/* ============================================================
   DALA Technologies — App Cuentas
   Design System
   ============================================================ */

/* ── Variables ── */
:root {
    --color-bg: #f8f9fc;
    --color-surface: #ffffff;
    --color-sidebar: #0f172a;
    --color-sidebar-hover: #1e293b;
    --color-sidebar-active: #f59e0b;
    --color-text: #1e293b;
    --color-text-secondary: #64748b;
    --color-text-light: #94a3b8;
    --color-border: #e2e8f0;
    --color-accent: #f59e0b;
    --color-accent-hover: #d97706;
    --color-primary: #3b82f6;
    --color-primary-hover: #2563eb;
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-danger: #ef4444;
    --color-info: #6366f1;
    --sidebar-width: 260px;
    --header-height: 64px;
    --radius: 10px;
    --radius-sm: 6px;
    --shadow-sm: 0 1px 3px rgba(15,23,42,0.04);
    --shadow: 0 4px 16px rgba(15,23,42,0.06);
    --shadow-lg: 0 8px 32px rgba(15,23,42,0.08);
    --transition: 0.2s cubic-bezier(0.4,0,0.2,1);
    --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

/* ── Reset ── */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:15px;-webkit-text-size-adjust:100%}
body{font-family:var(--font);background:var(--color-bg);color:var(--color-text);line-height:1.6;min-height:100vh}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input,select,textarea{font-family:inherit;font-size:inherit}
table{border-collapse:collapse;width:100%}

/* ── Sidebar ── */
.sidebar{position:fixed;top:0;left:0;width:var(--sidebar-width);height:100vh;background:var(--color-sidebar);display:flex;flex-direction:column;z-index:100;transition:transform var(--transition)}
.sidebar-header{padding:28px 24px 20px;border-bottom:1px solid rgba(255,255,255,0.06)}
.sidebar-logo{height:40px;width:auto;filter:brightness(0) invert(1);opacity:0.9}
.sidebar-nav{flex:1;padding:16px 12px;overflow-y:auto}
.nav-item{display:flex;align-items:center;gap:12px;padding:10px 14px;border-radius:var(--radius-sm);color:rgba(255,255,255,0.6);font-size:0.9rem;font-weight:500;transition:all var(--transition);margin-bottom:2px}
.nav-item:hover{background:var(--color-sidebar-hover);color:rgba(255,255,255,0.9)}
.nav-item.active{background:rgba(245,158,11,0.12);color:var(--color-sidebar-active)}
.nav-icon{width:20px;height:20px;flex-shrink:0}
.sidebar-footer{padding:16px 12px;border-top:1px solid rgba(255,255,255,0.06)}
.user-info{display:flex;align-items:center;gap:12px;padding:10px 14px;margin-bottom:8px}
.user-avatar{width:36px;height:36px;border-radius:50%;background:var(--color-accent);color:var(--color-sidebar);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:0.85rem;flex-shrink:0}
.user-details{display:flex;flex-direction:column}
.user-name{color:rgba(255,255,255,0.9);font-size:0.85rem;font-weight:600}
.user-role{color:rgba(255,255,255,0.4);font-size:0.75rem}
.logout-link{color:rgba(255,255,255,0.4)!important}
.logout-link:hover{color:var(--color-danger)!important;background:rgba(239,68,68,0.08)!important}

/* ── Mobile Header ── */
.mobile-header{display:none;position:fixed;top:0;left:0;right:0;height:var(--header-height);background:var(--color-sidebar);z-index:90;align-items:center;padding:0 20px;gap:16px}
.mobile-logo{height:28px;filter:brightness(0) invert(1);opacity:0.9}
.menu-toggle{background:none;border:none;cursor:pointer;padding:8px;display:flex;flex-direction:column;gap:5px}
.menu-toggle span{display:block;width:22px;height:2px;background:rgba(255,255,255,0.8);border-radius:2px;transition:var(--transition)}
.sidebar-overlay{display:none;position:fixed;inset:0;background:rgba(15,23,42,0.5);z-index:95;opacity:0;transition:opacity var(--transition)}
.sidebar-overlay.show{display:block;opacity:1}

