:root {
    --bg: #f3f4f6;
    --card: #ffffff;
    --text: #111827;
    --muted: #6b7280;
    --border: #e5e7eb;

    --primary: #1f2937;
    --primary-hover: #111827;
    --primary-light: #374151;

    --danger-bg: #fee2e2;
    --danger-text: #991b1b;

    --success-bg: #dcfce7;
    --success-text: #166534;

    --warning-bg: #fef3c7;
    --warning-text: #92400e;

    --info-bg: #dbeafe;
    --info-text: #1e40af;

    --radius: 16px;
    --shadow: 0 20px 60px rgba(17, 24, 39, 0.12);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    background: var(--bg);
    color: var(--text);
}

/* ======================================================
   LOGIN
====================================================== */

.login-body {
    min-height: 100vh;
    background: linear-gradient(135deg, #f9fafb 0%, #e5e7eb 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.login-card {
    width: 100%;
    max-width: 420px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 18px;
    box-shadow: var(--shadow);
    padding: 32px;
}

.login-brand {
    text-align: center;
    margin-bottom: 28px;
}

.login-brand-title {
    font-size: 26px;
    font-weight: 800;
    margin: 0 0 6px;
    letter-spacing: -0.03em;
}

.login-brand-subtitle {
    margin: 0;
    font-size: 14px;
    color: var(--muted);
}

/* ======================================================
   FORMS
====================================================== */

.field {
    margin-bottom: 16px;
}

label {
    display: block;
    font-size: 13px;
    font-weight: 700;
    margin-bottom: 7px;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="date"],
input[type="datetime-local"],
select,
textarea {
    width: 100%;
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 0 12px;
    font-size: 15px;
    outline: none;
    background: #fff;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="date"],
input[type="datetime-local"],
select {
    height: 44px;
}

textarea {
    padding-top: 10px;
    padding-bottom: 10px;
    min-height: 110px;
    resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
    border-color: #9ca3af;
    box-shadow: 0 0 0 3px rgba(156, 163, 175, 0.25);
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.form-grid-3 {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
}

.form-actions {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    margin-top: 20px;
}

/* ======================================================
   BUTTONS
====================================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 0 16px;
    border: 0;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 800;
    cursor: pointer;
    text-decoration: none;
    background: var(--primary);
    color: #fff;
}

.btn:hover {
    background: var(--primary-hover);
}

.btn-block {
    width: 100%;
}

.btn-secondary {
    background: #e5e7eb;
    color: #111827;
}

.btn-secondary:hover {
    background: #d1d5db;
}

.btn-danger {
    background: #991b1b;
    color: #fff;
}

.btn-danger:hover {
    background: #7f1d1d;
}

.btn-success {
    background: #166534;
    color: #fff;
}

.btn-success:hover {
    background: #14532d;
}

.btn-sm {
    min-height: 34px;
    padding: 0 12px;
    font-size: 13px;
}

/* ======================================================
   LAYOUT INTERNO
====================================================== */

.layout {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 250px 1fr;
}

.sidebar {
    background: #111827;
    color: #fff;
    padding: 22px 18px;
}

.sidebar-brand {
    font-size: 20px;
    font-weight: 800;
    margin-bottom: 28px;
    line-height: 1.2;
}

.nav-title {
    font-size: 11px;
    color: #9ca3af;
    text-transform: uppercase;
    letter-spacing: .08em;
    margin: 24px 0 8px;
}

.nav-link {
    display: block;
    color: #e5e7eb;
    text-decoration: none;
    padding: 10px 12px;
    border-radius: 10px;
    font-size: 14px;
    margin-bottom: 4px;
}

.nav-link:hover,
.nav-link.active {
    background: #1f2937;
    color: #fff;
}

.main {
    padding: 24px;
}

.topbar {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 22px;
}

.page-title {
    margin: 0;
    font-size: 26px;
    letter-spacing: -0.03em;
}

.page-subtitle {
    margin: 6px 0 0;
    color: var(--muted);
    font-size: 14px;
}

.user-box {
    text-align: right;
    font-size: 14px;
}

.user-name {
    font-weight: 800;
}

.user-role {
    color: var(--muted);
    font-size: 12px;
}

.logout {
    color: #991b1b;
    text-decoration: none;
    font-size: 12px;
    font-weight: 700;
}

/* ======================================================
   CARDS / PANELS
====================================================== */

.cards {
    display: grid;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 14px;
    margin-bottom: 22px;
}

.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px;
    min-height: 110px;
}

.card-label {
    font-size: 13px;
    color: var(--muted);
    margin-bottom: 12px;
}

.card-number {
    font-size: 32px;
    font-weight: 900;
    letter-spacing: -0.05em;
}

.panel {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px;
    margin-bottom: 22px;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    margin-bottom: 16px;
}

.panel-title {
    margin: 0;
    font-size: 18px;
}

/* ======================================================
   TABLES
====================================================== */

.table-wrapper {
    overflow-x: auto;
}

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

th {
    text-align: left;
    font-size: 12px;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: .05em;
    padding: 10px;
    border-bottom: 1px solid var(--border);
}

td {
    padding: 12px 10px;
    border-bottom: 1px solid var(--border);
    font-size: 14px;
    vertical-align: top;
}

tr:last-child td {
    border-bottom: 0;
}

/* ======================================================
   BADGES
====================================================== */

.badge {
    display: inline-block;
    padding: 4px 8px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 800;
    background: #e5e7eb;
    color: #374151;
}

.badge-success {
    background: var(--success-bg);
    color: var(--success-text);
}

.badge-warning {
    background: var(--warning-bg);
    color: var(--warning-text);
}

.badge-danger {
    background: var(--danger-bg);
    color: var(--danger-text);
}

.badge-info,
.badge-primary {
    background: var(--info-bg);
    color: var(--info-text);
}

.badge-secondary {
    background: #e5e7eb;
    color: #374151;
}

.badge-dark {
    background: #111827;
    color: #fff;
}

/* ======================================================
   FLASH
====================================================== */

.flash-wrapper {
    margin-bottom: 18px;
}

.flash {
    padding: 11px 13px;
    border-radius: 10px;
    font-size: 14px;
    margin-bottom: 10px;
}

.flash-danger {
    background: var(--danger-bg);
    color: var(--danger-text);
}

.flash-success {
    background: var(--success-bg);
    color: var(--success-text);
}

.flash-info {
    background: var(--info-bg);
    color: var(--info-text);
}

.flash-warning {
    background: var(--warning-bg);
    color: var(--warning-text);
}

/* ======================================================
   UTILITY
====================================================== */

.empty {
    color: var(--muted);
    padding: 18px 0;
    font-size: 14px;
}

.text-muted {
    color: var(--muted);
}

.text-right {
    text-align: right;
}

.mt-0 {
    margin-top: 0;
}

.mb-0 {
    margin-bottom: 0;
}

/* ======================================================
   RESPONSIVE
====================================================== */

@media (max-width: 1200px) {
    .cards {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

@media (max-width: 800px) {
    .layout {
        grid-template-columns: 1fr;
    }

    .sidebar {
        display: none;
    }

    .cards {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .topbar,
    .panel-header {
        align-items: flex-start;
        gap: 12px;
        flex-direction: column;
    }

    .user-box {
        text-align: left;
    }

    .form-grid,
    .form-grid-3 {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 520px) {
    .cards {
        grid-template-columns: 1fr;
    }

    .main {
        padding: 14px;
    }

    .login-card {
        padding: 24px;
    }
}