:root {
    --primary-color: #4F46E5;
    --secondary-color: #10B981;
    --accent-color: #F59E0B;
    --danger-color: #EF4444;
    --dark-color: #1F2937;
    --light-color: #F9FAFB;
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-accent: linear-gradient(135deg, #f6d365 0%, #fda085 100%);
    --gradient-dark: linear-gradient(135deg, #1F2937 0%, #111827 100%);
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.07);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 40px rgba(0,0,0,0.15);
    --border-radius-sm: 8px;
    --border-radius-md: 12px;
    --border-radius-lg: 20px;
    --border-radius-xl: 30px;
}

.validation-message {
    font-size: 0.85rem;
    margin-top: 4px;
}

.is-invalid {
    border-color: #dc3545;
    box-shadow: 0 0 0 0.15rem rgba(220, 53, 69, .15);
}

.is-valid {
    border-color: #28a745;
    box-shadow: 0 0 0 0.15rem rgba(40, 167, 69, .12);
}

/* Loading Screen */
.loader-wrapper {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--light-color);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease;
}

.loader-container {
    text-align: center;
}

.loader-logo {
    margin-bottom: 2rem;
    animation: logoFloat 3s ease-in-out infinite;
}

.loader-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid rgba(79, 70, 229, 0.1);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1.5rem;
}

.loader-text {
    color: var(--dark-color);
    font-weight: 500;
    font-size: 1.1rem;
    opacity: 0.7;
}

@keyframes logoFloat {
    0%, 100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-20px);
    }
}

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

/* Announcement Bar */
.announcement-bar {
    background: var(--gradient-accent);
    color: #1F2937;
    font-weight: 500;
    position: relative;
    overflow: hidden;
}

    .announcement-bar::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.2) 50%, transparent 100%);
        animation: shine 3s infinite;
    }

@keyframes shine {
    0% {
        transform: translateX(-100%);
    }

    100% {
        transform: translateX(100%);
    }
}

/* Navigation */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    padding: 1rem 0;
}

    .navbar.scrolled {
        background: rgba(255, 255, 255, 0.98);
        box-shadow: var(--shadow-md);
        padding: 0.75rem 0;
    }

.navbar-brand {
    font-weight: 800;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: var(--border-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.brand-text {
    font-family: 'Montserrat', sans-serif;
    font-weight: 800;
    font-size: 1.5rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.img-fluid {
    max-width: 50%;
    height: auto;
}

.text-gradient-accent {
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-link {
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    border-radius: var(--border-radius-sm);
    margin: 0 0.25rem;
    transition: all 0.3s ease;
    position: relative;
}

    .nav-link:hover, .nav-link.active {
        background: rgba(79, 70, 229, 0.1);
        color: var(--primary-color) !important;
    }

    .nav-link::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 50%;
        transform: translateX(-50%);
        width: 0;
        height: 2px;
        background: var(--gradient-primary);
        border-radius: 2px;
        transition: width 0.3s ease;
    }

    .nav-link:hover::after, .nav-link.active::after {
        width: 70%;
    }

/* Dropdown Menu */
.dropdown-menu-lg {
    min-width: 300px;
    border: none;
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-xl);
    padding: 1rem 0;
    margin-top: 0.5rem !important;
    border: 1px solid rgba(0,0,0,0.05);
}

.dropdown-item {
    padding: 0.75rem 1.5rem;
    font-weight: 500;
    border-radius: var(--border-radius-sm);
    margin: 0.25rem 1rem;
    transition: all 0.2s ease;
}

    .dropdown-item:hover {
        background: rgba(79, 70, 229, 0.1);
        transform: translateX(5px);
    }

/* Buttons */
.btn {
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius-md);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn-gradient-primary {
    background: var(--gradient-primary);
    color: white;
    border: none;
}

    .btn-gradient-primary:hover {
        transform: translateY(-2px);
        box-shadow: var(--shadow-lg);
    }

.btn-outline-gradient {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid transparent;
    background-image: var(--gradient-primary);
    background-origin: border-box;
    background-clip: padding-box, border-box;
}

    .btn-outline-gradient:hover {
        background-image: var(--gradient-primary);
        color: white;
        box-shadow: var(--shadow-md);
    }

.pulse {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(79, 70, 229, 0.4);
    }

    70% {
        box-shadow: 0 0 0 10px rgba(79, 70, 229, 0);
    }

    100% {
        box-shadow: 0 0 0 0 rgba(79, 70, 229, 0);
    }
}

/* Container System */
.main-content {
    padding-top: 0px;
    min-height: calc(100vh - 400px);
}

.secondary-container {
    background: var(--light-color);
    padding: 2rem 0;
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.primary-container {
    padding: 3rem 0;
}

/* Breadcrumb */
.breadcrumb-container {
    margin-bottom: 2rem;
}

.breadcrumb {
    background: transparent;
    padding: 0;
    margin: 0;
}

.breadcrumb-item a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.breadcrumb-item.active {
    color: var(--dark-color);
    opacity: 0.7;
}

/* Footer */
.footer {
    background: var(--gradient-dark);
    color: white;
    padding: 4rem 0 2rem;
    position: relative;
    overflow: hidden;
}

    .footer::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 4px;
        background: var(--gradient-primary);
    }

.social-links {
    display: flex;
    gap: 1rem;
}

.social-link {
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
}

    .social-link:hover {
        background: var(--primary-color);
        transform: translateY(-3px);
    }

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

    .footer-links li {
        margin-bottom: 0.75rem;
    }

    .footer-links a {
        color: rgba(255,255,255,0.8);
        text-decoration: none;
        transition: all 0.3s ease;
        display: inline-block;
    }

        .footer-links a:hover {
            color: white;
            transform: translateX(5px);
        }

.newsletter-card {
    background: rgba(255,255,255,0.05);
    padding: 1.5rem;
    border-radius: var(--border-radius-lg);
    border: 1px solid rgba(255,255,255,0.1);
}

/* Back to Top */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.3s ease;
    z-index: 1000;
    box-shadow: var(--shadow-lg);
}

    .back-to-top.show {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }

    .back-to-top:hover {
        transform: translateY(-5px);
        box-shadow: var(--shadow-xl);
    }

/* Responsive Design */
@media (max-width: 992px) {
    .navbar-collapse {
        background: white;
        padding: 1rem;
        border-radius: var(--border-radius-lg);
        box-shadow: var(--shadow-xl);
        margin-top: 1rem;
    }

    .primary-container {
        padding: 2rem 0;
    }
}

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

    .footer {
        text-align: center;
    }

    .social-links {
        justify-content: center;
    }

    .footer-links a:hover {
        transform: none;
    }
}

/* Animation Utilities */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease;
}

    .fade-in.visible {
        opacity: 1;
        transform: translateY(0);
    }

.slide-in-left {
    opacity: 0;
    transform: translateX(-30px);
    transition: all 0.6s ease;
}

    .slide-in-left.visible {
        opacity: 1;
        transform: translateX(0);
    }

.slide-in-right {
    opacity: 0;
    transform: translateX(30px);
    transition: all 0.6s ease;
}

    .slide-in-right.visible {
        opacity: 1;
        transform: translateX(0);
    }

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--light-color);
}

::-webkit-scrollbar-thumb {
    background: var(--gradient-primary);
    border-radius: 5px;
}

    ::-webkit-scrollbar-thumb:hover {
        background: linear-gradient(135deg, #5a52d4 0%, #6a3fa2 100%);
    }