/* =====================================================
   SMED Analyzer Pro - Estilos CSS
   Metodología: Lean Manufacturing + Six Sigma
   ===================================================== */

/* --- VARIABLES CSS --- */
:root {
    /* Fondo */
    --bg-primary: #0a0a0a;
    --bg-secondary: #141414;
    --bg-card: #1a1a1a;
    --bg-hover: #222222;
    
    /* Texto */
    --text-primary: #e0e0e0;
    --text-secondary: #b0b0b0;
    --text-muted: #666666;
    
    /* Acentos */
    --accent-primary: #00ff9d;
    --accent-secondary: #00d4ff;
    --accent-warning: #ffaa00;
    --accent-danger: #ff4444;
    --accent-success: #10b981;
    
    /* Bordes */
    --border-color: #2a2a2a;
    --border-light: #333333;
    
    /* Categorías SMED */
    --cat-preparacion: #3b82f6;
    --cat-ajuste-int: #f97316;
    --cat-ajuste-ext: #10b981;
    --cat-verificacion: #8b5cf6;
    --cat-limpieza: #14b8a6;
    --cat-muda: #ef4444;
    --cat-espera: #f59e0b;
    --cat-transporte: #ec4899;
    --cat-movimiento: #06b6d4;
    --cat-defectos: #dc2626;
    
    /* Tabs */
    --tab-active: #222222;
    
    /* Sombras */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.5);
    
    /* Transiciones */
    --transition-fast: 0.1s ease;
    --transition-normal: 0.2s ease;
    --transition-slow: 0.3s ease;
}

/* --- RESET Y BASE --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 14px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 10px;
}

/* --- TIPOGRAFÍA --- */
h1 {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--accent-primary);
    margin-bottom: 0.5rem;
}

h2 {
    font-size: 0.85rem;
    font-weight: normal;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin: 0 0 8px 0;
    padding-bottom: 4px;
    border-bottom: 1px solid var(--border-color);
}

h3 {
    font-size: 1rem;
    font-weight: bold;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

/* --- CONTENEDOR PRINCIPAL --- */
.app-container {
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
}

/* --- HEADER --- */
.app-header {
    text-align: center;
    padding: 15px;
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-card));
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 10px;
}

.app-header h1 {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.app-header p {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 5px;
}

/* --- NAVEGACIÓN TABS --- */
.tab-nav {
    display: flex;
    gap: 5px;
    width: 100%;
    margin-bottom: 10px;
    flex-wrap: wrap;
}

.tab-btn {
    flex: 1;
    min-width: 100px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    padding: 10px 8px;
    cursor: pointer;
    text-transform: uppercase;
    font-family: inherit;
    font-weight: bold;
    font-size: 0.75rem;
    transition: all var(--transition-normal);
    border-radius: 4px 4px 0 0;
}

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

.tab-btn.active {
    background: var(--tab-active);
    color: var(--accent-primary);
    border-bottom: 2px solid var(--accent-primary);
}

/* --- SECCIONES DE VISTA --- */
.view-section {
    display: none;
    width: 100%;
    gap: 10px;
    flex-direction: column;
}

.view-section.active {
    display: flex;
}

/* --- TARJETAS --- */
.card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 15px;
    border-radius: 6px;
    box-shadow: var(--shadow-sm);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

/* --- DISPLAY RELOJ MAESTRO --- */
.master-clock {
    text-align: center;
    padding: 20px;
    background: linear-gradient(180deg, var(--bg-secondary), var(--bg-card));
    border-radius: 8px;
    margin-bottom: 15px;
}

.seconds-display {
    font-size: 3rem;
    font-weight: bold;
    color: var(--accent-primary);
    line-height: 1;
    text-shadow: 0 0 20px rgba(0, 255, 157, 0.3);
}

.time-display {
    font-size: 1rem;
    color: var(--accent-secondary);
    margin-top: 5px;
}

