/* ============================================================
   Perla Interiores y Más — Design System v1.0
   Premium Light POS
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

:root {
    --bg: #f5f5f7;
    --surface: #ffffff;
    --surface-hover: #fafafa;
    --surface-alt: #f8f8fa;
    --border: rgba(0,0,0,0.07);
    --border-focus: rgba(219,39,119,0.5);
    --primary: #db2777;
    --primary-dark: #be185d;
    --primary-light: #f472b6;
    --primary-bg: rgba(219,39,119,0.08);
    --success: #10b981;
    --success-bg: rgba(16,185,129,0.08);
    --warning: #f59e0b;
    --warning-bg: rgba(245,158,11,0.08);
    --danger: #ef4444;
    --danger-bg: rgba(239,68,68,0.08);
    --text: #1e1b2e;
    --text-secondary: #6b7280;
    --text-muted: #9ca3af;
    --radius: 12px;
    --radius-lg: 16px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 20px rgba(0,0,0,0.07);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.1);
    --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    font-size: 15px;
    -webkit-font-smoothing: antialiased;
}

/* ========================
   LOGIN PAGE
   ======================== */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #f5f5f7 0%, #eef0f4 50%, #f5f5f7 100%);
    padding: 20px;
}
.login-card {
    background: var(--surface);
    border-radius: 24px;
    padding: 48px 40px;
    width: 100%;
    max-width: 400px;
    box-shadow: var(--shadow-lg);
    text-align: center;
    border: 1px solid rgba(219,39,119,0.06);
}
.login-logo {
    font-size: 32px;
    font-weight: 900;
    color: var(--primary);
    margin-bottom: 4px;
    letter-spacing: -0.5px;
}
.login-logo span {
    color: var(--text);
    font-weight: 300;
}
.login-sub {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 36px;
    letter-spacing: 2px;
    text-transform: uppercase;
    font-weight: 500;
}
.pin-label {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 12px;
    font-weight: 600;
}
.pin-dots {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 32px;
}
.pin-dot {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    border: 2px solid var(--border);
    background: transparent;
    transition: all 0.2s;
}
.pin-dot.filled {
    background: var(--primary);
    border-color: var(--primary);
    box-shadow: 0 0 12px rgba(219,39,119,0.3);
}
.pin-dot.error {
    background: var(--danger);
    border-color: var(--danger);
    animation: shake 0.4s;
}
@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-6px); }
    75% { transform: translateX(6px); }
}
.numpad {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    max-width: 280px;
    margin: 0 auto;
}
.numpad-btn {
    height: 64px;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: var(--surface);
    color: var(--text);
    font-size: 22px;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: all var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}
.numpad-btn:hover {
    background: var(--primary-bg);
    border-color: rgba(219,39,119,0.15);
}
.numpad-btn:active {
    transform: scale(0.95);
    background: var(--primary);
    color: #fff;
}
.numpad-btn.clear {
    font-size: 14px;
    color: var(--text-muted);
}
.numpad-btn.enter {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
    font-size: 16px;
}
.numpad-btn.enter:hover {
    background: var(--primary-dark);
}
.login-error {
    color: var(--danger);
    font-size: 13px;
    margin-top: 16px;
    font-weight: 500;
    min-height: 20px;
}

/* ========================
   LAYOUT
   ======================== */
.app-layout {
    display: flex;
    height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 240px;
    background: var(--surface);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
}
.sidebar-brand {
    padding: 24px 20px;
    border-bottom: 1px solid var(--border);
}
.sidebar-brand h1 {
    font-size: 18px;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: -0.3px;
}
.sidebar-brand h1 span {
    font-weight: 400;
    color: var(--text-secondary);
}
.sidebar-brand p {
    font-size: 10px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-top: 2px;
}
.sidebar-nav {
    padding: 12px;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 13px 16px;
    border-radius: 10px;
    text-decoration: none;
    color: #000;
    font-size: 14px;
    font-weight: 900;
    transition: all var(--transition);
}
.nav-link svg {
    width: 20px;
    height: 20px;
    stroke-width: 2.2;
    stroke: #000;
    opacity: 1;
    transition: all var(--transition);
}
.nav-link:hover {
    background: var(--primary-bg);
    color: var(--text);
}
.nav-link:hover svg { opacity: 0.8; }
.nav-link.active {
    background: var(--primary);
    color: #fff;
    font-weight: 800;
    box-shadow: 0 4px 12px rgba(219,39,119,0.3);
}
.nav-link.active svg { stroke: #fff; opacity: 1; }

