/* ============================================================
   MailSense Design System v1.0
   Clean, modern SaaS aesthetic with depth and polish
   ============================================================ */

:root {
    /* Brand palette */
    --ms-primary: #2563eb;
    --ms-primary-light: #3b82f6;
    --ms-primary-dark: #1d4ed8;
    --ms-primary-50: #eff6ff;
    --ms-primary-100: #dbeafe;

    --ms-accent: #06b6d4;
    --ms-accent-light: #22d3ee;

    /* Semantic */
    --ms-success: #10b981;
    --ms-success-light: #d1fae5;
    --ms-warning: #f59e0b;
    --ms-warning-light: #fef3c7;
    --ms-danger: #ef4444;
    --ms-danger-light: #fee2e2;
    --ms-info: #6366f1;
    --ms-info-light: #e0e7ff;

    /* Neutrals */
    --ms-bg: #f8fafc;
    --ms-surface: #ffffff;
    --ms-surface-raised: #ffffff;
    --ms-border: #e2e8f0;
    --ms-border-light: #f1f5f9;
    --ms-text: #0f172a;
    --ms-text-secondary: #64748b;
    --ms-text-muted: #94a3b8;

    /* Typography */
    --ms-font: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    --ms-font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    /* Shadows */
    --ms-shadow-sm: 0 1px 2px rgba(0,0,0,.04), 0 1px 3px rgba(0,0,0,.06);
    --ms-shadow: 0 1px 3px rgba(0,0,0,.06), 0 4px 12px rgba(0,0,0,.04);
    --ms-shadow-lg: 0 4px 6px rgba(0,0,0,.04), 0 10px 24px rgba(0,0,0,.08);
    --ms-shadow-xl: 0 8px 30px rgba(0,0,0,.12);

    /* Radii */
    --ms-radius: 10px;
    --ms-radius-sm: 6px;
    --ms-radius-lg: 16px;
    --ms-radius-xl: 20px;

    /* Transitions */
    --ms-transition: 0.2s cubic-bezier(.4,0,.2,1);
}

/* ---- Reset & Base ---- */
*, *::before, *::after { box-sizing: border-box; }

html { height: 100%; scroll-behavior: smooth; }

body {
    font-family: var(--ms-font);
    background: var(--ms-bg);
    color: var(--ms-text);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    margin: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-size: 14.5px;
    line-height: 1.6;
}

main { flex: 1 0 auto; }

a { color: var(--ms-primary); text-decoration: none; transition: color var(--ms-transition); }
a:hover { color: var(--ms-primary-dark); }

/* ---- Navbar ---- */
.ms-navbar {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    border-bottom: 1px solid rgba(255,255,255,.06);
    padding: .5rem 0;
    position: sticky;
    top: 0;
    z-index: 1040;
    backdrop-filter: blur(12px);
}

.ms-navbar .navbar-brand img { height: 38px; transition: transform var(--ms-transition); }
.ms-navbar .navbar-brand img:hover { transform: scale(1.03); }

.ms-navbar .nav-link {
    color: rgba(255,255,255,.7) !important;
    font-weight: 500;
    font-size: .875rem;
    padding: .5rem .85rem !important;
    border-radius: var(--ms-radius-sm);
    transition: all var(--ms-transition);
    position: relative;
}

.ms-navbar .nav-link:hover,
.ms-navbar .nav-link.active {
    color: #fff !important;
    background: rgba(255,255,255,.08);
}

.ms-navbar .nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 2px;
    background: var(--ms-primary-light);
    border-radius: 2px;
}

.ms-nav-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 18px;
    height: 18px;
    padding: 0 5px;
    font-size: .65rem;
    font-weight: 700;
    background: var(--ms-danger);
    color: #fff;
    border-radius: 99px;
    margin-left: 6px;
    animation: pulse-badge 2s infinite;
}

@keyframes pulse-badge {
    0%, 100% { box-shadow: 0 0 0 0 rgba(239,68,68,.4); }
    50% { box-shadow: 0 0 0 6px rgba(239,68,68,0); }
}

.ms-tenant-badge {
    background: rgba(255,255,255,.06);
    border: 1px solid rgba(255,255,255,.1);
    border-radius: var(--ms-radius-sm);
    padding: .25rem .65rem;
    font-size: .75rem;
    color: rgba(255,255,255,.5);
}

.ms-tenant-badge strong { color: rgba(255,255,255,.85); }

/* ---- Page Content ---- */
.ms-page { padding: 1.75rem 0 3rem; }

.ms-page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.ms-page-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--ms-text);
    margin: 0;
    letter-spacing: -.02em;
}

