/* =====================================================================
   CRM Clientes — single application stylesheet (no CDNs, no frameworks)
   ===================================================================== */

:root {
    --color-primary: #1d4ed8;
    --color-primary-dark: #1e40af;
    --color-bg: #f1f5f9;
    --color-surface: #ffffff;
    --color-border: #e2e8f0;
    --color-text: #0f172a;
    --color-muted: #64748b;
    --color-danger: #dc2626;
    --color-danger-dark: #b91c1c;
    --color-success: #166534;
    --radius: 8px;
    --shadow: 0 1px 3px rgba(15, 23, 42, 0.08), 0 1px 2px rgba(15, 23, 42, 0.04);
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    font-size: 15px;
    line-height: 1.5;
    color: var(--color-text);
    background: var(--color-bg);
}

h1 { font-size: 1.6rem; margin: 0 0 0.25rem; }
h2 { font-size: 1.15rem; margin: 0 0 1rem; }
a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }
small { font-size: 0.82rem; }
.muted { color: var(--color-muted); }
.preline { white-space: pre-line; }
.hidden { display: none; }

/* ------------------------------------------------------------- topbar */
.topbar {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow);
}

.topbar-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0.6rem 1rem;
    display: flex;
    align-items: center;
    gap: 1.25rem;
    flex-wrap: wrap;
}

.brand {
    font-weight: 700;
    font-size: 1.05rem;
    color: var(--color-text);
}
.brand:hover { text-decoration: none; }

.main-nav {
    display: flex;
    gap: 0.25rem;
    flex-wrap: wrap;
}

.main-nav a {
    padding: 0.4rem 0.75rem;
    border-radius: var(--radius);
    color: var(--color-text);
}
.main-nav a:hover {
    background: var(--color-bg);
    text-decoration: none;
}

.topbar-user {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}
.user-chip small { color: var(--color-muted); }

/* ---------------------------------------------------------- structure */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 1.5rem 1rem 3rem;
}

.footer {
    text-align: center;
    color: var(--color-muted);
    font-size: 0.85rem;
    padding: 1rem;
}

.page-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 1.25rem;
}
.page-head p { margin: 0; }

.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 1.25rem;
    margin-bottom: 1.25rem;
}

.card-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    margin-bottom: 0.75rem;
}
.card-head h2 { margin: 0; }

.card-narrow { max-width: 560px; }

.two-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
}

/* --------------------------------------------------------------- stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
    margin-bottom: 1.25rem;
}

.stat-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-primary);
}
.stat-label { color: var(--color-muted); }

/* --------------------------------------------------------------- forms */
label {
    display: block;
    font-weight: 600;
    margin: 0.85rem 0 0.3rem;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="file"],
select,
textarea {
    width: 100%;
    padding: 0.5rem 0.65rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font: inherit;
    background: var(--color-surface);
    color: var(--color-text);
}

input:focus, select:focus, textarea:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 1px;
    border-color: var(--color-primary);
}

textarea { resize: vertical; }

.form-actions {
    margin-top: 1.25rem;
    display: flex;
    gap: 0.5rem;
}

.form-row {
    display: flex;
    gap: 1rem;
    align-items: flex-end;
    flex-wrap: wrap;
    margin-bottom: 1.25rem;
}
.form-row > div { flex: 1 1 220px; }
.form-row > .form-row-btn { flex: 0 0 auto; }
.form-row .grow { flex: 2 1 320px; }

.inline-form { display: inline-block; margin: 0; }

/* ------------------------------------------------------------- buttons */
.btn {
    display: inline-block;
    padding: 0.5rem 0.9rem;
    border: 1px solid transparent;
    border-radius: var(--radius);
    font: inherit;
    font-weight: 600;
    cursor: pointer;
    text-align: center;
    transition: background 0.15s ease;
}
.btn:hover { text-decoration: none; }

.btn-primary { background: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-dark); }

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

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

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

.btn-sm { padding: 0.3rem 0.6rem; font-size: 0.82rem; }
.btn-block { display: block; width: 100%; margin-top: 1.25rem; }

