/* =====================================================================
   calidad.salmeronai.es · Design System · Grupo Salmerón
   ===================================================================== */

:root {
    --corten:    #eb5e50;
    --iron:      #212122;
    --steel:     #20314b;
    --green-ox:  #233c39;
    --bronze:    #47313b;
    --off-white: #f5f4f2;
    --green-sft: #9bbdb9;
    --gray-100:  #f0f0ee;
    --gray-200:  #e0e0dc;
    --gray-400:  #999;
    --gray-600:  #666;
    --warn:      #c77d2a;
    --success:   #4c9b7e;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; color: var(--iron); background: var(--off-white); }

/* ===== LOGIN ===== */
.login-body { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 20px;
    background: linear-gradient(135deg, var(--steel) 0%, var(--iron) 100%); }
.login-card { background: #fff; padding: 40px; border-radius: 12px; width: 100%; max-width: 400px; box-shadow: 0 20px 60px rgba(0,0,0,.3); border-top: 4px solid var(--corten); }
.brand { text-align: center; margin-bottom: 32px; }
.brand-title { font-size: 26px; font-weight: 700; color: var(--steel); letter-spacing: -0.5px; }
.brand-sub { font-size: 13px; color: var(--gray-600); margin-top: 4px; }
.login-footer { text-align: center; font-size: 11px; color: var(--gray-400); margin-top: 24px; font-style: italic; }

/* ===== FORMS ===== */
.field { margin-bottom: 18px; }
.field label { display: block; font-size: 12px; text-transform: uppercase; letter-spacing: 0.5px; color: var(--gray-600); margin-bottom: 6px; font-weight: 600; }
.field input, .field select, .field textarea {
    width: 100%; padding: 10px 14px; border: 1px solid var(--gray-200); border-radius: 6px; font-size: 14px; background: #fff; transition: border 0.15s;
}
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--steel); }
.field small { display: block; color: var(--gray-400); font-size: 11px; margin-top: 3px; }
.error { color: var(--corten); font-size: 13px; margin-top: 12px; text-align: center; min-height: 18px; }

/* ===== BUTTONS ===== */
.btn { padding: 9px 18px; border-radius: 6px; border: 0; cursor: pointer; font-size: 14px; font-weight: 500; transition: all 0.15s; text-decoration: none; display: inline-block; }
.btn-primary { background: var(--steel); color: #fff; }
.btn-primary:hover { background: var(--corten); }
.btn-danger { background: var(--corten); color: #fff; }
.btn-danger:hover { background: #d04a3d; }
.btn-ghost { background: transparent; color: var(--steel); border: 1px solid var(--gray-200); }
.btn-ghost:hover { background: var(--gray-100); }
.btn-sm { padding: 5px 10px; font-size: 12px; }
.w-full { width: 100%; }

/* ===== LAYOUT ===== */
.app { display: grid; grid-template-columns: 240px 1fr; min-height: 100vh; }
.sidebar { background: var(--steel); color: var(--off-white); padding: 24px 0; }
.sidebar-brand { padding: 0 24px 24px; border-bottom: 1px solid rgba(255,255,255,.1); }
.sidebar-brand .t { font-size: 18px; font-weight: 700; letter-spacing: -0.3px; }
.sidebar-brand .s { font-size: 11px; opacity: 0.7; margin-top: 2px; }
.nav { padding: 16px 0; }
.nav a { display: flex; align-items: center; gap: 12px; padding: 12px 24px; color: rgba(255,255,255,.8); text-decoration: none; font-size: 14px; border-left: 3px solid transparent; transition: all 0.15s; }
.nav a:hover { background: rgba(255,255,255,.05); color: #fff; }
.nav a.active { background: rgba(235,94,80,.1); border-left-color: var(--corten); color: #fff; }
.nav .emoji { font-size: 16px; width: 20px; text-align: center; }
.sidebar-footer { position: absolute; bottom: 20px; left: 24px; font-size: 11px; opacity: 0.6; }

