/**
 * Navigation Component Styles
 */

/* ========================================
   Header & Navigation Bar
   ======================================== */
.header {
    background: var(--white);
    box-shadow: var(--shadow-sm);
    padding: var(--spacing-md) 0;
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    height: 40px;
    width: auto;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.app-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ========================================
   User Info Bar
   ======================================== */
.user-info {
    position: absolute;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    color: var(--white);
    font-size: var(--font-size-sm);
    z-index: var(--z-fixed);
}

.user-info span {
    font-weight: var(--font-weight-medium);
}

.user-info .btn {
    padding: 6px 12px;
    font-size: var(--font-size-sm);
}

/* ========================================
   Back Links
   ======================================== */
.back-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--primary-color);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-lg);
    transition: color var(--transition-fast);
}

.back-link:hover {
    color: var(--primary-dark);
    text-decoration: none;
}

.back-link::before {
    content: "←";
    font-size: var(--font-size-lg);
}

/* ========================================
   Tool Links Grid
   ======================================== */
.tool-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.tool-links a {
    background: var(--white);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    text-align: center;
    color: var(--gray-800);
    font-weight: var(--font-weight-medium);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.tool-links a::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--primary-gradient);
    opacity: 0;
    transition: opacity var(--transition-base);
    z-index: -1;
}

.tool-links a:hover {
    color: var(--white);
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-colored);
    text-decoration: none;
}

.tool-links a:hover::before {
    opacity: 1;
}

/* ========================================
   Breadcrumbs
   ======================================== */
.breadcrumbs {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-sm);
    color: var(--gray-600);
}

.breadcrumbs a {
    color: var(--primary-color);
}

.breadcrumbs span {
    color: var(--gray-400);
}

/* ========================================
   Mobile Menu
   ======================================== */
@media (max-width: 768px) {
    .tool-links {
        grid-template-columns: 1fr;
    }
    
    .user-info {
        position: static;
        justify-content: center;
        margin-bottom: var(--spacing-md);
    }
    
    .nav-container {
        flex-direction: column;
        gap: var(--spacing-md);
    }
}