/* -------------------------------------------------------------- tables */
.table-wrap { overflow-x: auto; }

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    text-align: left;
    padding: 0.6rem 0.75rem;
    border-bottom: 1px solid var(--color-border);
    vertical-align: middle;
}

th {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--color-muted);
}

tbody tr:hover { background: #f8fafc; }
.row-inactive { opacity: 0.55; }

.actions-col { white-space: nowrap; width: 1%; }
.actions-col .btn { margin-right: 0.25rem; }

.truncate {
    max-width: 320px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* -------------------------------------------------------------- badges */
.badge {
    display: inline-block;
    padding: 0.15rem 0.55rem;
    border-radius: 999px;
    font-size: 0.74rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    white-space: nowrap;
}

.badge-email    { background: #dbeafe; color: #1e40af; }
.badge-llamada  { background: #dcfce7; color: #166534; }
.badge-reunion  { background: #fef3c7; color: #92400e; }
.badge-nota     { background: #ede9fe; color: #5b21b6; }
.badge-otro     { background: #e2e8f0; color: #334155; }
.badge-sistema  { background: #f1f5f9; color: #64748b; border: 1px dashed #cbd5e1; }
.badge-active   { background: #dcfce7; color: #166534; }
.badge-inactive { background: #fee2e2; color: #991b1b; }

/* ------------------------------------------------------------ timeline */
.timeline {
    list-style: none;
    margin: 0;
    padding: 0;
}

.timeline-item {
    display: flex;
    gap: 0.85rem;
    align-items: flex-start;
    padding: 0.8rem 0;
    border-bottom: 1px solid var(--color-border);
}
.timeline-item:last-child { border-bottom: none; }
.timeline-item .badge { margin-top: 0.15rem; min-width: 72px; text-align: center; }
.timeline-body p { margin: 0 0 0.15rem; }

/* ---------------------------------------------------------------- tabs */
.tabs {
    display: flex;
    gap: 0.4rem;
    margin-bottom: 1rem;
}

.tab-btn {
    padding: 0.5rem 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background: var(--color-surface);
    font: inherit;
    font-weight: 600;
    color: var(--color-muted);
    cursor: pointer;
}

.tab-btn.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
}

/* -------------------------------------------------------------- detail */
.detail-grid {
    display: grid;
    grid-template-columns: 180px 1fr;
    gap: 0.4rem 1rem;
    margin: 0;
}
.detail-grid dt { font-weight: 600; color: var(--color-muted); }
.detail-grid dd { margin: 0; }

/* --------------------------------------------------------------- flash */
.flash {
    padding: 0.7rem 1rem;
    border-radius: var(--radius);
    margin-bottom: 0.75rem;
    font-weight: 500;
}

.flash-success { background: #dcfce7; color: #166534; border: 1px solid #bbf7d0; }
.flash-error   { background: #fee2e2; color: #991b1b; border: 1px solid #fecaca; }
.flash-info    { background: #dbeafe; color: #1e40af; border: 1px solid #bfdbfe; }

.error-text { color: var(--color-danger-dark); }

/* ---------------------------------------------------------- auth pages */
.auth-body {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    min-height: 100vh;
    padding: 4rem 1rem;
}

.auth-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    width: 100%;
    max-width: 380px;
    padding: 2rem;
}

.auth-title { text-align: center; margin: 0 0 0.25rem; }
.auth-subtitle {
    text-align: center;
    color: var(--color-muted);
    margin: 0 0 1.25rem;
}

/* ----------------------------------------------------------- responsive */
@media (max-width: 760px) {
    .stats-grid { grid-template-columns: 1fr; }
    .two-col { grid-template-columns: 1fr; }
    .detail-grid { grid-template-columns: 1fr; }
    .detail-grid dt { margin-top: 0.5rem; }
    .topbar-user { margin-left: 0; }
    .page-head { flex-direction: column; align-items: flex-start; }
}