/**
 * Lead Management System - Main Stylesheet
 * Modern, Mobile-Friendly Design
 */

:root {
    --primary-color: #4e73df;
    --secondary-color: #858796;
    --success-color: #1cc88a;
    --info-color: #36b9cc;
    --warning-color: #f6c23e;
    --danger-color: #e74a3b;
    --light-color: #f8f9fc;
    --dark-color: #5a5c69;
    --sidebar-width: 260px;
    --sidebar-collapsed-width: 80px;
    --topbar-height: 60px;
    --transition-speed: 0.3s;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-size: 0.95rem;
    background-color: #f8f9fa;
    color: #333;
    line-height: 1.6;
}

.wrapper {
    display: flex;
    width: 100%;
    min-height: 100vh;
}

/* Sidebar Styles */
.sidebar {
    width: var(--sidebar-width);
    background: linear-gradient(180deg, #4e73df 0%, #224abe 100%);
    color: #fff;
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    overflow-y: auto;
    transition: all var(--transition-speed) ease;
    z-index: 1000;
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
}

.sidebar-content {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.sidebar-brand {
    padding: 1.5rem 1rem;
    font-size: 1.2rem;
    font-weight: 600;
    text-align: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-brand a {
    color: #fff;
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.sidebar-nav {
    list-style: none;
    padding: 1rem 0;
    flex: 1;
}

.sidebar-header {
    padding: 1rem 1.5rem 0.5rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    opacity: 0.7;
}

.sidebar-item {
    margin: 0.25rem 0.75rem;
}

.sidebar-link {
    display: flex;
    align-items: center;
    padding: 0.75rem 1rem;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    border-radius: 0.5rem;
    transition: all 0.2s ease;
    gap: 0.75rem;
}

.sidebar-link:hover {
    background-color: rgba(255, 255, 255, 0.1);
    color: #fff;
    transform: translateX(5px);
}

.sidebar-item.active .sidebar-link {
    background-color: rgba(255, 255, 255, 0.2);
    color: #fff;
    font-weight: 600;
}

.sidebar-footer {
    padding: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: auto;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 0.5rem;
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
}

.user-details {
    flex: 1;
}

.user-name {
    font-weight: 600;
    font-size: 0.9rem;
}

.user-role {
    font-size: 0.75rem;
    opacity: 0.8;
}

/* Main Content */
.main {
    margin-left: var(--sidebar-width);
    width: calc(100% - var(--sidebar-width));
    transition: all var(--transition-speed) ease;
}

/* Topbar */
.topbar {
    background-color: #fff;
    height: var(--topbar-height);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.5rem;
    position: sticky;
    top: 0;
    z-index: 999;
}

.topbar-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.sidebar-toggle {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--dark-color);
    padding: 0.5rem;
    border-radius: 0.25rem;
    transition: all 0.2s ease;
}

.sidebar-toggle:hover {
    background-color: var(--light-color);
}

.page-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--dark-color);
    margin: 0;
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Content */
.content {
    padding: 2rem;
}

/* Cards */
.card {
    background-color: #fff;
    border-radius: 0.5rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    margin-bottom: 1.5rem;
    border: none;
}

.card-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid #e3e6f0;
    background-color: #f8f9fc;
    font-weight: 600;
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-body {
    padding: 1.5rem;
}

.card-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid #e3e6f0;
    background-color: #f8f9fc;
}

/* Stats Cards */
.stat-card {
    background-color: #fff;
    border-radius: 0.5rem;
    padding: 1.5rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    border-left: 4px solid var(--primary-color);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.stat-card.success {
    border-left-color: var(--success-color);
}

.stat-card.info {
    border-left-color: var(--info-color);
}

.stat-card.warning {
    border-left-color: var(--warning-color);
}

.stat-card.danger {
    border-left-color: var(--danger-color);
}

.stat-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.stat-text {
    flex: 1;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--secondary-color);
    text-transform: uppercase;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--dark-color);
}

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--light-color);
    color: var(--primary-color);
}

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--dark-color);
    font-size: 0.9rem;
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 0.95rem;
    border: 1px solid #d1d3e2;
    border-radius: 0.35rem;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-control:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(78, 115, 223, 0.1);
}

.form-control.is-invalid,
.was-validated .form-control:invalid {
    border-color: var(--danger-color);
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='none' stroke='%23e74a3b' viewBox='0 0 12 12'%3e%3ccircle cx='6' cy='6' r='4.5'/%3e%3cpath stroke-linejoin='round' d='M5.8 3.6h.4L6 6.5z'/%3e%3ccircle cx='6' cy='8.2' r='.6' fill='%23e74a3b' stroke='none'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right calc(0.375em + 0.1875rem) center;
    background-size: calc(0.75em + 0.375rem) calc(0.75em + 0.375rem);
    padding-right: calc(1.5em + 0.75rem);
}

