/* BulkMailer Pro - Premium Light & Dark Theme Configuration */
:root {
    /* Default Light Mode Colors */
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-card: #ffffff;
    --bg-card-hover: #f1f5f9;
    --bg-input: #f8fafc;
    --bg-sidebar: #ffffff; /* Fully white/light sidebar */
    --bg-topbar: rgba(255, 255, 255, 0.85);
    --accent: #4f46e5;
    --accent-hover: #4338ca;
    --accent-glow: rgba(79, 70, 229, 0.15);
    --accent-subtle: rgba(79, 70, 229, 0.05);
    --success: #10b981;
    --success-subtle: rgba(16, 185, 129, 0.1);
    --warning: #f59e0b;
    --warning-subtle: rgba(245, 158, 11, 0.1);
    --danger: #ef4444;
    --danger-subtle: rgba(239, 68, 68, 0.1);
    --info: #06b6d4;
    --info-subtle: rgba(6, 182, 212, 0.1);
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --border-color: rgba(0, 0, 0, 0.08);
    --border-color-hover: rgba(0, 0, 0, 0.15);
    
    --sidebar-width: 260px;
    --topbar-height: 64px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.05);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.08);
    --shadow-glow: 0 0 20px var(--accent-glow);
}

[data-bs-theme="dark"] {
    /* Dark Mode Overrides */
    --bg-primary: #0a0e1a;
    --bg-secondary: #111827;
    --bg-card: #1a1f35;
    --bg-card-hover: #1f2642;
    --bg-input: #151a2e;
    --bg-sidebar: #0d1221;
    --bg-topbar: rgba(10, 14, 26, 0.85);
    --accent: #6366f1;
    --accent-hover: #818cf8;
    --accent-glow: rgba(99, 102, 241, 0.25);
    --accent-subtle: rgba(99, 102, 241, 0.08);
    --success: #10b981;
    --success-subtle: rgba(16, 185, 129, 0.12);
    --warning: #f59e0b;
    --warning-subtle: rgba(245, 158, 11, 0.12);
    --danger: #ef4444;
    --danger-subtle: rgba(239, 68, 68, 0.12);
    --info: #06b6d4;
    --info-subtle: rgba(6, 182, 212, 0.12);
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --border-color: rgba(148, 163, 184, 0.08);
    --border-color-hover: rgba(148, 163, 184, 0.15);
    
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.3);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.4);
    --shadow-glow: 0 0 30px var(--accent-glow);
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{font-family:'Inter',sans-serif;background:var(--bg-primary);color:var(--text-primary);min-height:100vh;overflow-x:hidden;-webkit-font-smoothing:antialiased}
body::before{content:'';position:fixed;top:-200px;right:-200px;width:600px;height:600px;background:radial-gradient(circle,var(--accent-glow) 0%,transparent 70%);pointer-events:none;z-index:0}
a{color:var(--accent);text-decoration:none}a:hover{color:var(--accent-hover)}

