/*
 * KORBRAIN OS - Enterprise Design System
 * Version: 1.0.0
 * Description: Main CSS for Korbrain Platform (SAP/Oracle Style)
 */

:root {
    --primary: #0d9488;
    --primary-dark: #0f766e;
    --primary-soft: #ccfbf1;
    --accent: #06b6d4;
    --accent-soft: #cffafe;
    --blue: #1d4ed8;
    --ink: #0f172a;
    --ink-2: #1e293b;
    --muted: #64748b;
    --muted-2: #94a3b8;
    --line: rgba(15, 23, 42, .08);
    --white: #ffffff;
    --card: rgba(255, 255, 255, .78);
    --shadow: 0 24px 70px rgba(15, 23, 42, .10);
    --shadow-soft: 0 16px 45px rgba(13, 148, 136, .12);
    --radius-xl: 30px;
    --radius-lg: 22px;
    --radius-md: 16px;
    
    --sidebar-width: 280px;
    --topbar-height: 80px;
}

/* Global Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    color: var(--ink);
    background:
        radial-gradient(circle at 8% 4%, rgba(6, 182, 212, .24), transparent 28%),
        radial-gradient(circle at 92% 10%, rgba(13, 148, 136, .22), transparent 30%),
        linear-gradient(135deg, #f8fffd 0%, #ecfeff 38%, #ffffff 72%, #f8fafc 100%);
    overflow: hidden;
    display: flex;
    height: 100vh;
}

/* Technical Grid Background */
body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: -3;
    background-image:
        linear-gradient(rgba(15, 23, 42, .035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(15, 23, 42, .035) 1px, transparent 1px);
    background-size: 42px 42px;
    mask-image: linear-gradient(to bottom, rgba(0,0,0,.8), transparent 78%);
    -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,.8), transparent 78%);
}

a {
    color: inherit;
    text-decoration: none;
}

/* Layout Structure */
.app-container {
    display: flex;
    width: 100%;
    height: 100vh;
}

/* Sidebar Styling */
.sidebar {
    width: var(--sidebar-width);
    background: rgba(255, 255, 255, 0.4);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-right: 1px solid var(--line);
    display: flex;
    flex-direction: column;
    z-index: 100;
}

.sidebar-header {
    height: var(--topbar-height);
    display: flex;
    align-items: center;
    padding: 0 28px;
    border-bottom: 1px solid var(--line);
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.brand-mark {
    width: 38px;
    height: 38px;
    border-radius: 12px;
    position: relative;
    display: grid;
    place-items: center;
    color: white;
    font-size: 1rem;
    font-weight: 900;
    background: linear-gradient(135deg, var(--primary-dark), var(--accent));
    box-shadow: 0 10px 20px rgba(13, 148, 136, .24);
}

.brand-mark::before,
.brand-mark::after {
    content: "";
    position: absolute;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: white;
    box-shadow: 0 0 0 3px rgba(255,255,255,.16);
}

.brand-mark::before { top: 6px; right: 6px; }
.brand-mark::after { left: 6px; bottom: 6px; }

.brand-name {
    line-height: 1;
}

.brand-name strong {
    display: block;
    font-size: 1.15rem;
    letter-spacing: -.04em;
    color: var(--ink);
}

.brand-name span {
    display: block;
    margin-top: 2px;
    color: var(--primary);
    font-size: .65rem;
    font-weight: 800;
    letter-spacing: .1em;
    text-transform: uppercase;
}

/* Sidebar Menu */
.sidebar-menu {
    padding: 24px 16px;
    flex: 1;
    overflow-y: auto;
}

.menu-label {
    font-size: 0.72rem;
    font-weight: 800;
    color: var(--muted-2);
    text-transform: uppercase;
    letter-spacing: .12em;
    margin: 18px 0 8px 16px;
}

.menu-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 12px 16px;
    color: var(--muted);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.92rem;
    transition: .2s ease;
    margin-bottom: 4px;
}

.menu-item i {
    font-size: 1.1rem;
    width: 22px;
    text-align: center;
    color: var(--muted-2);
    transition: .2s ease;
}

.menu-item:hover {
    background: rgba(255,255,255,0.6);
    color: var(--ink);
}

.menu-item:hover i {
    color: var(--primary);
}

.menu-item.active {
    background: var(--white);
    color: var(--primary-dark);
    box-shadow: 0 4px 12px rgba(13, 148, 136, 0.08);
    border: 1px solid var(--line);
}

.menu-item.active i {
    color: var(--primary);
}

/* Main Area */
.main-wrapper {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.topbar {
    height: var(--topbar-height);
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-bottom: 1px solid var(--line);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 40px;
}

.page-title {
    font-size: 1.4rem;
    font-weight: 800;
    letter-spacing: -.03em;
    color: var(--ink);
}

.topbar-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

.icon-btn {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    border: 1px solid var(--line);
    background: var(--white);
    color: var(--muted);
    font-size: 1.1rem;
    display: grid;
    place-items: center;
    cursor: pointer;
    transition: .2s ease;
    box-shadow: 0 4px 10px rgba(15, 23, 42, 0.03);
}

.icon-btn:hover {
    color: var(--primary);
    border-color: var(--primary-soft);
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(13, 148, 136, 0.1);
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 6px;
    padding-right: 16px;
    background: var(--white);
    border-radius: 99px;
    border: 1px solid var(--line);
    cursor: pointer;
    transition: .2s ease;
}

.avatar {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white;
    display: grid;
    place-items: center;
    font-weight: 800;
    font-size: .85rem;
}