/* ---- Cards ---- */
.ms-card {
    background: var(--ms-surface);
    border: 1px solid var(--ms-border);
    border-radius: var(--ms-radius-lg);
    box-shadow: var(--ms-shadow-sm);
    transition: box-shadow var(--ms-transition), transform var(--ms-transition);
    overflow: hidden;
}

.ms-card:hover { box-shadow: var(--ms-shadow); }

.ms-card-header {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--ms-border-light);
    font-weight: 600;
    font-size: .9rem;
    display: flex;
    align-items: center;
    gap: .5rem;
}

.ms-card-body { padding: 1.25rem; }

.ms-card-footer {
    padding: .75rem 1.25rem;
    border-top: 1px solid var(--ms-border-light);
    background: var(--ms-bg);
}

/* ---- Stat Cards ---- */
.ms-stat-card {
    background: var(--ms-surface);
    border: 1px solid var(--ms-border);
    border-radius: var(--ms-radius-lg);
    padding: 1.25rem;
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    transition: all var(--ms-transition);
    position: relative;
    overflow: hidden;
}

.ms-stat-card:hover {
    box-shadow: var(--ms-shadow);
    transform: translateY(-1px);
}

.ms-stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 3px;
    height: 100%;
    border-radius: 0 3px 3px 0;
}

.ms-stat-card.stat-primary::before { background: var(--ms-primary); }
.ms-stat-card.stat-success::before { background: var(--ms-success); }
.ms-stat-card.stat-danger::before { background: var(--ms-danger); }
.ms-stat-card.stat-warning::before { background: var(--ms-warning); }
.ms-stat-card.stat-info::before { background: var(--ms-info); }

.ms-stat-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--ms-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.ms-stat-icon.bg-primary { background: var(--ms-primary-50); color: var(--ms-primary); }
.ms-stat-icon.bg-success { background: var(--ms-success-light); color: var(--ms-success); }
.ms-stat-icon.bg-danger { background: var(--ms-danger-light); color: var(--ms-danger); }
.ms-stat-icon.bg-warning { background: var(--ms-warning-light); color: var(--ms-warning); }
.ms-stat-icon.bg-info { background: var(--ms-info-light); color: var(--ms-info); }

.ms-stat-content { flex: 1; min-width: 0; }

.ms-stat-value {
    font-size: 1.65rem;
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -.03em;
    color: var(--ms-text);
}

.ms-stat-label {
    font-size: .8rem;
    color: var(--ms-text-secondary);
    margin-top: 2px;
}

/* ---- Status dots ---- */
.ms-status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
    flex-shrink: 0;
}

.ms-status-dot.status-success { background: var(--ms-success); box-shadow: 0 0 0 3px rgba(16,185,129,.2); }
.ms-status-dot.status-warning { background: var(--ms-warning); box-shadow: 0 0 0 3px rgba(245,158,11,.2); }
.ms-status-dot.status-danger { background: var(--ms-danger); box-shadow: 0 0 0 3px rgba(239,68,68,.2); animation: blink 1.5s infinite; }
.ms-status-dot.status-secondary { background: var(--ms-text-muted); box-shadow: 0 0 0 3px rgba(148,163,184,.2); }

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: .4; }
}

/* ---- Tables ---- */
.ms-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
}

.ms-table thead th {
    background: var(--ms-bg);
    border-bottom: 2px solid var(--ms-border);
    padding: .75rem 1rem;
    font-size: .75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .05em;
    color: var(--ms-text-secondary);
    white-space: nowrap;
}

.ms-table tbody td {
    padding: .85rem 1rem;
    border-bottom: 1px solid var(--ms-border-light);
    vertical-align: middle;
}

.ms-table tbody tr { transition: background var(--ms-transition); }
.ms-table tbody tr:hover { background: rgba(37,99,235,.02); }
.ms-table tbody tr:last-child td { border-bottom: none; }

/* ---- Buttons ---- */
.ms-btn {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    padding: .5rem 1rem;
    font-family: var(--ms-font);
    font-size: .85rem;
    font-weight: 600;
    border: none;
    border-radius: var(--ms-radius-sm);
    cursor: pointer;
    transition: all var(--ms-transition);
    text-decoration: none;
    line-height: 1.4;
}

.ms-btn:hover { transform: translateY(-1px); box-shadow: var(--ms-shadow); }
.ms-btn:active { transform: translateY(0); }