.form-control.is-valid,
.was-validated .form-control:valid {
    border-color: var(--success-color);
}

.was-validated select.form-control:invalid,
select.form-control.is-invalid {
    background-position: right 2rem center;
}

textarea.form-control {
    min-height: 100px;
    resize: vertical;
}

.form-text {
    font-size: 0.85rem;
    color: var(--secondary-color);
    margin-top: 0.25rem;
}

.invalid-feedback {
    color: var(--danger-color);
    font-size: 0.85rem;
    margin-top: 0.25rem;
    display: none;
}

.was-validated .form-control:invalid ~ .invalid-feedback,
.form-control.is-invalid ~ .invalid-feedback {
    display: block;
}

.valid-feedback {
    color: var(--success-color);
    font-size: 0.85rem;
    margin-top: 0.25rem;
    display: none;
}

.was-validated .form-control:valid ~ .valid-feedback,
.form-control.is-valid ~ .valid-feedback {
    display: block;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    font-size: 0.95rem;
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    border: none;
    border-radius: 0.35rem;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

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

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

.btn-primary:hover {
    background-color: #2e59d9;
}

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

.btn-success:hover {
    background-color: #17a673;
}

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

.btn-danger:hover {
    background-color: #c82333;
}

.btn-warning {
    background-color: var(--warning-color);
    color: #333;
}

.btn-info {
    background-color: var(--info-color);
    color: #fff;
}

.btn-secondary {
    background-color: var(--secondary-color);
    color: #fff;
}

.btn-light {
    background-color: var(--light-color);
    color: var(--dark-color);
    border: 1px solid #d1d3e2;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.btn-block {
    display: block;
    width: 100%;
}

/* Badges */
.badge {
    display: inline-block;
    padding: 0.35rem 0.65rem;
    font-size: 0.75rem;
    font-weight: 600;
    line-height: 1;
    color: #fff;
    text-align: center;
    white-space: nowrap;
    vertical-align: baseline;
    border-radius: 0.35rem;
}

/* Alerts */
.alert {
    padding: 1rem 1.25rem;
    margin-bottom: 1rem;
    border-radius: 0.35rem;
    border-left: 4px solid;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.alert-success {
    background-color: #d4edda;
    border-color: var(--success-color);
    color: #155724;
}

.alert-danger,
.alert-error {
    background-color: #f8d7da;
    border-color: var(--danger-color);
    color: #721c24;
}

.alert-warning {
    background-color: #fff3cd;
    border-color: var(--warning-color);
    color: #856404;
}

.alert-info {
    background-color: #d1ecf1;
    border-color: var(--info-color);
    color: #0c5460;
}

.alert-dismissible {
    position: relative;
    padding-right: 3rem;
}

.btn-close {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    opacity: 0.5;
    width: 1.5rem;
    height: 1.5rem;
    line-height: 1;
    color: #858796;
}

.btn-close::before {
    content: '×';
    font-size: 2rem;
    font-weight: 300;
    display: block;
}

.btn-close:hover {
    opacity: 1;
    color: #5a5c69;
}

/* Modal Header */
.modal-header {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.5rem;
    border-bottom: 1px solid #e3e6f0;
    background-color: #fff;
    border-radius: 0.35rem 0.35rem 0 0;
}

.modal-header h3 {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 600;
    color: #5a5c69;
    flex: 1;
}

.modal-header .btn-close {
    position: relative;
    top: auto;
    right: auto;
    transform: none;
    margin-left: 1rem;
    flex-shrink: 0;
}

/* PWA Install Button */
.pwa-install-button {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    width: 100%;
    padding: 0.75rem 1rem;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, #1cc88a 0%, #17a673 100%);
    color: white;
    border: none;
    border-radius: 0.5rem;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.pwa-install-button:hover {
    background: linear-gradient(135deg, #17a673 0%, #13865d 100%);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
    transform: translateY(-1px);
}

.pwa-install-button:active {
    transform: translateY(0);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.pwa-install-button i {
    width: 18px;
    height: 18px;
}