.user-info h4 { font-size: 0.85rem; color: var(--ink); font-weight: 700; margin: 0; }
.user-info p { font-size: 0.7rem; color: var(--muted); font-weight: 600; margin: 0; }

/* Content Area */
.content {
    flex: 1;
    padding: 40px;
    overflow-y: auto;
}

/* Stat Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
    margin-bottom: 32px;
}

.stat-card {
    padding: 24px 28px;
    border-radius: var(--radius-lg);
    background: var(--card);
    border: 1px solid var(--line);
    box-shadow: 0 14px 36px rgba(15, 23, 42, .03);
    backdrop-filter: blur(18px);
    transition: .3s ease;
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    opacity: 0;
    transition: .3s ease;
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-soft);
    border-color: rgba(13, 148, 136, .15);
}

.stat-card:hover::before {
    opacity: 1;
}

.stat-card .icon-wrapper {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    background: var(--primary-soft);
    color: var(--primary-dark);
    display: grid;
    place-items: center;
    font-size: 1.2rem;
    margin-bottom: 16px;
}

.stat-card strong {
    display: block;
    font-size: 2.15rem;
    letter-spacing: -.04em;
    color: var(--ink);
    font-weight: 800;
}

.stat-card span {
    display: block;
    margin-top: 4px;
    color: var(--muted);
    font-size: .9rem;
    font-weight: 600;
}

/* Panel & Table Styling */
.panel {
    border-radius: var(--radius-xl);
    padding: 32px;
    background: var(--card);
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
    backdrop-filter: blur(18px);
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.panel-header h3 {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--ink);
    letter-spacing: -.02em;
}

/* Buttons */
.btn {
    border: 0;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 9px;
    min-height: 46px;
    padding: 0 20px;
    border-radius: 999px;
    font-size: .92rem;
    font-weight: 800;
    letter-spacing: -.01em;
    transition: .25s ease;
    white-space: nowrap;
}

.btn-primary {
    color: white;
    background: linear-gradient(135deg, var(--primary-dark), var(--accent));
    box-shadow: 0 12px 24px rgba(13, 148, 136, .24);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 16px 32px rgba(13, 148, 136, .35);
}

.btn-secondary {
    color: var(--ink);
    background: rgba(255, 255, 255, .72);
    border: 1px solid var(--line);
    box-shadow: 0 10px 28px rgba(15, 23, 42, .06);
}

.btn-secondary:hover {
    transform: translateY(-2px);
    background: white;
}

/* Data Table Enterprise Styling */
.table-wrapper {
    width: 100%;
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

th {
    padding: 16px;
    font-size: 0.75rem;
    font-weight: 800;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: .1em;
    border-bottom: 2px solid var(--line);
}

td {
    padding: 18px 16px;
    font-size: 0.92rem;
    color: var(--ink-2);
    font-weight: 500;
    border-bottom: 1px solid var(--line);
}

tr:last-child td {
    border-bottom: none;
}

tr:hover td {
    background: rgba(255,255,255,0.5);
}

/* Badges */
.badge {
    padding: 6px 12px;
    border-radius: 99px;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: .05em;
    display: inline-block;
}

.badge-success { background: #dcfce7; color: #166534; }
.badge-warning { background: #fef9c3; color: #854d0e; }
.badge-info { background: #e0f2fe; color: #0369a1; }

/* Scrollbars */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: rgba(15, 23, 42, 0.02);
}

::-webkit-scrollbar-thumb {
    background: rgba(15, 23, 42, 0.1);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(15, 23, 42, 0.2);
}

/* =========================================
   KORBRAIN GLOBAL FORMS & INPUTS
   ========================================= */
.kb-input {
    width: 100%; 
    padding: 12px 16px; 
    border-radius: 12px;
    border: 1px solid var(--line); 
    background: white;
    font-family: 'Inter', sans-serif; 
    font-size: 0.9rem; 
    outline: none; 
    transition: 0.2s;
}
.kb-input:focus { 
    border-color: var(--primary); 
    box-shadow: 0 0 0 4px var(--primary-soft); 
}

/* =========================================
   KORBRAIN GLOBAL BUTTONS
   ========================================= */
.btn-primary {
    border: 0; cursor: pointer; display: inline-flex; align-items: center; gap: 8px;
    padding: 12px 24px; border-radius: 999px; font-size: .85rem; font-weight: 700; color: white;
    background: linear-gradient(135deg, var(--primary-dark), var(--accent));
    box-shadow: 0 12px 24px rgba(13, 148, 136, .24); transition: .2s ease; text-decoration: none;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 32px rgba(13, 148, 136, .35); color: white; }

/* Variante: Botón Secundario (Cancelar) */
.btn-secondary {
    background: var(--white); color: var(--muted); border: 1px solid var(--line);
    box-shadow: 0 4px 10px rgba(0,0,0,0.03); 
}
.btn-secondary:hover { background: #f8fafc; color: var(--ink); border-color: var(--muted-2); box-shadow: 0 6px 15px rgba(0,0,0,0.05); }

/* Variante: Botón Ancho Completo */
.btn-block { width: 100%; justify-content: center; padding: 16px; font-size: 1rem; }

/* Botones de Icono (Copiar/Regenerar) */
.btn-icon { 
    background: var(--card); border: 1px solid var(--line); border-radius: 12px; 
    padding: 0 18px; color: var(--muted); cursor: pointer; transition: 0.2s; 
    display: grid; place-items: center; 
}
.btn-icon:hover { background: var(--primary-soft); color: var(--primary-dark); border-color: var(--primary); }