:root {
    --bg-dark: #0f111a;
    --bg-card: rgba(25, 28, 41, 0.7);
    --bg-card-hover: rgba(35, 39, 56, 0.9);
    --primary: #4f46e5;
    --primary-hover: #4338ca;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --border: rgba(255, 255, 255, 0.08);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
    --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    display: block;
    min-height: 100vh;
    overflow-x: hidden;
    /* Subtle background gradient */
    background-image: radial-gradient(circle at top right, rgba(79, 70, 229, 0.15), transparent 400px),
                      radial-gradient(circle at bottom left, rgba(16, 185, 129, 0.1), transparent 400px);
}

/* Typography */
h1, h2, h3 { font-weight: 600; }
a { color: var(--text-main); text-decoration: none; }
.color-success { color: var(--success); }
.color-danger { color: var(--danger); }
.color-warning { color: var(--warning); }
.muted { color: var(--text-muted); font-size: 0.85rem; }

/* Utilities */
.flex-center { display: flex; align-items: center; }
.text-right { text-align: right; }

/* ===================================================
   LAYOUT — TOPBAR + PAGE WRAPPER
   =================================================== */

.page-wrapper {
    padding-top: 64px;
    min-height: 100vh;
}

/* Fixed top navigation bar */
.topbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 64px;
    background: rgba(15, 17, 26, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    z-index: 100;
    display: flex;
    align-items: center;
    padding: 0 28px;
    gap: 8px;
}

.topbar-logo {
    display: flex;
    align-items: center;
    flex-shrink: 0;
    margin-right: 12px;
}

.topbar-logo img {
    height: 40px;
    width: auto;
    object-fit: contain;
}

/* Horizontal navigation list */
.topbar-nav {
    display: flex;
    align-items: center;
    gap: 2px;
    list-style: none;
    padding: 0;
    margin: 0;
    flex: 1;
}

.topbar-nav li {
    padding: 8px 14px;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    font-weight: 500;
    font-size: 0.9rem;
    white-space: nowrap;
    user-select: none;
}

.topbar-nav li:hover {
    background: rgba(255, 255, 255, 0.06);
    color: var(--text-main);
}

.topbar-nav li.active {
    background: rgba(79, 70, 229, 0.15);
    color: var(--primary);
}

/* Right section: user info + logout + hamburger */
.topbar-right {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: auto;
    flex-shrink: 0;
}

/* User info chip */
.user-info {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 10px;
    border-radius: 8px;
    color: var(--text-muted);
    font-size: 0.85rem;
    cursor: pointer;
    transition: var(--transition);
}

.user-info:hover {
    background: rgba(255, 255, 255, 0.06);
    color: var(--text-main);
}

/* Role badges */
.user-role-badge {
    font-size: 0.7rem;
    padding: 2px 8px;
    border-radius: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.user-role-badge.role-admin {
    background: rgba(79, 70, 229, 0.2);
    color: #818cf8;
    border: 1px solid rgba(79, 70, 229, 0.3);
}

.user-role-badge.role-viewer {
    background: rgba(148, 163, 184, 0.15);
    color: var(--text-muted);
    border: 1px solid rgba(148, 163, 184, 0.3);
}

/* Hamburger button — hidden on desktop, shown on mobile */
.topbar-hamburger {
    display: none;
    background: none;
    border: none;
    color: var(--text-main);
    cursor: pointer;
    padding: 6px;
    border-radius: 8px;
    transition: var(--transition);
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.topbar-hamburger:hover {
    background: rgba(255, 255, 255, 0.08);
}

/* Main content area */
.main-content {
    padding: 16px 32px 32px 32px;
}

/* Page section header (title + actions) */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
}

.subtitle {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: 4px;
}

/* Tabs */
.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Data Table Panel */
.panel {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    backdrop-filter: blur(12px);
    overflow: hidden;
}

.panel-header {
    padding: 24px;
    border-bottom: 1px solid var(--border);
}

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

.data-table th, .data-table td {
    padding: 16px 24px;
    text-align: left;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.data-table th {
    color: var(--text-muted);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    background: rgba(0, 0, 0, 0.2);
}

