/* Professional Top Navigation Layout */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

.page-wrapper {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background-color: #f8f9fa;
}

/* Top Navigation Bar */
.top-navbar {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.top-navbar .container-fluid {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 2rem;
    max-width: 100%;
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0;
}

.navbar-brand a {
    color: #ffffff;
    text-decoration: none;
    transition: opacity 0.3s;
}

.navbar-brand a:hover {
    opacity: 0.9;
}

/* Main Navigation Menu */
.main-nav {
    flex: 1;
    display: flex;
    justify-content: center;
    margin: 0 2rem;
}

.nav-menu {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 0.5rem;
}

.nav-item {
    margin: 0;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.3s ease;
    font-weight: 500;
    font-size: 0.95rem;
}

.nav-link:hover {
    background-color: rgba(255, 255, 255, 0.15);
    color: #ffffff;
    transform: translateY(-2px);
}

.nav-link.active {
    background-color: rgba(255, 255, 255, 0.25);
    color: #ffffff;
    font-weight: 600;
}

.nav-icon {
    font-size: 1.1rem;
}

.nav-text {
    display: inline-block;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background-color: #ffffff;
    border-radius: 3px;
    transition: all 0.3s;
}

/* Auth Actions */
.auth-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.user-menu {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.welcome-text {
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.9rem;
}

.btn-auth {
    padding: 0.6rem 1.5rem;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.btn-login {
    background-color: rgba(255, 255, 255, 0.2);
    color: #ffffff;
    border-color: rgba(255, 255, 255, 0.3);
}

.btn-login:hover {
    background-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.btn-register {
    background-color: #ffffff;
    color: #667eea;
    border-color: #ffffff;
}

.btn-register:hover {
    background-color: #f8f9fa;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.btn-logout {
    padding: 0.6rem 1.5rem;
    background-color: rgba(255, 255, 255, 0.2);
    color: #ffffff;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 6px;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.btn-logout:hover {
    background-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

/* Main Content */
.main-content {
    flex: 1;
    padding: 2rem 0;
    min-height: calc(100vh - 200px);
}

.main-content .container-fluid {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Footer */
.footer {
    background-color: #2d3748;
    color: #a0aec0;
    padding: 2rem 0;
    margin-top: auto;
    border-top: 1px solid #4a5568;
}

.footer .container-fluid {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    text-align: center;
}

.footer p {
    margin: 0;
    font-size: 0.9rem;
}

/* Cards */
.card {
    border: none;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    margin-bottom: 1.5rem;
    background: #ffffff;
}

.card:hover {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
    transform: translateY(-2px);
}

.card-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #ffffff;
    border-radius: 12px 12px 0 0 !important;
    padding: 1.25rem 1.5rem;
    border: none;
    font-weight: 600;
}

.card-body {
    padding: 1.5rem;
}

/* Buttons */
.btn {
    border-radius: 8px;
    padding: 0.75rem 1.5rem;
    font-weight: 500;
    transition: all 0.3s ease;
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #ffffff;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    background-color: #6c757d;
    color: #ffffff;
}

.btn-secondary:hover {
    background-color: #5a6268;
    transform: translateY(-2px);
}

.btn-outline-primary {
    border: 2px solid #667eea;
    color: #667eea;
    background: transparent;
}

.btn-outline-primary:hover {
    background: #667eea;
    color: #ffffff;
    transform: translateY(-2px);
}

.btn-outline-secondary {
    border: 2px solid #6c757d;
    color: #6c757d;
    background: transparent;
}

.btn-outline-secondary:hover {
    background: #6c757d;
    color: #ffffff;
}

.btn-success {
    background-color: #10b981;
    color: #ffffff;
}

.btn-success:hover {
    background-color: #059669;
    transform: translateY(-2px);
}

.btn-danger {
    background-color: #ef4444;
    color: #ffffff;
}

.btn-danger:hover {
    background-color: #dc2626;
    transform: translateY(-2px);
}

/* Forms */
.form-control,
.form-select {
    border-radius: 8px;
    border: 1px solid #e2e8f0;
    padding: 0.75rem 1rem;
    transition: all 0.3s ease;
}

.form-control:focus,
.form-select:focus {
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
    outline: none;
}

.form-label {
    font-weight: 500;
    color: #2d3748;
    margin-bottom: 0.5rem;
}

/* Tables */
.table {
    background: #ffffff;
    border-radius: 12px;
    overflow: hidden;
}

