/* ============================================================
   admin.css — MailFlow Admin UI
   Aesthetic: Industrial-minimal with electric accents
   ============================================================ */

:root {
    --bg:        #0d0f14;
    --bg2:       #141720;
    --bg3:       #1c2030;
    --border:    #252a3a;
    --accent:    #00e5ff;
    --accent2:   #7c3aed;
    --success:   #22c55e;
    --warning:   #f59e0b;
    --danger:    #ef4444;
    --text:      #e2e8f0;
    --muted:     #64748b;
    --font-mono: 'Space Mono', monospace;
    --font-sans: 'DM Sans', sans-serif;
    --radius:    6px;
    --sidebar-w: 220px;
    --transition: 0.18s ease;
}

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

html, body {
    height: 100%;
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-sans);
    font-size: 14px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { opacity: .8; }

/* ── Layout ─────────────────────────────────────────────────── */
.layout {
    display: flex;
    min-height: 100vh;
}

/* ── Sidebar ─────────────────────────────────────────────────── */
.sidebar {
    width: var(--sidebar-w);
    background: var(--bg2);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 24px 20px 20px;
    border-bottom: 1px solid var(--border);
}

.logo-mark {
    font-size: 20px;
    color: var(--accent);
    line-height: 1;
}

.logo-text {
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 15px;
    letter-spacing: 1px;
    color: var(--text);
}

.sidebar-nav {
    flex: 1;
    padding: 16px 12px;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 12px;
    border-radius: var(--radius);
    color: var(--muted);
    font-size: 13.5px;
    font-weight: 500;
    transition: background var(--transition), color var(--transition);
    cursor: pointer;
}

.nav-item:hover { background: var(--bg3); color: var(--text); opacity: 1; }
.nav-item.active { background: rgba(0,229,255,.08); color: var(--accent); }
.nav-item.logout:hover { color: var(--danger); }

.nav-icon { font-size: 15px; width: 20px; text-align: center; }

.sidebar-footer {
    padding: 12px;
    border-top: 1px solid var(--border);
}

/* ── Main ────────────────────────────────────────────────────── */
.main {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.topbar {
    padding: 20px 28px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.page-title {
    font-family: var(--font-mono);
    font-size: 20px;
    font-weight: 700;
    letter-spacing: -.5px;
    color: var(--text);
}

.topbar-right { display: flex; flex-direction: column; gap: 8px; align-items: flex-end; }

.content {
    padding: 20px 28px 40px;
}

/* ── Cards ───────────────────────────────────────────────────── */
.card {
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    margin-bottom: 20px;
}

.card-title {
    font-family: var(--font-mono);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--muted);
    margin-bottom: 16px;
}

/* ── Stats grid ──────────────────────────────────────────────── */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 14px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: var(--accent);
}

.stat-card.purple::before { background: var(--accent2); }
.stat-card.green::before  { background: var(--success); }
.stat-card.amber::before  { background: var(--warning); }
.stat-card.red::before    { background: var(--danger); }

.stat-value {
    font-family: var(--font-mono);
    font-size: 28px;
    font-weight: 700;
    color: var(--text);
    line-height: 1;
    margin-bottom: 6px;
}

.stat-label {
    font-size: 12px;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* ── Table ───────────────────────────────────────────────────── */
.table-wrap {
    overflow-x: auto;
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13.5px;
}

thead th {
    background: var(--bg3);
    color: var(--muted);
    font-family: var(--font-mono);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 10px 14px;
    text-align: left;
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}

tbody tr {
    border-bottom: 1px solid var(--border);
    transition: background var(--transition);
}
tbody tr:last-child { border-bottom: none; }
tbody tr:hover { background: var(--bg3); }

tbody td {
    padding: 11px 14px;
    color: var(--text);
    vertical-align: middle;
}

/* ── Badges ──────────────────────────────────────────────────── */
.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 100px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: .5px;
    text-transform: uppercase;
}
.badge-success   { background: rgba(34,197,94,.15);  color: var(--success); }
.badge-warning   { background: rgba(245,158,11,.15); color: var(--warning); }
.badge-danger    { background: rgba(239,68,68,.15);  color: var(--danger);  }
.badge-info      { background: rgba(0,229,255,.12);  color: var(--accent);  }
.badge-muted     { background: var(--bg3); color: var(--muted); }
.badge-purple    { background: rgba(124,58,237,.15); color: #a78bfa; }

