/* --- VARIABLES & BASE --- */
:root {
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --bg-color: #f8fafc;
    --text-main: #1e293b;
    --sidebar-width: 280px;
    --sidebar-collapsed: 80px;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    overflow-x: hidden;
}

/* --- TUS ESTILOS & ANIMACIONES --- */

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}
.fade-in-up {
    animation: fadeInUp 0.8s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}
.float-animation {
    animation: float 6s ease-in-out infinite;
}

.gradient-border-focus:focus-within {
    border-color: transparent;
    background: linear-gradient(white, white) padding-box,
                linear-gradient(135deg, #764ba2, #9f7aea) border-box;
    box-shadow: 0 0 0 1px #9f7aea;
}

.glow-effect {
    position: relative;
    z-index: 1;
}
.glow-effect::after {
    content: '';
    position: absolute;
    top: 4px; left: 0; right: 0; bottom: -4px;
    border-radius: inherit;
    background: inherit;
    filter: blur(15px);
    opacity: 0.4;
    transition: opacity 0.3s ease;
    z-index: -1;
}
.glow-effect:hover::after {
    opacity: 0.7;
}

.btn-primary {
    background: var(--primary-gradient);
    color: white;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px -5px rgba(118, 75, 162, 0.4);
}

.gradient-text {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 800;
}

.gradient-bg {
    background: var(--primary-gradient);
}

.bg-grid {
    background-image: radial-gradient(#cbd5e1 1px, transparent 1px);
    background-size: 40px 40px;
    opacity: 0.5;
}

/* --- ESTILOS ESPECÍFICOS DEL DASHBOARD --- */

.layout-container {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

.sidebar {
    width: var(--sidebar-width);
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    flex-shrink: 0;
    white-space: nowrap;
}

.sidebar.collapsed {
    width: var(--sidebar-collapsed);
}

/* Ocultar textos marcados explícitamente */
.sidebar.collapsed .sidebar-text {
    opacity: 0;
    display: none;
}

/* Centrar la flecha y ocultar logo */
.sidebar.collapsed .sidebar-header {
    padding-left: 0 !important;
    padding-right: 0 !important;
    justify-content: center !important;
}
.sidebar.collapsed .logo-container {
    display: none;
}

.main-content {
    flex-grow: 1;
    overflow-x: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.chart-card {
    background: white;
    border-radius: 16px;
    border: 1px solid rgba(165, 180, 252, 0.2);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}
.chart-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 20px -5px rgba(102, 126, 234, 0.15);
}

.file-drop-zone {
    background: linear-gradient(145deg, #f8fafc, #f1f5f9);
    border: 2px dashed #c7d2fe;
    transition: all 0.3s ease;
}
.file-drop-zone:hover, .file-drop-zone.dragover {
    border-color: #818cf8;
    background: linear-gradient(145deg, #eef2ff, #e0e7ff);
}

.loader {
    width: 48px; height: 48px;
    border: 3px solid #eef2ff; border-radius: 50%;
    border-top-color: #6366f1;
    animation: spin 1s ease-in-out infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #94a3b8; }

/* --- FIX LISTA HISTORIAL (Fechas en sidebar colapsado) --- */

/* Cuando la sidebar está colapsada, fuerza márgenes y corte de texto */
.sidebar.collapsed #historyList {
    padding-left: 10px;
    padding-right: 10px;
    text-align: center;
}

/* Asegura que cualquier elemento dentro del historial respete el ancho */
.sidebar.collapsed #historyList > * {
    margin-left: auto;
    margin-right: auto;
    max-width: 100%;       /* No pasarse del ancho */
    overflow: hidden;      /* Cortar lo que sobra */
    text-overflow: ellipsis; /* Poner ... si es muy largo */
    padding-left: 4px;     /* Margen de seguridad interno */
    padding-right: 4px;    /* Margen de seguridad interno */
    font-size: 0.75rem;    /* Texto un pelín más pequeño para que quepa mejor */
}