.ms-btn-primary { background: var(--ms-primary); color: #fff; }
.ms-btn-primary:hover { background: var(--ms-primary-dark); color: #fff; }

.ms-btn-success { background: var(--ms-success); color: #fff; }
.ms-btn-success:hover { background: #059669; color: #fff; }

.ms-btn-danger { background: var(--ms-danger); color: #fff; }
.ms-btn-danger:hover { background: #dc2626; color: #fff; }

.ms-btn-warning { background: var(--ms-warning); color: #fff; }
.ms-btn-warning:hover { background: #d97706; color: #fff; }

.ms-btn-ghost {
    background: transparent;
    color: var(--ms-text-secondary);
    border: 1px solid var(--ms-border);
}
.ms-btn-ghost:hover { background: var(--ms-bg); color: var(--ms-text); border-color: var(--ms-text-muted); }

.ms-btn-sm { padding: .35rem .75rem; font-size: .78rem; }
.ms-btn-xs { padding: .2rem .5rem; font-size: .72rem; }

.ms-btn-icon {
    width: 32px;
    height: 32px;
    padding: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--ms-radius-sm);
    background: transparent;
    border: 1px solid var(--ms-border);
    color: var(--ms-text-secondary);
    cursor: pointer;
    transition: all var(--ms-transition);
}
.ms-btn-icon:hover { background: var(--ms-bg); color: var(--ms-text); }
.ms-btn-icon.danger:hover { background: var(--ms-danger-light); color: var(--ms-danger); border-color: transparent; }
.ms-btn-icon.warning:hover { background: var(--ms-warning-light); color: var(--ms-warning); border-color: transparent; }

/* ---- Forms ---- */
.ms-input {
    width: 100%;
    padding: .6rem .85rem;
    font-family: var(--ms-font);
    font-size: .875rem;
    border: 1px solid var(--ms-border);
    border-radius: var(--ms-radius-sm);
    background: var(--ms-surface);
    color: var(--ms-text);
    transition: all var(--ms-transition);
    outline: none;
}

.ms-input:focus {
    border-color: var(--ms-primary);
    box-shadow: 0 0 0 3px rgba(37,99,235,.12);
}

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

.ms-label {
    display: block;
    font-size: .8rem;
    font-weight: 600;
    color: var(--ms-text-secondary);
    margin-bottom: .35rem;
    letter-spacing: .01em;
}

.ms-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2364748b' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right .75rem center;
    padding-right: 2rem;
}

.ms-form-group { margin-bottom: 1rem; }

/* ---- Badges ---- */
.ms-badge {
    display: inline-flex;
    align-items: center;
    padding: .2rem .55rem;
    font-size: .72rem;
    font-weight: 600;
    border-radius: 99px;
    letter-spacing: .01em;
}

.ms-badge-success { background: var(--ms-success-light); color: #065f46; }
.ms-badge-danger { background: var(--ms-danger-light); color: #991b1b; }
.ms-badge-warning { background: var(--ms-warning-light); color: #92400e; }
.ms-badge-info { background: var(--ms-info-light); color: #3730a3; }
.ms-badge-secondary { background: #f1f5f9; color: var(--ms-text-secondary); }

/* ---- Alerts / Flash messages ---- */
.ms-flash {
    display: flex;
    align-items: center;
    gap: .75rem;
    padding: .85rem 1rem;
    border-radius: var(--ms-radius);
    margin-bottom: .75rem;
    font-size: .875rem;
    font-weight: 500;
    border: 1px solid;
    animation: slideIn .3s ease;
}

@keyframes slideIn {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
}

.ms-flash-success { background: var(--ms-success-light); border-color: rgba(16,185,129,.3); color: #065f46; }
.ms-flash-danger { background: var(--ms-danger-light); border-color: rgba(239,68,68,.3); color: #991b1b; }
.ms-flash-warning { background: var(--ms-warning-light); border-color: rgba(245,158,11,.3); color: #92400e; }
.ms-flash-info { background: var(--ms-info-light); border-color: rgba(99,102,241,.3); color: #3730a3; }

.ms-flash .btn-close { filter: none; opacity: .5; }

/* ---- Alert list items ---- */
.ms-alert-item {
    display: flex;
    align-items: flex-start;
    gap: .75rem;
    padding: .85rem 0;
    border-bottom: 1px solid var(--ms-border-light);
}