/* ── Main Content ── */
.main-content{margin-left:var(--sidebar-width);padding:32px 40px 60px;min-height:100vh}

/* ── Page Header ── */
.page-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:32px;flex-wrap:wrap;gap:16px}
.page-title{font-size:1.65rem;font-weight:700;color:var(--color-text);letter-spacing:-0.02em}
.page-subtitle{color:var(--color-text-secondary);font-size:0.9rem;margin-top:4px}

/* ── Cards ── */
.card{background:var(--color-surface);border-radius:var(--radius);box-shadow:var(--shadow-sm);border:1px solid var(--color-border);transition:box-shadow var(--transition)}
.card:hover{box-shadow:var(--shadow)}
.card-body{padding:24px}
.card-header{padding:20px 24px;border-bottom:1px solid var(--color-border);font-weight:600;font-size:1rem}

/* ── Stat Cards ── */
.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:20px;margin-bottom:32px}
.stat-card{background:var(--color-surface);border-radius:var(--radius);padding:24px;border:1px solid var(--color-border);transition:all var(--transition)}
.stat-card:hover{box-shadow:var(--shadow);transform:translateY(-2px)}
.stat-label{font-size:0.8rem;font-weight:600;text-transform:uppercase;letter-spacing:0.05em;color:var(--color-text-secondary);margin-bottom:8px}
.stat-value{font-size:2rem;font-weight:700;color:var(--color-text);letter-spacing:-0.02em}
.stat-value.accent{color:var(--color-accent)}
.stat-value.primary{color:var(--color-primary)}
.stat-value.success{color:var(--color-success)}
.stat-value.danger{color:var(--color-danger)}
.stat-footer{margin-top:12px;font-size:0.8rem;color:var(--color-text-light)}

/* ── Tables ── */
.table-container{overflow-x:auto;border-radius:var(--radius);border:1px solid var(--color-border);background:var(--color-surface)}
.data-table{width:100%}
.data-table thead{background:#f8fafc}
.data-table th{padding:12px 16px;text-align:left;font-size:0.78rem;font-weight:600;text-transform:uppercase;letter-spacing:0.04em;color:var(--color-text-secondary);border-bottom:1px solid var(--color-border);white-space:nowrap}
.data-table td{padding:14px 16px;border-bottom:1px solid #f1f5f9;font-size:0.9rem;vertical-align:middle}
.data-table tbody tr{transition:background var(--transition)}
.data-table tbody tr:hover{background:#fafbfe}
.data-table tbody tr:last-child td{border-bottom:none}

/* ── Badges ── */
.badge{display:inline-flex;align-items:center;padding:4px 10px;border-radius:20px;font-size:0.75rem;font-weight:600;letter-spacing:0.02em;white-space:nowrap}
.badge-info{background:rgba(99,102,241,0.1);color:#6366f1}
.badge-warning{background:rgba(245,158,11,0.1);color:#d97706}
.badge-success{background:rgba(16,185,129,0.1);color:#059669}
.badge-danger{background:rgba(239,68,68,0.1);color:#dc2626}
.badge-neutral{background:rgba(100,116,139,0.08);color:#64748b}

/* ── Buttons ── */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 20px;border-radius:var(--radius-sm);font-size:0.88rem;font-weight:600;border:none;cursor:pointer;transition:all var(--transition);white-space:nowrap;line-height:1.4}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--color-primary);color:#fff}
.btn-primary:hover{background:var(--color-primary-hover);box-shadow:0 4px 12px rgba(59,130,246,0.25)}
.btn-accent{background:var(--color-accent);color:#fff}
.btn-accent:hover{background:var(--color-accent-hover);box-shadow:0 4px 12px rgba(245,158,11,0.25)}
.btn-success{background:var(--color-success);color:#fff}
.btn-success:hover{background:#059669;box-shadow:0 4px 12px rgba(16,185,129,0.25)}
.btn-danger{background:var(--color-danger);color:#fff}
.btn-danger:hover{background:#dc2626}
.btn-outline{background:transparent;border:1.5px solid var(--color-border);color:var(--color-text-secondary)}
.btn-outline:hover{border-color:var(--color-text-secondary);color:var(--color-text)}
.btn-sm{padding:6px 14px;font-size:0.8rem}
.btn-ghost{background:transparent;color:var(--color-text-secondary);padding:8px 12px}
.btn-ghost:hover{background:rgba(0,0,0,0.04);color:var(--color-text)}