/* Sidebar */
.sidebar{position:fixed;top:0;left:0;width:var(--sidebar-width);height:100vh;background:var(--bg-sidebar);border-right:1px solid var(--border-color);display:flex;flex-direction:column;z-index:1000;transition:transform .3s ease}
.sidebar-brand{display:flex;align-items:center;gap:12px;padding:20px 24px;border-bottom:1px solid var(--border-color)}
.brand-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--accent),#a855f7);border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;font-size:1.2rem;color:#fff;box-shadow:var(--shadow-glow)}
.brand-text{font-size:1.15rem;font-weight:700}.text-accent{color:var(--accent)}
.sidebar-nav{flex:1;padding:16px 12px;display:flex;flex-direction:column;gap:4px;overflow-y:auto}
.nav-link-sidebar{display:flex;align-items:center;gap:12px;padding:12px 16px;border-radius:var(--radius-sm);color:var(--text-secondary);font-size:.875rem;font-weight:500;transition:all .2s ease;text-decoration:none}
.nav-link-sidebar:hover{background:var(--accent-subtle);color:var(--text-primary)}
.nav-link-sidebar.active{background:linear-gradient(135deg,rgba(99,102,241,.15),rgba(168,85,247,.1));color:var(--accent-hover);box-shadow:inset 3px 0 0 var(--accent)}
.nav-link-sidebar i{font-size:1.1rem;width:24px;text-align:center}
.sidebar-footer{padding:16px;border-top:1px solid var(--border-color);display:flex;align-items:center;justify-content:space-between}
.user-badge{display:flex;align-items:center;gap:10px}
.user-avatar{width:36px;height:36px;background:var(--accent-subtle);border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--accent)}
.user-info{display:flex;flex-direction:column}
.user-name{font-size:.8rem;font-weight:600}.user-role{font-size:.7rem;color:var(--text-muted)}
.btn-logout{color:var(--text-muted);padding:8px;border-radius:var(--radius-sm);transition:all .2s ease}
.btn-logout:hover{background:var(--danger-subtle);color:var(--danger)}

/* Main */
.main-content{margin-left:var(--sidebar-width);min-height:100vh;position:relative;z-index:1}
.topbar{height:var(--topbar-height);padding:0 32px;display:flex;align-items:center;gap:16px;border-bottom:1px solid var(--border-color);background:var(--bg-topbar);backdrop-filter:blur(20px);position:sticky;top:0;z-index:100}
.page-title{font-size:1.15rem;font-weight:700;flex:1}
.content-wrapper{padding:28px 32px}

/* Cards */
.card-glass{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:24px;transition:all .3s ease}
.card-glass:hover{border-color:var(--border-color-hover);box-shadow:var(--shadow-md)}
.card-glass .card-header-custom{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;padding-bottom:16px;border-bottom:1px solid var(--border-color)}
.card-glass .card-title{font-size:1rem;font-weight:600;display:flex;align-items:center;gap:8px}

/* Stat Cards */
.stat-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:24px;display:flex;align-items:flex-start;gap:16px;transition:all .3s ease;position:relative;overflow:hidden}
.stat-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:var(--border-color-hover)}
.stat-icon{width:48px;height:48px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;font-size:1.3rem;flex-shrink:0}
.stat-icon.accent{background:var(--accent-subtle);color:var(--accent)}
.stat-icon.success{background:var(--success-subtle);color:var(--success)}
.stat-icon.warning{background:var(--warning-subtle);color:var(--warning)}
.stat-icon.danger{background:var(--danger-subtle);color:var(--danger)}
.stat-icon.info{background:var(--info-subtle);color:var(--info)}
.stat-info{flex:1}
.stat-label{font-size:.75rem;font-weight:500;color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;margin-bottom:4px}
.stat-value{font-size:1.75rem;font-weight:800;letter-spacing:-.03em;line-height:1}

/* Forms */
.form-control,.form-select{background:var(--bg-input)!important;border:1px solid var(--border-color)!important;color:var(--text-primary)!important;border-radius:var(--radius-sm)!important;padding:10px 14px;font-size:.875rem;transition:all .2s ease}
.form-control:focus,.form-select:focus{border-color:var(--accent)!important;box-shadow:0 0 0 3px var(--accent-glow)!important}
.form-control::placeholder{color:var(--text-muted)}
.form-label{font-size:.8rem;font-weight:600;color:var(--text-secondary);margin-bottom:6px;text-transform:uppercase;letter-spacing:.04em}
textarea.form-control{min-height:120px;resize:vertical}

