/* ============================================================================
   LexPro — Core Stylesheet
   Base reset, typography, and reusable component classes.
   Bootstrap 5.3 handles grid/utilities; this file defines the premium layer.
   ========================================================================= */

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
    font-family: var(--font-sans);
    font-size: var(--fs-base);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
    transition: background-color var(--dur-base) var(--ease-out), color var(--dur-base) var(--ease-out);
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--color-text);
    margin: 0;
}

a { color: var(--color-secondary); text-decoration: none; transition: color var(--dur-fast) var(--ease-out); }
a:hover { color: var(--color-primary); }

::selection { background: rgba(var(--color-primary-rgb), .2); }

/* ---- Scrollbars ---- */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--color-border-strong); border-radius: var(--radius-pill); }
::-webkit-scrollbar-thumb:hover { background: var(--color-text-subtle); }

/* ============================================================================
   Utility
   ========================================================================= */
.text-muted-lex { color: var(--color-text-muted) !important; }
.text-subtle-lex { color: var(--color-text-subtle) !important; }
.fw-medium { font-weight: 500; }
.fw-semibold { font-weight: 600; }
.bg-surface { background: var(--color-surface); }
.rounded-lex-sm { border-radius: var(--radius-sm); }
.rounded-lex-md { border-radius: var(--radius-md); }
.rounded-lex-lg { border-radius: var(--radius-lg); }

/* ============================================================================
   Buttons
   ========================================================================= */
.btn-lex {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .5rem;
    font-family: var(--font-sans);
    font-size: var(--fs-sm);
    font-weight: 600;
    padding: .65rem 1.25rem;
    border-radius: var(--radius-pill);
    border: 1px solid transparent;
    cursor: pointer;
    transition: transform var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out), background var(--dur-fast) var(--ease-out), border-color var(--dur-fast) var(--ease-out);
    white-space: nowrap;
    line-height: 1;
}
.btn-lex:active { transform: scale(.97); }
.btn-lex:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }
.btn-lex.text-start { justify-content: flex-start; }

.btn-lex-primary {
    background: var(--gradient-brand);
    color: #fff;
    border-color: rgba(255,255,255,.16);
}
.btn-lex-primary:hover { box-shadow: var(--shadow-glow); transform: translateY(-1px); color: #fff; }

.btn-lex-outline {
    background: var(--color-surface);
    color: var(--color-text);
    border: 1.5px solid var(--color-border);
}
.btn-lex-outline:hover { border-color: var(--color-primary); color: var(--color-primary); }

.btn-lex-ghost {
    background: transparent;
    color: var(--color-text-muted);
}
.btn-lex-ghost:hover { background: var(--color-surface-alt); color: var(--color-text); }

.btn-lex-soft {
    background: var(--color-primary-bg);
    color: var(--color-primary);
    border-color: transparent;
}
.btn-lex-soft:hover { background: var(--color-primary); color: #fff; }
.btn-lex-soft.active { background: var(--color-primary); color: #fff; }

.btn-lex-danger {
    background: var(--color-danger-bg);
    color: var(--color-danger);
}
.btn-lex-danger:hover { background: var(--color-danger); color: #fff; }

.btn-lex-sm { padding: .45rem .9rem; font-size: var(--fs-xs); }
.btn-lex-icon { width: 40px; height: 40px; padding: 0; border-radius: var(--radius-md); }

/* ============================================================================
   Cards
   ========================================================================= */
.card-lex {
    background: var(--color-surface);
    border: var(--border-lex);
    border-radius: var(--radius-lg);
    transition: border-color var(--dur-base) var(--ease-out), transform var(--dur-base) var(--ease-out);
}
.card-lex-hover:hover { border-color: var(--color-primary); transform: translateY(-2px); }
.card-lex-body { padding: 1.5rem; }
.card-lex-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-glass {
    background: var(--glass-bg);
    border: var(--border-lex-strong);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border-radius: var(--radius-xl);
}