.sidebar-footer {
    padding: 16px;
    border-top: 1px solid var(--border);
}
.sidebar-user {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    color: var(--text-secondary);
}
.sidebar-user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 700;
    font-size: 12px;
}
.sidebar-user-name { font-weight: 600; color: var(--text); }
.sidebar-user-role { font-size: 11px; color: var(--text-muted); }

/* Main Area */
.main-area {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
}

/* ========================
   CARDS & STATS
   ======================== */
.page-title {
    font-size: 24px;
    font-weight: 800;
    color: var(--text);
    margin-bottom: 24px;
    letter-spacing: -0.5px;
}
.stats-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}
.stat-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    transition: all var(--transition);
}
.stat-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}
.stat-card .stat-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    margin-bottom: 12px;
}
.stat-card .stat-icon.purple { background: var(--primary-bg); }
.stat-card .stat-icon.green { background: var(--success-bg); }
.stat-card .stat-icon.orange { background: var(--warning-bg); }
.stat-card .stat-icon.red { background: var(--danger-bg); }
.stat-value {
    font-size: 28px;
    font-weight: 800;
    color: var(--text);
    letter-spacing: -1px;
}
.stat-label {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 4px;
    font-weight: 500;
}

/* ========================
   BUTTONS
   ======================== */
.btn {
    padding: 10px 18px;
    border: none;
    border-radius: 10px;
    font-size: 13px;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all var(--transition);
}
.btn:active { transform: scale(0.97); }
.btn-primary {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 2px 12px rgba(219,39,119,0.25);
}
.btn-primary:hover { background: var(--primary-dark); }
.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border);
}
.btn-ghost:hover { background: var(--surface-hover); }
.btn-success { background: var(--success); color: #fff; }
.btn-danger { background: var(--danger-bg); color: var(--danger); }
.btn-lg { padding: 14px 24px; font-size: 15px; border-radius: 12px; }

/* ========================
   TABLE
   ======================== */
.data-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--surface);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border);
}
.data-table th {
    text-align: left;
    padding: 14px 16px;
    font-size: 11px;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    border-bottom: 1px solid var(--border);
    background: var(--surface-alt);
}
.data-table td {
    padding: 14px 16px;
    font-size: 14px;
    border-bottom: 1px solid var(--border);
    color: var(--text);
}
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: var(--surface-hover); }

/* ========================
   RESPONSIVE — All Screens
   ======================== */

/* Large monitors (1920+) */
@media (min-width: 1600px) {
    body { font-size: 16px; }
    .main-area { padding: 32px 40px; }
    .sidebar { width: 260px; }
    .sidebar-brand h1 { font-size: 20px; }
    .nav-link { padding: 14px 18px; font-size: 15px; gap: 14px; }
    .nav-link svg { width: 22px; height: 22px; }
    .stat-value { font-size: 32px; }
    .stat-label { font-size: 13px; }
    .page-title { font-size: 28px; }
    .data-table th { font-size: 12px; padding: 14px 18px; }
    .data-table td { font-size: 15px; padding: 14px 18px; }
    .btn { padding: 12px 22px; font-size: 14px; }
    .btn-lg { padding: 16px 28px; font-size: 16px; }
}