/* --- PANEL TIMERS ACTIVOS --- */
.active-timers-panel {
    border: 1px dashed var(--border-light);
    padding: 10px;
    border-radius: 6px;
    margin-bottom: 15px;
    background: rgba(255, 170, 0, 0.05);
}

.active-timers-panel.hidden {
    display: none;
}

.active-timers-panel h3 {
    font-size: 0.75rem;
    color: var(--accent-warning);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 5px;
}

.active-timer-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 5px 0;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.85rem;
}

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

.timer-cat {
    color: var(--text-muted);
    font-size: 0.75rem;
}

.timer-name {
    color: var(--accent-warning);
    font-weight: bold;
}

.timer-val {
    color: var(--text-primary);
    font-family: monospace;
    font-weight: bold;
}

/* --- GRID DE BOTONES DINÁMICOS --- */
.btn-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 10px;
    margin-bottom: 15px;
}

.smed-btn {
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    color: var(--text-primary);
    padding: 12px 8px;
    cursor: pointer;
    border-radius: 6px;
    font-family: inherit;
    font-size: 0.8rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    transition: all var(--transition-fast);
    min-height: 70px;
}

.smed-btn:hover {
    background: var(--bg-hover);
    border-color: var(--accent-secondary);
    transform: translateY(-2px);
}

.smed-btn:active {
    transform: translateY(1px);
}

.smed-btn .btn-name {
    font-weight: bold;
    text-align: center;
}

.smed-btn .btn-cat {
    font-size: 0.65rem;
    color: var(--text-muted);
}

.smed-btn .btn-timer {
    font-size: 0.7rem;
    color: var(--accent-warning);
    margin-top: 2px;
}

/* Botón activo (corriendo) */
.smed-btn.is-running {
    border-color: var(--accent-warning);
    background: rgba(255, 170, 0, 0.1);
    box-shadow: 0 0 10px rgba(255, 170, 0, 0.2);
}

.smed-btn.is-running .btn-name {
    color: var(--accent-warning);
}

/* Colores por categoría */
.smed-btn[data-cat="Preparación"] { border-left: 3px solid var(--cat-preparacion); }
.smed-btn[data-cat="Ajuste Interno"] { border-left: 3px solid var(--cat-ajuste-int); }
.smed-btn[data-cat="Ajuste Externo"] { border-left: 3px solid var(--cat-ajuste-ext); }
.smed-btn[data-cat="Verificación"] { border-left: 3px solid var(--cat-verificacion); }
.smed-btn[data-cat="Limpieza"] { border-left: 3px solid var(--cat-limpieza); }
.smed-btn[data-cat="Muda"] { border-left: 3px solid var(--cat-muda); }
.smed-btn[data-cat="Espera"] { border-left: 3px solid var(--cat-espera); }
.smed-btn[data-cat="Transporte"] { border-left: 3px solid var(--cat-transporte); }
.smed-btn[data-cat="Movimiento"] { border-left: 3px solid var(--cat-movimiento); }
.smed-btn[data-cat="Defectos"] { border-left: 3px solid var(--cat-defectos); }

/* --- BARRA DE ACCIONES --- */
.action-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
    margin: 15px 0;
    padding-top: 15px;
    border-top: 1px solid var(--border-color);
}

.action-btn {
    display: flex;
    align-items: center;
    gap: 5px;
    padding: 8px 12px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    color: var(--text-primary);
    cursor: pointer;
    border-radius: 4px;
    font-family: inherit;
    font-size: 0.75rem;
    transition: all var(--transition-fast);
}

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

.action-btn.danger {
    color: var(--accent-danger);
    border-color: var(--accent-danger);
}

.action-btn.danger:hover {
    background: rgba(255, 68, 68, 0.1);
}

.action-btn.success {
    color: var(--accent-success);
    border-color: var(--accent-success);
}

.action-btn.success:hover {
    background: rgba(16, 185, 129, 0.1);
}

.action-btn.primary {
    color: var(--accent-primary);
    border-color: var(--accent-primary);
}