/* ============================================================================
   KPI Stat Cards — premium: bold icon chip, tinted surface per accent, flat + bordered
   ========================================================================= */
.stat-card {
    position: relative;
    background: var(--color-surface);
    border: var(--border-lex);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    overflow: hidden;
    transition: transform var(--dur-base) var(--ease-out), border-color var(--dur-base) var(--ease-out);
}
.stat-card:hover { transform: translateY(-3px); border-color: var(--color-border-strong); }
.stat-card-icon {
    width: 56px; height: 56px;
    display: flex; align-items: center; justify-content: center;
    border-radius: var(--radius-md);
    font-size: 1.5rem;
    margin-bottom: 1.1rem;
    background: var(--color-surface-alt);
    color: var(--color-text-muted);
}
.stat-card-value {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.15;
    word-break: break-word;
}
.stat-card-label { font-size: var(--fs-sm); color: var(--color-text-muted); font-weight: 500; margin-top: .25rem; }
.stat-card-delta { font-size: var(--fs-xs); font-weight: 600; display: inline-flex; align-items: center; gap: .25rem; }
.stat-card-delta.up { color: var(--color-success); }
.stat-card-delta.down { color: var(--color-danger); }

/* ---- Accent variants: tinted surface + solid icon chip, one per KPI ---- */
.stat-card--primary { background: linear-gradient(165deg, rgba(30,64,175,.09), var(--color-surface) 65%); border-color: rgba(30,64,175,.22); }
.stat-card--primary .stat-card-icon { background: var(--color-primary); color: #fff; }

.stat-card--warning { background: linear-gradient(165deg, rgba(245,158,11,.12), var(--color-surface) 65%); border-color: rgba(245,158,11,.25); }
.stat-card--warning .stat-card-icon { background: var(--color-warning); color: #fff; }

.stat-card--success { background: linear-gradient(165deg, rgba(22,163,74,.11), var(--color-surface) 65%); border-color: rgba(22,163,74,.24); }
.stat-card--success .stat-card-icon { background: var(--color-success); color: #fff; }

.stat-card--info { background: linear-gradient(165deg, rgba(14,165,233,.11), var(--color-surface) 65%); border-color: rgba(14,165,233,.24); }
.stat-card--info .stat-card-icon { background: var(--color-info); color: #fff; }

.stat-card--danger { background: linear-gradient(165deg, rgba(220,38,38,.1), var(--color-surface) 65%); border-color: rgba(220,38,38,.22); }
.stat-card--danger .stat-card-icon { background: var(--color-danger); color: #fff; }

/* ============================================================================
   Badges
   ========================================================================= */
.badge-lex {
    display: inline-flex;
    align-items: center;
    gap: .35rem;
    font-size: var(--fs-xs);
    font-weight: 600;
    padding: .3rem .7rem;
    border-radius: var(--radius-pill);
    line-height: 1.3;
    text-transform: capitalize;
}
.badge-lex::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.badge-success { background: var(--color-success-bg); color: var(--color-success); }
.badge-warning { background: var(--color-warning-bg); color: var(--color-warning); }
.badge-danger  { background: var(--color-danger-bg); color: var(--color-danger); }
.badge-info    { background: var(--color-info-bg); color: var(--color-info); }
.badge-neutral { background: var(--color-surface-alt); color: var(--color-text-muted); }

/* ============================================================================
   Forms
   ========================================================================= */
.form-label-lex {
    font-size: var(--fs-sm);
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: .4rem;
    display: block;
}
.form-control-lex, .form-select-lex {
    width: 100%;
    font-size: var(--fs-base);
    padding: .7rem 1rem;
    border-radius: var(--radius-md);
    border: 1.5px solid var(--color-border);
    background: var(--color-surface);
    color: var(--color-text);
    transition: border-color var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out);
}
.form-control-lex:focus, .form-select-lex:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px rgba(var(--color-primary-rgb), .12);
}
.form-control-lex.is-invalid { border-color: var(--color-danger); }
.form-hint { font-size: var(--fs-xs); color: var(--color-text-subtle); margin-top: .35rem; }
.form-error { font-size: var(--fs-xs); color: var(--color-danger); margin-top: .35rem; font-weight: 500; }

