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

:root {
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --primary-light: #eef2ff;
    --primary-rgb: 99,102,241;
    --success: #10b981;
    --success-light: #ecfdf5;
    --danger: #ef4444;
    --danger-light: #fef2f2;
    --warning: #f59e0b;
    --warning-light: #fffbeb;
    --info: #06b6d4;
    --info-light: #ecfeff;
    --sidebar-width: 260px;
    --sidebar-bg: #0f172a;
    --sidebar-hover: #1e293b;
    --sidebar-active: rgba(99,102,241,0.15);
    --body-bg: #f8fafc;
    --card-bg: #ffffff;
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    --border-color: #e2e8f0;
    --radius: 12px;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
    --shadow: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.04);
    --transition: all 0.2s cubic-bezier(0.4,0,0.2,1);
}

* { box-sizing: border-box; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--body-bg);
    color: var(--text-primary);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    margin: 0;
}

/* ─── Sidebar ─── */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--sidebar-bg);
    z-index: 1050;
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease;
    overflow: hidden;
}

.sidebar-brand {
    padding: 24px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
}

/* ─── OZYADS Neon ─── */
.brand-neon {
    font-family: 'Inter', sans-serif;
    font-size: 1.6rem;
    font-weight: 900;
    letter-spacing: 0.08em;
    color: #ff1744;
    text-shadow:
        0 0 4px #ff1744,
        0 0 11px #ff1744,
        0 0 19px #ff1744,
        0 0 40px #ff0040,
        0 0 80px #ff0040,
        0 0 90px #ff0040,
        0 0 100px #ff0040,
        0 0 150px #ff0040;
    animation: neonPulse 2s ease-in-out infinite alternate;
    user-select: none;
}
@keyframes neonPulse {
    from {
        text-shadow:
            0 0 4px #ff1744,
            0 0 11px #ff1744,
            0 0 19px #ff1744,
            0 0 40px #ff0040,
            0 0 80px #ff0040;
    }
    to {
        text-shadow:
            0 0 2px #ff1744,
            0 0 5px #ff1744,
            0 0 10px #ff1744,
            0 0 20px #ff0040,
            0 0 40px #ff0040,
            0 0 60px #ff0040,
            0 0 80px #ff0040,
            0 0 120px #ff0040;
    }
}
.sidebar-brand-version {
    font-size: 0.65rem;
    background: rgba(255,255,255,0.1);
    padding: 2px 6px;
    border-radius: 4px;
    color: var(--text-muted);
    margin-left: auto;
}

.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: 12px 10px;
}
.sidebar-nav::-webkit-scrollbar { width: 3px; }
.sidebar-nav::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 3px; }

.nav-section {
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: rgba(255,255,255,0.3);
    padding: 16px 14px 6px;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    border-radius: 8px;
    color: rgba(255,255,255,0.6);
    font-size: 0.875rem;
    font-weight: 500;
    transition: var(--transition);
    text-decoration: none;
    margin-bottom: 2px;
}
.nav-link i { font-size: 1.1rem; width: 20px; text-align: center; }
.nav-link:hover {
    background: var(--sidebar-hover);
    color: rgba(255,255,255,0.9);
}
.nav-link.active {
    background: var(--sidebar-active);
    color: var(--primary);
    font-weight: 600;
}
.nav-link.active i { color: var(--primary); }

.sidebar-footer {
    padding: 12px 14px;
    border-top: 1px solid rgba(255,255,255,0.06);
}
.sidebar-credit {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    margin-bottom: 8px;
    border-radius: 8px;
    background: rgba(245,158,11,0.1);
    color: #f59e0b;
    font-size: 0.8rem;
    font-weight: 600;
}
.sidebar-user {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 10px;
    border-radius: 8px;
    transition: var(--transition);
    text-decoration: none;
}
.sidebar-user:hover { background: var(--sidebar-hover); }
.sidebar-user-avatar {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, #6366f1, #a78bfa);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 700;
    font-size: 0.85rem;
    flex-shrink: 0;
}
.sidebar-user-info {
    flex: 1;
    min-width: 0;
}
.sidebar-user-name {
    color: #fff;
    font-size: 0.85rem;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.sidebar-user-role {
    color: var(--text-muted);
    font-size: 0.7rem;
}

/* ─── Main Content ─── */
.main-content {
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.top-bar {
    position: sticky;
    top: 0;
    z-index: 1020;
    background: rgba(248,250,252,0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    padding: 16px 32px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.top-bar-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}
.top-bar-subtitle {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.page-content {
    flex: 1;
    padding: 24px 32px;
}

/* ─── Cards ─── */
.card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}
.card:hover { box-shadow: var(--shadow); }
.card-header {
    background: transparent;
    border-bottom: 1px solid var(--border-color);
    padding: 16px 20px;
    font-weight: 600;
    font-size: 0.9rem;
    border-radius: var(--radius) var(--radius) 0 0 !important;
}
.card-body { padding: 20px; }

/* ─── Stat Cards ─── */
.stat-card {
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 20px;
    background: var(--card-bg);
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}
.stat-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}
.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
}
.stat-value {
    font-size: 1.75rem;
    font-weight: 800;
    line-height: 1;
    letter-spacing: -0.02em;
}
.stat-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 500;
}
.stat-change {
    font-size: 0.7rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 2px;
    padding: 2px 6px;
    border-radius: 6px;
}