.ms-alert-item:last-child { border-bottom: none; }

.ms-alert-item .alert-icon {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    background: var(--ms-danger-light);
    color: var(--ms-danger);
    font-size: .85rem;
}

.ms-alert-item .alert-content { flex: 1; min-width: 0; }
.ms-alert-item .alert-time { font-size: .72rem; color: var(--ms-text-muted); }
.ms-alert-item .alert-text { font-size: .85rem; color: var(--ms-text); margin-top: 2px; }

/* ---- Health Grid ---- */
.ms-health-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: .75rem;
}

.ms-health-item {
    display: flex;
    align-items: center;
    gap: .75rem;
    padding: .85rem 1rem;
    border: 1px solid var(--ms-border-light);
    border-radius: var(--ms-radius);
    background: var(--ms-surface);
    transition: all var(--ms-transition);
}

.ms-health-item:hover { border-color: var(--ms-border); box-shadow: var(--ms-shadow-sm); }

.ms-health-item .info { flex: 1; min-width: 0; }
.ms-health-item .name { font-weight: 600; font-size: .85rem; color: var(--ms-text); }
.ms-health-item .detail { font-size: .75rem; color: var(--ms-text-muted); }

/* ---- Pagination ---- */
.ms-pagination {
    display: flex;
    align-items: center;
    gap: .25rem;
    justify-content: center;
    margin-top: 1.5rem;
}

.ms-pagination a, .ms-pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 34px;
    height: 34px;
    padding: 0 .5rem;
    font-size: .8rem;
    font-weight: 500;
    border-radius: var(--ms-radius-sm);
    border: 1px solid var(--ms-border);
    background: var(--ms-surface);
    color: var(--ms-text-secondary);
    transition: all var(--ms-transition);
    text-decoration: none;
}

.ms-pagination a:hover { background: var(--ms-primary-50); border-color: var(--ms-primary); color: var(--ms-primary); }
.ms-pagination .active { background: var(--ms-primary); color: #fff; border-color: var(--ms-primary); pointer-events: none; }
.ms-pagination .disabled { opacity: .4; pointer-events: none; }

/* ---- Empty states ---- */
.ms-empty {
    text-align: center;
    padding: 2.5rem 1.5rem;
    color: var(--ms-text-muted);
}

.ms-empty i { font-size: 2.5rem; opacity: .4; display: block; margin-bottom: .75rem; }
.ms-empty p { font-size: .9rem; margin: 0; }

/* ---- Footer ---- */
.ms-footer {
    background: var(--ms-surface);
    border-top: 1px solid var(--ms-border);
    padding: 1rem 0;
    margin-top: auto;
}

.ms-footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: .5rem;
}

.ms-footer small { color: var(--ms-text-muted); font-size: .78rem; }
.ms-footer img { height: 32px; opacity: .6; transition: opacity var(--ms-transition); }
.ms-footer img:hover { opacity: 1; }

/* ---- Login page ---- */
.ms-login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
    padding: 2rem 1rem;
    position: relative;
    overflow: hidden;
}

.ms-login-page::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(ellipse at 30% 50%, rgba(37,99,235,.08) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 20%, rgba(6,182,212,.06) 0%, transparent 50%);
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(1deg); }
}

.ms-login-card {
    background: rgba(255,255,255,.97);
    border-radius: var(--ms-radius-xl);
    padding: 2.5rem;
    width: 100%;
    max-width: 400px;
    box-shadow: var(--ms-shadow-xl);
    position: relative;
    z-index: 1;
    text-align: center;
}

.ms-login-card img { height: 80px; margin-bottom: 1.5rem; }

.ms-login-card h1 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--ms-text);
    margin-bottom: 1.5rem;
}

.ms-login-card .ms-form-group { text-align: left; }

/* ---- Mobile responsive ---- */
.ms-mobile-card { display: none; }

@media (max-width: 992px) {
    .ms-desktop-table { display: none !important; }
    .ms-mobile-card { display: block; }
    .ms-page-header { flex-direction: column; align-items: stretch; }
    .ms-health-grid { grid-template-columns: 1fr; }
}

@media (max-width: 576px) {
    .ms-login-card { padding: 1.75rem; margin: 1rem; }
    .ms-stat-card { padding: 1rem; }
    .ms-stat-value { font-size: 1.3rem; }
}

/* ---- Utils ---- */
.gap-2 { gap: .5rem; }
.gap-3 { gap: .75rem; }
.mt-auto { margin-top: auto; }
.text-truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.font-mono { font-family: var(--ms-font-mono); }