.input-group-lex { position: relative; }
.input-group-lex .input-icon {
    position: absolute; left: 1rem; top: 50%; transform: translateY(-50%);
    color: var(--color-text-subtle); font-size: .9rem; pointer-events: none;
}
.input-group-lex .form-control-lex { padding-left: 2.75rem; }
.input-group-lex .input-action {
    position: absolute; right: .5rem; top: 50%; transform: translateY(-50%);
    background: none; border: none; color: var(--color-text-subtle); cursor: pointer;
    width: 36px; height: 36px; border-radius: var(--radius-sm);
}
.input-group-lex .input-action:hover { background: var(--color-surface-alt); color: var(--color-text); }

.filter-bar {
    display: flex; align-items: center; gap: .75rem; flex-wrap: nowrap;
    margin-bottom: 1.25rem;
}
.filter-bar .input-group-lex { flex: 1 1 180px; min-width: 0; }
.filter-bar .form-select-lex { width: auto; min-width: 130px; flex: 0 0 auto; }
.filter-bar .form-control-lex { min-width: 0; }
.filter-bar > .btn-lex { flex: 0 0 auto; white-space: nowrap; }

@media (max-width: 576px) {
    .filter-bar { flex-wrap: wrap; }
    .filter-bar .input-group-lex { flex: 1 1 100%; }
}

/* ============================================================================
   Tables
   ========================================================================= */
.table-lex-wrap { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); overflow: hidden; }
table.table-lex { width: 100%; border-collapse: collapse; font-size: var(--fs-sm); }
table.table-lex thead th {
    background: var(--color-surface-alt);
    color: var(--color-text-muted);
    font-weight: 600;
    text-transform: uppercase;
    font-size: var(--fs-xs);
    letter-spacing: .04em;
    padding: .9rem 1.25rem;
    border-bottom: 1px solid var(--color-border);
    text-align: left;
    white-space: nowrap;
}
table.table-lex tbody td {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--color-border);
    vertical-align: middle;
    color: var(--color-text);
}
table.table-lex tbody tr { transition: background var(--dur-fast) var(--ease-out); }
table.table-lex tbody tr:hover { background: var(--color-surface-alt); }
table.table-lex tbody tr:last-child td { border-bottom: none; }

/* ============================================================================
   Avatars
   ========================================================================= */
.avatar-lex {
    display: inline-flex; align-items: center; justify-content: center;
    border-radius: 50%;
    background: var(--gradient-brand);
    color: #fff;
    font-weight: 600;
    font-size: var(--fs-sm);
    flex-shrink: 0;
}
.avatar-lex-sm { width: 32px; height: 32px; font-size: var(--fs-xs); }
.avatar-lex-md { width: 42px; height: 42px; }
.avatar-lex-lg { width: 64px; height: 64px; font-size: var(--fs-lg); }

/* ============================================================================
   Animations
   ========================================================================= */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(14px); }
    to   { opacity: 1; transform: translateY(0); }
}
.animate-in { animation: fadeInUp var(--dur-slow) var(--ease-out) both; }

@keyframes pulseGlow {
    0%, 100% { box-shadow: 0 0 0 0 rgba(var(--color-primary-rgb), .35); }
    50% { box-shadow: 0 0 0 8px rgba(var(--color-primary-rgb), 0); }
}

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}
.skeleton {
    background: linear-gradient(90deg, var(--color-surface-alt) 25%, var(--color-border) 37%, var(--color-surface-alt) 63%);
    background-size: 400% 100%;
    animation: shimmer 1.4s ease infinite;
    border-radius: var(--radius-sm);
}

/* ============================================================================
   Empty / loading states
   ========================================================================= */
.empty-state { text-align: center; padding: 3.5rem 1.5rem; color: var(--color-text-muted); }
.empty-state i { font-size: 2.5rem; color: var(--color-text-subtle); margin-bottom: 1rem; }

/* ============================================================================
   Responsive helpers
   ========================================================================= */
@media (max-width: 991.98px) {
    .stat-card-value { font-size: 1.25rem; }
}

/* ============================================================================
   Print (global — any page can opt elements out via .no-print)
   ========================================================================= */
@media print {
    .app-sidebar, .app-topbar, .no-print { display: none !important; }
    .app-main { margin-left: 0 !important; padding: 0 !important; }
    body { background: #fff !important; }
    .card-lex { box-shadow: none !important; border: 1px solid #ddd !important; }
}