/* Buttons */
.btn-accent{background:linear-gradient(135deg,var(--accent),#7c3aed);color:#fff;border:none;padding:10px 24px;border-radius:var(--radius-sm);font-weight:600;font-size:.875rem;transition:all .3s ease}
.btn-accent:hover{transform:translateY(-1px);box-shadow:var(--shadow-glow);color:#fff}
.btn-outline-accent{background:transparent;color:var(--accent);border:1px solid var(--accent);padding:10px 24px;border-radius:var(--radius-sm);font-weight:600;font-size:.875rem;transition:all .2s ease}
.btn-outline-accent:hover{background:var(--accent-subtle);color:var(--accent-hover)}
.btn-danger-soft{background:var(--danger-subtle);color:var(--danger);border:1px solid transparent;padding:6px 14px;border-radius:var(--radius-sm);font-size:.8rem;font-weight:500;transition:all .2s ease}
.btn-danger-soft:hover{background:rgba(239,68,68,.2);color:#f87171}
.btn-success-soft{background:var(--success-subtle);color:var(--success);border:1px solid transparent;padding:6px 14px;border-radius:var(--radius-sm);font-size:.8rem;font-weight:500;transition:all .2s ease}
.btn-success-soft:hover{background:rgba(16,185,129,.2);color:#34d399}

/* Table */
.table-dark-custom{width:100%;border-collapse:separate;border-spacing:0}
.table-dark-custom thead th{background:rgba(99,102,241,.05);color:var(--text-muted);font-size:.7rem;font-weight:600;text-transform:uppercase;letter-spacing:.06em;padding:12px 16px;border-bottom:1px solid var(--border-color);white-space:nowrap}
.table-dark-custom tbody td{padding:14px 16px;border-bottom:1px solid var(--border-color);font-size:.85rem;vertical-align:middle}
.table-dark-custom tbody tr{transition:background .15s ease}
.table-dark-custom tbody tr:hover{background:var(--accent-subtle)}
.table-dark-custom tbody tr:last-child td{border-bottom:none}

/* Badges */
.badge-status{display:inline-flex;align-items:center;gap:5px;padding:4px 12px;border-radius:50px;font-size:.72rem;font-weight:600}
.badge-active{background:var(--success-subtle);color:var(--success)}
.badge-inactive{background:var(--danger-subtle);color:var(--danger)}
.badge-pending{background:var(--warning-subtle);color:var(--warning)}
.badge-sending{background:var(--info-subtle);color:var(--info)}
.badge-completed{background:var(--success-subtle);color:var(--success)}
.badge-failed{background:var(--danger-subtle);color:var(--danger)}
.badge-paused{background:var(--warning-subtle);color:var(--warning)}

/* Progress */
.progress-custom{height:8px;background:var(--bg-input);border-radius:50px;overflow:hidden}
.progress-custom .progress-bar-custom{height:100%;background:linear-gradient(90deg,var(--accent),#a855f7);border-radius:50px;transition:width .5s ease;position:relative}
.progress-custom .progress-bar-custom::after{content:'';position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(90deg,transparent 0%,rgba(255,255,255,.15) 50%,transparent 100%);animation:shimmer 2s infinite}
@keyframes shimmer{0%{transform:translateX(-100%)}100%{transform:translateX(100%)}}

/* Login */
.login-wrapper{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--bg-primary);position:relative;overflow:hidden}
.login-wrapper::before{content:'';position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(ellipse at 20% 50%,var(--accent-glow) 0%,transparent 50%),radial-gradient(ellipse at 80% 50%,rgba(168,85,247,.1) 0%,transparent 50%);animation:bgFloat 15s ease-in-out infinite alternate}
@keyframes bgFloat{0%{transform:translate(0,0)}100%{transform:translate(-2%,2%)}}
.login-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-xl);padding:40px;width:100%;max-width:420px;position:relative;z-index:1;box-shadow:var(--shadow-lg)}
.login-card .brand-icon{width:56px;height:56px;font-size:1.5rem;margin:0 auto 20px}
.login-card h2{text-align:center;font-size:1.3rem;font-weight:700;margin-bottom:6px}
.login-card p{text-align:center;color:var(--text-muted);font-size:.85rem;margin-bottom:28px}