/* ── Buttons ─────────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: var(--radius);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    border: none;
    transition: opacity var(--transition), transform var(--transition);
    white-space: nowrap;
    text-decoration: none;
    font-family: var(--font-sans);
    line-height: 1;
}
.btn:hover  { opacity: .85; transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn-primary { background: var(--accent);  color: #000; font-weight: 600; }
.btn-danger  { background: var(--danger);  color: #fff; }
.btn-success { background: var(--success); color: #000; }
.btn-ghost   { background: var(--bg3); color: var(--text); border: 1px solid var(--border); }
.btn-sm      { padding: 5px 11px; font-size: 12px; }

/* ── Forms ───────────────────────────────────────────────────── */
.form-group  { margin-bottom: 16px; }
label        { display: block; font-size: 12px; color: var(--muted); margin-bottom: 6px; text-transform: uppercase; letter-spacing: .8px; }

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="datetime-local"],
select,
textarea {
    width: 100%;
    background: var(--bg3);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 9px 12px;
    border-radius: var(--radius);
    font-size: 13.5px;
    font-family: var(--font-sans);
    outline: none;
    transition: border-color var(--transition);
}
input:focus, select:focus, textarea:focus { border-color: var(--accent); }

textarea { resize: vertical; min-height: 120px; }
select option { background: var(--bg2); }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-row-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }

/* ── Alerts ──────────────────────────────────────────────────── */
.alert {
    padding: 10px 16px;
    border-radius: var(--radius);
    font-size: 13px;
    border: 1px solid transparent;
}
.alert-success { background: rgba(34,197,94,.1);  border-color: rgba(34,197,94,.25); color: var(--success); }
.alert-error   { background: rgba(239,68,68,.1);  border-color: rgba(239,68,68,.25); color: var(--danger); }
.alert-warning { background: rgba(245,158,11,.1); border-color: rgba(245,158,11,.25); color: var(--warning); }
.alert-info    { background: rgba(0,229,255,.08); border-color: rgba(0,229,255,.2); color: var(--accent); }

/* ── Pagination ──────────────────────────────────────────────── */
.pagination { display: flex; gap: 6px; align-items: center; margin-top: 16px; }
.page-link {
    padding: 5px 11px;
    border-radius: var(--radius);
    background: var(--bg3);
    border: 1px solid var(--border);
    color: var(--muted);
    font-size: 13px;
    transition: all var(--transition);
}
.page-link:hover { border-color: var(--accent); color: var(--accent); opacity: 1; }
.page-link.active { background: var(--accent); color: #000; border-color: var(--accent); font-weight: 600; }

/* ── Modal ───────────────────────────────────────────────────── */
.modal-backdrop {
    display: none;
    position: fixed; inset: 0;
    background: rgba(0,0,0,.6);
    backdrop-filter: blur(4px);
    z-index: 999;
    justify-content: center;
    align-items: center;
}
.modal-backdrop.open { display: flex; }

.modal {
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 28px;
    width: 90%;
    max-width: 560px;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
}

.modal-title {
    font-family: var(--font-mono);
    font-size: 15px;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
}

.modal-close {
    position: absolute; top: 16px; right: 16px;
    background: none; border: none;
    color: var(--muted); font-size: 18px;
    cursor: pointer; line-height: 1;
}
.modal-close:hover { color: var(--text); }

/* ── Toolbar ─────────────────────────────────────────────────── */
.toolbar {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}
.toolbar-search {
    flex: 1;
    min-width: 200px;
}
.toolbar-search input { background: var(--bg2); }

/* ── Progress bar ────────────────────────────────────────────── */
.progress {
    height: 6px;
    background: var(--bg3);
    border-radius: 100px;
    overflow: hidden;
}
.progress-bar {
    height: 100%;
    background: var(--accent);
    border-radius: 100px;
    transition: width 0.4s ease;
}

/* ── Login page ──────────────────────────────────────────────── */
.login-wrap {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg);
    background-image:
        radial-gradient(ellipse at 20% 20%, rgba(0,229,255,.06) 0%, transparent 60%),
        radial-gradient(ellipse at 80% 80%, rgba(124,58,237,.06) 0%, transparent 60%);
}

.login-box {
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 40px;
    width: 380px;
}

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

.login-logo .logo-mark { font-size: 32px; display: block; margin-bottom: 8px; }
.login-logo .logo-text { font-family: var(--font-mono); font-size: 18px; font-weight: 700; }