/* ── Forms ── */
.form-group{margin-bottom:20px}
.form-label{display:block;font-size:0.82rem;font-weight:600;color:var(--color-text);margin-bottom:6px;letter-spacing:0.01em}
.form-control{width:100%;padding:10px 14px;border:1.5px solid var(--color-border);border-radius:var(--radius-sm);font-size:0.9rem;color:var(--color-text);background:var(--color-surface);transition:border-color var(--transition),box-shadow var(--transition);outline:none}
.form-control:focus{border-color:var(--color-primary);box-shadow:0 0 0 3px rgba(59,130,246,0.1)}
.form-control::placeholder{color:var(--color-text-light)}
select.form-control{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%2364748b' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;padding-right:36px}
textarea.form-control{resize:vertical;min-height:80px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-hint{font-size:0.78rem;color:var(--color-text-light);margin-top:4px}

/* ── Alerts ── */
.alert{padding:14px 20px;border-radius:var(--radius-sm);font-size:0.88rem;font-weight:500;margin-bottom:24px;display:flex;align-items:center;justify-content:space-between;animation:slideDown 0.3s ease}
.alert-success{background:rgba(16,185,129,0.08);color:#059669;border:1px solid rgba(16,185,129,0.15)}
.alert-error{background:rgba(239,68,68,0.08);color:#dc2626;border:1px solid rgba(239,68,68,0.15)}
.alert-warning{background:rgba(245,158,11,0.08);color:#d97706;border:1px solid rgba(245,158,11,0.15)}
.alert-info{background:rgba(99,102,241,0.08);color:#6366f1;border:1px solid rgba(99,102,241,0.15)}
.alert-close{background:none;border:none;font-size:1.3rem;cursor:pointer;color:inherit;opacity:0.6;padding:0 4px}
.alert-close:hover{opacity:1}

/* ── Login Page ── */
.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#0f172a 0%,#1e293b 50%,#0f172a 100%);padding:20px}
.login-card{background:var(--color-surface);border-radius:16px;padding:48px 40px;width:100%;max-width:420px;box-shadow:0 20px 60px rgba(0,0,0,0.3)}
.login-logo{height:48px;margin:0 auto 32px;display:block}
.login-title{text-align:center;font-size:1.4rem;font-weight:700;margin-bottom:8px;color:var(--color-text)}
.login-subtitle{text-align:center;font-size:0.88rem;color:var(--color-text-secondary);margin-bottom:32px}
.login-btn{width:100%;padding:12px;font-size:0.95rem}
.login-error{text-align:center;color:var(--color-danger);font-size:0.85rem;margin-bottom:16px;font-weight:500}