.action-btn.primary:hover {
    background: rgba(0, 255, 157, 0.1);
}

/* --- HISTORIAL (LISTA) --- */
.history-container {
    max-height: 250px;
    overflow-y: auto;
    border-top: 1px solid var(--border-color);
    margin-top: 10px;
}

.history-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 5px;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.8rem;
    transition: background var(--transition-fast);
}

.history-item:hover {
    background: var(--bg-hover);
}

.history-item .item-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.history-item .item-name {
    color: var(--text-primary);
    font-weight: bold;
}

.history-item .item-cat {
    color: var(--text-muted);
    font-size: 0.7rem;
}

.history-item .item-time {
    color: var(--text-muted);
    font-size: 0.65rem;
}

.history-item .item-duration {
    color: var(--accent-primary);
    font-weight: bold;
    font-size: 0.9rem;
}

.history-item .item-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.delete-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 2px 5px;
    font-size: 1rem;
    transition: color var(--transition-fast);
}

.delete-btn:hover {
    color: var(--accent-danger);
}

/* --- ESTADÍSTICAS RESUMEN --- */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 8px;
    margin-bottom: 15px;
}

.stat-box {
    background: var(--bg-secondary);
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    text-align: center;
}

.stat-label {
    font-size: 0.65rem;
    color: var(--text-muted);
    display: block;
    margin-bottom: 4px;
}

.stat-value {
    font-size: 1rem;
    color: var(--accent-primary);
    font-weight: bold;
}

/* --- KPI CARDS --- */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 10px;
    margin-bottom: 15px;
}

.kpi-card {
    padding: 15px;
    border-radius: 6px;
    text-align: center;
}

.kpi-card.blue { background: rgba(59, 130, 246, 0.1); border: 1px solid rgba(59, 130, 246, 0.3); }
.kpi-card.red { background: rgba(239, 68, 68, 0.1); border: 1px solid rgba(239, 68, 68, 0.3); }
.kpi-card.green { background: rgba(16, 185, 129, 0.1); border: 1px solid rgba(16, 185, 129, 0.3); }
.kpi-card.yellow { background: rgba(245, 158, 11, 0.1); border: 1px solid rgba(245, 158, 11, 0.3); }
.kpi-card.purple { background: rgba(139, 92, 246, 0.1); border: 1px solid rgba(139, 92, 246, 0.3); }

.kpi-icon {
    font-size: 1.5rem;
    margin-bottom: 5px;
}

.kpi-label {
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-bottom: 5px;
}

.kpi-value {
    font-size: 1.5rem;
    font-weight: bold;
}

.kpi-card.blue .kpi-value { color: var(--cat-preparacion); }
.kpi-card.red .kpi-value { color: var(--cat-muda); }
.kpi-card.green .kpi-value { color: var(--accent-success); }
.kpi-card.yellow .kpi-value { color: var(--cat-espera); }
.kpi-card.purple .kpi-value { color: var(--cat-verificacion); }

/* --- BOX PLOT (VELA) --- */
.boxplot-container {
    height: 120px;
    position: relative;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    margin: 15px 0;
    overflow: hidden;
}

.boxplot-track {
    position: relative;
    height: 60px;
    width: 90%;
    margin: 30px auto;
}

.bp-line {
    position: absolute;
    top: 50%;
    height: 2px;
    background: var(--border-light);
}

.bp-box {
    position: absolute;
    top: 15%;
    height: 70%;
    background: rgba(0, 255, 157, 0.15);
    border: 2px solid var(--accent-primary);
    border-radius: 2px;
}

.bp-median {
    position: absolute;
    top: 5%;
    height: 90%;
    width: 3px;
    background: var(--text-primary);
    z-index: 2;
}

.bp-whisker {
    position: absolute;
    top: 25%;
    height: 50%;
    width: 2px;
    background: var(--text-muted);
}

.bp-label {
    position: absolute;
    top: 110%;
    font-size: 0.65rem;
    color: var(--text-muted);
    transform: translateX(-50%);
}