/* ── Code blocks ─────────────────────────────────────────────── */
code {
    font-family: var(--font-mono);
    font-size: 12px;
    background: var(--bg3);
    padding: 2px 6px;
    border-radius: 3px;
    color: var(--accent);
}

/* ── Misc ────────────────────────────────────────────────────── */
.text-muted   { color: var(--muted); }
.text-success { color: var(--success); }
.text-danger  { color: var(--danger); }
.text-warning { color: var(--warning); }
.text-accent  { color: var(--accent); }
.mono         { font-family: var(--font-mono); }
.flex         { display: flex; }
.gap-2        { gap: 8px; }
.gap-3        { gap: 12px; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.mt-1 { margin-top: 6px; }
.mt-2 { margin-top: 12px; }
.mt-3 { margin-top: 20px; }
.mb-1 { margin-bottom: 6px; }
.mb-2 { margin-bottom: 12px; }
.mb-3 { margin-bottom: 20px; }
hr { border: none; border-top: 1px solid var(--border); margin: 20px 0; }

/* ── Responsive ──────────────────────────────────────────────── */
/* ── Mobile Overlay ──────────────────────────────────────────── */
.mob-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.65);
    backdrop-filter: blur(2px);
    z-index: 999;
    opacity: 0;
    transition: opacity .25s ease;
}
.mob-overlay.show {
    display: block;
    opacity: 1;
}

/* ── Hamburger Button ─────────────────────────────────────────── */
.mob-hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 8px 10px;
    cursor: pointer;
    flex-shrink: 0;
    margin-right: 12px;
}
.mob-hamburger span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: all .2s ease;
}
.mob-hamburger:hover span { background: var(--accent); }

/* ── Sidebar Close Button (mobile) ───────────────────────────── */
.sidebar-close {
    display: none;
    position: absolute;
    top: 14px;
    right: 14px;
    background: var(--bg3);
    border: 1px solid var(--border);
    color: var(--muted);
    width: 30px;
    height: 30px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 13px;
    align-items: center;
    justify-content: center;
    transition: all .15s;
}
.sidebar-close:hover { color: var(--text); background: var(--border); }

/* ── Mobile Responsive ───────────────────────────────────────── */
@media (max-width: 768px) {
    /* Layout: sidebar taken out of flow via position:fixed */
    .layout { display: block !important; }
    .main { min-width: 0; width: 100%; }

    /* Sidebar — fixed, slides in from left */
    .sidebar {
        position: fixed !important;
        left: -260px !important;
        top: 0 !important;
        height: 100dvh !important;
        width: 240px !important;
        z-index: 1000 !important;
        transition: left .28s cubic-bezier(.4,0,.2,1) !important;
        overflow-y: auto !important;
        box-shadow: none !important;
    }
    .sidebar.open {
        left: 0 !important;
        box-shadow: 8px 0 40px rgba(0,0,0,.5) !important;
    }
    .sidebar-close { display: flex !important; }

    /* Show hamburger */
    .mob-hamburger { display: flex !important; }

    /* Topbar — sticky at top */
    .topbar {
        padding: 12px 14px !important;
        position: sticky !important;
        top: 0 !important;
        z-index: 100 !important;
        background: var(--bg) !important;
        border-bottom: 1px solid var(--border) !important;
        align-items: center !important;
    }
    .page-title {
        font-size: 15px !important;
        flex: 1 !important;
        white-space: nowrap !important;
        overflow: hidden !important;
        text-overflow: ellipsis !important;
    }
    .topbar-right { gap: 6px; flex-direction: row; align-items: center; }

    /* Content */
    .content { padding: 12px 14px; }

    /* Grids */
    .form-row, .form-row-3 { grid-template-columns: 1fr; }
    .stats-grid            { grid-template-columns: 1fr 1fr; }

    /* Tables */
    .table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }

    /* Modals */
    .modal-backdrop .modal {
        width: 96vw !important;
        max-width: 96vw !important;
        max-height: 92dvh !important;
        overflow-y: auto !important;
        margin: 4dvh auto !important;
        border-radius: 14px !important;
    }

    /* Alerts */
    .alert { font-size: 11px; padding: 6px 10px; }

    /* Toolbar */
    .toolbar { flex-wrap: wrap; gap: 8px; }
}

@media (max-width: 480px) {
    .stats-grid { grid-template-columns: 1fr; }
    .content    { padding: 10px; }
    .page-title { font-size: 13px !important; }
    .btn        { padding: 7px 11px; font-size: 12px; }
}