@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

/* --- VARIABLES GLOBALES (MODO CLARO) --- */
:root {
    --font-main: 'Inter', sans-serif;
    
    /* Layout Colors */
    --bg-body: #F4F7FE;
    --sidebar-bg: #111C43;
    --sidebar-hover: rgba(255,255,255,0.1);
    --sidebar-text: #A3AED0;
    --card-bg: #FFFFFF;
    
    /* Text Colors */
    --text-primary: #2B3674;
    --text-secondary: #A3AED0;
    
    /* Borders & Shadows */
    --border-color: #E2E8F0;
    --shadow-soft: 0px 4px 20px rgba(0, 0, 0, 0.05);
    
    /* Gradients (Light Mode Cards) */
    --grad-purple: linear-gradient(135deg, #868CFF 0%, #4318FF 100%);
    --grad-yellow: linear-gradient(135deg, #FFCE47 0%, #FF9D00 100%);
    --grad-blue: linear-gradient(135deg, #5AB1FF 0%, #0075FF 100%);
    --grad-pink: linear-gradient(135deg, #FF91C8 0%, #FF3D89 100%);
    --grad-alert: linear-gradient(135deg, #FF7B7B 0%, #FF0000 100%);
    
    /* Icon Circles */
    --icon-bg: rgba(255, 255, 255, 0.2);
    --icon-color: #FFFFFF;
    
    /* Inputs */
    --input-bg: #F4F7FE;
    
    /* Dark Mode specific borders (invisible in light) */
    --neon-active: transparent;
    --neon-danger: transparent;
}

/* --- VARIABLES GLOBALES (MODO OSCURO) --- */
[data-theme="dark"] {
    --bg-body: #0B1120;
    --sidebar-bg: #0B1120;
    --sidebar-hover: rgba(0, 242, 254, 0.1);
    --sidebar-text: #94A3B8;
    --card-bg: #151C2C;
    
    --text-primary: #F8FAFC;
    --text-secondary: #94A3B8;
    
    --border-color: #1E293B;
    --shadow-soft: 0px 4px 20px rgba(0, 0, 0, 0.2);
    
    /* Override Gradients to Solid Dark with Neon Borders */
    --grad-purple: var(--card-bg);
    --grad-yellow: var(--card-bg);
    --grad-blue: var(--card-bg);
    --grad-pink: var(--card-bg);
    --grad-alert: rgba(2ef, 68, 68, 0.1);
    
    /* Icon Circles adapted for Dark */
    --icon-bg: rgba(0, 242, 254, 0.1);
    --icon-color: #00F2FE;
    
    --input-bg: #0F172A;
    
    /* Neon Borders */
    --neon-active: #00F2FE;
    --neon-danger: #EF4444;
}

/* --- RESET & LAYOUT --- */
* { margin: 0; padding: 0; box-sizing: border-box; font-family: var(--font-main); }
body { background-color: var(--bg-body); color: var(--text-primary); transition: background-color 0.3s, color 0.3s; }

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

/* SIDEBAR */
.sidebar { width: 100px; background: var(--sidebar-bg); display: flex; flex-direction: column; align-items: center; padding: 20px 0; border-right: 1px solid var(--border-color); z-index: 10; transition: background 0.3s;}
.brand { text-align: center; color: #FFF; margin-bottom: 40px; }
.brand h2 { font-size: 24px; font-weight: 700; }
.brand-sub { font-size: 10px; opacity: 0.7; text-transform: uppercase; }

.nav-menu { display: flex; flex-direction: column; gap: 20px; width: 100%; }
.nav-item { text-decoration: none; color: var(--sidebar-text); display: flex; flex-direction: column; align-items: center; gap: 8px; font-size: 11px; padding: 15px 0; border-left: 3px solid transparent; transition: all 0.2s;}
.nav-item i { font-size: 24px; }
.nav-item:hover, .nav-item.active { background: var(--sidebar-hover); color: #FFF; border-left-color: #00F2FE; }

/* MAIN CONTENT */
.main-content { flex: 1; display: flex; flex-direction: column; overflow-y: auto; }

/* TOPBAR */
.topbar { background: var(--bg-body); padding: 20px 40px; display: flex; justify-content: space-between; align-items: center; position: sticky; top: 0; z-index: 5; transition: background 0.3s;}
.search-bar { background: var(--card-bg); padding: 10px 20px; border-radius: 30px; display: flex; align-items: center; gap: 10px; width: 300px; box-shadow: var(--shadow-soft); border: 1px solid var(--border-color);}
.search-bar input { border: none; background: transparent; outline: none; width: 100%; color: var(--text-primary); }
.topbar-actions { display: flex; align-items: center; gap: 20px; }
.icon-btn { background: none; border: none; font-size: 24px; color: var(--text-secondary); cursor: pointer; transition: color 0.2s; }
.icon-btn:hover { color: var(--text-primary); }
.avatar { width: 40px; height: 40px; border-radius: 50%; background: var(--border-color); display: flex; justify-content: center; align-items: center; font-size: 20px; }