.bp-label.top {
    top: -25px;
    color: var(--text-primary);
    font-weight: bold;
}

.no-data-msg {
    text-align: center;
    padding: 40px;
    color: var(--text-muted);
}

/* --- CURVA DE GAUSS --- */
.gauss-container {
    width: 100%;
    height: 150px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    margin: 15px 0;
}

.gauss-container svg {
    width: 100%;
    height: 100%;
}

/* --- GRÁFICOS --- */
.chart-container {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 15px;
    margin-bottom: 15px;
}

.chart-title {
    font-size: 0.85rem;
    color: var(--text-primary);
    margin-bottom: 10px;
    font-weight: bold;
}

.charts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 15px;
}

/* --- DIAGRAMA DE GANTT --- */
.gantt-container {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 15px;
    overflow-x: auto;
}

.gantt-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.gantt-controls {
    display: flex;
    gap: 10px;
    align-items: center;
}

.gantt-timeline {
    position: relative;
    min-height: 200px;
}

.gantt-row {
    display: flex;
    align-items: center;
    margin-bottom: 8px;
    height: 30px;
}

.gantt-label {
    width: 120px;
    font-size: 0.75rem;
    color: var(--text-secondary);
    flex-shrink: 0;
}

.gantt-bar-container {
    flex: 1;
    height: 100%;
    background: var(--bg-card);
    border-radius: 3px;
    position: relative;
    overflow: hidden;
}

.gantt-bar {
    position: absolute;
    height: 100%;
    border-radius: 3px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.65rem;
    color: white;
    text-shadow: 0 1px 2px rgba(0,0,0,0.5);
    min-width: 20px;
}

.gantt-bar.cat-preparacion { background: var(--cat-preparacion); }
.gantt-bar.cat-ajuste-int { background: var(--cat-ajuste-int); }
.gantt-bar.cat-ajuste-ext { background: var(--cat-ajuste-ext); }
.gantt-bar.cat-verificacion { background: var(--cat-verificacion); }
.gantt-bar.cat-limpieza { background: var(--cat-limpieza); }
.gantt-bar.cat-muda { background: var(--cat-muda); }
.gantt-bar.cat-espera { background: var(--cat-espera); }
.gantt-bar.cat-transporte { background: var(--cat-transporte); }
.gantt-bar.cat-movimiento { background: var(--cat-movimiento); }
.gantt-bar.cat-defectos { background: var(--cat-defectos); }

.gantt-scale {
    display: flex;
    justify-content: space-between;
    margin-top: 10px;
    padding-left: 120px;
    font-size: 0.65rem;
    color: var(--text-muted);
}

/* --- FORMULARIOS --- */
.form-row {
    display: flex;
    gap: 10px;
    margin-bottom: 10px;
    flex-wrap: wrap;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
    flex: 1;
    min-width: 120px;
}

.form-label {
    font-size: 0.7rem;
    color: var(--text-muted);
}

.form-input,
.form-select {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 8px 10px;
    border-radius: 4px;
    font-family: inherit;
    font-size: 0.85rem;
    transition: border-color var(--transition-fast);
}

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

.form-input::placeholder {
    color: var(--text-muted);
}

/* --- VISTAS DE ANÁLISIS --- */
.analysis-selector {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
    flex-wrap: wrap;
}

.view-panel {
    display: none;
}

.view-panel.active {
    display: block;
}

/* Vista Financiera */
.financial-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

.financial-card {
    padding: 15px;
    border-radius: 6px;
    text-align: center;
}

.financial-card.cost {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.financial-card.savings {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.financial-card.roi {
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.3);
    grid-column: span 2;
}

.financial-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.financial-value {
    font-size: 1.8rem;
    font-weight: bold;
}

.financial-card.cost .financial-value { color: var(--accent-danger); }
.financial-card.savings .financial-value { color: var(--accent-success); }
.financial-card.roi .financial-value { color: var(--cat-preparacion); }

