    .content-area {
        grid-area: contenido;
    }

    /* Pad numérico a la derecha */
    .panel-lateral {
        grid-area: panel;
        position: static;       /* quitamos sticky en pantallas pequeñas */
        top: auto;
    }

    /* Log debajo ocupando todo el ancho */
    .sidebar-izquierda {
        grid-area: log;
        max-height: none;
        position: static;
        top: auto;
        overflow-y: visible;
    }

    /* Cabecera y tablas siguen siendo responsive como antes */
    .header-content {
        flex-direction: row;
        gap: 15px;
        text-align: center;
    }
    
    .user-info {
        flex-direction: row;
        gap: 10px;
    }
    
    .section-header {
        flex-direction: column;
        gap: 15px;
        align-items: flex-start;
    }
    
    .data-table {
        font-size: var(--font-size-label);
    }
}

/* === SIDEBAR IZQUIERDA (LOG - LECTURAS RECIENTES) === */
.sidebar-izquierda {
    background: var(--color-bg-surface);
    border-radius: 15px;
    padding: 25px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    max-height: calc(100vh - 150px);
    overflow-y: auto;
    position: sticky;
    top: 20px;
}

.sidebar-izquierda h2 {
    color: var(--color-primary);
    margin-bottom: 20px;
    font-size: var(--font-size-xl);
    padding-bottom: 10px;
    border-bottom: 2px solid var(--color-border-soft);
}

/* === PANEL LATERAL DERECHO (PANEL DE TECLADO) === */
.panel-lateral {
    display: flex;
    flex-direction: column;
}

.teclados-container {
    background: var(--color-bg-surface);
    border-radius: 15px;
    padding: 25px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    min-height: 550px;
    display: flex;
    flex-direction: column;
}

.teclado-titulo {
    color: var(--color-primary);
    font-size: var(--font-size-md);
    font-weight: 600;
    margin-bottom: 15px;
    text-align: center;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--color-border-soft);
}

/* === PAD NUMÉRICO PARA CANTIDAD === */
.pad-panel {
    width: 100%;
}

.pad-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    margin-bottom: 15px;
}

.pad-controles {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.pad-row {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 8px;
}

.pad-tecla {
    width: 100%;
    padding: 25px;
    background: linear-gradient(135deg, var(--gradient-body-start) 0%, var(--gradient-body-end) 100%);
    color: var(--color-white);
    border: none;
    border-radius: 10px;
    font-family: var(--font-family-base);
    font-size: var(--font-size-4xl);
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s;
    box-shadow: 0 3px 8px rgba(0, 0, 0, 0.2);
    user-select: none;
    min-height: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.pad-tecla:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.3);
}

.pad-tecla:active {
    transform: translateY(0);
    box-shadow: 0 3px 8px rgba(0, 0, 0, 0.2);
}

.pad-especial {
    background: linear-gradient(135deg, var(--color-btn-success) 0%, var(--gradient-key-success-end) 100%);
    font-size: var(--font-size-md);
    padding: 20px;
    min-height: 65px;
}

/* === SCROLL BAR === */
.sidebar-izquierda::-webkit-scrollbar {
    width: 8px;
}

.sidebar-izquierda::-webkit-scrollbar-track {
    background: var(--color-scroll-track);
    border-radius: 10px;
}

.sidebar-izquierda::-webkit-scrollbar-thumb {
    background: var(--color-scroll-thumb);
    border-radius: 10px;
}

.sidebar-izquierda::-webkit-scrollbar-thumb:hover {
    background: var(--color-scroll-thumb-hover);
}

/* === ESTILOS PARA INFO DE PRODUCTO === */
.info-producto-card {
    background: var(--color-bg-soft);
    border-radius: 10px;
    padding: 20px;
    margin-bottom: 20px;
}

.info-row {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: 5px 0;
    border-bottom: 1px solid var(--color-border-soft);
}