/* ─── Buttons ─── */
.btn { font-weight: 500; border-radius: 8px; transition: var(--transition); font-size: 0.875rem; }
.btn-primary { background: var(--primary); border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-hover); border-color: var(--primary-hover); box-shadow: 0 4px 12px rgba(var(--primary-rgb),0.35); }
.btn-outline-primary { color: var(--primary); border-color: var(--primary); }
.btn-outline-primary:hover { background: var(--primary); border-color: var(--primary); }
.btn-lg { padding: 10px 24px; font-size: 0.95rem; }
.btn-sm { padding: 4px 10px; font-size: 0.8rem; border-radius: 6px; }

/* ─── Forms ─── */
.form-control, .form-select {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 8px 12px;
    font-size: 0.875rem;
    transition: var(--transition);
    color: var(--text-primary);
}
.form-control:focus, .form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.12);
}
.form-control-lg { padding: 10px 14px; font-size: 0.95rem; }
.form-label { font-size: 0.85rem; font-weight: 600; color: var(--text-primary); margin-bottom: 4px; }
.form-text { font-size: 0.75rem; color: var(--text-muted); }

/* ─── Tables ─── */
.table { font-size: 0.875rem; margin-bottom: 0; }
.table th {
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 10px 16px;
    background: #f8fafc;
}
.table td {
    padding: 12px 16px;
    border-bottom: 1px solid #f1f5f9;
    vertical-align: middle;
}
.table-hover tbody tr:hover { background: #f8fafc; }

/* ─── Badges ─── */
.badge {
    font-weight: 600;
    font-size: 0.7rem;
    padding: 4px 8px;
    border-radius: 6px;
    letter-spacing: 0.02em;
}
.badge-delivered { background: var(--success-light); color: var(--success); }
.badge-sent { background: #dbeafe; color: #1d4ed8; }
.badge-queued, .badge-submitted { background: var(--warning-light); color: #b45309; }
.badge-failed, .badge-expired, .badge-rejected, .badge-undeliverable { background: var(--danger-light); color: var(--danger); }

/* ─── Alerts ─── */
.alert { border-radius: var(--radius); font-size: 0.875rem; border: none; }

/* ─── Progress ─── */
.progress { height: 6px; border-radius: 3px; background: #f1f5f9; }
.progress-bar { border-radius: 3px; }

/* ─── Settings Nav ─── */
.settings-nav .nav-link {
    color: var(--text-secondary);
    padding: 12px 16px;
    border-radius: 8px;
    font-weight: 500;
    margin-bottom: 2px;
}
.settings-nav .nav-link:hover { background: var(--primary-light); color: var(--primary); }
.settings-nav .nav-link.active { background: var(--primary); color: #fff; }
.settings-nav .nav-link.active:hover { background: var(--primary-hover); color: #fff; }

/* ─── Login ─── */
.login-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #312e81 100%);
    position: relative;
    overflow: hidden;
}
.login-wrapper::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(99,102,241,0.08) 0%, transparent 50%);
    animation: loginGlow 15s ease infinite;
}
@keyframes loginGlow { 0%,100%{transform:translate(0,0)} 50%{transform:translate(30px,-30px)} }

.login-card {
    width: 100%;
    max-width: 420px;
    border-radius: 16px;
    border: 1px solid rgba(255,255,255,0.08);
    background: rgba(255,255,255,0.97);
    backdrop-filter: blur(20px);
    box-shadow: 0 25px 50px -12px rgba(0,0,0,0.25);
    z-index: 1;
}

/* ─── Other ─── */
.char-counter { font-size: 0.75rem; color: var(--text-muted); }
.char-counter.warning { color: var(--danger); }

.csv-dropzone {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius);
    padding: 40px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    background: #fafbfc;
}
.csv-dropzone:hover, .csv-dropzone.dragover {
    border-color: var(--primary);
    background: var(--primary-light);
}

.sms-preview {
    background: var(--success-light);
    border-radius: var(--radius);
    padding: 16px;
    font-size: 0.9rem;
    max-width: 320px;
    position: relative;
    margin: 0 auto;
}

.toast-container { position: fixed; top: 20px; right: 20px; z-index: 9999; }

.font-monospace { font-family: 'JetBrains Mono', 'SF Mono', 'Fira Code', monospace; }

.text-gradient {
    background: linear-gradient(135deg, var(--primary), #a78bfa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

@keyframes slideDown { from { opacity:0; transform:translateY(-10px) } to { opacity:1; transform:translateY(0) } }
.fade-in { animation: slideDown 0.3s ease; }

/* ─── Mobile ─── */
.sidebar-toggle {
    display: none;
    position: fixed;
    top: 12px;
    left: 12px;
    z-index: 1060;
    width: 40px;
    height: 40px;
    border-radius: 8px;
    background: var(--sidebar-bg);
    color: #fff;
    border: none;
    font-size: 1.2rem;
    cursor: pointer;
}

.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 1040;
}

@media (max-width: 991.98px) {
    .sidebar { transform: translateX(-100%); }
    .sidebar.show { transform: translateX(0); }
    .sidebar-toggle { display: flex; align-items: center; justify-content: center; }
    .sidebar-overlay.show { display: block; }
    .main-content { margin-left: 0; }
    .top-bar { padding: 16px 16px 16px 60px; }
    .page-content { padding: 16px; }
}

@media (max-width: 575.98px) {
    .stat-value { font-size: 1.5rem; }
    .page-content { padding: 12px; }
}

footer {
    padding: 20px 32px;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.75rem;
    border-top: 1px solid var(--border-color);
    margin-top: auto;
}