/* Recomendación */
.recommendation {
    margin-top: 15px;
    padding: 12px;
    border-radius: 6px;
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.3);
}

.recommendation-title {
    font-size: 0.85rem;
    color: var(--cat-espera);
    font-weight: bold;
    margin-bottom: 5px;
}

.recommendation-text {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* --- CONFIGURACIÓN --- */
.config-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px;
    border-bottom: 1px solid var(--border-color);
}

.config-row:hover {
    background: var(--bg-hover);
}

.config-item-name {
    color: var(--text-primary);
}

.config-item-cat {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-left: 8px;
}

/* --- TEORÍA SMED (COLAPSABLE) --- */
.theory-section {
    border: 1px solid var(--border-color);
    border-radius: 6px;
    margin-top: 15px;
    overflow: hidden;
}

.theory-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 15px;
    background: var(--bg-secondary);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.theory-header:hover {
    background: var(--bg-hover);
}

.theory-title {
    font-size: 0.9rem;
    font-weight: bold;
    color: var(--accent-secondary);
}

.theory-toggle {
    color: var(--text-muted);
    font-size: 1.2rem;
}

.theory-content {
    padding: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow), padding var(--transition-slow);
}

.theory-content.expanded {
    padding: 15px;
    max-height: 2000px;
}

.theory-content h4 {
    color: var(--accent-primary);
    margin: 15px 0 10px 0;
    font-size: 0.9rem;
}

.theory-content h4:first-child {
    margin-top: 0;
}

.theory-content p {
    color: var(--text-secondary);
    font-size: 0.8rem;
    margin-bottom: 10px;
    line-height: 1.6;
}

.theory-content ul {
    margin: 10px 0;
    padding-left: 20px;
}

.theory-content li {
    color: var(--text-secondary);
    font-size: 0.8rem;
    margin-bottom: 5px;
}

.theory-table {
    width: 100%;
    border-collapse: collapse;
    margin: 10px 0;
    font-size: 0.75rem;
}

.theory-table th,
.theory-table td {
    padding: 8px;
    border: 1px solid var(--border-color);
    text-align: left;
}

.theory-table th {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.theory-table td {
    color: var(--text-secondary);
}

/* --- SCROLLBAR CUSTOM --- */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

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

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* --- TOOLTIPS --- */
.tooltip {
    position: relative;
}

.tooltip::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-card);
    color: var(--text-primary);
    padding: 5px 10px;
    border-radius: 4px;
    font-size: 0.7rem;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
    border: 1px solid var(--border-color);
    z-index: 100;
}

.tooltip:hover::after {
    opacity: 1;
    visibility: visible;
}

/* --- RESPONSIVE --- */
@media (max-width: 768px) {
    html {
        font-size: 12px;
    }
    
    .tab-btn {
        padding: 8px 5px;
        font-size: 0.7rem;
    }
    
    .stats-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .kpi-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .btn-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .charts-grid {
        grid-template-columns: 1fr;
    }
    
    .financial-grid {
        grid-template-columns: 1fr;
    }
    
    .financial-card.roi {
        grid-column: span 1;
    }
    
    .form-row {
        flex-direction: column;
    }
    
    .form-group {
        min-width: 100%;
    }
    
    .gantt-label {
        width: 80px;
        font-size: 0.65rem;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .action-bar {
        flex-direction: column;
    }
    
    .action-btn {
        width: 100%;
        justify-content: center;
    }
}

/* --- ANIMACIONES --- */
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.pulse {
    animation: pulse 1.5s infinite;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in {
    animation: fadeIn 0.3s ease;
}

/* --- UTILITARIOS --- */
.hidden { display: none !important; }
.text-center { text-align: center; }
.text-right { text-align: right; }
.mt-10 { margin-top: 10px; }
.mb-10 { margin-bottom: 10px; }
.mb-15 { margin-bottom: 15px; }
.full-width { width: 100%; }