.table thead {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #ffffff;
}

.table thead th {
    border: none;
    padding: 1rem;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.5px;
}

.table tbody tr {
    transition: background-color 0.2s;
}

.table tbody tr:hover {
    background-color: #f7fafc;
}

.table tbody td {
    padding: 1rem;
    border-color: #e2e8f0;
    vertical-align: middle;
}

/* Badges */
.badge {
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
    font-weight: 500;
    font-size: 0.85rem;
}

/* Alerts */
.alert {
    border-radius: 8px;
    border: none;
    padding: 1rem 1.5rem;
}

.alert-info {
    background-color: #dbeafe;
    color: #1e40af;
}

.alert-danger {
    background-color: #fee2e2;
    color: #991b1b;
}

.alert-success {
    background-color: #d1fae5;
    color: #065f46;
}

/* Responsive Design */
@media (max-width: 992px) {
    .top-navbar .container-fluid {
        padding: 1rem;
        flex-wrap: wrap;
    }

    .main-nav {
        margin: 0;
        order: 3;
        width: 100%;
        margin-top: 1rem;
        position: relative;
    }

    .nav-menu {
        flex-direction: column;
        width: 100%;
        gap: 0.25rem;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
        background-color: rgba(0, 0, 0, 0.1);
        border-radius: 8px;
        padding: 0;
    }

    .main-nav.mobile-menu-open .nav-menu {
        max-height: 500px;
        padding: 0.5rem;
    }

    .mobile-menu-toggle {
        display: flex;
        order: 2;
    }

    .nav-link {
        width: 100%;
        justify-content: flex-start;
    }

    .auth-actions {
        order: 1;
        margin-left: auto;
    }

    .main-content .container-fluid {
        padding: 0 1rem;
    }
}

@media (max-width: 768px) {
    .navbar-brand {
        font-size: 1.25rem;
    }

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

    .welcome-text {
        display: none;
    }

    .main-content {
        padding: 1.5rem 0;
    }

    .card-body {
        padding: 1rem;
    }

    .table-responsive {
        font-size: 0.9rem;
    }
}

@media (max-width: 576px) {
    .top-navbar .container-fluid {
        padding: 0.75rem;
    }

    .navbar-brand {
        font-size: 1.1rem;
    }

    .btn-auth {
        padding: 0.4rem 0.75rem;
        font-size: 0.8rem;
    }

    .main-content .container-fluid {
        padding: 0 0.75rem;
    }
}

/* Loading Spinner */
.spinner-border {
    width: 1rem;
    height: 1rem;
    border-width: 0.15em;
}

/* Page Headings */
h1, h2, h3, h4, h5, h6 {
    color: #2d3748;
    font-weight: 600;
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

h2 {
    font-size: 2rem;
    margin-bottom: 1.25rem;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #ffffff;
    padding: 6rem 2rem;
    text-align: center;
    margin: -2rem -2rem 4rem -2rem;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: #ffffff;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2.5rem;
    opacity: 0.95;
    line-height: 1.6;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-actions .btn {
    min-width: 180px;
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.hero-actions .btn-primary {
    background-color: #ffffff;
    color: #667eea;
    border: 2px solid #ffffff;
}

.hero-actions .btn-primary:hover {
    background-color: #f8f9fa;
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

.hero-actions .btn-outline-primary {
    border: 2px solid rgba(255, 255, 255, 0.5);
    color: #ffffff;
    background: transparent;
}

.hero-actions .btn-outline-primary:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: #ffffff;
}

/* Features Section */
.features-section {
    padding: 4rem 0;
    background-color: #ffffff;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 600;
    color: #2d3748;
    margin-bottom: 3rem;
}

.feature-card {
    text-align: center;
    padding: 2.5rem 2rem;
    background: #ffffff;
    border-radius: 12px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    height: 100%;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 24px rgba(102, 126, 234, 0.15);
}

.feature-icon {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    display: block;
}

.feature-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #2d3748;
    margin-bottom: 1rem;
}

.feature-card p {
    color: #718096;
    line-height: 1.6;
    font-size: 1rem;
}

/* Utility Classes */
.text-center {
    text-align: center;
}

.mt-4 {
    margin-top: 1.5rem;
}

.mb-4 {
    margin-bottom: 1.5rem;
}

.mb-5 {
    margin-bottom: 3rem;
}

.p-5 {
    padding: 3rem;
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .hero-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .hero-actions .btn {
        width: 100%;
    }

    .section-title {
        font-size: 2rem;
    }

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