/**
 * Navigation Styles - ICM Analytics
 *
 * Top navigation bar and mobile menu.
 */

/* Main Navigation */
nav {
    background: var(--bg-nav);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-primary);
    position: sticky;
    top: 0;
    z-index: var(--z-nav);
}

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

/* Logo */
.logo {
    font-size: 1.3rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-decoration: none;
}

.logo:hover {
    opacity: 0.9;
}

/* Nav Links */
.nav-links {
    display: flex;
    gap: var(--spacing-xl);
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: var(--font-size-sm);
    transition: color var(--transition-base);
    position: relative;
    padding: 5px 0;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--color-primary);
}

.nav-links a.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
}

/* Breadcrumb */
.breadcrumb {
    margin-bottom: var(--spacing-xl);
    font-size: var(--font-size-sm);
}

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

.breadcrumb a:hover {
    text-decoration: underline;
}

.breadcrumb span {
    color: var(--text-muted);
}

/* Back Link */
.back-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 500;
    margin-bottom: var(--spacing-xl);
    transition: color var(--transition-fast);
}

.back-link:hover {
    color: var(--color-primary-light);
}

/* Tabs Container */
.tabs-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 30px 0 0;
    position: sticky;
    top: var(--nav-height);
    background: var(--bg-primary);
    z-index: 50;
    backdrop-filter: blur(10px);
}

/* Tabs Navigation */
.tabs {
    display: flex;
    gap: 5px;
    border-bottom: 2px solid rgba(148, 163, 184, 0.1);
    margin-bottom: 30px;
    padding: 0 var(--spacing-xl);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.tabs::-webkit-scrollbar {
    height: 4px;
}

.tabs::-webkit-scrollbar-track {
    background: rgba(148, 163, 184, 0.1);
}

.tabs::-webkit-scrollbar-thumb {
    background: rgba(96, 165, 250, 0.5);
    border-radius: 2px;
}

/* Tab Button/Link */
.tab {
    padding: 12px 20px;
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    border-bottom: 3px solid transparent;
    font-family: inherit;
    white-space: nowrap;
    flex-shrink: 0;
    text-decoration: none;
}

.tab:hover {
    color: var(--text-secondary);
}

.tab.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

/* Auth Section */
.nav-auth {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
    margin-left: auto;
}

.nav-user-email {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.nav-user-email i {
    font-size: 1.2rem;
    color: var(--color-primary);
}

.nav-auth-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: 6px;
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.nav-auth-btn i {
    font-size: 0.9rem;
}

/* Login button - outline style */
.nav-login {
    color: var(--color-primary);
    border-color: rgba(96, 165, 250, 0.3);
    background: transparent;
}

.nav-login:hover {
    background: rgba(96, 165, 250, 0.1);
    border-color: var(--color-primary);
}

/* Sign Up button - gradient style */
.nav-signup {
    background: var(--gradient-button);
    color: white;
    box-shadow: 0 2px 8px rgba(96, 165, 250, 0.3);
}

.nav-signup:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(96, 165, 250, 0.4);
}

/* Logout button */
.nav-logout {
    color: var(--text-secondary);
    border-color: var(--border-secondary);
}

.nav-logout:hover {
    color: var(--color-error);
    border-color: var(--color-error);
    background: rgba(239, 68, 68, 0.1);
}

/* Mobile Navigation */
@media (max-width: 768px) {
    .nav-container {
        height: auto;
        padding: var(--spacing-md);
    }

    .logo {
        font-size: 1.1rem;
    }

    .nav-links {
        width: 100%;
        justify-content: center;
        margin-top: var(--spacing-sm);
        gap: var(--spacing-sm);
        flex-wrap: wrap;
    }

    .nav-links li {
        list-style: none;
    }

    .nav-links a {
        font-size: 0.8rem;
        padding: 6px 10px;
    }

    .nav-auth {
        width: 100%;
        justify-content: center;
        margin-top: var(--spacing-sm);
        margin-left: 0;
    }

    .nav-auth-btn {
        font-size: 0.8rem;
        padding: 6px 12px;
    }

    .nav-user-email {
        font-size: 0.8rem;
    }

    .breadcrumb {
        font-size: 0.8rem;
        margin-bottom: var(--spacing-md);
    }

    .back-link {
        font-size: 0.85rem;
        margin-bottom: var(--spacing-md);
    }

    .tabs-container {
        padding: 15px 0 0;
    }

    .tabs {
        gap: 3px;
        margin-bottom: 20px;
        padding: 0 12px;
    }

    .tab {
        padding: 8px 12px;
        font-size: 0.8rem;
    }
}

@media (max-width: 480px) {
    .nav-links {
        gap: 5px;
    }

    .nav-links a {
        font-size: 0.7rem;
        padding: 5px 8px;
    }

    .nav-auth {
        gap: 8px;
    }

    .nav-auth-btn {
        font-size: 0.75rem;
        padding: 5px 10px;
    }

    .nav-user-email {
        font-size: 0.75rem;
    }

    .tab {
        padding: 7px 10px;
        font-size: 0.75rem;
    }
}