/* WRAPPER & TYPOGRAPHY */
.content-wrapper { padding: 0 40px 40px 40px; }
.page-header { margin-bottom: 30px; }
.page-header h1 { font-size: 32px; font-weight: 700; color: var(--text-primary); }
.page-header p { color: var(--text-secondary); font-size: 14px; }

/* CARDS & GRIDS */
.kpi-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 20px; margin-bottom: 30px; }
.kpi-card { border-radius: 16px; padding: 25px; display: flex; align-items: center; gap: 20px; box-shadow: var(--shadow-soft); position: relative; overflow: hidden; transition: border 0.3s, background 0.3s;}
.kpi-info { color: #FFF; z-index: 1; }
.kpi-info span { font-size: 14px; opacity: 0.9; }
.kpi-info h3 { font-size: 28px; font-weight: 700; margin-top: 5px; }
.icon-circle { width: 60px; height: 60px; border-radius: 50%; background: var(--icon-bg); display: flex; justify-content: center; align-items: center; font-size: 28px; color: var(--icon-color); z-index: 1;}

.grad-purple { background: var(--grad-purple); border: 1px solid var(--border-color); }
.grad-yellow { background: var(--grad-yellow); border: 1px solid var(--border-color); }
.grad-blue { background: var(--grad-blue); border: 1px solid var(--border-color); }
.grad-alert { background: var(--grad-alert); border: 1px solid var(--border-color); }

/* Dark mode specific text override for cards to ensure readability when gradients turn to solid dark */
[data-theme="dark"] .kpi-info { color: var(--text-primary); }
[data-theme="dark"] .grad-alert { border-color: var(--neon-danger); box-shadow: 0 0 10px rgba(239, 68, 68, 0.2); }

.main-grid { display: grid; grid-template-columns: 2fr 1fr; gap: 20px; }
.card { background: var(--card-bg); border-radius: 16px; padding: 25px; box-shadow: var(--shadow-soft); border: 1px solid var(--border-color); transition: all 0.3s; }
.card-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
.card-header h3 { font-size: 18px; font-weight: 600; }

/* Neon Borders for Dark Mode (Applied via classes, invisible in light mode due to transparent variable) */
.card-neon-active { border: 1px solid var(--neon-active); box-shadow: inset 0 0 5px rgba(0, 242, 254, 0.1); }
.card-neon-danger { border: 1px solid var(--neon-danger); box-shadow: inset 0 0 5px rgba(239, 68, 68, 0.1); }
[data-theme="light"] .card-neon-active, [data-theme="light"] .card-neon-danger { border-color: var(--border-color); box-shadow: var(--shadow-soft); }

/* TABLES */
.table-container { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th { text-align: left; padding: 12px; color: var(--text-secondary); font-size: 12px; text-transform: uppercase; border-bottom: 1px solid var(--border-color); }
td { padding: 15px 12px; font-size: 14px; border-bottom: 1px solid var(--border-color); }
tbody tr:hover { background: rgba(0,0,0,0.02); }
[data-theme="dark"] tbody tr:hover { background: rgba(255,255,255,0.02); }

/* UTILS */
.badge { background: rgba(239, 68, 68, 0.1); color: #EF4444; padding: 5px 10px; border-radius: 8px; font-size: 12px; font-weight: 600; }
.btn { padding: 10px 15px; border-radius: 8px; font-weight: 600; cursor: pointer; border: none; transition: 0.2s; font-size: 14px;}
.btn-primary { background: #4318FF; color: white; }
.btn-primary:hover { background: #2B00FF; }
.btn-small { padding: 5px 10px; font-size: 12px; }
.btn-outline { background: transparent; border: 1px solid var(--border-color); color: var(--text-primary); }
.w-100 { width: 100%; }
.mt-20 { margin-top: 20px; }

/* FORMS */
.form-group { margin-bottom: 15px; }
.form-group label { display: block; margin-bottom: 8px; color: var(--text-secondary); font-size: 13px; font-weight: 500;}
.form-group input { width: 100%; padding: 12px; border-radius: 8px; border: 1px solid var(--border-color); background: var(--input-bg); color: var(--text-primary); outline: none;}
.form-group input:focus { border-color: #4318FF; }
[data-theme="dark"] .form-group input:focus { border-color: #00F2FE; }

/* MODAL */
.modal { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.5); z-index: 100; display: flex; justify-content: center; align-items: center; }
.modal.hidden { display: none; }
.modal-content { background: var(--card-bg); padding: 30px; border-radius: 16px; width: 400px; border: 1px solid var(--border-color); box-shadow: var(--shadow-soft);}
.modal-content h3 { margin-bottom: 15px; }
.modal-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 20px; }

/* LIVE INDICATOR */
.live-indicator { display: inline-block; width: 10px; height: 10px; background: #00e396; border-radius: 50%; box-shadow: 0 0 8px #00e396; animation: pulse 1.5s infinite; }
@keyframes pulse { 0% { opacity: 1; } 50% { opacity: 0.4; } 100% { opacity: 1; } }