/* Medium screens / small laptops (1024-1280) */
@media (max-width: 1280px) {
    .sidebar { width: 180px; }
    .sidebar-brand { padding: 16px 14px; }
    .sidebar-brand h1 { font-size: 15px; }
    .sidebar-brand p { font-size: 9px; }
    .nav-link { padding: 9px 12px; font-size: 12px; gap: 8px; }
    .nav-link svg { width: 17px; height: 17px; }
    .sidebar-footer { padding: 10px 12px; }
    .sidebar-user { font-size: 11px; }
    .main-area { padding: 16px; }
    .stats-row { gap: 10px; }
    .stat-value { font-size: 22px; }
    .stat-card { padding: 14px; }
    .stat-card .stat-icon { width: 34px; height: 34px; }
}

/* Short screens (720p height) */
@media (max-height: 800px) {
    .sidebar-brand { padding: 14px 14px; }
    .nav-link { padding: 8px 12px; }
    .sidebar-nav { padding: 8px; gap: 2px; }
    .sidebar-footer { padding: 8px 12px; }
}

/* Tablets (768-1024) */
@media (max-width: 1024px) {
    .sidebar { width: 64px; overflow: hidden; }
    .sidebar-brand h1, .sidebar-brand p,
    .sidebar-user-name, .sidebar-user-role,
    .sidebar-footer a { display: none; }
    .sidebar-brand { padding: 16px 12px; }
    .nav-link span, .nav-link:not(.active)::after { display: none; }
    .nav-link { padding: 12px; justify-content: center; gap: 0; }
    .sidebar-user { justify-content: center; }
    .sidebar-footer { padding: 12px; }
    .main-area { padding: 16px; }
    .page-title { font-size: 20px; }
    .stats-row { grid-template-columns: repeat(2, 1fr); gap: 10px; }
    .stat-value { font-size: 22px; }
    .data-table th, .data-table td { padding: 10px 12px; font-size: 13px; }
}

/* Mobile (< 768px) */
@media (max-width: 768px) {
    .app-layout { flex-direction: column; }
    .sidebar {
        width: 100%; height: auto; flex-direction: row; order: 2;
        position: fixed; bottom: 0; left: 0; z-index: 200;
        border-right: none; border-top: 1px solid var(--border);
        box-shadow: 0 -2px 10px rgba(0,0,0,0.05);
    }
    .sidebar-brand, .sidebar-footer { display: none; }
    .sidebar-nav {
        flex-direction: row; padding: 6px 8px; gap: 2px;
        overflow-x: auto; justify-content: space-around; width: 100%;
    }
    .nav-link {
        flex-direction: column; padding: 8px 12px; font-size: 10px;
        gap: 4px; border-radius: 8px; min-width: 56px; text-align: center;
    }
    .nav-link svg { width: 20px; height: 20px; }
    .nav-link.active { box-shadow: none; }

    .main-area {
        flex: 1; padding: 16px 12px; padding-bottom: 80px;
        overflow-y: auto; height: calc(100vh - 64px);
    }
    .page-title { font-size: 18px; margin-bottom: 16px; }
    .stats-row { grid-template-columns: repeat(2, 1fr); gap: 8px; }
    .stat-card { padding: 14px; }
    .stat-value { font-size: 20px; }
    .stat-label { font-size: 11px; }
    .stat-card .stat-icon { width: 32px; height: 32px; border-radius: 8px; font-size: 14px; margin-bottom: 8px; }

    .data-table th, .data-table td { padding: 10px 10px; font-size: 12px; }

    .login-card { padding: 32px 24px; }
    .login-logo { font-size: 26px; }
    .numpad { max-width: 240px; gap: 8px; }
    .numpad-btn { height: 56px; font-size: 20px; }

    .btn { padding: 10px 14px; font-size: 12px; }
    .btn-lg { padding: 12px 18px; font-size: 14px; }
}

/* Small phones (< 480px) */
@media (max-width: 480px) {
    .main-area { padding: 12px 8px; padding-bottom: 76px; }
    .page-title { font-size: 16px; }
    .stats-row { grid-template-columns: 1fr 1fr; gap: 6px; }
    .stat-card { padding: 12px; }
    .stat-value { font-size: 18px; }
    .nav-link { padding: 6px 8px; font-size: 9px; min-width: 48px; }
    .nav-link svg { width: 18px; height: 18px; }
}