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

table {
    width: 100%;
    border-collapse: collapse;
}

table thead {
    background-color: var(--light-color);
}

table th {
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    color: var(--dark-color);
    border-bottom: 2px solid #e3e6f0;
    white-space: nowrap;
}

table td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid #e3e6f0;
}

table tbody tr:hover {
    background-color: #f8f9fc;
}

.table-striped tbody tr:nth-child(odd) {
    background-color: #f8f9fc;
}

/* DataTables Custom Styles */
.dataTables_wrapper {
    padding: 0;
}

.dataTables_filter {
    margin-bottom: 1rem;
}

.dataTables_filter input {
    margin-left: 0.5rem;
    padding: 0.5rem 1rem;
    border: 1px solid #d1d3e2;
    border-radius: 0.35rem;
}

/* Row Highlighting */
tr.overdue {
    background-color: #ffe5e5 !important;
}

tr.overdue:hover {
    background-color: #ffd5d5 !important;
}

/* Grid System */
.row {
    display: flex;
    flex-wrap: wrap;
    margin: 0 -0.75rem;
}

.col {
    flex: 1;
    padding: 0 0.75rem;
}

.col-1 { flex: 0 0 8.333%; max-width: 8.333%; padding: 0 0.75rem; }
.col-2 { flex: 0 0 16.666%; max-width: 16.666%; padding: 0 0.75rem; }
.col-3 { flex: 0 0 25%; max-width: 25%; padding: 0 0.75rem; }
.col-4 { flex: 0 0 33.333%; max-width: 33.333%; padding: 0 0.75rem; }
.col-5 { flex: 0 0 41.666%; max-width: 41.666%; padding: 0 0.75rem; }
.col-6 { flex: 0 0 50%; max-width: 50%; padding: 0 0.75rem; }
.col-7 { flex: 0 0 58.333%; max-width: 58.333%; padding: 0 0.75rem; }
.col-8 { flex: 0 0 66.666%; max-width: 66.666%; padding: 0 0.75rem; }
.col-9 { flex: 0 0 75%; max-width: 75%; padding: 0 0.75rem; }
.col-10 { flex: 0 0 83.333%; max-width: 83.333%; padding: 0 0.75rem; }
.col-11 { flex: 0 0 91.666%; max-width: 91.666%; padding: 0 0.75rem; }
.col-12 { flex: 0 0 100%; max-width: 100%; padding: 0 0.75rem; }

/* Utilities */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-left { text-align: left; }

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.d-flex { display: flex; }
.justify-content-between { justify-content: space-between; }
.align-items-center { align-items: center; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }

/* Login Page */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 1rem;
}

.login-card {
    background-color: #fff;
    border-radius: 1rem;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    max-width: 450px;
    width: 100%;
    padding: 3rem 2rem;
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-header h1 {
    font-size: 1.75rem;
    color: var(--dark-color);
    margin-bottom: 0.5rem;
}

.login-header p {
    color: var(--secondary-color);
    font-size: 0.95rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.active {
        transform: translateX(0);
    }

    .main {
        margin-left: 0;
        width: 100%;
    }

    .content {
        padding: 1rem;
    }

    .page-title {
        font-size: 1.25rem;
    }

    .col-1, .col-2, .col-3, .col-4, .col-5, .col-6,
    .col-7, .col-8, .col-9, .col-10, .col-11, .col-12 {
        flex: 0 0 100%;
        max-width: 100%;
        margin-bottom: 1rem;
    }

    .stat-value {
        font-size: 1.5rem;
    }

    .stat-icon {
        width: 50px;
        height: 50px;
    }

    table {
        font-size: 0.85rem;
    }

    table th,
    table td {
        padding: 0.5rem;
    }
}

@media (max-width: 480px) {
    .topbar {
        padding: 0 1rem;
    }

    .login-card {
        padding: 2rem 1.5rem;
    }

    .btn {
        padding: 0.65rem 1.25rem;
        font-size: 0.9rem;
    }
}

/* Chart Container */
.chart-container {
    position: relative;
    height: 300px;
    margin-bottom: 1.5rem;
}

/* Loading Spinner */
.spinner {
    border: 4px solid rgba(0, 0, 0, 0.1);
    border-left-color: var(--primary-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 2rem auto;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Sidebar Toggle Collapsed State */
body.sidebar-collapsed .sidebar {
    width: var(--sidebar-collapsed-width);
}

body.sidebar-collapsed .main {
    margin-left: var(--sidebar-collapsed-width);
    width: calc(100% - var(--sidebar-collapsed-width));
}

body.sidebar-collapsed .sidebar-brand span,
body.sidebar-collapsed .sidebar-link span,
body.sidebar-collapsed .sidebar-header,
body.sidebar-collapsed .user-details {
    display: none;
}

body.sidebar-collapsed .sidebar-link {
    justify-content: center;
}