/* Sending Panel */
.sending-panel{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:28px;position:relative;overflow:hidden}
.sending-panel.active::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--accent),#a855f7,var(--success));background-size:200% 100%;animation:gradientMove 3s linear infinite}
@keyframes gradientMove{0%{background-position:0% 0%}100%{background-position:200% 0%}}
.sending-counter{font-size:3rem;font-weight:800;letter-spacing:-.04em;background:linear-gradient(135deg,var(--accent),#a855f7);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;line-height:1.1}
.sending-counter small{font-size:1.2rem;-webkit-text-fill-color:var(--text-muted);font-weight:500}
.log-feed{max-height:300px;overflow-y:auto;font-family:'Courier New',monospace;font-size:.75rem;padding:16px;background:var(--bg-primary);border-radius:var(--radius-sm);border:1px solid var(--border-color)}
.log-feed .log-entry{padding:4px 0;border-bottom:1px solid var(--border-color);display:flex;gap:8px}
.log-feed .log-entry:last-child{border-bottom:none}
.log-entry .log-time{color:var(--text-muted)}
.log-entry.success .log-status{color:var(--success)}
.log-entry.failed .log-status{color:var(--danger)}

/* Scrollbar */
::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border-color-hover);border-radius:3px}

/* Responsive */
@media(max-width:991.98px){.sidebar{transform:translateX(-100%)}.sidebar.show{transform:translateX(0);box-shadow:var(--shadow-lg)}.main-content{margin-left:0}.content-wrapper{padding:20px 16px}.topbar{padding:0 16px}}
@media(min-width:992px){.sidebar-toggle{display:none!important}}

/* Animations */
@keyframes fadeIn{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}
.fade-in{animation:fadeIn .4s ease forwards}
.fade-in-delay-1{animation-delay:.05s;opacity:0}
.fade-in-delay-2{animation-delay:.1s;opacity:0}
.fade-in-delay-3{animation-delay:.15s;opacity:0}

.text-gradient{background:linear-gradient(135deg,var(--accent),#a855f7);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.empty-state{text-align:center;padding:48px 24px;color:var(--text-muted)}
.empty-state i{font-size:3rem;margin-bottom:16px;opacity:.3}
.pulse{animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.5}}
.input-group .btn-outline-secondary{background:var(--bg-input);border:1px solid var(--border-color);color:var(--text-muted)}

/* RTL Overrides */
[dir="rtl"] .sidebar {
    left: auto;
    right: 0;
    border-right: none;
    border-left: 1px solid var(--border-color);
}
[dir="rtl"] .main-content {
    margin-left: 0;
    margin-right: var(--sidebar-width);
}
[dir="rtl"] .btn-logout i {
    transform: rotate(180deg);
}
[dir="rtl"] .input-group > :not(:first-child):not(.dropdown-menu):not(.valid-tooltip):not(.valid-feedback):not(.invalid-tooltip):not(.invalid-feedback) {
    border-top-left-radius: var(--radius-sm) !important;
    border-bottom-left-radius: var(--radius-sm) !important;
    border-top-right-radius: 0 !important;
    border-bottom-right-radius: 0 !important;
}
[dir="rtl"] .input-group > :not(:last-child):not(.dropdown-menu):not(.valid-tooltip):not(.valid-feedback):not(.invalid-tooltip):not(.invalid-feedback) {
    border-top-right-radius: var(--radius-sm) !important;
    border-bottom-right-radius: var(--radius-sm) !important;
    border-top-left-radius: 0 !important;
    border-bottom-left-radius: 0 !important;
}
@media(max-width: 991.98px) {
    [dir="rtl"] .sidebar {
        transform: translateX(100%);
    }
    [dir="rtl"] .sidebar.show {
        transform: translateX(0);
    }
    [dir="rtl"] .main-content {
        margin-right: 0;
    }
}