.data-table tr:hover td { background: rgba(255, 255, 255, 0.03); }

/* Buttons */
.btn {
    padding: 10px 20px;
    border-radius: 8px;
    border: none;
    font-weight: 500;
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-primary { background: var(--primary); color: white; box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3); }
.btn-primary:hover { background: var(--primary-hover); transform: translateY(-1px); }
.btn-success { background: var(--success); color: white; box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3); }
.btn-success:hover { background: #059669; }
.btn-danger { background: var(--danger); color: white; box-shadow: 0 4px 12px rgba(239, 68, 68, 0.3); }
.btn-danger:hover { background: #dc2626; }
.btn-secondary { background: rgba(255, 255, 255, 0.1); color: var(--text-main); }
.btn-secondary:hover { background: rgba(255, 255, 255, 0.15); }

.btn-sm { padding: 6px 12px; font-size: 0.8rem; }
.btn-icon-only { padding: 8px; border-radius: 6px; }
.btn-danger-outline { background: transparent; border: 1px solid rgba(239, 68, 68, 0.5); color: var(--danger); }
.btn-danger-outline:hover { background: rgba(239, 68, 68, 0.1); border-color: var(--danger); }
.btn-edit { background: transparent; border: 1px solid rgba(255, 255, 255, 0.2); color: var(--text-main); }
.btn-edit:hover { background: rgba(255, 255, 255, 0.1); }

.action-btns { display: flex; gap: 8px; justify-content: flex-end; }



form .form-group { margin-bottom: 20px; }
form .form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }

label {
    display: block;
    margin-bottom: 8px;
    color: #e2e8f0;
    font-size: 0.9rem;
    font-weight: 500;
}

input[type="text"], input[type="password"], input[type="number"] {
    width: 100%;
    padding: 12px 16px;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    color: white;
    font-size: 0.95rem;
    transition: var(--transition);
}

input:focus { border-color: var(--primary); outline: none; box-shadow: 0 0 0 2px rgba(79, 70, 229, 0.2); }
input::placeholder { color: rgba(255, 255, 255, 0.3); }


/* Toggle Switch */
.switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
}
.switch input { opacity: 0; width: 0; height: 0; }
.slider {
    position: absolute;
    cursor: pointer;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: rgba(255,255,255,0.2);
    transition: .4s;
    border-radius: 34px;
}
.slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
}
input:checked + .slider { background-color: var(--primary); }
input:checked + .slider:before { transform: translateX(20px); }

/* Toast */
.toast {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: #1e293b;
    color: white;
    padding: 16px 24px;
    border-radius: 8px;
    border-left: 4px solid var(--primary);
    box-shadow: 0 10px 25px rgba(0,0,0,0.3);
    z-index: 9999;
    transform: translateY(100px);
    opacity: 0;
    transition: var(--transition);
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

/* Skeleton Loading Animation */
.skeleton {
    background: linear-gradient(90deg, rgba(255,255,255,0.05) 25%, rgba(255,255,255,0.1) 50%, rgba(255,255,255,0.05) 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
    border-radius: 4px;
}
@keyframes skeleton-loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* Reveal/eye icon fix for password fields on dark backgrounds (Edge/Chrome) */
input[type="password"]::-ms-reveal {
    filter: invert(1);
}
input[type="password"]::-webkit-contacts-auto-fill-button,
input[type="password"]::-webkit-credentials-auto-fill-button {
    filter: invert(1);
}

/* Date/time picker icons (calendar/clock) fix for dark backgrounds */
input[type="datetime-local"]::-webkit-calendar-picker-indicator,
input[type="date"]::-webkit-calendar-picker-indicator {
    filter: invert(1);
    cursor: pointer;
    opacity: 0.7;
    transition: var(--transition);
}
input[type="datetime-local"]::-webkit-calendar-picker-indicator:hover,
input[type="date"]::-webkit-calendar-picker-indicator:hover {
    opacity: 1;
}

/* Disable native password reveal button for Edge on inputs to avoid duplicate eye icons */
#api-key-display::-ms-reveal,
#login-password::-ms-reveal {
    display: none !important;
}

/* Prevent browser autofill from overriding input styles in dark mode */
input:-webkit-autofill,
input:-webkit-autofill:hover, 
input:-webkit-autofill:focus, 
input:-webkit-autofill:active {
    -webkit-box-shadow: 0 0 0 100px #131520 inset !important;
    box-shadow: 0 0 0 100px #131520 inset !important;
    -webkit-text-fill-color: var(--text-main) !important;
    transition: background-color 5000s ease-in-out 0s;
}