/* ── Settlement Review Cards ── */
.review-card{background:var(--color-surface);border-radius:var(--radius);border:1px solid var(--color-border);margin-bottom:16px;overflow:hidden;transition:all var(--transition)}
.review-card:hover{box-shadow:var(--shadow)}
.review-card.pending{border-left:4px solid var(--color-text-light)}
.review-card.approved{border-left:4px solid var(--color-success)}
.review-card.modified{border-left:4px solid var(--color-warning)}
.review-card-body{padding:24px;display:flex;justify-content:space-between;align-items:flex-start;gap:20px}
.review-card-info{flex:1}
.review-card-info h4{font-size:1rem;font-weight:600;margin-bottom:6px}
.review-card-info p{font-size:0.85rem;color:var(--color-text-secondary);margin-bottom:4px}
.review-price{text-align:right;min-width:120px}
.review-price-label{font-size:0.72rem;text-transform:uppercase;letter-spacing:0.05em;color:var(--color-text-light);font-weight:600}
.review-price-value{font-size:1.8rem;font-weight:700;color:var(--color-text);line-height:1.2}
.review-price-original{font-size:0.82rem;color:var(--color-danger);text-decoration:line-through;margin-top:2px}
.review-card.approved .review-price-value{color:var(--color-success)}
.review-card.modified .review-price-value{color:var(--color-warning)}
.review-actions{padding:16px 24px;border-top:1px solid var(--color-border);display:flex;gap:8px;background:#fafbfe}
.review-observation{padding:12px 24px;background:#f8f9fc;border-top:1px solid var(--color-border);font-size:0.85rem;color:var(--color-text-secondary);font-style:italic}
.review-modify-form{padding:20px 24px;background:#f8f9fc;border-top:1px solid var(--color-border);display:none}
.review-modify-form.show{display:block;animation:slideDown 0.3s ease}

/* ── Settlement Summary ── */
.settlement-summary{background:var(--color-surface);border-radius:var(--radius);border:1px solid var(--color-border);padding:28px;margin-bottom:28px}
.settlement-summary-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;text-align:center}
.summary-item .summary-label{font-size:0.78rem;text-transform:uppercase;letter-spacing:0.05em;color:var(--color-text-light);font-weight:600;margin-bottom:6px}
.summary-item .summary-value{font-size:1.5rem;font-weight:700;letter-spacing:-0.01em}

/* ── Empty State ── */
.empty-state{text-align:center;padding:60px 20px;color:var(--color-text-secondary)}
.empty-state svg{width:48px;height:48px;margin:0 auto 16px;opacity:0.3}
.empty-state p{font-size:0.95rem;margin-bottom:20px}

/* ── Toolbar ── */
.toolbar{display:flex;align-items:center;gap:12px;margin-bottom:24px;flex-wrap:wrap}
.toolbar .form-control{max-width:280px}
.toolbar-right{margin-left:auto;display:flex;gap:8px}

/* ── Utilities ── */
.text-right{text-align:right}
.text-center{text-align:center}
.text-muted{color:var(--color-text-secondary)}
.text-success{color:var(--color-success)}
.text-danger{color:var(--color-danger)}
.text-accent{color:var(--color-accent)}
.mt-0{margin-top:0}.mt-1{margin-top:8px}.mt-2{margin-top:16px}.mt-3{margin-top:24px}.mt-4{margin-top:32px}
.mb-0{margin-bottom:0}.mb-1{margin-bottom:8px}.mb-2{margin-bottom:16px}.mb-3{margin-bottom:24px}
.gap-1{gap:8px}.gap-2{gap:16px}
.flex{display:flex}.flex-wrap{flex-wrap:wrap}.items-center{align-items:center}.justify-between{justify-content:space-between}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:20px}

/* ── Animations ── */
@keyframes slideDown{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}

/* ── Responsive ── */
@media(max-width:1024px){
    .sidebar{transform:translateX(-100%)}
    .sidebar.open{transform:translateX(0)}
    .mobile-header{display:flex}
    .main-content{margin-left:0;padding:calc(var(--header-height) + 20px) 20px 40px}
    .form-row{grid-template-columns:1fr}
    .settlement-summary-grid{grid-template-columns:1fr}
    .page-header{flex-direction:column;align-items:flex-start}
    .toolbar{flex-direction:column;align-items:stretch}
    .toolbar .form-control{max-width:100%}
    .toolbar-right{margin-left:0}
    .stats-grid{grid-template-columns:1fr 1fr}
    .review-card-body{flex-direction:column}
    .review-price{text-align:left}
}
@media(max-width:640px){
    .stats-grid{grid-template-columns:1fr}
    .grid-2{grid-template-columns:1fr}
}