/* CSS Variables */
:root {
    --color-primary: #e62f5f;
    --color-primary-hover: #d91a4d;
    --color-secondary: #3e5472;
    --color-secondary-light: #4a6589;
    --color-accent: #3a9d9c;
    --color-background: #f8fafc;
    --color-text: #1e293b;
    --color-text-muted: #64748b;
    --color-border: #e2e8f0;
    --color-white: #ffffff;

    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);

    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;

    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-style: normal;
    font-weight: 400;
    letter-spacing: -0.01em;
    color: var(--color-text);
    line-height: 1.6;
    background-color: var(--color-background);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Links */
a {
    color: var(--color-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-primary);
    text-decoration: none;
}

/* Header Container */
.container-fluid.header {
    background: var(--color-white);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

/* Social Bar */
.social-bar-wrapper {
    border-bottom: 1px solid var(--color-border);
}

.social-bar {
    padding: 8px 24px;
    width: 100%;
    align-items: center;
}

.social-bar .nav-link {
    padding: 4px 8px;
}

.social-bar .fab {
    color: var(--color-primary);
    font-size: 1.2em;
    transition: transform var(--transition-fast), color var(--transition-fast);
}

.social-bar .fab:hover {
    color: var(--color-primary-hover);
    transform: scale(1.1);
}

.social-bar .btn {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-hover) 100%);
    color: var(--color-white);
    text-transform: uppercase;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    padding: 8px 16px;
    border: none;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.social-bar .btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

/* Navbar */
.navbar {
    padding: 12px 24px;
    border-top: none;
    border-bottom: 1px solid var(--color-border);
    background-color: var(--color-white);
    margin: 0;
}

.navbar-brand {
    margin-right: auto;
}

.navbar-brand img {
    height: 40px;
    width: auto;
    transition: opacity var(--transition-fast);
}

.navbar-brand:hover img {
    opacity: 0.85;
}

.navbar-collapse {
    flex-grow: 0;
}

.navbar-light .navbar-nav .nav-link {
    color: var(--color-secondary);
    font-weight: 500;
    font-size: 0.95rem;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.navbar-light .navbar-nav .nav-link:hover {
    color: var(--color-primary);
    background-color: rgba(230, 47, 95, 0.05);
}

.nav-link {
    cursor: pointer;
}

/* Dropdown */
.dropdown-menu {
    border: none;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: 8px;
    margin-top: 8px;
    animation: dropdownFade 0.2s ease;
}

@keyframes dropdownFade {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.dropdown-item {
    padding: 10px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    color: var(--color-text);
    transition: background-color var(--transition-fast);
}

.dropdown-item:hover {
    background-color: var(--color-background);
    color: var(--color-primary);
}

/* Primary Button */
.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-hover) 100%);
    border: none;
    font-weight: 600;
    padding: 10px 24px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--color-primary-hover) 0%, #c41541 100%);
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

.btn-primary:focus {
    box-shadow: 0 0 0 3px rgba(230, 47, 95, 0.3);
}

/* Mobile Responsive */
@media (max-width: 991px) {
    .navbar-light .navbar-nav .nav-item {
        border-top: 1px solid var(--color-border);
    }

    .navbar-light .navbar-nav .nav-item:first-child {
        border-top: none;
    }

    .navbar-light .navbar-nav .nav-item a {
        padding: 16px 0;
    }

    .navbar-light .navbar-nav .nav-item .dropdown-menu {
        padding: 8px 0;
        border: none;
        box-shadow: none;
        background-color: var(--color-background);
        border-radius: var(--radius-sm);
        margin: 8px 0;
    }

    .dropdown-item {
        padding-left: 24px;
    }

    .navbar-toggler {
        border: none;
        padding: 8px;
        border-radius: var(--radius-sm);
    }

    .navbar-toggler:focus {
        box-shadow: none;
        outline: none;
    }
}

@media (max-width: 575px) {
    .social-bar .nav-item:not(:last-child) {
        display: none;
    }

    .social-bar {
        justify-content: center !important;
    }
}