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

:root {
    --bg-primary: #0b0f19;
    --bg-secondary: #111827;
    --bg-card: rgba(22, 28, 45, 0.6);
    --border-color: rgba(255, 255, 255, 0.08);
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --color-primary: #6366f1;
    --color-primary-hover: #4f46e5;
    --color-success: #10b981;
    --color-success-bg: rgba(16, 185, 129, 0.15);
    --color-error: #ef4444;
    --color-error-bg: rgba(239, 68, 68, 0.15);
    --color-warning: #f59e0b;
    --color-warning-bg: rgba(245, 158, 11, 0.15);
    --font-sans: 'Inter', sans-serif;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: var(--font-sans);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
}

/* Scrollbar Customization */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* Glassmorphism containers */
.glass-container {
    background: var(--bg-card);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}

/* Login Page Styling */
.login-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: radial-gradient(circle at 10% 20%, rgba(99, 102, 241, 0.15) 0%, transparent 40%),
                radial-gradient(circle at 90% 80%, rgba(16, 185, 129, 0.1) 0%, transparent 45%),
                var(--bg-primary);
    padding: 20px;
}

.login-card {
    width: 100%;
    max-width: 440px;
    padding: 40px;
    animation: fadeIn 0.6s ease-out;
}

.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.login-header h1 {
    font-size: 28px;
    font-weight: 800;
    letter-spacing: -0.5px;
    background: linear-gradient(135deg, #a5b4fc 0%, #6366f1 50%, #4338ca 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 8px;
}

.login-header p {
    color: var(--text-secondary);
    font-size: 14px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.input-control {
    width: 100%;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 12px 16px;
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 14px;
    transition: var(--transition);
}

.input-control:focus {
    outline: none;
    border-color: var(--color-primary);
    background: rgba(255, 255, 255, 0.05);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.15);
}

.btn {
    width: 100%;
    font-family: var(--font-sans);
    font-size: 14px;
    font-weight: 600;
    padding: 12px 24px;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
}

.btn-primary {
    background: var(--color-primary);
    color: #ffffff;
}

.btn-primary:hover {
    background: var(--color-primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.12);
}

.btn-danger {
    background: var(--color-error);
    color: #ffffff;
}

.btn-danger:hover {
    background: #dc2626;
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.2);
}

/* Alert Notification Banner */
.alert {
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 13px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    animation: slideDown 0.3s ease-out;
}

.alert-error {
    background: var(--color-error-bg);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #fca5a5;
}

.alert-success {
    background: var(--color-success-bg);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: #a7f3d0;
}

.alert-warning {
    background: var(--color-warning-bg);
    border: 1px solid rgba(245, 158, 11, 0.3);
    color: #fde68a;
}

/* OTP Code Box */
.otp-inputs {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin: 24px 0;
}

.otp-box {
    width: 48px;
    height: 52px;
    font-size: 24px;
    font-weight: 700;
    text-align: center;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    color: var(--color-success);
    transition: var(--transition);
}

.otp-box:focus {
    outline: none;
    border-color: var(--color-success);
    box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.15);
    background: rgba(255, 255, 255, 0.05);
}

/* Dashboard Layout */
.dashboard-wrapper {
    display: flex;
    min-height: 100vh;
}

/* Sidebar navigation */
.sidebar {
    width: 260px;
    background-color: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 24px;
    position: fixed;
    height: 100vh;
    z-index: 100;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 40px;
}

.logo-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--color-primary) 0%, #a5b4fc 100%);
    border-radius: 10px;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #ffffff;
    font-weight: 800;
    font-size: 20px;
}

.logo-section h2 {
    font-size: 20px;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.nav-menu {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex-grow: 1;
}

.nav-item a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 14px;
    border-radius: 8px;
    transition: var(--transition);
}

.nav-item.active a, .nav-item a:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.04);
}

.nav-item.active a {
    background: rgba(99, 102, 241, 0.08);
    color: #a5b4fc;
    border-left: 3px solid var(--color-primary);
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
}

.user-profile {
    border-top: 1px solid var(--border-color);
    padding-top: 20px;
    margin-top: auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.user-info {
    display: flex;
    flex-direction: column;
}

.username-display {
    font-size: 14px;
    font-weight: 600;
}

.role-badge {
    font-size: 10px;
    font-weight: 700;
    color: var(--color-primary);
    text-transform: uppercase;
    margin-top: 2px;
}

.logout-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 18px;
    padding: 8px;
    border-radius: 6px;
    transition: var(--transition);
}

.logout-btn:hover {
    color: var(--color-error);
    background: rgba(239, 68, 68, 0.1);
}

/* Main Content Area */
.main-content {
    margin-left: 260px;
    flex-grow: 1;
    padding: 40px;
    background: radial-gradient(ellipse at top right, rgba(99, 102, 241, 0.05), transparent 45%);
}

.header-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.header-actions h1 {
    font-size: 28px;
    font-weight: 800;
    letter-spacing: -0.5px;
}

/* Tab contents animation */
.tab-content {
    display: none;
    animation: fadeIn 0.4s ease-out;
}

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

/* Metric / Summary Cards */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.metric-card {
    padding: 24px;
    display: flex;
    flex-direction: column;
}

.metric-label {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    margin-bottom: 8px;
}

.metric-value {
    font-size: 32px;
    font-weight: 800;
    color: var(--text-primary);
}

/* Tables and lists styling */
.data-table-container {
    overflow-x: auto;
    margin-bottom: 20px;
}

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

.data-table th, .data-table td {
    padding: 16px 24px;
    border-bottom: 1px solid var(--border-color);
}

.data-table th {
    font-size: 12px;
    text-transform: uppercase;
    font-weight: 600;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.01);
}

.data-table tr:hover td {
    background: rgba(255, 255, 255, 0.01);
}

/* Badges for status */
.badge {
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    display: inline-block;
}

.badge-sent, .badge-received {
    background: var(--color-success-bg);
    color: var(--color-success);
}

.badge-sending, .badge-queued {
    background: var(--color-warning-bg);
    color: var(--color-warning);
}

.badge-failed {
    background: var(--color-error-bg);
    color: var(--color-error);
}

/* Action Buttons in Tables */
.action-btn-group {
    display: flex;
    gap: 8px;
}

.action-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    cursor: pointer;
    width: 32px;
    height: 32px;
    border-radius: 6px;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: var(--transition);
}

.action-btn:hover {
    background: rgba(255, 255, 255, 0.1);
}

.action-btn-danger:hover {
    color: var(--color-error);
    background: var(--color-error-bg);
    border-color: rgba(239, 68, 68, 0.2);
}

/* Configuration Layout */
.config-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

@media (max-width: 900px) {
    .config-layout {
        grid-template-columns: 1fr;
    }
}

.config-card {
    padding: 30px;
}

.config-card h3 {
    margin-bottom: 24px;
    font-size: 18px;
    font-weight: 700;
    color: var(--color-primary);
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Modals */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 500;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
}

.modal-overlay.open {
    opacity: 1;
    pointer-events: all;
}

.modal-card {
    width: 100%;
    max-width: 500px;
    padding: 32px;
    transform: translateY(20px);
    transition: var(--transition);
}

.modal-overlay.open .modal-card {
    transform: translateY(0);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.modal-header h2 {
    font-size: 20px;
    font-weight: 700;
}

.modal-close {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 24px;
    cursor: pointer;
}

.modal-close:hover {
    color: var(--text-primary);
}

.modal-footer {
    margin-top: 30px;
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

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

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