.main { padding: 28px 36px; overflow-x: auto; }
.header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; }
.header h1 { font-size: 26px; color: var(--steel); font-weight: 700; letter-spacing: -0.5px; }
.header .user { font-size: 13px; color: var(--gray-600); }
.header .user a { color: var(--corten); text-decoration: none; margin-left: 10px; }

/* ===== DASHBOARD ===== */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 16px; margin-bottom: 28px; }
.stat { background: #fff; padding: 20px; border-radius: 10px; border-left: 4px solid var(--steel); }
.stat .label { font-size: 11px; text-transform: uppercase; color: var(--gray-600); letter-spacing: 0.5px; font-weight: 600; }
.stat .value { font-size: 32px; font-weight: 700; color: var(--steel); margin-top: 6px; }
.stat .sub { font-size: 12px; color: var(--gray-600); margin-top: 4px; }
.stat.warn { border-left-color: var(--warn); }
.stat.warn .value { color: var(--warn); }
.stat.danger { border-left-color: var(--corten); }
.stat.danger .value { color: var(--corten); }
.stat.success { border-left-color: var(--success); }

/* ===== CARDS ===== */
.card { background: #fff; border-radius: 10px; padding: 20px; margin-bottom: 16px; border: 1px solid var(--gray-200); }
.card h2 { font-size: 16px; color: var(--steel); margin-bottom: 14px; border-bottom: 2px solid var(--corten); padding-bottom: 8px; display: inline-block; }

/* ===== TABLES ===== */
table.data { width: 100%; border-collapse: collapse; background: #fff; border-radius: 8px; overflow: hidden; font-size: 13px; }
table.data th { background: var(--steel); color: #fff; padding: 10px 12px; text-align: left; font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: 0.3px; }
table.data td { padding: 10px 12px; border-bottom: 1px solid var(--gray-100); }
table.data tr:hover { background: var(--off-white); }
table.data tr:last-child td { border-bottom: 0; }
.badge { display: inline-block; padding: 3px 8px; border-radius: 4px; font-size: 11px; font-weight: 600; }
.badge-ok   { background: #e8f5e9; color: var(--success); }
.badge-warn { background: #fff3cd; color: var(--warn); }
.badge-danger { background: #ffebee; color: var(--corten); }
.badge-grey { background: var(--gray-100); color: var(--gray-600); }

/* ===== TABS ===== */
.tabs { display: flex; border-bottom: 2px solid var(--gray-200); margin-bottom: 20px; }
.tab { padding: 10px 20px; cursor: pointer; border-bottom: 3px solid transparent; font-size: 14px; color: var(--gray-600); transition: all 0.15s; }
.tab:hover { color: var(--steel); }
.tab.active { color: var(--steel); border-bottom-color: var(--corten); font-weight: 600; }

/* ===== MODAL ===== */
.modal-backdrop { position: fixed; inset: 0; background: rgba(33,33,34,.6); display: none; align-items: center; justify-content: center; z-index: 100; padding: 20px; }
.modal-backdrop.active { display: flex; }
.modal { background: #fff; border-radius: 10px; max-width: 640px; width: 100%; max-height: 90vh; overflow-y: auto; }
.modal-header { padding: 20px; border-bottom: 1px solid var(--gray-200); display: flex; justify-content: space-between; align-items: center; }
.modal-header h3 { color: var(--steel); font-size: 18px; }
.modal-body { padding: 20px; }
.modal-footer { padding: 16px 20px; border-top: 1px solid var(--gray-200); display: flex; justify-content: flex-end; gap: 10px; }
.close-x { background: 0; border: 0; font-size: 24px; cursor: pointer; color: var(--gray-400); }
.close-x:hover { color: var(--corten); }

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-grid .full { grid-column: 1/-1; }

/* ===== TOOLBAR ===== */
.toolbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; gap: 12px; flex-wrap: wrap; }
.toolbar input[type=search] { padding: 8px 14px; border: 1px solid var(--gray-200); border-radius: 6px; font-size: 13px; min-width: 240px; }

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .app { grid-template-columns: 1fr; }
    .sidebar { display: none; }
    .main { padding: 16px; }
    .form-grid { grid-template-columns: 1fr; }
}