.info-row:last-child {
    border-bottom: none;
}

.info-label {
    font-weight: 600;
    color: var(--color-text-muted);
    min-width: 130px;
}

.info-value {
    font-weight: 700;
    color: var(--color-text-main);
    text-align: right;
    flex: 1;
}

.info-descripcion {
    word-break: break-word;
}

/* === CARD DE STOCK === */
.stock-card {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 20px;
    color: white;
}

.stock-card h3 {
    margin: 0 0 15px 0;
    font-size: var(--font-size-lg);
    color: white;
}

.stock-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
}

.stock-item {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 15px;
    text-align: center;
}

.stock-label {
    display: block;
    font-size: var(--font-size-xs);
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 5px;
    text-transform: uppercase;
}

.stock-value {
    display: block;
    font-size: var(--font-size-2xl);
    font-weight: 700;
}

.stock-positivo {
    color: #4ade80;
}

.stock-negativo {
    color: #f87171;
}

.stock-teorico {
    grid-column: span 2;
    background: rgba(255, 255, 255, 0.15);
}

.stock-destacado {
    font-size: var(--font-size-3xl);
    color: #60a5fa;
}

.stock-mensaje {
    text-align: center;
    color: rgba(255, 255, 255, 0.7);
    font-size: var(--font-size-sm);
    margin-top: 15px;
    padding: 10px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
}

/* === ACCIONES PRODUCTO === */
.acciones-producto {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.acciones-producto .btn-large {
    padding: 18px 25px;
    font-size: var(--font-size-lg);
}

/* === INFO PRODUCTO MINI === */
.info-producto-mini {
    background: var(--color-bg-soft);
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.info-producto-mini span:first-child {
    font-weight: 700;
    color: var(--color-text-main);
}

/* === REGISTRO DESCRIPCION === */
.registro-descripcion {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    margin-bottom: 5px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* === INPUT CODIGO ERP EN TABLA === */
.input-codigo-erp {
    width: 80px;
    padding: 5px 8px;
    border: 1px solid var(--color-border-soft);
    border-radius: 4px;
    font-family: var(--font-family-base);
    font-size: var(--font-size-sm);
    text-align: center;
}

.input-codigo-erp:focus {
    outline: none;
    border-color: var(--color-primary);
}

.input-codigo-erp:disabled {
    background: #f0f0f0;
    cursor: not-allowed;
}

/* === MENSAJE INFO === */
.mensaje-info {
    background: #e0f2fe;
    color: #0369a1;
    border: 1px solid #7dd3fc;
}

/* === PAD VACIA === */
.pad-vacia {
    visibility: hidden;
}

/* === STOCK OTROS ALMACENES === */
.stock-otros {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    padding: 15px;
    margin-top: 0;
}

.stock-otros h3 {
    font-size: var(--font-size-md);
    margin-bottom: 12px;
}

.otros-almacenes-lista {
    display: flex;
    flex-direction: column;
    gap: 10px;
    max-height: 400px;
    overflow-y: auto;
}

/* Estilos específicos para panel lateral */
.panel-otros-almacenes {
    margin-bottom: 15px;
    border-radius: 12px;
}

.otro-almacen-item {
    background: rgba(255, 255, 255, 0.15);
    border-radius: 8px;
    padding: 10px 12px;
    border-left: 3px solid #60a5fa;
}

.otro-almacen-nombre {
    font-weight: 600;
    font-size: var(--font-size-base);
    margin-bottom: 6px;
    color: #93c5fd;
}

.otro-almacen-stocks {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    font-size: var(--font-size-sm);
}

.otro-stock-item {
    background: rgba(255, 255, 255, 0.1);
    padding: 4px 10px;
    border-radius: 4px;
    white-space: nowrap;
    font-size: var(--font-size-base);
}

.otro-stock-item small {
    opacity: 0.7;
    margin-right: 3px;
    font-size: var(--font-size-sm);
}

.otro-stock-teorico {
    background: rgba(96, 165, 250, 0.3);
    color: #bfdbfe;
}