/* ===================================================
   RESPONSIVE — TABLE WRAPPER
   =================================================== */
.table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

/* ===================================================
   RESPONSIVE — TABLET (≤ 1024px)
   =================================================== */
@media (max-width: 1024px) {
    .topbar {
        padding: 0 20px;
    }

    .main-content {
        padding: 24px 28px;
    }

    .server-grid {
        gap: 16px;
    }
}

/* ===================================================
   RESPONSIVE — MOBILE (≤ 768px)
   =================================================== */
@media (max-width: 768px) {

    /* Show hamburger button */
    .topbar-hamburger {
        display: inline-flex;
    }

    /* Topbar nav becomes a full-width dropdown below the bar */
    .topbar-nav {
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        flex-direction: column;
        gap: 4px;
        background: rgba(15, 17, 26, 0.98);
        backdrop-filter: blur(16px);
        border-bottom: 1px solid var(--border);
        padding: 12px;
        box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
        z-index: 99;
        display: none;
    }

    .topbar-nav.mobile-open {
        display: flex;
    }

    .topbar-nav li {
        padding: 12px 16px;
        font-size: 0.95rem;
        width: 100%;
        border-radius: 10px;
    }

    /* Hide username and role badge text in topbar to save space */
    #current-user-display,
    .topbar-right .user-role-badge {
        display: none;
    }

    .topbar {
        padding: 0 16px;
    }

    .main-content {
        padding: 20px 16px;
    }

    /* Header wraps on mobile */
    header {
        flex-wrap: wrap;
        gap: 12px;
        margin-bottom: 20px;
        align-items: flex-start;
    }

    .header-titles {
        flex: 1 1 auto;
        min-width: 0;
    }

    .header-titles h1 {
        font-size: 1.3rem;
    }

    .header-actions {
        width: 100%;
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
    }

    .header-actions .btn {
        flex: 1 1 auto;
        justify-content: center;
    }

    /* Forms: single column on mobile */
    form .form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }

    /* Panel header flex-wrap */
    .panel-header {
        flex-wrap: wrap;
        gap: 12px;
    }

    /* Data table: compact */
    .data-table th,
    .data-table td {
        padding: 12px 14px;
        font-size: 0.82rem;
    }

    /* Action buttons */
    .action-btns {
        flex-wrap: wrap;
        gap: 6px;
    }

    /* ── Admin: Server Table ───────────────────────────
       Mobile: show Nome, Host/Porta, Ativo, Ações
       Hide: Domínio (col 3) e Intervalo (col 4)
    ─────────────────────────────────────────────────── */
    #servers .data-table th:nth-child(3),
    #servers .data-table td:nth-child(3),
    #servers .data-table th:nth-child(4),
    #servers .data-table td:nth-child(4) {
        display: none;
    }

    /* ── Admin: Users Table ────────────────────────────
       Mobile: hide Criado em (col 3)
    ─────────────────────────────────────────────────── */
    #users .data-table th:nth-child(3),
    #users .data-table td:nth-child(3) {
        display: none;
    }

    /* Action button cells: stack vertically for easier touch */
    .action-btns {
        flex-direction: column;
        align-items: stretch;
    }
    .action-btns .btn {
        justify-content: center;
    }

    /* Toast */
    .toast {
        bottom: 16px;
        right: 16px;
        left: 16px;
        text-align: center;
    }
}

/* ===================================================
   RESPONSIVE — SMALL MOBILE (≤ 480px)
   =================================================== */
@media (max-width: 480px) {
    .main-content {
        padding: 12px;
    }

    .topbar-logo img {
        height: 32px;
    }

    .server-card {
        padding: 16px;
    }

    header {
        margin-bottom: 16px;
    }

    .header-titles h1 {
        font-size: 1.15rem;
    }

    /* ── Admin: Server Table 480px ──────────────────────
       Also hide Ativo (col 5) — toggle hard to tap on tiny screens
    ─────────────────────────────────────────────────── */
    #servers .data-table th:nth-child(5),
    #servers .data-table td:nth-child(5) {
        display: none;
    }
}